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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
528405000 With reactant which is devoid of a heterocyclic ring containing oxygen, selenium or tellurium atoms as ring members 44
528408000 Polymerizing in the presence of a specified material other than a reactant 26
528421000 Reactant has a three-membered ring containing oxygen and two carbon atoms, i.e., 1,2-epoxy 18
528417000 Reactant contains a single hetero-atom in a ring and at least three carbon atoms, e.g., oxetane, etc. 3
20110196126VAPOR-PHASE DECARBONYLATION PROCESS - A process is provided for the synthesis of furan and related compounds by vapor phase decarbonylation of furfural and derivatives. The reaction rate, conversion, and selectivity are enhanced by adding water to the feed. The process can be run at lower temperatures than in similar processes run with essentially dry furan and related compounds.08-11-2011
20080214779Polymers with pendant alkyl chains - A hydrophobic polymer made by incorporating alkyl chains pendant to the main backbone of the polymer. Alkyl chains of from about 6 to over 22 carbons are fatty compounds well known in the art. The present invention allows linking such chains from commercially available starting materials. It is well known that starting materials such as tallow diamine or ethoxylated tallow amine typically contain a mixture of chain lengths with varying degrees of branching and unsaturation. The unsaturated positions in the final polymer can be made to cross-link in the presence of a catylst and UV light to increase the hardness and reduce the effect of heat and solvent borne exposures. The present invention can be a replacement to current monomers or additive to common polymers to replace or modify the current polymers to alter the properties of the polymer or economics. The present invention adds the known benefits of fatty compounds to common polymers such as hydrophobicity, or alter the HLB (hydrophilic lipophilic balance) of polymeric surfactants. The present invention is directed primarily to urea, urethane, and urea-urethane linkages, but is expected to be useful in the incorporation of pendant alkyl structures in other types of polymers that use an amine, carboxcylic acid or alcohol group to form the linkage. Other polymer types which can utilize this invention that are obvious to one skilled in the art include, but are not limited to the following: polyamide, polyester, polycarbonate, polyether, polysiloxane, epoxy.09-04-2008
20080200641AMINO ACID SUBSTITUTED MOLECULES - The invention provides compositions and methods of identifying, modifying and producing modified target molecules, including therapeutic molecules by modification with non-natural amino acids. Certain aspects of the invention include methods of adding a chemical moiety to a target molecule, and the compositions resulting therefrom. Certain aspects of the invention also relate to kits for identifying, modifying and producing modified target molecules described herein.08-21-2008
528418000 Reactant contains two or more rings each of said rings having a single oxygen and two carbon atoms 2
20090281275Curable resin compositions and interlayer dielectric films - A curable resin composition includes a cycloaliphatic epoxy compound of following Formula (1):11-12-2009
20120309933DIVINYLARENE DIOXIDE RESINS - A hydrolyzed divinylarene dioxide resin composition including the reaction product of (a) a divinylarene dioxide, and (b) water; a process for making the hydrolyzed divinylarene dioxide resin composition; and a curable hydrolyzed divinylarene dioxide resin composition made therefrom. The cured product made from the above hydrolyzed divinylarene dioxide resin composition offers improved properties such as a lower viscosity and a high heat resistance compared to known cured products prepared from known epoxy resins.12-06-2012
528419000 Two or more heterocyclic reactants containing rings of one oxygen and two carbon atoms 1
20100056753 METHOD OF PRODUCING A POLY (ETHYLENE OXIDE ) COPOLYMERISED WITH AT LEAST ONE OTHER ALKYLENE OXIDE - The present invention relates to a method of producing a poly(ethylene oxide) copolymerized with one alkylene oxide and to a poly(ethylene oxide-co-alkylene oxide) copolymer produced by such method, a photovoltaic device containing such poly(ethylene oxide-co-alkylene oxide)-copolymer, and to uses of such poly(ethylene oxide)-(alkylene oxide)-copolymer.03-04-2010
20100145004RIGID-ROD COPOLYMER COMPOSITIONS AND THE POLYMERIC FIBERS FABRICATED FROM THOSE COMPOSITIONS FOR ENHANCED FLAME RESISTANCE - Rigid-rod copolymer compositions incorporating PBO (poly(p-phenylenebenzobisoxazole)), DiOH-PBO (poly(2,5-dihydroxy-1,4-phenylenebenzobisoxazole), DiOH-PBI (poly(2,5-dihydroxy-1,4-phenylenebenzobisimidazole)), DiOH-PyBI (poly(2,5-dihydroxy-1,4-phenylenepyridobisimidazole), PBZT (poly(p-phenylenebenzobisthiazole)) and its corresponding dihydroxy analogues attached to a flexibilizing hexafluoroisopropylidene linkage are described. Also described are their fabrication into fibers by a dry jet wet spinning technique and the measured fiber mechanical properties. The copolymer compositions are highly flame-resistant and have potential utility for fire-protective clothing.06-10-2010
20090306335MULTIFUNCTIONAL DEGRADABLE NANOPARTICLES WITH CONTROL OVER SIZE AND FUNCTIONALITIES - In one aspect, the invention relates to polymers, crosslinked polymers, functionalized polymers, nanoparticles, and functionalized nanoparticles and methods of making and using same. In one aspect, the invention relates to degradable polymer and degradable nanoparticles. In one aspect, the invention relates to methods of preparing degradable nanoparticles and, more specifically, methods of controlling particle size during the preparation of degradable nanoparticles. In one aspect, the degradable nanoparticles are useful for complexing, delivering, and releasing payloads, including pharmaceutically active payloads. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.12-10-2009
20090270587Oxymethylene Polymers, Process for the Preparation Thereof and Use Thereof - Oxymethylene polymers having a bimodal distribution or having a distribution of higher modality and having a targeted content of a low molecular weight fraction of from 1 to 5 percent by mass are described. Moldings of these polymers are distinguished by high low-temperature notched impact strength associated with a high modulus of elasticity.10-29-2009
20100249368Multi-Armed Forms of Activated Polyoxazoline and Methods of Synthesis Thereof - The present disclosure provides novel POZ-2 derivatives, methods for synthesizing POZ-2 derivatives and intermediates useful in such methods. In one embodiment, the POZ-2 derivative comprises two linear POZ chains of the present disclosure linked directly or indirectly to a branching moiety that contains a functional group for linking the POZ-2 derivative to the target molecule. Target molecule-POZ-2 conjugates are also described. In certain embodiment, the POZ-2 derivatives have low polydispersity values and a decreased amount of impurities produced by unwanted side reactions, such as, but not limited to, chain transfer.09-30-2010
20100280219OLIGOCARBONATE MOLECULAR TRANSPORTERS - A cyclic carbonate monomer, including:11-04-2010
20090105447Novel Polymers - The present invention relates to polymers comprising a repeating unit of the formula (I), and their use in electronic devices. The polymers according to the invention have excellent 5 solubility in organic solvents and excellent film-forming properties. In addition, high charge carrier mobilities and high temperature stability of the emission color are observed, if the polymers according to the invention are used in polymer light emitting diodes (PLEDs).04-23-2009
20100063249PROTON-CONDUCTING COMPOUND AND PROTON-CONDUCTING POLYMER - Provided is a proton-conducting compound which provides proton conductivity without humidification and is suitable for electrochemical device materials such as solid electrolytes for fuel cells and electrolytes for batteries. Provided also is a proton-conducting polymer. The proton-conducting compound is composed of a melamine compound salt obtained from a melamine compound represented by the following formula (1) and a Bronsted acid and the proton-conducting polymer is obtained by homopolymerizing or copolymerizing the melamine compound salt. In formula (1), R03-11-2010
20080214778Method For Producing Polyether Alcohols - The invention provides a process for continuously preparing polyether alcohols using DMC catalysts, which comprises, in a first step, in a continuous reactor, adding alkylene oxides onto H-functional starter substances and transferring the output of this reactor to a second step in a reactor which is divided by closed trays into mutually separate sections, known as compartments, which are connected to one another by external pipelines, in which the output of the reactor from the first step of the reaction passes through the compartments in succession.09-04-2008
20090187003THERMOSETTING RESIN, THERMOSETTING COMPOSITION CONTAINING SAME, AND MOLDED PRODUCT OBTAINED FROM SAME - An object of the invention is to provide a thermosetting resin excellent in dielectric characteristics and heat resistance, and to provide a thermosetting composition comprising the thermosetting resin, as well as a molded product, substrate material for electronic devices and so forth obtained from the thermosetting resin. The present invention provides a thermosetting resin having a dihydrobenzoxazine ring structure represented by formula (I) in a main chain thereof, a thermosetting composition comprising the thermosetting resin, as well as a molded product, substrate material for electronic devices and so forth obtained from the thermosetting resin.07-23-2009
20130102756NOVEL CURING AGENTS - A curable resin comprising a compound having the structure (I): wherein each carbon 2, together with either its carbon 1 or carbon 3, arc members of a fused cycloaliphatic ring, and when carbon 1 is a member of the ring so is N, and wherein each of the aliphatic or aromatic ring-member carbons may either be members of further fused cycloaliphatic rings or be bonded to a group selected from H or linear or branched C04-25-2013
20130144030EPOXY COMPOUND, CURABLE COMPOSITION, AND CURED PRODUCT THEREOF - A problem to be solved by the invention is to provide a novel epoxy resin exhibiting excellent performance with respect to heat resistance and low thermal expansibility of a cured product, a curable composition using the same, and a cured product having excellent heat resistance and low thermal expansibility. The curable composition contains an epoxy compound and a curing agent as essential components, a calixarene-type novel epoxy compound being used as the epoxy compound. The novel epoxy compound has a resin structure represented by structural formula 1 below (in the formula, R06-06-2013