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| Number | Title | Issue Date |
| 4569991 | Production of thermoplastic resin A method for flocculating latex particles in a latex is characterized in that a water soluble cationic polymer containing a quaternary ammonium salt in its molecular chain is added as a flocculant to the latex also disclosed is a process for producing a t... | 02/11/1986 |
| 4555550 | Molding compositions based on high molecular weight polyether ester amides Improved molding compositions based on high-molecular polyether ester amides are obtained by heating at 180°-250° C. a melt containing a mixture of A. a polyether ester amide having a relative solution viscosity ηrel of at least 1.5; and B. ... | 11/26/1985 |
| 4554302 | Aromatic polycarbonate containing N,N-dialkyl amide mold release agent A composition comprising an aromatic carbonate polymer in admixture with a mold release effective amount of a compound of the formula ##STR1## wherein R1, R2 and R3 are the same or different and are alkyl of one to tw... | 11/19/1985 |
| 4544763 | Polyisocyanate binder having low toluene diisocyanate content Urethane-modified polyisocyanates prepared from toluene diisocyanate are desirable for economic, processing, and product property reasons. Such products should be low in viscosity to allow spray application and low in free TDI content to avoid undue physi... | 10/01/1985 |
| 4543105 | Modification of liquid hydrocarbons Improved rate of dissolution in liquid hydrocarbon fuels, of specified tert-butylstyrene copolymers capable of imparting anti-misting characteristics to the fuel, is obtained when the copolymer, following its production by aqueous emulsion polymerization ... | 09/24/1985 |
| 4540716 | Method for making finely divided perfluorocarbon copolymer A method for making a quite finely divided particulate copolymeric perfluorocarbon having pendant cation exchange functional groups, and having an equivalent weight of at least in excess of 900 but not greater than about 1500. In the method, the perfluoro... | 09/10/1985 |
| 4536568 | Emulsion polymer recovery by coagulation A process is provided for the coagulation of rubber polymers from aqueous emulsions thereof wherein the coagulation is undertaken in the presence of an additive selected from a polysaccharide material and from a vegetable derived proteinaceous material. T... | 08/20/1985 |
| 4536567 | Removal of the catalyst from polyphenylene ethers High molecular weight polyphenylene ethers are prepared from a monohydric phenol by an oxidative coupling reaction with oxygen in the presence of a catalyst complex obtained from a copper salt and an organic amine, and in the presence of a solvent, by a p... | 08/20/1985 |
| 4532297 | Low viscosity curable polyester resin compositions and a process for the production thereof This invention relates to low viscosity curable polyester resin compositions and a process for the preparation thereof, which compositions contain a mixture of (i) an unsaturated ester terminally modified with a reactive olefin such as dicyclopentadiene o... | 07/30/1985 |
| 4532296 | Process for producing low viscosity curable polyester resin compositions This invention relates to a process for producing low viscosity curable polyester resin compositions, which compositions contain a mixture of (i) an unsaturated ester terminally modified with a reactive olefin such as dicyclopentadiene or other Diels-Alde... | 07/30/1985 |
| 4529538 | Electrically conductive polymer compositions A conductive polymer composite system is made by dissolving an electron dting polymer and a simple or complex N-methylphenazinium TCNQ salt in a mutual solvent and casting a film of the resulting solution on a suitable substrate.... | 07/16/1985 |
| 4518769 | Fractionation of polymers Process of obtaining a high molecular weight fraction from a polar polymer which comprises the steps of first, forming a solution of the polar polymer in a solvent which is also a solvent for a selected coacervating substance, then mixing with the solutio... | 05/21/1985 |
| 4511712 | Method for isolating ionomers in the salt form Ionomers such as sulfonated polystyrenes are isolated from solutions in organic solvents (e.g., methylene chloride) in the salt form (usually the ammonium or amine salt form) by blending the ionomer solution with a solution of a salt in an organic liquid ... | 04/16/1985 |
| 4511711 | Process for producing semipermeable membrane A process for producing a semipermeable membrane having a high flux, excellent in solute rejection and useful for reverse osmosis, ultrafiltration and the like which comprises dipping a semipermeable membrane of acrylonitrile polymer containing 40-100% by... | 04/16/1985 |
| 4506037 | Production of resin foam by aqueous medium A process for producing a resin foam by using an aqueous medium, which comprises (a) treating a resin compound with said aqueous medium to cause the aqueous medium to adhere to and be held by the resin compound, said resin compound being composed of porou... | 03/19/1985 |
| 4504652 | Polyester plasticizer Disclosed is a method for reducing the odor and/or improving the performance of polyester plasticizers of the type made from a dibasic acid, a polyol, and a chain terminator wherein a molar excess of alcohol ingredients is used. Such improved polyester pl... | 03/12/1985 |
| 4503219 | Treatment of (Co)polymers to remove residual monomers (Co)polymers which are composed of one or more monomers from the group comprising (a) the vinyl-aromatic monomers and (b) the ethylenically unsaturated monomers and furthermore contain one or more monomer components (a) or (b), or (a) and (b), as unreacted res... | 03/05/1985 |
| 4501686 | Anion-doped polymers of five-membered oxygen family heterocyclic compounds and method for producing same Polymeric materials consisting essentially of a polymer of recurring units of a five-membered oxygen family heterocyclic ring which are selected from furan, thiophene, selenophene, tellurophene and derivatives thereof. The polymer is doped with anions of ... | 02/26/1985 |
| 4499008 | Method of making stable electrically conducting polymers A method of making an electrically conducting polymer is disclosed which includes poly(N-alkyl 3',3 carbazolyl) at least a portion of which is doped with a compatible charge transfer acceptor to provide p-type electrical conductivity, and in which the alk... | 02/12/1985 |
| 4493752 | Process for recovering trioxane by plural distillation A process for recovering trioxane from an aqueous solution containing trioxane and triethylamine by the distillation separation process which comprises feeding an aqueous solution containing trioxane and triethylamine to the first distillation column, dis... | 01/15/1985 |
| 4460764 | Removal of the catalyst from polyphenylene ethers In the preparation of a high molecular weight polyphenylene ether from a monohydric phenol by an oxidative coupling reaction with oxygen in the presence of a catalyst complex obtained from a metal salt and an organic amine and in the presence of a solvent... | 07/17/1984 |
| 4452725 | Stable electrically conducting polymers and method of making An electrically conducting polymer is disclosed which includes poly(N-alkyl 3',3 carbazolyl) at least a portion of which is doped with a compatible charge transfer acceptor to provide p-type electrical conductivity, and in which the alkyl group is one sel... | 06/05/1984 |
| 4446311 | Process for preparing pulverulent ethylene polymers A process for preparing pulverulent ethylene homopolymers or copolymers with a grain size of less than 200 μm which comprises contacting coarse-particled ethylene homopolymers or copolymers in the form of a suspension with an aliphatic ketone containing ... | 05/01/1984 |
| 4436900 | Process for deactivating polymerization catalyst An oxymethylene copolymer produced from trioxane, a cyclic ether and/or a cyclic formal in the presence of a cationic polymerization catalyst is contacted with a deactivating agent for the catalyst in the state of gas phase at a temperature of 160° C. or... | 03/13/1984 |
| 4429113 | Fractionation of polymers Process of obtaining a high molecular weight fraction from a polar polymer which comprises the steps of first, forming a solution of the polar polymer in a solvent which is also a solvent for a selected coacervating substance, then mixing with the solutio... | 01/31/1984 |
| 4429073 | Polyetherimide compositions and processes for production Improved polyetherimide compositions and processes for their production are described. Various polyetherimide derivatives including water-soluble and tri-functionalisocyanate cross-linked resins are described. They permit production of water-based enamels... | 01/31/1984 |
| 4407739 | Preparation of electrically conductive polymers A process for the preparation of electrically conductive polymers which have conductivities greater than 10-2 S/cm and possess improved stability to oxygen, comprising treating an organic unsaturated polymer of the series of the polyphenylenes,... | 10/04/1983 |
| 4408038 | In-line coagulation process for fluoroelastomer emulsions In-line continuous coagulation and agglomeration of fluoroelastomers produced by emulsion polymerization permits direct processing of fluoroelastomer latex into mechanical dewatering devices. Coagulant is injected into the fluoroelastomer latex countercur... | 10/04/1983 |
| 4404363 | Separation of diphasic mixtures containing aromatic polyesters Diphasic mixtures obtained from the synthesis of aromatic polyesters by the diphasic interface process may be separated into an aqueous phase and an organic phase by the addition of selected compounds.... | 09/13/1983 |
| 4399240 | Removal of acrylonitrile from latex with saturated heterocyclic amines Acrylonitrile is a monomer that is widely used in the synthesis of a vast variety of polymers. Undesirable quantities of unpolymerized residual acrylonitrile are often present in these acrylonitrile polymers. This residual or free acrylonitrile dissolved ... | 08/16/1983 |
| 4396740 | Scavenging of residual acrylonitrile monomer in ABS latex The addition of aryl methanamines such as m-xylylenediamine to polymer latices which contain residual acrylonitrile monomer is markedly effective in reducing the measurable free acrylonitrile contents of latices.... | 08/02/1983 |
| 4381392 | Method for removing chlorinated solvents from chlorinated polymers Method for removing chlorinated solvents from chlorinated polymers which retain them as a result of a chlorination process, wherein after being dried and pulverized, said chlorinated polymer is treated with a non-halogenated aliphatic organic solvent or a... | 04/26/1983 |
| 4365027 | Removal of acrylonitrile from latex with oximes Acrylonitrile is a monomer that is widely used in the synthesis of a vast variety of polymers. Undesirable quantities of unpolymerized residual acrylonitrile are often present in these acrylonitrile polymers. This residual or free acrylonitrile dissolved ... | 12/21/1982 |
| 4360644 | Preparation of electrically conductive polyaromatics A process for the preparation of electrically conductive polyaromatics having conductivities greater than 10-2 S/cm, wherein from 0.5 to 15% by weight of an oxidizing Lewis acid, e.g. antimony pentafluoride or arsenic pentafluoride, or their NO... | 11/23/1982 |
| 4356301 | Polyacetylene with anthraquinone system A process for reducing polyacetylene oxidation and embrittlement comprises treating the polyacetylene with a solution of (a) a combination of anthraquinone or an anthraquinone salt, a base and a reducing agent; or (b) pyrogallol; or (c) a hydrosulfiproces... | 10/26/1982 |
| 4349664 | Doped acetylene polymer and process for production thereof Doped acetylene polymers are produced by immersing an acetylene polymer under an inert gas atmosphere in an organic solvent solution of a dopant selected from the group consisting of a platinum group metal complex, a carbonium salt, an oxonium salt and a ... | 09/14/1982 |
| 4345052 | Method for the preparation of polyether ester amides Method for manufacturing polyether ester amides by polycondensing at ordinary or reduced pressure, optionally in the presence of catalysts. A hot melt of: (a) polyamides having carboxyl end groups with polyethers having hydroxyl end groups and amino end g... | 08/17/1982 |
| 4345067 | Emulsion polymer recovery A process is provided for the coagulation of rubber polymers from aqueous emulsions thereof wherein the coagulation is undertaken in the presence of an additive selected from a polysaccharide material and from a vegetable derived proteinaceous material. T... | 08/17/1982 |
| 4338429 | Process for working up polycarbonates The present invention relates to a process for working up alkaline two-phase mixtures which have been obtained in the synthesis of polycarbonates by the two-phase boundary process, characterized in that for the separation of the alkaline two-phase mixture... | 07/06/1982 |
| 4319020 | Polyquaternary flocculants Polyquaternary polymeric flocculants, containing a substantially reduced total residual amount of epihalohydrin and 1,3-dihalo-2-propanol and less than about 1000 ppm of dialkylamine, are produced by reacting a polyquaternary polymer prepared from epihalo... | 03/09/1982 |
