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3991039 One part curing compositions for mercaptan polymers  
Single component liquid mercaptan containing polymers having at least two terminal mercaptan groups can be cured rapidly by exposure to atmospheric oxygen in the presence of (1) a thiuram and an...
3988276 Solid polysulfide containing hot melt sealants, adhesives and the like  
Solvent-free hot melt compositions for use as sealants, adhesives, caulking compounds or the like are produced by intimately blending elastomeric polymers with tackifying resins and plasticizers...
3985708 Polymeric reaction products of thiodiethanol and diphenols  
A vulcanizable elastomer composition is provided which comprises a copolymer represented by the formula: H -- -- OG -- --x OHwherein -- -- OG -- -- comprises randomly alternating structural units...
3963605 Coated shaker screen apparatus and method  
A screen with a solid arylene sulfide polymer-polytetrafluoroethylene coating is provided that is suitable for use in a solids separating device. The poly(arylene sulfide)-polytetrafluoroethylene...
3962184 Process for preparing cured resin from cyanic acid esters using imidazole catalysts  
A process for preparing a cured resin which comprises curing a specific cyanic acid ester or its prepolymer containing a triazine ring and having a molecular weight of 400 to 6,000 in the presence...
3962186 Curable composition of a polyepoxide with a methylol derivative of a polythiol  
Formaldehyde is reacted with a polythiol to give novel methylol derivatives of the polythiol. The methylol derivatives are useful in curing polyepoxides.
3954685 Sulfur foam product and process  
A process for producing a sulfur foam which comprises forming a sulfur system containing an aliphatic polysulfide and optionally molten elemental sulfur, contacting and reacting an acid with the...
3951927 Vulcanizable elastomers from polythiodiethanol  
A vulcanizable elastomer composition is provided comprising a copolymer represented by the formula: H---- OG ----n OHwherein ---- OG ----consists of randomly alternating structural units (I) and...
3948865 Chemical treatment of arylene sulfide polymers  
The properties of arylene sulfide polymers are improved by treating the polymer with a fluid treating agent selected from the group consisting of hydrogen peroxide, an alkali metal or alkaline...
3948866 Polymerization with the aid of macromolecule having both a monomer soluble portion and suspension soluble portion  
A process for the suspension polymerization of ethylenically unsaturated monomers -- particularly for the preparation of water-soluble polymers -- wherein a liquid monomer phase is polymerized...
3945973 N,N'-Diglycidyl-N,N'-dialkyl aryl disulfonamides  
N,N'-diglycidyl-N,N'-dialkyl aryl disulfonamides are prepared having an epoxy equivalent weight range from about 234 to about 1100. These polyepoxides are useful to make coated articles having...
3940375 Arylene sulfide polymers  
A method is provided for producing arylene sulfide polymers employing (1) alkali metal salts of halothiophenols, (2) organic amides, and (3) dihalo aromatic compounds.
3928661 Selective coating of a substrate with poly(arylene sulfide)  
A substrate surface which is to be partially coated with poly(arylene sulfide) is masked, in those areas not to be coated, with a masking composition containing diatomaceous earth, alkaline earth...
3923753 1,4-Dihydronaphthalene derivatives  
2,3-thioepoxytetralin, poly(2,3-thioepoxytetralin) and bis-(1,4-dihydronaphtho)[2,3-c; 2,3-f] 1,2,5-trithiepane.
3919177 P-phenylene sulfide polymers  
P-Phenylene sulfide polymers are produced by reacting at least one p-dihalobenzene with a mixture in which at least one after-defined source of sulfur, at least one alkali metal carboxylate and at...
3914265 Dialkylaminosulfur trifluorides as fluorinating agents  
Dialkylaminosulfur trifluorides such as diethylaminosulfur trifluoride are useful in replacing hydroxyl group and carbonyl oxygen with fluorine in various organic compounds.
3912695 Fibrous articles from phenylene sulfide polymers  
Strong, high modulus, high-melting, non-burning fibers produced from aromatic sulfide polymers, such as phenylene sulfide polymers, by melt spinning an aromatic sulfide polymer having a melt flow...
3898204 Production of fibers from phenylene sulfide polymers  
Strong, high modulus, high-melting, non-burning fibers are formed from aromatic sulfide polymers, such as phenylene sulfide polymers, by melt spinning an aromatic sulfide polymer having a melt...
3894983 Poly(arylene sulfide) coating  
Addition of a siliceous material having a particle size of less than 10 microns to a poly(arylene sulfide) coating formulation yields a coating with improved surface characteristics for use as a...
3890278 Anionic polymerization  
A novel process for polymerization or copolymerization of monomers is described, according to which the reaction is carried out in the presence of an anionic initiator and a macroheterocyclic...
3884884 Arylene sulfide polymers  
A method of producing arylene sulfide polymers employing (1) polyhalosubstituted aromatic compounds; (2) after-defined sources of sulfur; and (3) alkali metal aminoalkanoates.
3884908 Strong acid neutralization of polymeric alcohol xanthates  
A process for neutralizing the free excess alkali in a polymeric alcohol xanthate comprises dispersing particulate polymeric alcohol xanthate in an inert liquid vehicle in which said xanthate is...
3877970 SELECTIVE CURING OF MULTIPLE LAYERS OF POLYARYLENE SULFIDE COATINGS  
An arylene sulfide coating composition containing a fluorocarbon polymer is applied as a first or base coat to a substrate and cured under conditions to give only a partial cure. Multiple base...
3875114 Amidomethylene modified aromatic carbocyclic polymers and methods for making the same  
Amidomethylene substituted aromatic carbocyclic polymers containing a chemically combined phenylene radical are obtained by interreacting in the presence of an effective amount of a suitable...
3856740 POLYSULFIDE RUBBER SEALANT COMPOSITION  
A sealant composition having superior characteristic features which comprises a liquid polysulfide rubber vulcanizable by a vulcanizing agent and a plasticizer comprising a compound or mixture of...
3856735 INCORPORATION OF HIGH MOLECULAR WEIGHT FLUOROCARBON POLYMER IN ARYLENE SULFIDE POLYMER  
High molecular weight fluorocarbon polymer is incorporated into arylene sulfide polymer coating dispersions by (a) intensive milling of the fluorocarbon polymer and a liquid capable of wetting...
3856560 ARYLENE SULFIDE POLYMER COATING COMPOSITIONS  
Adherent coatings of arylene sulfide polymers are formed by applying to substrates a mixture of an arylene sulfide polymer and selected nitrogenous organic compounds. The arylene sulfide...
3856387 SOUND EDITOR FOR SOUND MOTION PICTURE PROJECTOR  
A sound motion picture production and sound editing system in which film, packaged in a cassette containing a supply of processing composition can be automatically processed, projected and...
3852214 LIQUID POLYSULFIDE POLYMER GLASS-TO-METAL SEALANT COMPOSITION  
A liquid polysulfide polymer sealant composition for sealing glass to metal having greatly improved adhesion stability when exposed to ultraviolet radiation or sunlight transmitted through glass...
3849386 ONE-PACKAGE MOISTURE ACTIVATABLE POLYSULFIDE SEALANTS  
3846306 BONDING OF ENZYMES,ENZYME DERIVATIVES AND OTHER BIOLOGICALLY ACTIVE MOLECULES TO POLYMERIC MATERIALS  
3839301 POLY(ARYLENE SULFIDE) RESIN HEAT TREATMENT AND CURING  
The processing characteristics of poly(arylene sulfide) resins are improved by incorporating therein a small effective amount of at least one sulfur-containing compound selected from sulfur acids...
3824259 SULPHUR-CONTAINING EPOXIDES  
3822241 VULCANIZATION OF EPIHALOHYDRIN POLYMERS  
3817920 THERMOSETTING POLY(HEXASUBSTITUTED MELAMINES)  
3804829 DIAZIRIDINONES  
3800845 SOLVENT REMOVAL FROM POLY(ARYLENE SULFIDE) REACTION SLURRY  
A method is provided for the removal of polar organic diluent from a reaction slurry of poly(arylene sulfide) solid polymer particles, organic polar diluent, by-product alkali metal halide, and...
3799454 PREPARATION OF ARYLENE SULFIDE POLYMER COATING DISPERSION CONTAINING FLUOROCARBON POLYMER  
A coating composition is produced by first milling particulate arylene sulfide in a liquid such as water with a non-ionic surface active agent to produce a dispersion and thereafter mixing this...
3792018 PREPARATION OF CLEAR EPOXY RESINS CONTAINING HIGH MOLECULAR WEIGHT TRIEPOXIDE FLEXIBILIZERS  
3792016 METAL IMIDAZOLATE-CATALYZED SYSTEMS  
3790536 ARYLENE SULFIDE POLYMER PROCESS  
3790535 METHOD OF REGENERATING CHELATE RESINS HAVING MERCURY ADSORBED THERETO  
3790524 PROCESS FOR PREPARING VULCANIZED EPIHALOHYDRIN POLYMERS  
3784537 CONJUGATION OF UNSATURATED FATTY MATERIALS  
3784647 CURING EPOXIDE RESIN WITH BORON TRICHLORIDE-AMINE COMPLEX  
3784529 POLYMERIC QUATERNARY AMMONIUM COMPOUNDS AND METHODS FOR MAKING SAME  
3779991 SILICON-HYDANTOIN-ESTER RESINS  
3775366 PROCESS FOR CROSS-LINKING OF NATURAL AND SYNTHETIC RUBBER CONTAINING FILLERS  
3773718 METHOD FOR MAKING IMIDO-SUBSTITUTED AROMATIC POLYMERS  
3770661 ARYLENEISOPROPYLIDENE COPOLYMERS