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7612149 |
Vulcanizable chlorinated elastomer compositions with improved processing safety and cure rate
The instant invention is an improved cure system composition and a method for curing chlorinated elastomer compositions. The cure system composition includes a polymercapto crosslinking agent, an...
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7550540 |
Rubber composition and articles therefrom both comprising mercapto-functional silane
The disclosure herein relates to organofunctional silanes and mixtures of organofunctional silanes possessing mercaptan and hydrocarbyl and/or heterocarbyl functionality. These silanes reduce or...
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7446151 |
Process for production of high-isoprene butyl rubber
The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less...
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7439309 |
Silver halide photographic light-sensitive material, photographic emulsion, and mercapto group-containing polymer compound used for them
Disclosed is a silver halide photographic light-sensitive material, which has at least one polymer compound having a nitrogen-containing aromatic ring having a mercapto group represented by the...
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7262253 |
Process for the preparation of amphiphilic poly (N-vinyl-2-pyrrolidone) block copolymers
The instant invention provides a two-step polymerization process for preparing amphiphilic poly(N-vinyl-2-pyrrolidone), (PVP)-block-polyester copolymers and other diblock and triblock copolymers...
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7160955 |
Sulfoxides or sulfones grafted onto polymers
Polymers grafted with a compound of formula I, formula (I) wherein the general symbols are as defined in claim 1, have outstanding stability against oxidative, thermal, dynamic, light-induced...
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7122590 |
Blocked mercaptosilane coupling agents for filled rubbers
Disclosed herein is a process of manufacturing a filled rubber comprising the steps of:
mixing a rubber, an inorganic filler, and a blocked mercaptosilane of a structure defined herein, to...
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7045579 |
Coating composition comprising an acetal-functional binder
The invention relates to a coating composition comprising an acetal-functional binder and a thiol-functional cross-linker, wherein the acetal-functional binder is represented by the following...
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6784256 |
End-functionalized polymers by controlled free-radical polymerization process and polymers made therefrom
A controlled free-radical polymerization process for forming end-functionalized polymers is disclosed, particularly by degenerative iodine transfer. The end-functionalized polymers are...
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6541572 |
Method of making high refractive index ophthalmic device materials
Disclosed is a two-step method of making soft, high refractive index, acrylic ophthalmic device materials. In the first step, a copolymer containing pendant oxirane groups is formed by...
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6521715 |
Graft copolymer pigment dispersants
A polymer dispersant for pigments based on an acrylic graft copolymer wherein the graft copolymer has a weight average molecular weight of 3,000-100,000 and comprises a polymeric backbone and...
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6476183 |
Coating composition comprising an oxidatively drying polyunsaturated condensation product, a polythiol, and a siccative
Coating composition and its use in a one-pot system. The coating composition comprises: an oxidatively drying polyunsaturated condensation product, such as an alkyd, having pendant groups in an...
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6437012 |
Low-swelling, macroporous polymer-supported reagents for organic synthesis and purification
A low-swelling, highly crosslinked, macroporous polystyrene resin containing functional groups which are capable of selectively binding to reaction impurities, such as excess reactant or reaction...
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6420489 |
Polymer bromination process in solution
An improved process is provided for the bromination of isoolefin-conjugated diolefin polymers by brominating said polymer in solution in selected halogen-containing hydrocarbons as solvent. There...
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6372857 |
Microgel-containing rubber mixtures with masked bi-functional mercaptans and vulcanization products produced therefrom
The invention relates to rubber mixtures of at least one rubber containing double bonds, at least one rubber gel and at least one masked bismercaptan, and to vulcanization products and rubber...
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6346637 |
Ether containing siloxy compounds
The present invention relates to compounds of the formula where R 1 , R 2 and R 3 are independently selected from alkoxy radicals having from 1 to 8 carbon atoms; R 4 and R 5 are...
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RE37527 |
Heat-resistant rubber composition
A heat-resistant rubber composition of the invention is a vulcanizable composition comprising a specific ethylene-α-olefin-nonconjugated polyene copolymer rubber (A) and an organic peroxide (B)....
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6319994 |
Solution rubbers containing hydroxyl groups
The invention relates to rubber blends containing said at least one solution-polymerized rubber containing hydroxyl groups, synthesized from diolefins and vinylaromatic monomers, wherein said at...
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6248841 |
Elastomer treatment process to decrease peroxide levels
A novel process has been developed for the treatment of crosslinked ethylene-propylene diene monomer (EPDM) elastomer material to decrease its residual peroxide levels. EPDM is used to form the...
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6221976 |
Polymers containing partially neutralized silanols
A shelf-stable water-borne dispersion or solution that cures rapidly and at low temperatures when coated onto a substrate can be prepared with an aqueous-based solution or stable aqueous dispersion...
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6221970 |
Curable perfluoroelastomer composition
Curable perfluoroelastomer compositions are disclosed that comprise ammonia and uncured perfluorinated elastomers having copolymerized units of nitrile-containing cure site monomers. Such...
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6204339 |
Elastomeric composition comprising a blocked mercaptosilane coupling agent and a deblocking agent
This invention describes the use of blocked mercaptosilanes wherein the hydrogen atom of the mercaptan functionality has been substituted to manufacture coating, adhesive, sealant and elastomeric...
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6127327 |
Polymeric multifunctional lubricant additives
Described are products suitable as lubricant and fuel additives which are obtainable by reacting a polyunsaturated polymer, for example polybutadiene, polyisoprene, ring-opening polymerised...
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6100339 |
Curable resin and resin composition comprising the same
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6093775 |
Polymers with pendant fluoroalkylsulfide groups
Polymers having pendant fluoroalkylsulfide side chains and processes for their preparation by nucleophilic displacement of halides in preformed polymers using fluoroalkylthiols are disclosed which...
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6015862 |
Functionalized α-olefin/para-alkylstyrene terpolymers
Functionalized terpolymers of two different α-olefin and para-alkylstyrene are disclosed, wherein the functionalized terpolymers have a substantially homogeneous compositional distribution...
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5998564 |
Process for producing bisthiophenolperfluoroalkylidene compound
2.2'-bis(3-mercaptophenyl)hexafluoropropane [bisthio-phenol AF] is obtained in good yield by chlorosulfonating 2.2'-bisphenylhexafluoropropane and reducing the thus quantitatively obtained...
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5891964 |
Crosslinkable composition of fluoroelastomer and bisthiophenolperfluoroalkylidene
2,2 bis(3-mercaptophenyl)hexafluoropropane bisthiophenol AF! is obtained in good yield by chlorosulfonating 2,2'-bisphenylhexafluoropropane and reducing the thus quantitatively obtained...
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5824749 |
Fluorine-containing elastomer composition
A fluorine-containing elastomer composition, which comprises a terpolymer of tetrafluoroethylene, perfluoro(lower alkyl vinyl ether) or perfluoro (lower alkoxy-lower alkyl vinyl ether) and...
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5798421 |
Water-soluble associative triblock copolymers
This invention relates to copolymers of molecular mass of between 5,000 and 300,000, consisting of a hydrophilic central portion, for example a polyacrylamide chain, and of hydrophobic ends the...
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5710211 |
Process for producing vinyl alcohol polymer
According to the present invention, there are provided a process for producing a vinyl alcohol polymer comprising reaction of a vinyl ester polymer (A) having an epoxy group with a compound (B)...
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5693720 |
Solid-phase synthesis utilizing photochemical carbon-sulfur bond cleavage of thioethers
A method for photochemical cleavage of carbon-sulfur bonds in conjunction with solid-phase synthesis utilizing a deoxygenated solvent and light to cleave the carbon-sulfur bond from a heterogeneous...
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5688872 |
Bisaminothiophenol compound, process for producing the same and curing agent for fluorine-containing elastomer comprising the same
2,2-bis(4-aminophenyl)hexafluoropropane is allowed to react with potassium thiocyanate and bromine to obtain 2,2-bis(5-amino-4,6-benzothiazolyl)hexafluoropropaneo which is allowed to further react...
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5684093 |
Nitrogen-containing compounds
Nitrogen-containing functionalised polymers may be obtained by reacting olefinically-unsaturated polymers and N-substituted amido or imido compounds in the presence of an acid catalyst. The...
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5667858 |
Pressure sensitive adhesive composition and products
A pressure sensitive adhesive composition is provided having about 100 parts by weight of a crosslinkable elastomer, from 20-100 parts by weight of a tackifying resin, at least 0.1 part by weight...
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5665829 |
Process for the polymerization of olefinic-containing monomers employing anionic initiators
Siloxy-terminated hydrocarbon polymers containing at least one polymer chain per molecule of the formula: ##STR1## wherein R 1 , R 2 and R 3 are independently selected from saturated and...
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5612402 |
Curable polysulfide polymer composition
The invention relates to a curable polysulfide composition, which has an application in making a preserving coating, and an insulator in the field of road construction, house building, etc. The...
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5561168 |
Iodide removal process
This invention relates to the use of ion exchange resins having metal-exchanged thiol functional groups in removing iodide impurities from carboxylic acids and/or carboxylic acid anhydrides. More...
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5514755 |
Coating compositions comprising isobornyl methacrylate and 4-hydroxybutyl acrylate
A hydroxyl functional acrylic addition polymer, useful in producing refinish compositions having a good balance of solids at a given viscosity and final film hardness, which comprises units derived...
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5461118 |
Para-alkylstyrene/isoolefin copolymers functionalized with an amine alkylthioethers or hydroxy-alkylthioethers and their use in polymer blends
Functionalized copolymers of a C 4 to C 7 iso-olefin and para-alkylstyrene are provided which are prepared by a nucleophilic displacement of at least a portion of benzylic halogen present in the...
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5385980 |
Curable halobutyl rubber/poly-epihalohydrin rubber blends
A curable halobutyl rubber/polyepihalohydrin rubber blend comprises a cure system consisting essentially of (a) sulfur, (b) sulfur accelerator, (c) zinc-containing promoter, (d) urea or urea...
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5360873 |
Actinic radiation-reactive pressure-sensitive adhesive composition
An actinic radiation-reactive pressure-sensitive adhesive composition which can be cured in air at a high speed, without irritation and bad smell, comprises 1 a pressure-sensitive adhesive...
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5349008 |
Process for suspension polymerization of vinyl compound
Disclosed herein is a process for suspension polymerization of a vinyl polymer which comprises using as the suspending agent a polyvinyl ester polymer having an ionic group at an end thereof or a...
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5296555 |
Rubber composition of strong adhesion to metal and hose structure using the same
Rubber compositions are disclosed which are tailored to exhibit high adhesion to brass, sufficient resistance to heat and to oil and great elasticity. A selected class of highly hydrogenated...
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5286789 |
Solid phase multiple peptide synthesis
Methods and compositions are provided, where oligopeptides are produced on a transparent surface while retaining transparency by the cyclical addition of protected monomers. Reagents are...
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5272217 |
Anisotropic polymers
Anisotropically conductive solid polymeric complexes are provided of the formula: ##STR1## wherein P + is a cationic polymer, such as a quaternary polyamine, and n and m are selected so that the...
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5260424 |
B-(keto or sulfonyl) esters from reaction of silylketene acetal and acyl or sulfonyl compound
Silylketene acetals, including "living" GTP polymers, are acylated or sulfonylated in the presence of GTP-effective catalysts with acyl or sulfonyl compounds to produce β-ketoesters or...
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5247027 |
Age-resisting polymers comprised of segmetric units which are derived from N-(4-anilino-phenyl) -α-mercaptoacetamide or N-(4-anilino phenyl)- β-mercaptopropionamide
This invention relates to polymers which contain amino-sulfide age-resistant groups, and their preparation by reaction of aminomercaptans.
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5212253 |
Electrophoresis element comprising a polymer containing a haloacetamido group
Described are novel acrylic monomers, homopolymers and copolymers prepared therefrom, and electrophoresis gel media prepared by crosslinking certain copolymers of the invention by a crosslinking...
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5191061 |
Resin for high-refraction lens containing a sulfur-containing aromatic(meth)acrylate and a mercapto compound
A cured resin for high-fraction lenses is disclosed, which is obtained by polymerizing a composition comprising (A) from 70 to 99 parts by weight of a sulfur-containing aromatic (meth)acrylate...
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