| Patent Number |
Title Of Patent |
Date Issued |
| 5179156 |
Rubber composition |
January 12, 1993 |
| Herein is disclosed a vulcanizable rubber composition comprising a copolymer rubber constituted of ethylene, propylene and nonconjugated polyene, wherein ethylene/propylene molar ratio is 78/22 to 97/3 and the total content of propylene and nonconjugated polyene is 6 to 30% by mole i |
| 5118773 |
Rubber composition |
June 2, 1992 |
| Herein is disclosed a vulcanizable rubber composition comprising a copolymer rubber constituted of ethylene, propylene and nonconjugated polyene, wherein ethylene/propylene molar ratio is 78/22 to 97/3 and the total content of propylene and nonconjugated polyene is 6 to 30% by mole i |
| 5037891 |
Modified ethylene-.alpha.-olefin copolymer rubber and a process for producing the same |
August 6, 1991 |
| A modified copolymer rubber obtained by kneading at 200.degree.-280.degree. C.(A) at least one copolymer rubber material selected from the group consisting of an ethylene-.alpha.-olefin copolymer rubber having a number-average molecular weight of 10,000-100,000 and an ethylene content |
| 5015692 |
Process for preparing modified diene polymer rubbers |
May 14, 1991 |
| A process for preparing modified diene polymer rubbers having an increased impact resilience and a reduced hardness at low temperatures and useful as rubber materials for automobile tires and other industries which comprises producing an alkali metal-containing conjugated diene polymer, |
| 4987199 |
Ethylene-acrylic acid ester copolymer and process for producing the same |
January 22, 1991 |
| The present invention provides an ethylene-acrylic acid ester copolymer giving low deformation during vulcanization and having a high dimensional accuracy and excellent properties, as well as a process for producing said copolymer. |
| 4957976 |
Process for preparing diene polymer rubbers |
September 18, 1990 |
| A process for preparing modified diene polymer rubbers having an increased impact resilience and a reduced hardness at low temperatures and useful as rubber materials for automobile tires and other industries which comprises producing an alkali metal-containing conjugated diene polymer, |
| 4942223 |
Process for separating a polymer from a solution containing the same |
July 17, 1990 |
| In order to recover a polymer, such as styrene butadiene copolymer rubber, from a solution obtained by a solution polymerization of the corresponding comonomers, without degradation or deterioration of the polymer, the solution, ordinarily in 3 to 30% by weight concentration, is separate |
| 4918142 |
Rubber composition of tire tread containing block copolymer coupled with dicarboxylic acid ester |
April 17, 1990 |
| A rubber composition suitable for tire treads having well-balanced excellent steering stability in cornering, wet skid characteristic, ice skid characteristic and rolling characteristic, and an excellent processability, which comprises a rubber component containing a block copolymer |
| 4889881 |
Ethylene-.alpha.-olefin vulcanized rubber composition |
December 26, 1989 |
| An ethylene-.alpha.-olefin vulcanized rubber composition with excellent weather resistance and high transparency which is formed by vulcanizing with an organic peroxide an unvulcanized rubber composition comprising an ethylene-.alpha.-olefin rubber containing no metal oxide nor metal |
| 4885338 |
Modified diene polymer rubbers |
December 5, 1989 |
| A process for preparing modified diene polymer rubbers having an increased impact resilience and a reduced hardness at low temperatures and useful as rubber materials for automobile tires and other industries which comprises producing an alkali metal-containing conjugated diene polymer, |
| 4820774 |
Elastomer composition |
April 11, 1989 |
| A vulcanizable elastomer composition comprising an .alpha.-olefin copolymer comprising ethylene and an .alpha.-olefin(s) and an ethylene copolymer comprising ethylene and at least one member selected from the group consisting of acrylic and methacrylic esters, which has an excellent |
| 4812527 |
Rubber composition for tire treads containing dicarboxylic acid diester coupled block polymers |
March 14, 1989 |
| A rubber composition suitable for tire treads having well-balanced excellent wet skid characteristic, ice skid characteristic and rolling characteristic, and an excellent processability, which comprises a rubber component containing at least 20% by weight of a block copolymer consist |
| 4647614 |
Diene elastomer compositions |
March 3, 1987 |
| Disclosed is a diene elastomer composition especially suitable as tread rubber of tires which has low rolling resistance and high wet grip in combination. This elastomer composition contains a rubber material comprising an elastomeric polymer component of a butadiene polymer and/or a |
| 4537936 |
Diene rubber composition, method of preparing the same and tire employing said composition |
August 27, 1985 |
| A diene rubber composition comprising 25 to 90 parts by weight of at least one high molecular weight diene rubber (A) having an intrinsic viscosity [.eta.] of at least 2.0 and a glass transition point of not lower than -50.degree. C. and 75 to 10 parts by weight of at least one low molec |
| 4436873 |
Conjugated diene block polymer and process for preparing the same |
March 13, 1984 |
| A conjugated diene block polymer composed of blocks having a different microstructure from each other such that one block contains 20 to 60% by mole of 1,2- and/or 3,4-bonding, the other block contains 50 to 90% by mole of 1,2- and/or 3,4-bonding, the difference in the 1,2- and/or 3, |
| 4407989 |
Process for the separation treatment of polymer from polymer solution |
October 4, 1983 |
| A process for the separation treatment of a polymer solution characterized by, in separating and recovering polymer and polymerization solvent by flashing a polymer solution, heating said polymer solution under an elevated pressure sufficient to maintain said solution in a liquid phase, |
