Abstract:
Ionomer compositions which have improved optical properties are disclosed. These compositions comprise ionomers which can be represented as the polymerization product of alpha-olefins having from two to eight carbon atoms, esters of alpha, beta-ethylenically-unsaturated carboxylic acids, metal salts of acrylic and methacrylic acid, and optional alpha, beta-ethylenically-unsaturated comonomers which impart some desired polymer property or properties, such as acidity and/or solvent resistivity. Also disclosed are methods of making these ionomer compositions in a reactive extruder and treating the compositions with acid to impart acidity to the compositions or to only the surface of the compositions.
Abstract:
Tractable doped electroactive polymers, comprising recurring units of a 1,3,4-heterodiazole, wherein the heteroatom is oxygen or sulfur, and a sufficient concentration of a charge-compensating ionic dopant associated therewith.
Abstract:
A process for producing N-acyl-2-pyrrolidone which comprises a contacting N-acyl allylamine with carbon monoxide in the presence of an aliphatic carboxylic acid solvent and a homogeneous catalyst of palladium or platinum coordinated with triphenylphosphine. According to a preferred embodiment, the acyl group is removed from the N-acyl-2-pyrrolidone by contacting and heating the N-acyl-2-pyrrolidone with allylamine to thereby effect transacylation and obtain product 2-pyrrolidone and N-acyl-allylamine as a recycle feed stream. Alternatively, N-acyl-2-pyrrolidone can be hydrolyzed to 2-pyrrolidone and the carboxylic acid derived from the acyl group.
Abstract:
Ionomer compositions which have improved optical properties are disclosed. These compositions comprise ionomers which can be represented as the polymerization product of alpha-olefins having from two to eight carbon atoms, esters of alpha, beta-ethylenically-unsaturated carboxylic acids, metal salts of acrylic and methacrylic acid, and optional alpha, beta-ethylenically-unsaturated comonomers which impart some desired polymer property or properties, such as acidity and/or solvent resistivity. Also disclosed are methods of making these ionomer compositions in a reactive extruder and treating the compositions with acid to impart acidity to the compositions or to only the surface of the compositions.
Abstract:
Tractable doped electroactive polymers, comprising recurring units of a 3,6-N-substituted carbazole-1,3,4-oxadiazole-2,5-diyl ring system, and a sufficient concentration of a charge-compensating ionic dopant associated therewith.
Abstract:
Tractable doped electroactive polymers, comprising recurring units of a 1,3-heteroazole, wherein the heteroatom is oxygen, sulfur or substituted nitrogen, and a sufficient concentration of a charge-compensating ionic dopant associated therewith.
Abstract:
Tractable doped electroactive polymers, comprising recurring units of a 1,4-dithiene ring system, and a sufficient concentration of a charge-compensating ionic dopant associated therewith.
Abstract:
A method for preparing a gamma-chloromethyl-gamma-butyrolactone which comprises contacting 4-pentenoic acid with air or oxygen and a catalyst comprising a noble metal halide, a variable valence transition metal halide and an alkali metal halide at a temperature between 50.degree. and 200.degree. C and superatmospheric pressure.
Abstract:
Ionomer compositions which have improved optical properties are disclosed. These compositions comprise ionomers which can be represented as the polymerization product of alpha-olefins having from two to eight carbon atoms, esters of alpha, beta-ethylenically-unsaturated carboxylic acids, metal salts of acrylic and methacrylic acid, and optional alpha, beta-ethylenically-unsaturated comonomers which impart some desired polymer property or properties, such as acidity and/or solvent resistivity. Also disclosed are methods of making these ionomer compositions in a reactive extruder and treating the compositions with acid to impart acidity to the compositions or to only the surface of the compositions.
Abstract:
A continuous process for the aminolysis of polymers produced from ethylenically unsaturated structural units comprising contacting, in a reaction vessel,(a) a molten polymer containing structural units produced from alpha-olefins having from 2 to 8 carbons atoms, and esters of of .alpha.,.beta.-ethylenically-unsaturated carboxylic acids in a reaction vessel; and(b) a liquid phase comprising an amine-containing compound, e.g., an alkylamine having an alkyl group containing 1-30 carbon atoms, ammonia, or derivatives thereof, in the presence of(c) a catalytically effective amount of a catalyst, which is preferably a metal-containing solution, for a period of time effective to produce a polymer containing acrylamide structural units, wherein the period of time is less than about 1 hour.This process is performed continuously in a reaction vessel, preferably in at least one reactive extruder, under conditions effective to provide an ethylene co-polymer containing acrylamide structural units.