Class / Patent application number | Description | Number of patent applications / Date published |
521128000 | Ingredient is a nitrogen containing compound | 40 |
20080227879 | Water-blown polyurethane foams and a process for their production - Water-blown polyurethane foams are made by reacting a polyisocyanate with a polyol component which includes at least one polyether polyol in the presence of water and a modified, non-fugitive amine catalyst. | 09-18-2008 |
20090156702 | AZEOTROPE-LIKE COMPOSITIONS OF 1,1,2,3,3-PENTAFLUOROPROPENE - The invention pertains to azeotrope-like compositions of 1,1,2,3,3-pentafluoropropene (HFC-1225yc) and any one of 1,1,1,2-tetrafluoropropene (HFC-1234yf) or the Z-isomer of 1,1,1,2,3-pentafluoropropene (HFC-1225yeZ), and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants. | 06-18-2009 |
20090186955 | ADHESIVE COMPOSITION, PROCESS FOR PRODUCING THE SAME, ADHESIVE FILM USING THE SAME, SUBSTRATE FOR MOUNTING SEMICONDUCTOR AND SEMICONDUCTOR DEVICE - The present invention provides an adhesive composition which comprises (a) an epoxy resin, (b) a curing agent and (c) a polymer compound incompatible with said epoxy resin, and further optionally comprises (d) a filler and/or (e) a curing accelerator;
| 07-23-2009 |
20090326089 | PROCESS FOR LOWERING EMISSIONS OF A POLYURETHANE FOAM - The present invention provides a process for producing polyurethane foams from (A1) compounds with a molecular weight of 400-15,000 exhibiting hydrogen atoms that are reactive towards isocyanates, (A2) optionally, compounds with a molecular weight of 62-399 exhibiting hydrogen atoms that are reactive towards isocyanates, (A3) water and/or physical blowing agents, (A4) optionally, auxiliary substances and additives, (A5) compounds with at least one carbonamide group and one nitrile group, and (B) diisocyanates or polyisocyanates, which results in polyurethane foams with lowered emission of formaldehyde and wherein the activity of the raw-material mixture is not significantly influenced and wherein the mechanical properties of the resulting foam (in particular, compression set and ageing behaviour under humid conditions) are not influenced negatively. | 12-31-2009 |
20100041782 | WATER-BLOWN RIGID FOAMS FOR THE INSULATION OF LIQUEFIED NATURAL GAS TANKS - The present invention relates to a rigid polyurethane foam comprising reinforcing materials which can be obtained by mixing (a) isocyanates which have a viscosity at 25° C. of less than 500 mPas with (b) compounds having groups which are reactive toward isocyanates, (c) blowing agents comprising water, (d) catalysts and, if appropriate, (e) further additives to form a reaction mixture and applying the reaction mixture to a reinforcing material, wherein the compounds (b) having groups which are reactive toward isocyanates comprise a polyetherol (b1) having a functionality of 4 or more and a viscosity at 25° C. of 10 000 mPas or less and a polyetherol (b2) having a functionality of 3 or less and a viscosity at 25° C. of 500 mPas or less. The present invention further relates to a process for producing such rigid polyurethane foams and the use of the rigid polyurethane foams for the insulation of liquefied natural gas tanks. | 02-18-2010 |
20100076101 | POLYPHENYLENEPOLYMETHYLENE POLYISOCYANATE AND ITS USE FOR PRODUCING POLYURETHANE FOAMS - The invention relates to polyphenylenepolymethylene polyisocyanates (B) comprising
| 03-25-2010 |
20100099785 | TERTIARY AMINES BLOCKED WITH POLYMER ACIDS - Methods and compositions are provided for forming a catalyst. In one aspect, the catalyst is formed by mixing at least one tertiary amine with at least one polymer acid. Such catalysts are particularly useful in the polymerization of polyurethane foams. | 04-22-2010 |
20100130629 | CATALYST COMPOSITION FOR PRODUCTION OF POLYURETHANE RESIN AND METHOD FOR PRODUCING POLYURETHANE RESIN (AS AMENDED) - Disclosed is a catalyst composition for polyurethane resin production which contains (A) triethylenediamine, (B) a specific polyisocyanurating catalyst and/or (C) a specific highly temperature-sensitive catalyst. By using this catalyst composition, a polyurethane resin can be molded with good curability, while suppressing initial reactivity. Consequently, a polyurethane resin having excellent moldability and fluidity can be produced with high productivity by using the catalyst composition. The thus-obtained polyurethane resin is suitably applicable to shoe soles. The component (B) is selected from the group consisting of alkali metal salts of carboxylic acids, quaternary ammonium compounds expressed as R | 05-27-2010 |
20110124755 | Polyisocyanurates - The invention relates to a polyisocyanurate comprising isocyanurate rings linked by linker groups coupled to the nitrogen atoms of said rings. The polyisocyanurate may be microporous or mesoporous or both microporous and mesoporous. | 05-26-2011 |
20110201709 | ISOCYANATE TRIMERISATION CATALYST SYSTEM, A PRECURSOR FORMULATION, A PROCESS FOR TRIMERISING ISOCYANATES, RIGID POLYISOCYANURATE/POLYURETHANE FOAMS MADE THEREFROM, AND A PROCESS FOR MAKING SUCH FOAMS - The instant invention provides an isocyanate trimerisation catalyst system, a precursor formulation, a process for trimerising isocyanates, rigid foams made therefrom, and a process for making such foams. The trimerisation catalyst system comprises: (a) an imidazolium or imidazolinium cation; and (b) an isocyanate-trimer inducing anion; wherein said trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73° C. The precursor formulation comprises: (1) at least 25 percent by weight of polyol, based on the weight of the precursor formulation; (2) less than 15 percent by weight of a trimerisation catalyst system, based on the weight of the precursor formulation, comprising; (a) an imidazolium or imidazolinium cation; and (c) an isocyanate-trimer inducing anion; wherein said trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73° C.; and (3) optionally one or more surfactants, one or more flame retardants, water, one or more antioxidants, one or more auxiliary blowing agents, one or more urethane catalysts, one or more auxiliary trimerisation catalysts, or combinations thereof. The process for trimerisation of isocyanates comprises the steps of: (1) providing one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanatetriisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture of any thereof; (2) providing a trimerisation catalyst system comprising; (a) an imidazolium or imidazolinium cation; and (b) an isocyanate-trimer inducing anion; (c) wherein said trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73° C.; (3) trimerising said one or more monomers in the presence of said trimerisation catalyst; (4) thereby forming an isocyanurate trimer. The process for making the PIR foam comprises the steps of: (1) providing one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanatetriisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture any thereof; (2) providing polyol; (3) providing a trimerisation catalyst system comprising; (a) an imidazolium or imidazolinium cation; and (b) an isocyanate-timer inducing anion; wherein said trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73° C.; and (4) optionally providing one or more surfactants, one or more flame retardants, water, one or more antioxidants, one or more auxiliary blowing agents, one or more urethane catalysts, one or more auxiliary trimerisation catalysts, or combinations thereof; (5) contacting said one or more monomers, and said polyol, and optionally said one or more surfactants, and optionally said one or more flame retardants, and optionally said water, and optionally said one or more antioxidants, and optionally said one or more auxiliary blowing agents in the presence of said trimerisation catalyst system and optionally said one or more urethane catalysts, and optionally said one or more auxiliary trimerisation catalysts; (6) thereby forming said polyisocyanurate/polyurethane rigid foam. The PIR foam comprises the reaction product of one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanatetriisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture any thereof with polyol in the presence of a trimerisation catalyst system comprising an imidazolium or imidazolinium cation, and an isocyanate-trimer inducing anion, and optionally one or more surfactants, optionally one or more flame retardants, optionally water, optionally one or more antioxidants, optionally one or more auxiliary blowing agents, optionally one or more additional urethane catalysts, and optionally one or more auxiliary trimerisation catalysts, or optionally combinations thereof, wherein the trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73° C. The PIR foam comprises the reaction product of one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanatetriisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture any thereof with polyol in the presence of a trimerisation catalyst system comprising an imidazolium or imidazolinium cation, and an isocyanate-trimer inducing anion, and optionally one or more surfactants, optionally one or more flame retardants, optionally water, optionally one or more antioxidants, optionally one or more auxiliary blowing agents, optionally one or more additional polyurethane catalysts, and optionally one or more auxiliary trimerisation catalysts, or optionally combinations thereof, wherein the PIR foam has a polyisocyanurate trimer ratio (Abs | 08-18-2011 |
20110263737 | PROCESS FOR PRODUCING RIGID POLYURETHANE FOAMS - The invention relates to a process for producing polyurethanes by reacting
| 10-27-2011 |
20120071576 | Additives for Improving Polyurethane Foam Performance - Polyurethane foam compositions and processes to make flexible polyurethane foams are disclosed. Polyurethane foam is produced in the presence of additives comprising guanidine derivatives. Improvements in physical properties such as air flow, dimensional stability, tensile, tear, elongation and foam hardness is observed when these additives are present in polyurethane formulations. In addition, these additives can minimize polymer degradation under humid ageing conditions resulting in foam products with better mechanical properties. | 03-22-2012 |
20120264841 | PROCESS FOR PRODUCING RIGID POLYURETHANE FOAMS - A process for producing a rigid polyurethane foam by reacting an organic polyisocyanate with a polyol component containing a compound with at least two hydrogen atoms which are reactive toward isocyanate groups in the presence of a blowing agent, a catalyst, and optionally auxiliaries and additives, wherein the polyol component contains, by weight: 20 to 60 parts of a polyether alcohol having a functionality of 3.5 to 5.5 and a hydroxyl number of from 400 to 550 mg KOH/g; 1 to 20 parts of a polyether alcohol based on an aliphatic amine and having a functionality of 3.5 to 4.5 and a hydroxyl number of 450 to 900 mg KOH/g; 10 to 30 parts of a polyether alcohol and/or aromatic polyester alcohol having functionalities of 1.5 to 3 and a hydroxyl number of from 150 to 450 mg KOH/g; and optionally 1 to 5 parts of water. | 10-18-2012 |
20120302652 | HIGH RESILIENCE POLYURETHANE FOAMS COMPRISING CASTOR OIL - A process for producing high resilience flexible polyurethane foams. The process includes forming a mixture of (a) isocyanate prepolymer, (b) polymeric compounds having isocyanate-reactive groups, (c) castor oil, (d) optionally chain-extending and/or crosslinking agents, (e) catalysts, (f) blowing agents, and optionally (g) additives, and reacting the mixture to form the flexible polyurethane foam. More than 5 wt % of (c) is used, based on the total weight of components (b) to (g), and (a) is obtained by mixing diphenylmethane diisocyanate (a1) and polyol 1 (a2) and also optionally further polyols, chain extenders and/or crosslinkers, where (a2) includes a polyalkylene oxide polyol having a hydroxyl number of 30 to 60, an average functionality of 2.3 to 3.2 and a propylene oxide fraction, based on the alkylene oxide content, of 70 to 100 wt %. A polyurethane foam obtained by the process, and the use of such a foam as an auto seat. | 11-29-2012 |
20130197114 | Process For Producing Flexible Polyurethane Foam Using Natural Oil Polyols - A composition and process useful to make flexible polyurethane foams and in particular flexible molded polyurethane foams is disclosed. The usage of dipolar aprotic liquids such as DMSO, DMI, sulfolane, N-methyl-acetoacetamide, N,N-dimethylacetoacetamide as well as glycols containing hydroxyl numbers OH#≦1100 as cell opening aides for 2-cyanoacetamide or other similar molecules containing active methylene or methine groups to make a polyurethane foam is also disclosed. The advantage of using cell opener aids results in a) no foam shrinkage; b) lower use levels of cell opener; c) foam performance reproducibility d) optimum physical properties. In addition, combining the acid blocked amine catalyst together with the cell opener and the cell opener aid results in a less corrosive mixture as well as provides a method that does not require mechanical crushing for cell opening. | 08-01-2013 |
20130210947 | Water-Absorbing Polymer Particles with High Free Swell Rate and High Permeability - A process for producing water-absorbing polymer particles with high free swell rate and high permeability by polymerization of an aqueous monomer solution or suspension to give an aqueous polymer gel, wherein a thermal blowing agent essentially free of inorganic acid anions is mixed into the polymer gel, and subsequent thermal drying of the polymer gel. | 08-15-2013 |
20140024733 | PROCESS FOR THE IN SITU PRODUCTION OF POLYETHER POLYOLS BASED ON RENEWABLE MATERIALS AND THEIR USE IN THE PRODUCTION OF FLEXIBLE POLYURETHANE FOAMS - A polyether polyol based on renewable materials is obtained by the in situ production of a polyether from a hydroxyl group-containing vegetable oil, at least one alkylene oxide and a low molecular weight polyol having at least 2 hydroxyl groups. The polyol is produced by introducing the hydroxyl group-containing vegetable oil, a catalyst and an alkylene oxide to a reactor and initiating the alkoxylation reaction. After the alkoxylation reaction has begun but before the reaction has been 20% completed, the low molecular weight polyol having at least 2 hydroxyl groups is continuously introduced into the reactor. After the in situ made polyether polyol product having the desired molecular weight has been formed, the in situ made polyether polyol is removed from the reactor. These polyether polyols are particularly suitable for the production of flexible polyurethane foams. | 01-23-2014 |
20140031444 | POLYURETHANE FOAMS COMPRISING PHOSPHORUS COMPOUNDS - The present invention relates to polyurethanes obtained by mixing to give a reaction mixture of (a) polyisocyanate, (b) polymeric compounds having groups reactive toward isocyanates, (c) catalysts comprising incorporable amine catalysts, (d) phosphoric esters, polyphosphates, phosphonic esters, and/or phosphorous esters, and optionally (e) blowing agents, (f) chain extenders and/or crosslinking agents, and (h) auxiliaries and/or additives, and completing the reaction of the reaction mixture to give the polyurethane. The invention further relates to a process for producing these polyurethanes and to their use in automobile interiors. | 01-30-2014 |
20140100297 | Bone Cement With Adapted Mechanical Properties - A bone cement is shown that includes a monomer, and a non-reactive substance that is fully miscible with the monomer. A resulting cured bone cement exhibits desirable properties such as modification in a stiffness of the material. Modified properties such a stiffness can be tailored to match bone properties and reduce an occurrence of fractures adjacent to a region repaired with bone cement. One example includes adjacent vertebral body fractures in vertebroplasty procedures. | 04-10-2014 |
20140235739 | METHOD FOR PRODUCING TEMPLATE, METHOD FOR CHECKING TEMPLATE, AND TEMPLATE MATERIAL - In one embodiment, a method for producing a template includes applying a resin to a first template having a first concavo-convex pattern, hardening the resin, releasing the hardened resin from the first template to produce a second template having a second concavo-convex pattern corresponding to the first concavo-convex pattern, and enlarging the second template. | 08-21-2014 |
20140323605 | STABLE EMULSIONS AND THEIR USE IN THE PRODUCTION OF FOAMS BASED ON ISOCYANATE - The invention relates to stable emulsions for the production of foams based on isocyanate, at least comprising three polyols A1a, A1b and A1c as well as at least one physical blowing agent T, wherein A1a is a polyether polyol obtained by addition of epoxides to starter compounds selected from carbohydrates and di- or higher-functional alcohols, A1b is a polyether polyol started on an aromatic amine, and A1c is a polyester polyol obtained by esterification of a polycarboxylic acid component and a polyalcohol component, wherein the total amount of aromatic dicarboxylic acid derivatives used in the esterification, calculated on the basis of the free aromatic dicarboxylic acids and based on the total mass of polyalcohol component and polycarboxylic acid component, is less than or equal to 48.5% by mass. | 10-30-2014 |
20140364525 | MELAMINE-POLYOL DISPERSIONS AND USES THEREOF IN MANUFACTURING POLYURETHANE - Melamine-polyol dispersions comprising ethoxylated alcohols of specific structures are disclosed. Such dispersions maintain their stability under stationary conditions for at least 24 hours and are useful in the manufacturing of polyurethane foams. The resulted polyurethane foams display more evenly-distributed flame retardant properties. | 12-11-2014 |
20150094387 | Use of Thickening Agents as Polyurethane Amine Catalyst Diluents - The present disclosure relates to an amine catalyst composition for producing polyurethane foam. The amine catalyst composition includes an amine catalyst and a diluent containing a thickening agent and water. The use of such a diluent, in place of conventional glycols, reduces raw material and processing costs as well as environmental concerns during the production of polyurethane foam. | 04-02-2015 |
20160002426 | Additives for Improving Polyurethane Foam Performance - A composition and process useful to make flexible polyurethane foams and in particular flexible molded polyurethane foams is disclosed. The usage of dipolar aprotic liquids such as DMSO, DMI, sulfolane, N-methyl-acetoacetamide, N,N-dimethylacetoacetamide as well as glycols containing hydroxyl numbers OH#≦1100 as cell opening aides for 2-cyanoacetamide or other similar molecules containing active methylene or methine groups to make a polyurethane foam is also disclosed. The advantage of using cell opener aids results in a) no foam shrinkage; b) lower use levels of cell opener; c) foam performance reproducibility d) optimum physical properties. In addition, combining the acid blocked amine catalyst together with the cell opener and the cell opener aid results in a less corrosive mixture as well as provides a method that does not require mechanical crushing for cell opening. | 01-07-2016 |
20160130416 | STABILIZED POLYURETHANE POLYOL BLENDS CONTAINING HALOGENATED OLEFIN BLOWING AGENT - The present invention relates to imidazole and/or its derivative as polyurethane or polyisocyanurate foam catalyst in the presence of Low Global Warming Potential (GWP) halogenated olefinic blowing agents, such as the hydrochlorofluoroolefin (HCFO) HCF0-1233zd. More particularly, the present invention relates to catalyst compositions comprising imidazole and/or its derivative. The present invention further relates to the stable pre-blend formulations and resulting polyurethane or polyisocyanurate foams. A method for stabilizing thermosetting foam blends comprises combining: (a) a polyisocyanate and, optionally, isocyanate compatible raw materials; and (b) a polyol pre-mix composition comprising a halogenated olefinic blowing agent, a polyol, a surfactant and a catalyst. | 05-12-2016 |
20160200854 | Reduction of Aldehydes in Amine Catalysts | 07-14-2016 |
521129000 | Nitrogen compound contains a nitrogen atom bonded to three carbon atoms and wherein none of the carbon atoms are double-bonded to oxygen | 14 |
20100222444 | Catalyst for production of polyurethane - A catalyst for polyurethane production is provided which is non-corrosive and exhibits effective delay of catalyst action. The catalyst comprises a mixture of a tertiary amine, and a saturated dicarboxylic acid represented by General Formula: | 09-02-2010 |
20120035289 | CATALYST COMPOSITION FOR PRODUCTION OF RIGID POLYURETHANE FOAM AND ISOCYANURATE-MODIFIED RIGID POLYURETHANE FOAM AND RAW-MATERIAL COMPOSITION CONTAINING THE SAME - An object of the present invention is to provide a catalyst for producing a rigid polyurethane foam and an isocyanurate-modified rigid polyurethane foam excellent in storage stability in the case that water is contained as a blowing agent, and a raw material-blended composition using the same. | 02-09-2012 |
20120041088 | FOAMING ADDITIVE FOR PRODUCING POLYURETHANE FOAM, AND METHOD FOR PRODUCING RIGID POLYURETHANE FOAM BY USING IT - To provide a foaming additive for producing a polyurethane foam, which is capable of solving a problem of deterioration of moldability due to deterioration of the initial foaming property of a foam, and a method for producing a rigid polyurethane foam by using it. | 02-16-2012 |
20120172471 | SILICONE COMPOSITION SUITABLE FOR CROSS-LINKING BY DEHYDROCONDENSATION IN THE PRESENCE OF A NON-METAL CATALYST - A silicone composition is described that includes components having SiH/SiOH groupings and that can be polymerized/cross-linked by a dehydrocondensation reaction in the presence of a non-metal catalyst such as non-silylated, pentasubstituted guanidine, requiring a low activation temperature. | 07-05-2012 |
20120264842 | PROCESS FOR PRODUCING RIGID POLYURETHANE FOAMS - A process for producing a rigid polyurethane foam by reacting (a) an organic polyisocyanate with (b) a compound having at least two hydrogen atoms that are reactive toward isocyanate groups, in the presence of (c) a blowing agent, (d) a catalyst and, optionally, (e) an auxiliary or additive. Component (b) contains: one or more high-functionality polyether alcohols having functionalities of 3.5 to 5.5 and a hydroxyl number of 400 to 550 mg KOH/g; one or more polyether alcohols based on aromatic and/or aliphatic amines and having functionalities of 3.5 to 4.5 and a hydroxyl number of 350 to 500 mg KOH/g; one or more polyether alcohols having functionalities of 2 to 4 and a hydroxyl number of 150 to 450 mg KOH/g; one or more low molecular weight chain extenders and/or crosslinkers having functionalities of 2 to 3 and a molecular weight of less than 400 g/mol; and optionally water. | 10-18-2012 |
20140058005 | THERMOFORMABLE RIGID POLYURETHANE-POLYAMIDE FOAM - The present invention relates to a process for producing a thermoformable rigid polyurethane-polyamide foam having a closed-cell content of less than 70%, which comprises mixing (a) an organic polyisocyanate with (b) one or more polymeric compounds having two or more isocyanate-reactive hydrogen atoms, (c) optionally crosslinking and/or chain-extending agents, (d) one or more carboxylic acids having a functionality of 2 or more, (e) a catalyst comprising a Lewis base component, and (f) optionally auxiliaries and additives to form a reaction mixture and reacting this reaction mixture to form the rigid polyurethane-polyamide foam. The present invention further relates to a thermoformable rigid polyurethane-polyamide foam obtained by such a process and also to the use of such a thermoformable rigid polyurethane-polyamide foam for interior lining or engine compartment lining of motor vehicles. | 02-27-2014 |
20140066533 | CONJUGATED MICROPOROUS MACROMOLECULE CATALYST COMPLEXED WITH COBALT, CHROMIUM, ZINC, COPPER OR ALUMINIUM, PREPARATION AND USE THEREOF - Disclosed are a type of catalyst which can catalyse the ring-addition reaction of CO | 03-06-2014 |
20140100298 | Polyester Polyol-Containing Polyurethane Systems Having Improved Hydrolytic Stability - An isocyanate reactive composition for making a polyurethane foam includes a tertiary amine urethane catalyst comprising a di(C1-C4)alkyl fatty alkyl amine and a polyester polyol. The use of one or more of fatty alkyl tertiary amine serves to reduce hydrolysis of the polyester polyol in the isocyanate reactive composition. | 04-10-2014 |
20140357746 | Low Polyunsaturated Fatty Acid Oils and Uses Thereof - Provided are microalgal oils having a low polyunsaturated fatty acid profile and derivatives of the oils, including acids, esters, epoxides, hydroxylated acids and esters, urethanes, amides, and polymers thereof. Also provided are compositions comprising the oils and their derivatives and their uses in foodstuffs and in industrial and material applications. The compositions include flexible polyurethane foams prepared from the microalgal oils. | 12-04-2014 |
20150045466 | EXPANDABLE POLYURETHANE COMPOSITION AND MANUFACTURING METHOD OF FLEXIBLE POLYURETHANE FOAM - An expandable polyurethane composition includes (A) polyisocyanate, (B) active hydrogen containing compound including (B1) polyol and (B2) water, a catalyst, and (C) one or more plasticizers selected from the group consisting of a monoester compound, a diester compound, a triester compound, and a tetraester compound by 0.5 to 20 parts by mass relative to 100 parts by mass of the (B1) polyol. A flexible polyurethane foam can be obtained of which wet set is improved and feeling is good. | 02-12-2015 |
20160075817 | Low Emissions Polyurethane Foam Made with Isocyanate Reactive Amine Catalyst - Tertiary amine catalysts having isocyanate reactive groups that are capable of forming thermally stable covalent bonds able to withstand temperatures from 120° C. and higher and up to 250° C. are disclosed. These catalyst can be used to produce polyurethane foam having the following desirable characteristics: a) very low chemical emissions over a wide range of environmental conditions and isocyanate indexes (e.g., indexes as low as 65 but higher than 60) ; b) sufficient hydrolytic stability to maintain the catalyst covalently bound to foam without leaching of tertiary amine catalyst when foam is exposed to water or aqueous solutions even at temperatures higher than ambient (temperature range 25° C. to 90° C.); and c) stable contact interface between the polyurethane polymer and other polymers (for example polycarbonate) with minimal migration of tertiary amine catalyst from polyurethane polymer to other polymers yielding no noticeable polymer deterioration at the point of contact even under conditions of heat and humidity. | 03-17-2016 |
20160075846 | PRODUCTION OF VISCOELASTIC POLYURETHANE SYSTEMS USING BLOCK POLYMERS HAVING BONDED SILOXANE BLOCKS AS CELL OPENERS - The use of bonded siloxane block polymers of the general average formula (I) M | 03-17-2016 |
20160145374 | POLYOL MIXTURE FOR PRODUCING RIGID POLYURETHANE FOAM - A polyol mixture for producing a rigid polyurethane foam, the polyol mixture containing (A) a polyol component having a hydroxyl value of 100 mgKOH/g or more and 550 mgKOH/g or less; (B) a blowing agent containing one or more hydrohaloolefin-based blowing agents selected from the group consisting of trans-1-chloro-3,3,3-trifluoro-1-propene (B1) and cis-1,1,1,4,4,4-hexafluoro-2-butene (B2); (C) a catalyst containing an imidazole-based catalyst (C1) represented by the formula (I); (D) an organic acid containing one or more members selected from the group consisting of succinic acid and glutaric acid; and (E) a foam stabilizer. The polyurethane foam obtained by using a polyol mixture of the present invention can be suitably used as insulation materials for construction materials, refrigerators, refrigerating/freezing warehouses, bath tubs, and pipes; dew stoppers for houses, apartment houses, industrial pipes, and the like. | 05-26-2016 |
20160200888 | NOVEL POLYURETHANE CURATIVES | 07-14-2016 |