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4882399 Epoxy resins having reversible crosslinks  
A method for the preparation of insoluble, infusible epoxy resins containing reversible crosslinks comprising the steps of: (a) forming a reaction mixture of (i) an epoxy compound having two or...
4871595 Lyotropic liquid crystalline oriented polymer substrate for printed wire board  
The present invention is directed to the use of ordered polymers as a substrate material for the preparation of printed wire boards (PWB). In preferred embodiments, the PWB of the present...
4857599 Modified dense star polymers  
Dense star polymers on immobilized cores are very useful as ion-exchange resins and chelation resins. For example, an aminated form of chloromethylated styrene/divinyl benzene copolymer can be...
4855398 Reaction of bicyclic amide acetal with urea  
A process for producing oligomeric compounds containing hydroxy alkyl amide groups by the reaction at a temperature in excess of about 100 degrees C. of a bicyclic amide acetal with a member...
4853458 Carboxy-functionalized polycarbonate from carboxyphenol  
Carboxy-functionalized polycarbonates are prepared by incorporating a carboxylic acid-substituted phenol, preferably t-butyl p-hydroxybenzoate, as a chainstopper in a polycarbonate-forming...
4851502 Side chain liquid crystalline condensation polymers exhibiting nonlinear optical response  
This invention provides novel side chain liquid crystalline polymers with a polyester or polyamide main chain structure. An invention polymer exhibits nonlinear optical response, and has utility...
4826930 Melamine-diamine condensates and the cure of 1,2-epoxide resins therewith  
Novel melamine-poly(oxyethylene or oxypropylene) diamine condensates are prepared which have the formula: ##STR1## Wherein: R represents H or --NH--CHR'--(CH2)x --[--O--CH2 --CHR"--]n --O--(CH2)x...
4816547 Process for producing carbon dichalcogenide homopolymer and homopolymer produced thereby  
The present invention provides a process for producing carbon dichalcogen polymers having a conductivity of about 10-8 S/cm without doping treatment which is increased to 10-4 to 10-2 S/cm by...
4816335 High-quality polyarylene-thioether fibers and method for production thereof  
High-quality polyarylene-thioether fibers are provided, which simultaneously satisfy the following conditions: (a) the polyarylene-thioether is a linear polyarylene-thioether having a melt...
4816546 Mixed epoxy resins comprising sulfide containing aliphatic epoxy resins  
Novel epoxy resins are prepared by dehydrohalogenating the reaction product of an epihalohydrin and a hydroxyalkyl containing polysulfide.
4785070 Imidazolinone-containing copolymer  
A novel class of heterocyclic polymers and copolymers containing the 2-imidazolin-5-one ring structure is described. These polymers are prepared by reaction of bisazlactones and diamines, with or...
4757119 Epoxy resin compositions containing poly-(hydrocarbylthio)aromatic diamines  
Novel compositions suitable for use in preparing prepregs comprise an epoxy resin and a poly(hydrocarbylthio)aromatic diamine curing agent, preferably a substituted di(alkylthio)-diaminobenzene...
4754016 Process for preparing polyamide with organic phosphine/organic disulfide mixture condensing agent  
A process for preparing a polyamide which comprises polycondensing a dicarboxylic acid and a diamine by using a combination of at least one phosphine and at least one disulfide as the condensing...
4745175 Condensation products of thioalkylene oxides of polythio-alkylene oxides with polyalkylene oxides, their preparation and their use as breakers for water-in-oil emulsions  
New sulphur-containing polyethers based on optionally polymeric thioalkylene oxides and polyalkylene oxides, method for their preparation and their use as breakers for water-in-oil emulsions, in...
4740584 Blend of dicyanate esters of dihydric phenols  
Blends of ortho substituted dicyanate esters and unsubstituted dicyanate esters when partially reacted to form co-prepolymers are appreciably lower in viscosity at process temperatures than the...
4739029 Polymeric cyanine dye  
A polymeric tricarbocyanine dye has a rigidized chain having tricarbocyanine polymeric dye units of formula II: ##STR1## wherein Y is ##STR2## --S--, --Se--, or --O--, A is ##STR3## in which R19...
4737574 Poly(amide-thioether) containing thermoset polymeric composition from reaction of bisoxazoline with polythiol in the presence of certain cationic catalyst  
A process for preparing thermoset polymers at an improved rate by copolymerizing a bisoxazoline with a polythiol compound in the presence of a catalytic amount of an alkali metal or an alkaline...
4737550 Bridged dense star polymers  
Bridged dense star polymers having terminal group densities greater than conventional extended star polymers exhibit greater and more uniform reactivity than their corresponding conventional star...
4728712 Method of producing mercaptan terminated polymers with increased reactivity and reduced odor  
A method for producing mercaptan terminated liquid polymers with increased chemical reactivity and reduced odor is disclosed which involves heating the polymeric liquid material under conditions...
4727134 Method for preparing cyclic polycarbonate oligomer mixtures  
Cyclic polycarbonate (or thiol analog) oligomer mixtures are prepared by the reaction of bishaloformates or their thio analogs, or mixtures thereof with dihydroxy or dimercapto compounds, with...
4701514 Difunctionalized polyarylene polyethers and process for preparation thereof  
Oligomers of polyarylene polyethethers (PAPE) having a mol wt Mn in the range from 1000 to about 10,000 are converted to difunctionalized oligomers so as, in the first instance, to provide a...
4699966 Polymer bound calixarenes  
A linear or cross-linked polymer selected from polythioethers, polyethers, styrenic polymers, polyacrylates, and polyorganosiloxanes having a plurality of calixarene groups bound thereon, the...
4694066 Polyoxyalkylene polymers exhibiting nonlinear optical response  
This invention provides novel polyoxyalkylene polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in electrooptic light modulator...
4694064 Rod-shaped dendrimer  
Rod-shaped dendrimers having a plurality of dendritic branches emanating from an essentially linear core are prepared by first reacting a linear polyfunctional core compound such as a...
4686250 Moisture resistant, wet winding epoxy resin system containing aromatic diamines  
Curable thermosetting resin compositions comprising at least one cycloaliphatic epoxy resin having at least two 1,2-epoxy groups per molecule, and certain aromatic diamines having three aromatic...
4667012 Imidazolinone-containing polymer and copolymer  
A novel class of heterocyclic polymers and copolymers containing the 2-imidazolin-5-one ring structure is described. These polymers are prepared by reaction of bisazlactones and diamines, with or...
4652625 N-aminopropyl derivatives of 2,4-diamino-2-methylpentane as epoxy curing agents  
N-aminopropyl derivatives of 2,4-diamino-2-methylpentane show rapid curing when used to cure epoxy resins.
4617357 Process for reducing the content of chlorine in glycidyl compounds  
To reduce the content of chlorine in glycidyl compounds, in which the glycidyl groups are bonded to ether-oxygen, N or S atoms, these compounds are dissolved in a halogen-free inert organic...
4609762 Thioethers having a high sulfur content and method therefor  
Liquid polythioethers containing no oxygen in the polymeric backbone and a method for producing same which includes condensing an organic compound having primary mercaptan group with an organic...
4600766 Process for producing cross-linked resin from bis(2-oxazoline) and aromatic hydroxy-carboxylic acid  
A process for producing a novel cross-linked resin which comprises: reacting a bis(2-oxazoline) compound with a reactive compound which has at least one active hydrogen in the molecule, the...
4587329 Dense star polymers having two dimensional molecular diameter  
Dense star polymers having terminal group densities greater than conventional extended star polymers exhibit greater and more uniform reactivity than their corresponding conventional star...
4562243 Crosslinkable difunctionalized polyarylene polyethers  
Oligomers of polyarylene polyethers (PAPE) having a mol wt Mn in the range from 1000 to about 10,000 are converted to difunctionalized oligomers so as, in the first instance, to provide a reactive...
4540769 Preparation of N-glycidyl compounds  
Aromatic N-glycidylamines are prepared by treatment of an amine having at least one, and preferably two or more aromatic amino hydrogen atoms, with epichlorohydrin in the presence, as catalyst, of...
4526832 Antistatic packaging material and steel substrates packaged therewith  
A novel antistatic packaging material and method employing a F+ -impted electractive polymer are described. The implanted polymer contacts the surface of the substrate and conducts away any static...
4518534 Layered vanadium compounds containing phosphorus or arsenic and pendant organic groups  
A layered oxide containing vanadium together with phosphorus or arsenic and an organic group may be prepared which has a unique layered structure of the formula: VORAO3.nS or VOROAO3.nS where A is...
4476284 Polymer compositions and process  
Poly(arylene sulfide) compositions and process comprising producing poly(arylene sulfide) in the presence of a thermoplastic elastomeric hydrogenated conjugated diene/monovinyl arene block...
4451644 Process for the production of polyarylene (sulphides) having an increased thermal and chemical resistance and an improved color quality  
The invention relates to a process for the preparation of polyarylene sulphides in alkylated polyureas at a temperature of 250° to 290° C. under a pressure from 4 to 50 bars.
4439594 Curable epoxy resin compositions  
Curable compositions of matter comprising an epoxy resin and a curing agent selected from the group consisting of polyvalent metal salts of a phosphorodithioic acid, the acid being derived from...
4436880 Heat-curable epoxide resin compositions  
Compositions containing (a) an epoxide resin containing more than one 2,3-epoxypropyl group per average molecule, (b) a boron trifluoride-amine complex which is a latent hardener for epoxide...
4383080 Process for curing poly(arylene sulfides)  
A poly(arylene sulfide) polymer is cured in the presence of an ozone containing gas thereby reducing the time required for the curing process.
4378442 Polysulphide sealants  
A hardener for a polysulphide sealant comprises an inorganic peroxide and according to the invention includes as a cure control agent a naphthenate e.g. copper naphthenate and/or a phenolic...
4366307 Liquid polythioethers  
A non-crystallizing, water, solvent, fuel and temperature resistant liquid polythioether having two to four terminating radicals which do not substantially reduce the water, solvent, fuel and...
4350803 Reaction arrestment mixer head and mixing process  
A mixer mixes at least two fluid components of the type which when mixed together undergo chemical reaction to form a solid or semi-solid reaction product. The components are separately introduced...
4350810 Preparation of branched chain arylene sulfide polymer  
A process for the production of branched polymers of arylene sulfide in which a reaction mixture of (1) at least one p-dihalobenzene, (2) at least one alkali metal sulfide, (3) at least one...
4332709 Water-thinnable binders and their preparation  
Water soluble binders for can lacquers are prepared by reacting an epoxy resin (polyglycidyl ether of polyhydric phenol) with an aliphatic amino carboxylic acid, e.g., (glycine, alanine, glutamic...
4328149 Polymerization method utilizing a three-phase emulsion system  
Polymerization method utilizing a three-phase system: water-in-oil-in-water or oil-in-water-in-oil comprising the steps (a) adding the monomer material to be polymerized into the innermost water...
4321358 Water termination of poly(arylene sulfide) curing  
In the pre-curing of particulate poly(arylene sulfide) by contact with an oxygen-containing gas in a vessel at a temperature elevated to a range of about 10° to about 70° C. below the melt point...
4317757 Water-thinnable epoxy resin-sulphanilic acid binder compositions  
Water-thinnable, heat curable binders for coatings are prepared by reacting a polyglycidyl ether of a polyhydric phenol with neutralized sulphanilic acid in a ratio of from 0.9 to 1.1...
4297320 Coating polymerization reactors with the reaction products of thiodiphenols and a bleach  
This invention relates to a polymerization reaction vessel having a coating on the inner surfaces thereof resulting from applying thereto an aqueous coating composition containing the reaction...
4286018 Biaxially oriented poly-p-phenylene sulfide films  
A biaxially oriented poly-p-phenylene sulfide film comprising recurring units of the formula ##STR1## a melt viscosity of more than 100 poise and less than 600,000 poise at a shear rate of 200...