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4246354 |
Process for bromination of resins based on crosslinked vinylaromatic copolymers
This invention relates to a process for the preparation of high density resins by bromination of particles of crosslinked vinylaromatic copolymers of either the gel type or the ionic or non-ionic...
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4239848 |
Photocrosslinkable carbonyl-containing polymeric composition and element with cobalt complex
There is disclosed a composition, element, and process of imaging, wherein a polymeric binder is rendered photocrosslinkable by virtue of a photoresponsive source of amines, and by virtue of one or...
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4226958 |
Process for preparing organo-arsenic derivatives of polystyrene and related polymers
A process is described for the preparation of a polymer having a recurring unit of the formula: ##STR1## where R is hydrogen or methyl, C n H 2n is lower-alkylene, R 1 and R 2 are aryl or...
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4223111 |
Process for preparing arylarsine substituted polystyrene
A process is described for the preparation of a polymer having a recurring unit of the formula: ##STR1## where R is hydrogen or methyl, C n H 2n is lower-alkylene, R 1 and R 2 are aryl and x is...
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4200703 |
Process for the manufacture of heat-stable, nuclear-brominated polystyrenes
In a process for the manufacture of a heat-stable, nuclear-brominated polystyrene by brominating, at -20° C. to +40° C., a polystyrene dissolved in a chlorinated hydrocarbon in the presence of a...
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4165431 |
Chlorination of polyolefins in the presence of complex formers
A chlorinated colorless polyolefin, preferably a chlorinated colorless isotactic polypropylene, soluble in carbon tetrachloride and having a chlorine content of from 60% to 70% by weight and an...
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4143221 |
Manufacture of brominated polymerization products of styrene
Styrene polymers or copolymers containing bromine are manufactured by cationic polymerization of the monomer, or of the monomer plus a copolymerizable monomer of the isobutylene or...
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4142032 |
Process for improving barrier properties of polymers
A process is provided for achieving significant improvements in the barrier properties of polymeric articles, such as films and containers, by surface treatment with both fluorine and bromine. The...
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4125692 |
Process for producing a macromolecular compound having a functional group at each end of the molecule
Di or polyfunctional macromolecular compounds having a terminal functional group at each end of the molecule are produced by selectively cleaving the carbon-carbon double bonds of an unsaturated...
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4074032 |
Manufacture of heat-stable brominated oligomers of monovinyl-aromatic compounds
A process for the manufacture of heat-stable, brominated oligostyrenes by brominating selectively hydrogenated oligostyrenes in halogenated solvents in the presence of Lewis acids at from -25° to...
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RE29350 |
Process for chlorinating ethylene polymers
A process for chlorinating solid, finely-divided ethylene polymers is disclosed, wherein the resulting chloropolyethylene has a statistical or hybridical distribution of chlorine in the polymer....
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4021484 |
Novel cationic amino resins and processes for producing the same
Novel cationic amino resins having a weight average molecular weight of at least 400 and an amine value of 20 to 700 and processes for producing the same characterized (a) by subjecting to thermal...
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4017469 |
Photodegradable polyolefin compositions
Photodegradable polyolefin compositions are described which comprise from 5 to 500 ppm of iron in the form of an alkali metal, preferably potassium, trioxalatoferrate and from 5 × 10 - 5 to 5 ×...
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4013609 |
Resinous composition
A resinous composition containing as an essential ingredient a binder comprising a product obtained by I. reacting in a first stage a solution of 1. a copolymer containing anhydride groups with ...
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3978161 |
Metalation of polymers
Hydrocarbon polymers are readily metalated in solution in a hydrocarbon solvent with metallic sodium, potassium, rubidium and/or cesium utilizing a chelating polytertiary amine or a crown polyether.
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3976624 |
Method for improving adhesion of metallic material with vulcanizable rubber composition
This invention relates to an improvement of the adhesion of a metallic material such as copper, copper alloys and other metals coated therewith with a vulcanizable rubber composition. It is...
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3959539 |
Coating material of polymers and salts of fatty acids
Powder coating materials which consist essentially of an ionic copolymer, or a copolymer or terpolymer base resin of the ionic copolymer, and 1 to 20% by weight, based on the weight of copolymer,...
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3953407 |
Process for preparing paper size resin
A process for preparing a resin suitable for preparation of sizes, which comprises polymerizing a cracked oil fraction which is obtained by the thermal cracking of petroleums, has a boiling point...
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3933774 |
Modified polymers of diisopropenylbenzene
Modified copolymers of vinyl aromatic compounds or diene hydrocarbons with diisopropenylbenzene. They contain at least 0.2% of polymerized units of a group of the general formula The copolymers are...
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3917742 |
Hydroxylated and chlorinated block copolymer blends
Novel compositions are provided comprising chlorohydrinated block copolymers. Solutions of the chlorohydrinated block polymers have utility as primers and in modifying conventional polyurethane and...
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3909486 |
Method of halogenating thermoplastic polyolefins
A method of halogenating thermoplastic polyolefin materials, comprising mixing a thermoplastic polyolefin in particulate form with particulate filler type material in an atmosphere comprising...
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3898326 |
Polyvinylpyrrolidone-iodide compositions and polyvinylpyrrolidone-iodide-iodine complexes prepared therefrom
A unique PVP-iodide solid solution is prepared by drying a solution of PVP and iodide wherein the PVP:I - ratio is preferably in the range of about 2:1 to 6:1, which dried product may then be...
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3888833 |
Method for binding antithrombotic or anticlotting substances to a susceptible material involving the use of an aromatic sulfonyl nitrene
A method for binding antithrombotic or anticlotting substances to a susceptible material involving the irradiation of a nitrated aromatic sulfonyl azide contacted with the material, followed by...
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3887533 |
Process for the manufacture of a light colored thermostable chlorinated polyolefin
Light colored and thermostable chloropolyolefins are obtained by chlorinating a polyethylene or a polypropylene or a copolymer of ethylene with an α-olefin having 3 to 6 carbon atoms in a...
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3884991 |
Graft-polymer of vinyl chloride and producing process thereof
The present invention provides a novel grafted polymer of vinyl chloride onto pre-chlorinated ethylene-vinyl acetate copolymer and/or pre-chlorinated ethylene-acrylic ester copolymer without...
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3856891 |
INHERENTLY FLEXIBLE, HIGH STRENGTH SHEETING FROM BLENDS OF A SUSPENSION CHLORINATED OLEFIN POLYMER AND POST-CHLORINATED POLYVINYL CHLORIDE
This invention relates to sheeting materials characterized by having high tensile strength and unexpectedly low stiffness which sheeting is prepared from blends consisting essentially of major...
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3843752 |
BLOCK COPOLYMERS HAVING A POLYHYDROCARGON-POLYESTER MAIN CHAIN
This invention provides block copolymers containing ester linkages and polymerized units of ethylenically unsaturated monomers and a process for their preparation. The process is characterized by...
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3505190 |
ETHYLENE:HIGHER-ALPHA-OLEFIN COPOLYMERS COMPATIBLE IN CURE WITH UNSATURATED POLYMERS
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3474159 |
SYNTHETIC RUBBER COMPOSITIONS CONTAINING OXIDIZED POLYMER TACKIFIERS
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3459715 |
ALKYL GLYCIDYL MIXED ESTERS AND AMINE REACTION PRODUCTS THEREOF
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3454544 |
PROCESS FOR THE CHLORINATION OF POLYOLEFINS
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3450797 |
PROCESS FOR OBTAINING A CONTROLLED INCREASE IN THE MOLECULAR WEIGHT OF UNSATURATED POLYMERIC HYDROCARBONS
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3429865 |
CHLORINATED POLYETHYLENE COMPOSITIONS
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3405111 |
Halogenation of organic compounds in halogenated acetonitrile solvents
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3383377 |
Processability of conjugated diene polymers containing carbon-metal bonds by treatment with acidic materials
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3380983 |
Fluorocarbon derivative of polystyrene and process of preparing same
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3297675 |
Halogenated polyethylene
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3262899 |
Sizing polyolefin yarns with aqueous atactic polypropylene emulsion
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3240762 |
Maleic anhydride hydrogenated polycyclopentadiene reaction products
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3208963 |
Novel terpolymers
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3192188 |
Varnish resins consisting of chlorinated polypropylene or chlorinated copolymers of ethylene and propylene and process for their manufacture
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3180856 |
Halogenation of olefin polymers
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3099644 |
Continuous chlorination and bromination of butyl rubber
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3092612 |
Copolymers preparation process
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3062795 |
Process for preparing halogenated copolymers
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3039977 |
Method of producing self-extinguishing foamable polystyrene by brominating foamable polystyrene in aqueous suspension
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3028300 |
Germicidal compositions and methods for preparing the same
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2996485 |
Chlorination of coumarone-indene resins
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2981720 |
Chlorination and sulfochlorination of low-pressure polyethylene
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2980656 |
Method for production of soluble chlorinated polymers
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