141 |
Curable resin composition |
US260982 |
1981-05-06 |
US4403073A |
1983-09-06 |
Nobuyuki Ikeguchi |
A curable resin composition comprising a mixture and/or a preliminary reaction product of (a) at least one cyanate compound selected from the group consisting of polyfunctional cyanate esters, prepolymers of said cyanate esters, coprepolymers of said cyanate ester and an amine and mixtures thereof, (b) at least one polymeric material selected from the group consisting of polybutadiene having molecular weight of 500-1,000,000, reaction products of the polybutadiene and a compound selected from the group consisting of isocyanate compounds, acrylates, methacrylates and unsaturated acid anhydrides and the polybutadiene modified by introducing methacryloyl group, acryloyl group or acid anhydride moiety thereinto and optionally (c) at least one compound selected from the group consisting of polyfunctional maleimides, prepolymers of the maleimides or coprepolymers of the maleimides and an amine is disclosed. |
142 |
Process for preparation of resin composition useful for laminated sheet |
US47700 |
1979-06-12 |
US4259395A |
1981-03-31 |
Seimei Yasui; Yoshinobu Matsuda; Masakazu Sagou; Takanobu Noguchi |
Process for the preparation of a resin composition which comprises reacting a polybutadiene having a number average molecular weight of 150 to 10,000 and 1,4-structure of at least 80% by weight with a phenol in the presence of an acid catalyst to obtain a composition which consists of a polybutadiene-phenol adduct and unreacted phenol, in said polybutadiene-phenol adduct, one molecule of phenol per 3 to 8 butadiene units being added to the polybutadiene, and reacting the polybutadiene-phenol adduct composition with a formaldehyde in the presence of a basic catalyst. Said resin composition thus prepared is useful for the preparation of a laminated sheet having excellent curing characteristics, particularly excellent electrical characteristics, punchability and flexibility. |
143 |
Modified rubber, its use as hydrocarbon absorber |
US836252 |
1977-09-23 |
US4182677A |
1980-01-08 |
Christian Bocard; Philippe Renault; Henri Seris; Claude Gatellier |
Process for absorbing hydrocarbons or organic solvents, particularly in solution or suspension in water at a low concentration, by means of an absorption mass consisting of rubber particles of from 0.1 to 3 mm, subjected to a treatment with an organic or inorganic acid or an aqueous solution or emulsion thereof. |
144 |
Star-shaped polymer reacted with dicarboxylic acid and amine as
dispersant viscosity index improver |
US795675 |
1977-05-11 |
US4141847A |
1979-02-27 |
Thomas E. Kiovsky |
Lubricating oil additives having both dispersant and viscosity index-improving properties are prepared by reacting a selectively hydrogenated star-shaped polymer having at least four arms of polymers or copolymers of dienes and monoalkenyl arenes with an alpha-beta unsaturated carboxylic acid or derivative, and then reacting the resulting intermediate with an amine. |
145 |
Star-shaped dispersant viscosity index improver |
US795676 |
1977-05-11 |
US4077893A |
1978-03-07 |
Thomas E. Kiovsky |
Lubricating oil additives having both dispersant and viscosity index-improving properties are prepared by reacting a selectively hydrogenated star-shaped polymer having at least four arms of polymers or copolymers of dienes and monoalkenyl arenes with an alpha-beta unsaturated carboxylic acid or derivative, and then reacting the resulting intermediate with an alkane polyol. |
146 |
Treatment of coupled polymers prior to hydrogenation |
US694121 |
1976-06-08 |
US4076914A |
1978-02-28 |
George A. Moczygemba; Henry L. Hsieh |
An organopolyhalide-coupled conjugated diene polymer is treated with an organometal compound after the coupling step and prior to hydrogenation. The treated polymer is hydrogenated to result in hydrogenated polymers exhibiting low residual unsaturation. |
147 |
Removal of sulfuric acid compounds |
US613882 |
1975-09-16 |
US4025479A |
1977-05-24 |
Albert Jung; Johannes Reese; Kurt Hultzsch; Wolfgang Hesse |
Sulfuric acid compounds are removed from reaction mixtures by a reaction with polybutadiene alone or combined with unsaturated terpene compounds at elevated temperatures whereby products of reduction are formed which are volatilizable at the temperature of reaction and by expelling said products of reduction from the reaction mixture. Thus a product being substantially free from a sulfur content is obtained. |
148 |
Method for modifying the properties of rubbery polymers of conjugated
dienes |
US557157 |
1975-03-10 |
US4012566A |
1977-03-15 |
Robert P. Zelinski; Rudolph H. Gath |
The physical properties of rubbery polymers of conjugated dienes are modified by treatment with a homogeneous olefin disproportionation catalyst thereby modifying at least one of the properties of cold flow, inherent viscosity or Mooney viscosity. |
149 |
Increasing the molecular weight of liquid linear butadiene dead polymers
employing p-toluene sulfonic acid as acid catalyst |
US532555 |
1974-12-13 |
US3954885A |
1976-05-04 |
Donald Norman Schulz; John Norton Anderson |
The molecular weight of a liquid, linear dead polymer terminated with an alpha-alkoxyalkyl ether group, is increased by heating with an acid catalyst in the absence of a solvent. |
150 |
Chemically joined, phase separated self-cured hydrophilic thermoplastic graft copolymers and their preparation |
US43278874 |
1974-01-11 |
US3928255A |
1975-12-23 |
MILKOVICH RALPH; CHIANG MUTONG T |
Disclosed are chemically joined, phase separated self-cured hydrophilic thermoplastic graft copolymers which are copolymers of at least one hydrophilic (water-soluble) ethylenically unsaturated monomer or mixtures thereof (or compounds rendered hydrophilic) and at least one copolymerizable hydrophobic macromolecular monomer having a copolymerizable end group which is copolymerizable with said hydrophilic monomer based on the relative reactivity ratios of the respective copolymerizable moieties, said copolymerizable hydrophobic macromolecular monomer being characterized as having a substantially uniform molecular weight distribution such that its ratio of Mw/Mn is not substantially above about 1.1, and being further characterized as having a molecular weight of at least about 2,000. The copolymers are water-dispersible and water-swellable and are useful in diverse applications such as suspension stabilizers, flocculants, hydrogels (e.g., biomedical hydrogels as contact lenses, artificial organs, etc.), industrial thickeners, ion exchange resins, drilling mud, and they can impart moisture absorption and water permeability (useful in dialysis tubing) as well as antistatic properties to products.
|
151 |
|
US33665273 |
1973-02-28 |
USB336652I5 |
1975-01-28 |
|
|
152 |
Paper sizing agent |
US27540672 |
1972-07-26 |
US3804788A |
1974-04-16 |
FUNAOKA K; MIWA T |
A SIZING AGENT FOR USE IN PAPER-MAKING IS PREPARED BY POLYMERIZING A C4 AND/OR A C5 FRACTION CONTAIING DIOLEFINS OR A MIXTURE OF A C4 AND/OR A C5 FRACTION CONTAINING DIOLEFINS WITH DICYCOLOPENTADIENE TO OBTAIN A PETROLEUM RESIN, REACTING 100 PARTS BY WEIGHT OF THE RESULTING PETROLEUM RESIN HAVING UNSATURATED BONDS AND A SOFTENING POINT OF NOT HIGHER THAN 40*C. WITH NOT LESS THAN 8 PERTS BY WEIGHT OF AN A,B-UNSATURATED DIBASIC ACID TO OBTAIN AN ADDITION PRODUCT, FURTHER REACTING THE RESULTING ADDITION PRODUCT WITH UREA OR AMMONIA TO FORM A PARTIALLY AMIDATED PETROLEUM RESIN, ADDING AT LEAST ONE OF ROSIN, TALL OIL AND MODIFIED PRODUCTS THEREOF, AND THEN SAPONIFIYING THE MIXTURE WITH AN ALKALINE SOLUTION.
|
153 |
Process for the defined increase of the molecular weight of solid,unsaturated elastomers |
US27293972 |
1972-07-05 |
US3803080A |
1974-04-09 |
NORDSIEK K |
The molecular weight of solid hydrocarbon elastomers, e.g., polybutadienes, is increased step-wise in a defined manner by subjecting them to thermal-mechanical treatment in which the elastomer is subjected to strong shearing forces at, e.g., 80*220* C., in the presence of a non-basic metallic compound as catalyst and a basic compound as cocatalyst.
|
154 |
Process for the production of aqueous dispersions of modified synthetic con-jugated diene polymers |
US3776872D |
1972-03-16 |
US3776872A |
1973-12-04 |
LA HEIJ G; VAN AMERONGEN G |
A PROCESS FOR THE PRODUCTION OF DISPERSIONS OF SYNTHETIC CONJUGATED DIENE SOLUTION POLYMERS CONTAINING TOLUENE INSOLUBLE GEL COMPRISES TREATMENT OF AN AQUEOUS POLYMER DISPERSION WITH A FREE RADICAL YIELDING SUBSTANCE AT A TEMPERATURE ABOVE 20*C. IN THE ABSENCE OF A COMPOUND THAT WOULD FORM A REDOX SYSTEM.
|
155 |
Control of molecular weight and molecular weight distributions of unsaturated polymers |
US3754046D |
1969-12-04 |
US3754046A |
1973-08-21 |
CALDERON N; SCOTT K |
A METHOD OF CONTROLLING THE MOLECULAR WEIGHT AND THE MOLECULAR WEIGHT POLYMERS TO A CATALYTIC OLEFIN METATHESIS SUBJECTING THE POLYMERS TO A CATALYTIC OLEFIN METTHATHESISS REACTION WHILE SAID POLYMERS ARE IN CONTACT WITH AN ACYCLIC UNSATURATD COMPOUNDS, SUCH AS AN OLEFIN.
|
156 |
Hydroxy halogenated elastomers resistant to oils |
US3714297D |
1970-03-24 |
US3714297A |
1973-01-30 |
BLAISE J; GRIMAUD E |
Novel hydroxyhalogenated elastomers are produced by first partially epoxidizing a high molecular diene elastomer in a solvent medium and then reacting the partially epoxidized product with a hydrohalogen acid in a solvent medium. Diene elastomers such as polymer and copolymers of butadiene, isoprene, dimethyl2,3-butadiene, chloroprene, cyanobutadienes and piperylene are first epoxidized and then reacted with hydrohalogenated acids such as hydrochloric, hydrobromic, hydriodic and mixtures thereof. The hydroxyhalogenated elastomers thus produced can be vulcanized by an extremely broad range of vulcanization agents and covulcanized with many other elastomers. The vulcanizates of these elastomers are characterized by such properties as very good resistance to aromatic and aliphatic solvents and oils, excellent stability at high or low temperatures and low moisture absorption.
|
157 |
Production of unsaturated polymeric hydrocarbons having high mooney viscosities |
US3704286D |
1969-12-29 |
US3704286A |
1972-11-28 |
SCHAFER JOHANNES; BERG GERHARD; BENEDIKTER KURT |
TO INCREASE THE MOLECULAR WEIGHT OF UNSATURATED POLYMERIC HYDROCARBONS, SUCH AS BUTAIENE, PRODUCED ON THE BASIS OF ZIEGLER-TYPE CATALYSTS, AFTER THE TERMINATION OF POLYMERIZATION OR THE DESIRED CONVERSION HAS BEEN REACHED, ADDING TO THE RESULTANT REACTION SOLUTION A COMPOUND OF THE FORMULA RX WHEREIN R IS A RESIDUE SELECTED FROM THE GROUP CONSISTING OF HALOGENO, ALKYL, CYCLOALKYL, ARYL, ARALKYL, ACYL THIONYL, SULFURYL, CHROMYL, VANADYL, PHOSPHORUS ORXY, THIOPHOSPHORUS, SULFONIC ACID, SULFINIC ACID ARSENIC OXY, ANTIMONY OXY, TITANYL, AND IMIDE, OR A COMPONENT SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS, ARSENIC, SULFUR, SELENIUM, SILICON, AND TIN, AND X REPRESENTS AT LEAST ONE HALOGEN ATOM.
|
158 |
Treatment of rubbery polymers with lewis acids |
US3637635D |
1964-01-27 |
US3637635A |
1972-01-25 |
BUCKLER ERNEST J; COULTHART HUGH K; MCCRACKEN NATHAN J; MARCINKOWSKI MIECZYSLAW |
1. A PROCESS OF MODIFYING A SUBSTANITALLY GEL-FREE RUBBERY POLYMER OF BUTADIENE PREPARED IN THE PRESENCE OF A ZIEGLER CATALYST AND HAVING AT LEAST 75% OF THE BUTADIENE UNITS IN THE CIS-1,4 CONFIGURATION WHCIH COMPRISES TREATING SAID POLYMER OF BUTADIENE HAVING A MOONEY VISCOSITY OF ABOUT 10 TO 70, WHILE DISPERSED IN AN INERT ORGANIC LIQUID, WITH BETWEEN 0.3 AND 5% BY WEIGHT OF THE BUTADIENE POLYMER OF A LEWIS ACID SELECTED FROM THE GROUP CONSISTING OF HYDROGEN CHLORIDE, ALUMINUM TRICHLORIDE, TITANIUM TETRACHLORIDE AND PRODUCT OF INCOMPLETE STOPPING OF A POLYMERIZATION CATALYST COMPRISING A COBALT SALT AND AN ORGANO-ALUMINUM CHLORIDE, WITH LESS THAN EQUIMOLAR AMOUNT OF A CATALYST STOPPER, TO PRODUCE A SUBSTANTIALLY GEL-FREE MODIFIED POLYMER OF BUTADIENE HAVING A MOONEY VISCOSITY WHICH IS AT LEAST MOONEY POINTS HIGHER THAN THAT OF THE UNMODIFIED POLYMER.
|
159 |
Method of improving the tack of ethylene-propylene polymers by radiation |
US3616362D |
1968-04-02 |
US3616362A |
1971-10-26 |
SOLDATOS ANTHONY C |
This invention relates to a method of improving the tack of ethylene-propylene polymers in a relatively short period of time by adding thereto a polymeric phenolic tackifier and exposing the resultant compositions to ionizing radiation or nonionizing radiation.
|
160 |
Process of joining lithiated polymers or copolymers |
US3607846D |
1969-01-21 |
US3607846A |
1971-09-21 |
HALASA ADEL F; TATE DAVID P |
Polymers of increased molecular weight are produced from plastic and/or rubbery polymers derived from vinylidene monomers by reaction with an organic halogen compound in the presence of an alkali metal hydrocarbon and also in the presence of an accelerator which is a Lewis base. The reactant polymers include polystyrene and similar plastic polymers and rubbery polymers such as polybutadiene and butadiene-styrene copolymers. The organic halogen compound is any carbon compound containing at least one reactive halogen atom per molecule. The halogen is fluorine, chlorine, bromine and/or iodine. The alkali metal hydrocarbon is preferably a ''''live'''' polymer containing reactive alkali metal, e.g., polybutadiene produced by polymerization of butadiene-1,3 by means of a lithium initiator. The Lewis base may be organic or inorganic, but it is preferred to use organic compounds and especially ethers. Preferred products are nonflow rubbery polymers.
|