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4101513 |
Catalyst for condensation of hydrolyzable silanes and storage stable compositions thereof
Onium catalysts of Group Va, VIa, and VIIa atoms have been found to be radiation activatable catalysts for the hydrolysis of silanes. Anhydrous compositions comprising silanes and the catalyst are...
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4100339 |
Process for preparing acrylonitrile/vinyl chloride copolymers having an increased viscosity which comprises using anionic/non-ionic emulsifier blends
The invention relates to a process for the production of chemically uniform copolymers of acrylonitrile and vinyl chloride and, optionally, other copolymerizable ethylenically unsaturated...
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4100141 |
Stabilized adhesive and curing compositions
Stabilized, curable compositions formed from known free radical-polymerizable monomers (e.g., acrylates, stryene, etc.), and free radical initiators (e.g., peroxides, hydroperoxides,...
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4095017 |
Vinyl monomer polymerization or copolymerization catalyzed by organoaluminum-organophosphine-metal salt of a beta-diketone catalyst system
A catalyst system comprising (I) an organoaluminum compound, (II) an organophosphine compound, and (III) a metal salt of a beta-diketone, is effective to homopolymerize an alkene oxide,...
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4091197 |
Process for polymerization of vinyl chloride micro-suspension with metal compounds
Micro-suspension polymerization of vinyl chloride monomers and comonomers with a seed in the form of a previously prepared dispersion of the polymer or copolymer containing all of the...
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4082818 |
Mercaptan activation by acid in the copolymerization of acrylonitrile
Molecular weight control is achieved in the production of acrylonitrile copolymers by means of an acid-activated mercaptan chain transfer agent.
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4081592 |
Process of polymerizing acrylonitrile copolymers employing terpinolene or gamma terpinene as a chain modifier
Acrylonitrile copolymers having controlled molecular weight are prepared using terpinolene or gamma terpinene as chain length modifier.
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4077947 |
Terpolymers comprising olefinic nitriles, N-vinylimides and indene or coumarone and process for preparing the compositions
Polymer resins which are thermoplastic and high softening with good impermeability to gases are composed of an olefinically unsaturated nitrile, such as acrylonitrile, an N-vinyl imide, such as...
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4072810 |
Coupled peroxides
A new class of compounds: R-W-R' where R and R' are identical oxy radicals containing peroxide functions such as dialkyl or diaralkyl peroxide, peroxyketal, peroxyester, or monoperoxycarbonate, and...
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4071675 |
Emulsion polymerization of vinyl chloride using mixed emulsifier system in a single step in the absence of seed formation
A one-step process for the emulsion polymerization of vinyl chloride using a water-soluble initiator and an aqueous emulsifier system of (1) a C 12 -C 18 straight chain alkyl or alkenyl phosphate...
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4065430 |
Functional group containing polymer and method of preparing the same
A functional group containing polymer, particularly useful for producing relief images, printing plates, and photographic duplications, containing 1 to 90 mol percent of the monomer unit...
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4061856 |
Trimerization of aromatic nitriles
Triazine compounds and cross-linked polymer compositions are made by heating aromatic nitriles to a temperature in the range of from about 100°0 C. to about 700° C., and preferably in the range...
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4055714 |
Azo free radical initiators containing ultraviolet light stabilizing groups
Compounds which contain azo or peroxide linkages as well as the radical of an ultraviolet light stabilizing group are described. These compounds function as polymerization initiators which cause an...
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4043947 |
Impact improvement of rubber-modified nitrile resins
The impact resistance of rubber-modified high-nitrile thermoplastic resins is greatly improved by including certain oils such as triethyl phosphate, 2-ethyl hexanoic acid, 2,4-di-t-butyl phenol,...
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4035340 |
Acrolein-indene copolymers
Thermoplastic-thermosetting polymers having good thermal stability are produced by the copolymerization of acrolein and indene.
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4031299 |
Process for forming a polyvinyl chloride extender resin by incorporating in the suspension polymerization medium a prehomogenized solution of a polyallyl compound and a low molecular polymer of propylene
A polyvinyl chloride extender resin having an average particle size of between about 5 microns and about 50 microns can be formed by using conventional suspension polymerization procedures if a...
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4014843 |
Latex compositions
High solids latex suitable for no-gel foam applications is prepared by polymerizing an aliphatic conjugated diolefin, optionally with at least one copolymerizable monomer e.g. styrene,...
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4001482 |
Preparation of vinyl halide-containing polymers
An improvement in the method of preparing vinyl halide-containing polymers by suspension polymerization is disclosed. Briefly, the improvement comprises "tail-peaking" the reaction mass prior to...
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3985718 |
Polymerization of olefinic monomers using a four component initiator
Four component polymerization initiators for olefinic monomers comprise (1) an oxidizing agent such as hydrogen peroxide, a persulphate, a permanganate, a chlorate, a perchlorate, a bichromate, a...
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3976690 |
Process for preparing alkane bis-dihalophosphines
Alkane bis-dihalophosphines are prepared by reacting an olefin with a trivalent phosphorus compound having three halogens attached thereto, such as phosphorus trichloride, in the presence of...
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3975328 |
Method for manufacture of polymer having different stereospecific structures at desired ratio from vinyl monomers
Disclosed is a method whereby a vinyl compound such as an α, β-carbonyl compound, acrylonitrile or methacrylonitrile is polymerized in a non-protonic organic medium in the presence of an alkali...
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3972866 |
Polymerization process
An olefine polymerization catalyst includes a complex compound of phosphorus having the general formula ##EQU1## where the various groups are defined. Typical phosphorus compounds include ##EQU2##...
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3966573 |
Photopolymerization co-initiator systems
A photopolymerization co-initiator system comprises (a) about 1-30 parts of at least one carbonyl-containing compound, (b) about 1-30 parts of an organic compound containing nitrogen, phoshorus,...
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3966697 |
Production of high-vinyl group, high-molecular weight unsaturated hydrocarbon polymers
High molecular weight polybutadiene, polyisoprene and other hydrocarbon polymers having a high vinyl and a low 1,4-trans-double bond content, which are useful in the manufacture of tire treads and...
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3965080 |
Polymerization of monomers with alkaline earth metal organometallic compounds
Organometallic compounds of high carbanion yield are prepared by metallation with barium, strontium or calcium or mixture of the same of certain acidic organic compounds having a pKa value of...
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3963673 |
Polymer crosslinking with coupled peroxides
A new class of compounds: R-W-R' where R and R' are identical oxy radicals containing peroxide functions such as dialkyl or diaralkyl peroxide, proxyketal, peroxyester, or monoperoxycarbonate, and...
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3963688 |
Method of emulsion polymerization using phosphate esters of normal alkanols as surfactant
The mono- or diester of phosphoric acid and a straight chain alkanol of 8 to 10 carbon atoms is used as a surfactant in the emulsion polymerization of olefinic compounds, especially vinyl...
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3962201 |
Process for polymerizing acrylics employing (hydrocarbon-peroxy hydrocarbon) phosphonates
(Hydrocarbon-peroxy hydrocarbon) phosphonates, useful as polymerization initiators, prepared by the reaction of a hydroperoxide with a phosphonate of an unsaturated hydrocarbon may be used to...
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3962169 |
Fluoroelastomer latex containing lithium ion and a creaming agent and process for preparation thereof
A fluoroelastomer latex which remains useful after being stored for a long period of time and which can be produced by a process employing a relatively brief residence time in the reactor can be...
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3959100 |
Photopolymerizable coating compositions containing activated halogenated azine photoinitiator and process for making same
Ultraviolet polymerization of photopolymerizable binders or vehicles is improved by incorporating thereinto a sensitizer composition comprising an activated halogenated azine compound.
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3925317 |
Alkene oxide or acrylate polymerization or copolymerization catalyzed by organoaluminum-organophosphine-metal salt of a beta-diketone
A catalyst system comprising (I) an organoaluminum compound (II) an organophosphine compound, and (III) a metal salt of a beta-diketone, is effective to homopolymerize an alkene oxide,...
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3898302 |
Process for producing block copolymer
A self-curing block copolymer, which has improved elastomeric properties without being subjected to any special chemical or physical treatment, is obtained by a single-stage process which comprises...
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3887651 |
Process for preparing copolymer
A copolymer which is useful for the fabrication of packaging materials is prepared by copolymerizing a mixture of an olefinic unsaturated nitrile, an alkylvinyl ether and an N-substituted...
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3882203 |
HYDROCARBON-PEROXY HYDROCARBON PHOSPHONATES
(Hydrocarbon-peroxy hydrocarbon) phosphonates, useful as polymerization initiators, may be prepared by the reaction of a hydroperoxide with a phosphonate of an unsaturated hydrocarbon.
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3880779 |
Polymerization process of vicinal alkylene oxides and polymerization catalyst therefor
An improved process for polymerizing vicinal alkylene oxides in the presence of a catalyst comprising the reaction product of an aluminum or tin compound of the formula (i) R n AlX 3 -n , (ii) R'...
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3868359 |
Symmetrical trisazo sequential free radical initiators having two different azo functions
Polyazo compounds having at least one azo function different from the other azo function(s). Examples: 4-Ethoxycarbonylazo-4-cyanopentyl 4-t-butylazo-4-cyanovalerate;...
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3867318 |
Photosensitive polymeric esters produced by the condensation of a chloromethyl groups-containing polymer with a carboxyl salt
Production of a polymeric ester having photosensitive properties and the following group in the side chain of its repeating unit ##SPC1## Wherein R is an aliphatic chain, R 1 is hydrogen or a...
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3860568 |
NOVEL POLYMERIZATION INITIATOR AND PROCESS FOR POLYMERIZATION USING THE SAME
A process for the polymerization of an olefinic monomer by contacting the monomer with a polymerization initiator having an oxidizing agent, a chelating compound of the metal, in which the metal is...
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3767547 |
PHOTOPOLYMERIZATION USING TRIORGANO-SUBSTITUTED PHOSPHINE AND SULFONYL HALIDES AS A PHOTOINITIATOR
An improved process for polymerizing a vinyl monomer in the presence of a photoinitiator by irradiating the vinyl monomer with a beam of wave energy is set forth. The improvement comprises using an...
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3755278 |
PROCESS FOR THE POLYMERIZATION OF ETHYLENICALLY UNSATURATED MONOMERS
A process is disclosed for the polymerization in bulk or in solution of one or more ethylenically unsaturated monomers wherein the polymerization is conducted in the presence of a catalytic system...
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3717613 |
PROCESS FOR PREPARING COPOLYMERS
A catalyst comprising an organoaluminum compound, an organic halogen compound containing labile halogen atom, and a compound of metal of Groups IV B-VII B or Group VIII of Deming's Periodic table...
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3697496 |
METHOD FOR THE POLYMERIZATION OF A COMPOUND CONTAINING AN OXIRANE GROUP
Polyalkylene oxides are produced advantageously by contacting an alkylene oxide monomer with a novel and excellent catalyst obtained by reacting (i) aluminum alkoxide, (ii) phosphoric acid or an...
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3534122 |
FREE RADICAL POLYMERIZATION OF BULK LIQUID ACRYLIC MONOMER WITH MONOTERTIARY BUTYL PEROXY MALEIC ACID AND TERTIARY PHOSPHINE COAGENT AT ROOM TEMPERATURE
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3525721 |
COPOLYMERS OF ALKOXY ALKYL ACRYLATES,ALKYL ACRYLATES AND GLYCIDYL ACRYLATE
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3520742 |
ENCAPSULATION OF PARTICULATE NITRONIUM OXIDIZER SALTS WITH POLYMERIZATION OF ETHYLENICALLY UNSATURATED MONOMERS
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3493551 |
METHOD OF SUSPENSION POLYMERIZING VINYL MONOMERS
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3485811 |
PROCESS AND CATALYST THEREFOR
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3485809 |
ACRYLIC RESINS
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3484395 |
PAPER COATING LATEX PREPARED IN THE PRESENCE OF AN ALKYL PHENYL POLYPHOSPHATE ESTER SALT SURFACTANT
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3463764 |
PROCESS FOR PREPARING COPOLYMERS
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