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528 - Synthetic resins or natural rubbers -- part of the class 520 series


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Class / Patent application numberDescriptionNumber of patent applications / Date published
528272000 From di- or higher ester of a polycarboxylic acid as sole reactant, or from a polycarboxylic acid or derivative with a compound containing two or more hydroxyl groups or salts thereof 244
528332000 With organic amine, or from organic amine salt of a carboxylic acid 109
528310000 From imide- or lactam-containing compound, or from an amino-nitrogen containing carboxylic acid, or derivative of an amino-nitrogen-containing carboxylic acid 103
528354000 From compound having -C-C(=O)-O-C- group as part of a heterocyclic ring, e.g., lactone, etc. 58
528361000 From ether, metal alcoholate, or alcohol group-containing carboxylic acid; or from a derivative of a carboxylic acid which derivative contains an ether, metal alcoholate, or alcohol group 41
528363000 With nitrogen-containing reactant 10
528365000 With reactant containing at least one cyclic ether group 8
528360000 From sulfur-containing carboxylic acid 4
20120165498PHOTOCURABLE COMPOSITION - The present invention relates to a photocurable composition which exhibits excellent adhesiveness not only to thermoplastic resins such as PET and polyimide but also to adherends of metal oxides such as IZO and metals such as gold, more particularly to a photocurable composition which comprises a urethane oligomer (A) having two or more allyl ether and/or vinyl ether groups and a polythiol (B) having two or more thiol groups.06-28-2012
20130217854PREPARATION OF SULFONATED POLYOXADIAZOLE POLYMERS - Described is the preparation of sulfonated polyoxadiazole polymers with a high degree of sulfonation and good flammability properties. The polymers are useful in articles such as fibers.08-22-2013
20130217853POLYMERS BEARING PENDANT PENTAFLUOROPHENYL ESTER GROUPS, AND METHODS OF SYNTHESIS AND FUNCTIONALIZATION THEREOF - A one pot method of preparing cyclic carbonyl compounds comprising an active pendant pentafluorophenyl ester group is disclosed. The cyclic carbonyl compounds can be polymerized by ring opening methods to form ROP polymers comprising repeat units comprising a side chain pentafluorophenyl ester group. Using a suitable nucleophile, the pendant pentafluorophenyl ester group can be selectively transformed into a variety of other functional groups before or after the ring opening polymerization.08-22-2013
20090069533Benzoxazine monomers, polymers and compositions - Benzoxazine monomers comprising at least one pendant group are described. (Co)Polymers comprising at least one benzoxazine monomer having at least one pendant group are also described. In a preferred embodiment, the pendant group is located in a side chain of the benzoxazine monomer or polymer. Methods for preparing the benzoxazine monomers and polymers are described. Compositions comprising the benzoxazine monomers and polymers have numerous uses including optical materials, and in electronic materials as electrically insulating materials, and as fireproof materials.03-12-2009
528364000 With sulfur-containing reactant 3
20080269460Stress Relaxation in Crosslinked Polymers - The invention provides methods for inducing reversible chain cleavage of polymer chains in a crosslinked polymeric material. Reversible cleavage of the polymer backbone is capable of relieving stress in the polymeric material as the bonds reform in a less stressed state. The invention also provides methods for making polymeric materials capable of reversible chain cleavage, materials made by the methods of the invention, and linear monomers containing reversible chain cleavage groups which are useful in the materials and methods of the invention.10-30-2008
20100240861ESTERIFICATION PROCESS OF POLYOLS WITH TERTIARY ALKYL SUBSTITUTED ACIDS - A process to prepare polyol esters from tertiary alkyl acid with reduced homo-polymerisation of the polyols. The ester polyol can be used in the synthesis of further polyester resins for coating or structural/composite or lube oil applications.09-23-2010
20100298526COPOLYMER COMPOSITION AND METHOD OF PRODUCING THE COMPOSITION - Provided are a copolymer composition which can achieve a high level of compatibility between clay dispersibility under water having high hardness and an anti-iron deposition ability and is suitable for an additive for a detergent, and a method of producing the composition. The copolymer composition of the present invention includes a copolymer (P) which has a weight average molecular weight of 10,000 to 50,000 and contains a structural unit originating from a monoethylenic unsaturated dicarboxylic acid (or dicarboxylate) monomer (a) at 30 to 60 mol %, a structural unit originating from a monoethylenic unsaturated monocarboxylic acid (or monocarboxylate) monomer (b), and a structural unit originating from a sulfonic acid (or sulfonate) group-containing monomer (c) free of an ester bond and an amide bond, and a remaining monoethylenic unsaturated dicarboxylic acid (or dicarboxylate) monomer a content of which in terms of an acid is less than 12,000 ppm.11-25-2010
528362000 From organic nitrile group-containing compound 1
20100137554SHAPE MEMORY CYANATE ESTER COPOLYMERS - This disclosure covers a new methodology to produce high performance, high temperature, thermoset resins having shape memory characteristics based on cyanate ester resins. This methodology is based on pericyclic polycyclotrimerizations by utilizing a heretofore unknown polymerization mechanism based on equilibrium controlled condensation and cyclization. A mono-functional cyanate ester resin is reacted with at least one molecule terminated with a moiety containing an active hydrogen. One example of molecules with a moiety terminated with an active hydrogen are amine terminated dimethylsiloxane. The resulting compound is heated and reacted with a difunctional cyanate ester resin and cured. The Tg of the final Cyanate Ester SMP can be matched to specific requirements by adjusting the ratio of the previous said elements and/or the addition of other agents to adjust the physical properties of the final Cyanate Ester SMP.06-03-2010
20100041855Polyester for producing fiber, and fiber and non-woven fabric using the same - The present invention provides a liquid-crystalline polyester having a structural unit represented by the formula (i), a structural unit represented by the formula (ii) and a structural unit represented by the formula (iii):02-18-2010
20100105857DENDRIMERIC PLATFORM FOR CONTROLLED RELEASE OF DRUGS - A multifunctional molecular platform is provided, for covalent binding of two or more therapeutic or diagnostic agents, and for their sequential release in a biological environment near desired target sites. The platform is used in the preparation of pharmaceutical compositions for treating abnormal cell proliferation, infections, and inflammation.04-29-2010
20100069600ELECTROCHEMICAL 18F EXTRACTION, CONCENTRATION AND REFORMULATION METHOD FOR RAIOLABELING - A method to extract out of water, concentrate and reformulate [18F] fluorides includes passing a dilute aqueous [18F] fluoride solution entering by an inlet (03-18-2010
20090234093END REACTOR - The present invention relates to a reactor apparatus for free-flowing media, especially for polymers, for polycondensation of polyesters, comprising a rotor which rotates in a reactor casing having an inlet and outlet, said rotor being supported horizontally via a support apparatus by means of stub shaft arrangements which reach beyond the end walls of the reactor casing, wherein annular film-forming elements and, between the annular film-forming elements, strippers are arranged on the inner surfaces of the reactor casing on the rotor, such that the cylindrical rotor has at least one partly heated section.09-17-2009
20090030172POLYMERIC SALEN COMPOUNDS AND METHODS THEREOF - The present disclosure provides a polymerizable compound of the formula (I)01-29-2009
20100137550Method and Device for Cleaning an Absorptive Polyester - In a method for cleaning an absorptive polyester, the polymer is dissolved in a first solvent (06-03-2010
20110130539Method of Preparing Carboxylic Acid Functionalized Polymers - Methods for preparing water soluble, non-peptidic polymers carrying carboxyl functional groups, particularly carboxylic acid functionalized poly(ethylene glycol) (PEG) polymers are disclosed, as are the products of these methods. In general, an ester reagent R(C═0)OR′, wherein R′ is a tertiary group and R comprises a functional group X, is reacted with a water soluble, non-peptidic polymer POLY-Y, where Y is a functional group which reacts with X to form a covalent bond, to form a tertiary ester of the polymer, which is then treated with a strong base in aqueous solution, to form a carboxylate salt of the polymer. Typically, this carboxylate salt is then treated with an inorganic acid in aqueous solution, to convert the carboxylate salt to a carboxylic acid, thereby forming a carboxylic acid functionalized polymer.06-02-2011
20080249280Process for Producing Polyester, Polyester Produced Using Said Process, and Polyester Molded Product - This invention provides a polyester and a polyester molded product, which, while maintaining color tone, transparency, and thermal stability, can realize a high polycondensation rate, are less likely to cause the production of polycondensation catalyst-derived undesired materials, and can simultaneously meet both quality and cost effectiveness requirements, which can exhibit the characteristic features, for example, in the fields of ultrafine fibers, high transparent films for optical use, or ultrahigh transparent molded products. These advantages can be realized by using, in the production of a polyester in the presence of an aluminum compound-containing polyester polycondensation catalyst, an aluminum compound having an absorbance of not more than 0.0132 as measured in the form of an aqueous aluminum compound solution, prepared by dissolving the aluminum compound in pure water to give a concentration of 2.7 g/liter in terms of the amount of aluminum element, under conditions of cell length 1 cm and wavelength 680 nm.10-09-2008
20110098436IPA/Polyester copolymer fiber - A process for producing an IPA/PET copolymer fiber that is homogenous having a substantially level, single IPA copolymer content, said fiber having improved pilling resistance and dye uptake.04-28-2011
20100081784METHOD OF MAKING ISOSORBIDE POLYCARBONATE - A polycarbonate is provided that contains repeat units derived from isosorbide and a residue derived from an activated diaryl carbonate. The polycarbonate has 04-01-2010
20080207867Household Thin Paper - The household thin paper comprising a polyester-based compound represented by General Formula (08-28-2008
20080281071Cationic polymerization of biological oils - A method for the cationic polymerization of unsaturated biological oils (e.g., vegetable oils and animal oils) based on the cationic reaction of double bonds initiated by superacids is provided. The process occurs under very mild reaction conditions (about 70-110° C. and atmospheric pressure) and with short reaction times. The polymerized oils have a viscosity about 10 to 200 times higher than the initial oil and relatively high unsaturation (only about 10-30% lower than that of initial oils).11-13-2008
20080306238WATER- AND OIL-REPELLENCY IMPARTING ESTER OLIGOMERS COMPRISING PERFLUOROALKYL MOIETIES - Fluorochemical ester compositions comprising one or more compounds or oligomers having at least one long chain fluorine-containing repeatable unit and at least one fluorine-containing terminal group are described. The compositions are useful as coatings. The fluorochemical compositions impart oil and water repellency to the substrate. In other aspects, this invention relates to processes for imparting oil and water repellency characteristics to substrates and articles.12-11-2008
20080319157METHOD FOR PRODUCING NORBORNENE MONOMER COMPOSITION, NORBORNENE POLYMER PREPARED THEREFROM, OPTICAL FILM COMPRISING THE NORBORNENE POLYMER, AND METHOD FOR PRODUCING THE NORBORNENE POLYMER - Disclosed is a method for producing a norbornene monomer composition, a norbornene polymer produced using the norbornene monomer composition, an optical film including the norbornene polymer, and a method for producing the norbornene polymer. The method includes reacting a reaction solution that contains cyclopentadiene, dicyclopentadiene, or a mixture of cyclopentadiene and dicyclopentadiene, an acetate compound, and a solvent so that a content of an exo isomer is 50 mol % or more. Variables such as a reaction temperature, a reaction time, a molar ratio between reactants, and addition of a solvent are controlled so that the exo isomer is contained in content of 50 mol % or more. Accordingly, it is possible to industrially produce an acetate norbornene addition polymer by using the acetate norbornene monomer composition containing the exo isomer in content of 50 mol % or more.12-25-2008
20090187001Metathesis Interpolymers Having Terminal Functional Group(s) - The disclosure relates to unsaturated metathesis interpolymers having at least one or more specified terminal functional groups. The interpolymers are prepared by metathesis polymerization, and are selected from 1,5-cyclooctadiene and cyclopentene, 1,5-cyclooctadiene and cyclooctene, and cyclooctene and cyclopentene interpolymers.07-23-2009
20080319158BAFFLE ASSEMBLY MODULE FOR VERTICAL STAGED POLYMERIZATION REACTORS - The present invention provides an assembly for use in vertical, gravity flow driven polymerization reactors for combinations of high viscosity, high throughput, and shallow polymer depths. The baffle assembly module of the invention includes a support structure having a plurality of side openings. The side openings allow the escape of vapor liberated from the polymeric melt. The assembly further includes a feed splitter followed by two or more vertically arranged rows of baffle plates with the feed splitter and baffles sequentially positioned in the support structure. The plurality of parallel baffles in a row are angled such that when a polymeric melt contacts a given baffle the polymeric melt moves in a downward direction under the force of gravity. The arrangement of the rows is such that each row (except the lowest row) transfers the polymeric melt to a lower vertically adjacent row until reaching the last row of baffles in the module. According to the vertical arrangement of the components in the baffle assembly module and by stacking additional baffle assembly modules if needed within the reactor, the polymeric melt cascades down the vertical length of the reaction vessel interior. The present invention also provides a polymerization reactor that incorporates the assembly of the invention and a method of increasing the degree of polymerization of a polymer melt by using the assembly of the invention.12-25-2008
20090198037NORBORNENE-BASED POLYMER, FILM CONTAINING THE SAME, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE - A norbornene based polymer is provided. The norbornene-based polymer includes a repeating unit represented by formula (I) in an amount of from 0.01 to 2.00 mol % based on a total amount of repeating units:08-06-2009
20080262190Method For the Manufacture of Oligo- and Polyesters From a Mixture of Carboxylic Acid Obtained From Suberin and/or Cutin and Use Thereof - The invention relates to a method for processing mixtures of carboxylic acids obtained as hydrolysis products of suberin and cutin, particularly suberin and cutin isolated from birch bark, to give oligo- and polyesters, or corresponding ester-ethers, as well as the use of the products thus obtained as lubricants, fuel components, plasticizers, surface active agents, environmentally friendly agents for modifying wood, binders in coatings, adhesives, printing inks and composites, further in various cosmetic applications.10-23-2008
20090247726MONOMER SOLUTION FOR PRODUCING POLYCARBONATE - A non-reactive monomer mixture contains a monomer component and a diaryl carbonate dispersed in the mixture. The monomer component includes one or more monomer compounds having a melting point below the melting point of the diaryl carbonate. The monomer component has less than 600 ppb alkali metal, an acid stabilizer, or both less than 600 ppb alkali metal and an acid stabilizer. The monomer compounds of the monomer component and the diaryl carbonate are present in a mole ratio of from 0.9 to 1.1. The monomer mixture is at a temperature between the melting temperature of the lowest melting monomer compound and less than 5° C. above the melting point of the diaryl carbonate.10-01-2009
20080281070Free radical living polymerization initiator attached nanoclusters and nanocomposites therefrom - Free radical living polymerization attached nanocluster (metal oxide, e.g., gamma-Fe11-13-2008
20090318659BIOCIDAL POLYMER AND PROCESS FOR PREPARING THE SAME - Disclosed herein is a biocidal polymer including at least one repeating unit of formula (A):12-24-2009
20090105446Method and Device For Producing Vacuum In the Production of Polyesters and Copolyesters - The invention relates to a method and a device for producing vacuum in the production of polyesters and copolyesters; unrectified vapors from at least one esterification or transesterification stage is preferably used as a driving medium in gas jet pumps for producing the vacuum in one or more polycondensation stages.04-23-2009
20110112272STRUCTURAL MATERIALS WITH NEARLY ZERO CARBON EMISSIONS - Processes and methods of making and preparing, compositions and structural products therefrom are provided, whereby the surface area of alumino-silicate based powders is greatly increased and rendered chemically active so that when the functionalized powders are mixed with water poly-condensation reactions occur between the surfaces binding the powders together to form a structural material with negligible emission of carbon compounds. In another embodiment, the surface functionalized powders can be mixed with an additive; a dry aggregate, such as sand and water to make a slurry that can be poured or cast into any desired shape and rapidly cured to a hardened shape suitable for use as a structural material with the mechanical strength equivalent to Portland-cement based concrete products. In additional embodiments, the alumino-silicate based powders are nano-functionalized and foam functionalized to provide light weight and structurally strong materials that can also be used in combination with or as replacement for Portland-cement.05-12-2011
20090036638Contrast Dyes for Inkjet Lithographic Printing Plates - A contrast dye for preparing a lithographic printing plate includes at least one A, D, and B group wherein A represents a phosphorous containing group capable of reacting with the surface of a lithographic receiver; D represents a chromophore group absorbing light between 400 nm and 700 nm; and B represents an aliphatic group of at least 6 carbon atoms. A lithographic printing plate includes such a contrast dye.02-05-2009
20110009593Polymeric Bioplastics - One aspect of the present invention relates to a polymeric material. The invention also relates to a method of making the aforementioned polymer comprising extracting a fungus, wherein the fungus is, for example, an endophytic fungus, such as CR873. The invention further relates to a bioplastic composition comprising the aforementioned polymer.01-13-2011
20110086997Process for lightening the color of polyol esters - The present invention relates to a process for lightening the color of polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, wherein the reaction product is worked up without using adsorbents and comprises a treatment with peroxidic compounds and an immediately subsequent steam treatment with subsequent drying.04-14-2011
20090312517PROCESS FOR PREPARING LONG-CHAIN POLYMETHYLENE HALIDE TELOMERS - A process comprises combining in a batchwise, semi-continuous, or continuous manner, or a combination thereof, in the presence of at least one free radical initiator, and at a temperature sufficient to cause the initiator to fragment to form free radicals, (a) at least one telogen selected from (1) fluoroalkyl halides that comprise at least one halomethylene moiety (—CHX—) and, optionally, at least one non-fluorine heteroatom, and (2) perfluoroalkyl halides that comprise at least one halofluoromethylene moiety (—CFX—) and at least one non-halogen heteroatom, the halides being selected from iodides and bromides; and (b) ethylene; the telogen and the ethylene being combined in total amounts such that the number of moles of ethylene per mole of telogen is at least about 4.12-17-2009
20100121019Sterically Hindered Poly(ethylene glycol) Alkanoic Acids and Derivatives Thereof - The invention provides a sterically hindered polymer that comprises a water-soluble and non-peptidic polymer backbone having at least one terminus covalently bonded to an alkanoic acid or alkanoic acid derivative, wherein the carbon adjacent to the carbonyl group of the acid or acid derivative group has an alkyl or aryl group pendent thereto. The steric effects of the alkyl or aryl group allow greater control of the hydrolytic stability of polymer derivatives. The polymer backbone may be poly(ethylene glycol).05-13-2010
20100261868INDUSTRIAL HIGH TENACITY POLYESTER FIBER WITH SUPERIOR CREEP PROPERTIES AND THE MANUFACTURE THEREOF - The present invention relates to an industrial high tenacity polyester fiber with superior creep properties and a method of preparing the same, and more particularly to an industrial polyester fiber having a mono-filament fineness of 5 to 15 dpf, an intrinsic viscosity of 0.8 to 1.25 dl/g, and a creep change rate of 4.7% or less, wherein the creep change rate is measured at 160° C. for 24 hours while giving a load corresponding to a strain of 3% after heat-treating the fiber at 220° C. for 2 minutes while giving a load of 1 g/d, and the load corresponding to the strain of 3% is based on a value obtained from a load-strain curve of the fiber before heat-treatment, and a method of preparing the same.10-14-2010
20100016542Molding material, use thereof, and process for producing molding material - A molding material of the present invention includes a polymer having a repeating structural unit whose part or whole contains an alicyclic structure, a phenolic stabilizer, a hindered amine light stabilizer and a phosphorus stabilizer, in which at least a part of the phenolic stabilizer and/or hindered amine light stabilizer is presently adhering to the surface of particles of the above polymer.01-21-2010
20100022740Process for Producing Glycolic Acid - Glycolic acid having a high purity is obtained by subjecting glycolic acid or a glycolic acid solution containing contaminants to double-chamber electrodialysis combined with one or more treatments selected from among treatment with an activated carbon, treatment with an ion exchange resin, concentration treatment and cooling crystallization.01-28-2010
20090247725Methods for Preparing Oxydiphthalic Anhydrides, Oxydiphthalic Anhydrides Prepared Thereby, and Polyetherimides Derived Therefrom - a method for preparing an oxydiphthalic anhydride comprises contacting, under reactive and substantially anhydrous conditions in a reactor, at least one halophthalic anhydride containing more than 250 ppm chlorophthalide impurity with a carbonate of the formula M10-01-2009
20110306748Titania-alumina-tungsta extrudate and its use - An extrudate comprising at least 50 wt % titania, 0.5 to 25 wt % tungsta, and 0.5 to 35 wt % alumina is disclosed. The extrudate has improved crush strength compared with a titania-tungsta extrudate. A palladium catalyst prepared from the extrudate has good activity in preparing an acetoxylated olefin from an olefin, oxygen, and acetic acid.12-15-2011
20110105715Titanium Oxide Composition and the Application Thereof on Poly-Esterification - The application discloses a Titanium oxide composition and the application thereof. The mentioned Titanium oxide composition comprises Titanium co-precipitate(s), organic acid, diol, and water. According to this application, a catalyzed poly-esterification with said Titanium oxide composition is also disclosed. The mentioned polyesterification comprises a step of adding said Titanium oxide composition into at least one stage selected from slurry stage, esterification stage, and polycondensation stage.05-05-2011
20120316314Water-Insoluble Polyglutamic Acid Fibers - A water-insoluble polyglutamic acid (PGA) fiber and a preparation method thereof are provided. In the preparation method, the PGA is cross-linked by a cross-linking agent and then passes through a spinning nozzle to form PGA fibers. Therefore, the highly water-absorbing PGA, which cannot be spun by conventional methods, can be spun to form PGA fibers and maintain the high water-absorption ability.12-13-2012
20120253003METHOD FOR PRODUCING LIQUID CRYSTAL POLYESTER - A method is provided for producing a liquid crystal polyester including: (1) polycondensing a mixture of a compound of formula (I) with a compound of formula (II) in a polymerization tank at 260 to 350° C. to form a prepolymer, wherein a ratio of by-products to be distilled off to the theoretical amount of by-products formed when the compound of formula (I) is polycondensed with the compound of formula (II) in a stoichiometric relation is 95% or more; (2) continuously discharging the prepolymer from the polymerization tank in a molten state, solidifying the prepolymer while transferring, and continuously grinding the solidified prepolymer by a grinder provided downstream in a transfer direction to produce prepolymer particles; and (3) heat-treating the prepolymer particles in their solid state under an inert gas atmosphere, thereby subjecting them to solid phase polymerization.10-04-2012
20120226012Radial Mixing Devices for Rotating Inclined Reactors - Disclosed in this specification is the design for an internal mixing device which increases the plug flow like behaviour of the rotating inclined reactor.09-06-2012
20120271029PROCESS FOR PREPARING NEOPENTYL GLYCOL - The present invention relates to a process for preparing hydroxypivalaldehyde (HPA), which comprises in a first stage reacting isobutyraldehyde with formaldehyde in the presence of a tertiary amine and in a second stage introducing the reaction output obtained from the first stage into a stripping column. The present application further relates to a process for preparing neopentyl glycol (NPG) by hydrogenating the hydroxypivalaldehyde prepared in accordance with the invention and the further conversion of the NPG thus obtained to polyester resins, unsaturated polyester resins, lubricants or plasticizers.10-25-2012
20100174043PROCESS FOR PRODUCING ORIENTED THERMOPLASTIC RESIN FILM, APPARATUS THEREFOR AND BASE FILM FOR OPTICAL FILM - Electromagnetic waves radiated when a formed polyester film 07-08-2010
201300236412-METHYLENE GLUTARIC ACID COPOLYMER AND METHOD FOR PRODUCING SAME - Provided is a 2-methylene glutaric acid copolymer that displays excellent heavy metal capturing ability and fine hydrogen peroxide stabilizing ability when used as a fiber treatment agent. The 2-methylene glutaric acid copolymer includes a structural unit derived from a 2-methylene glutaric acid (salt) at a proportion of 30 to 70 mass % (acid form equivalent) with respect to 100 mass % of structural units derived from total monomers, and a structural unit derived from an unsaturated carboxylic acid monomer at a proportion of 30 to 70 mass % (acid form equivalent) with respect to 100 mass % of the structural units derived from the total monomers.01-24-2013
20130158226METHODS OF RING OPENING POLYMERIZATION AND CATALYSTS THEREFOR - A salt catalyst comprises an ionic complex of i) a nitrogen base comprising one or more guanidine and/or amidine functional groups, and ii) an oxoacid comprising one or more active acid groups, the active acid groups independently comprising a carbonyl group (C═O), sulfoxide group (S═O), and/or a phosphonyl group (P═O) bonded to one or more active hydroxy groups; wherein a ratio of moles of the active hydroxy groups to moles of the guanidine and/or amidine functional groups is greater than 0 and less than 2.0. The salt catalysts are capable of catalyzing ring opening polymerization of cyclic carbonyl compounds.06-20-2013
20080200637BIODEGRADABLE RESIN SHEET - A biodegradable sheet or film that is excellent in environmental compatibility accompanied by less time dependent alteration following manufacture of the sheet, having stable flexibility is provided, which can be degraded by a microorganism or the like, and thus can be easily disposed after use. A biodegradable resin sheet which is constituted with a biodegradable (3-HA) copolymer, wherein the rate of change of the tensile elongation with respect to the change in crystallinity (%) from day 1 to day 30 after manufacturing the sheet represented by the formula (1): {[(tensile elongation (%) after a lapse of 1 day following manufacture)−(tensile elongation (%) after a lapse of 30 days following manufacture)]/[(crystallinity (%) after a lapse of 30 days following manufacture)−(crystallinity (%) after a lapse of 1 day following manufacture)]} is equal to or less than 20, and the tensile elongation after a lapse of 60 days following manufacture of the sheet is equal to or greater than 100(%).08-21-2008
20100286359Solid Support for FMOC-Solid Phase Synthesis of Peptide Acids - The present invention provides a solid support for Fmoc-solid phase synthesis of peptides. In particular, the solid supports of the invention may be utilized to produce peptide acids.11-11-2010
20130203954Method for Recovery of Stabilized Polyhydroxyalkanoates from Biomass that has been used to Treat Organic Waste - The invention is directed to a method of increasing the chemical and/or thermal stability of PHA in biomass where the biomass is contained within mixed liquor, and wherein the mixed liquor is treated by a combination of removing water from the mixed liquor and pH adjustment of the mixed liquor or maintenance of the pH of the mixed liquor within a selected pH range, and wherein the method includes reducing the pH of the mixed liquor below 6, or maintaining the pH of the mixed liquor below 6 for a selected period of time, and wherein the pH adjustment of the mixed liquor to below 6 or the maintenance of the pH of the mixed liquor below 6 gives rise to an increase in chemical and/or thermal stability of the PHA in the biomass.08-08-2013


Patent applications in all subclasses FROM CARBOXYLIC ACID OR DERIVATIVE THEREOF