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Inventor:
Ueda; Akio
Address:
Yokohama, JP
No. of patents:
11
Patents:












Patent Number Title Of Patent Date Issued
4950719 Rubber composition August 21, 1990
A rubber composition which gives a rubber vibration insulator having excellent low-temperature properties comprises as a main rubber component a blend composed of (a) 10 to 90 parts by weight of a tapered styrene/butadiene copolymer rubber which has an average bound styrene content o
4831094 Articles having shape recovering properties and a method for using it May 16, 1989
Articles having shape recovering properties and methods of using them are disclosed. An article is formed from a composition containing a norbornene polymer by forming said polymer into an article having a first shape, then deforming the article in the solid state to a second shape and c
4647625 Process for modifying conjugated diene polymers March 3, 1987
A process for modifying a polymer of a conjugated diene, which comprises reacting a polymer of a conjugated diene containing at least one metal selected from alkali metals and alkaline earth metals with a compound having a linkage of the following formula ##STR1## wherein X repre
4555548 Rubber composition for tire treads November 26, 1985
A rubber composition for tire treads, comprising [I] 10 to 90% by weight of a styrene-butadiene copolymer rubber containing not more than 40% by weight of bound styrene and having bonded to a carbon atom of the rubber molecular chain at least 0.1 mole, per mole of the rubber molecular ch
4555547 Rubber composition for tire treads November 26, 1985
A rubber composition for tire treads, comprising [I] 10 to 70% by weight of a polybutadiene rubber having bonded to a carbon atom of the rubber molecular chain at least 0.1 mole, per mole of the rubber molecular chain, of an atomic grouping represented by the following formula ##STR1
4427831 Rubber materials having excellent grip on ice January 24, 1984
A rubber material having an excellent grip on ice comprising a mixture of an ordinary rubber and a powdered polymer, said powdered polymer having a maximum of tan .delta. at a temperature in the range of -5.degree. C. to +35.degree. C. when the tan .delta. is measured by a nonresonance,
4414363 Rubber composition November 8, 1983
A rubber composition comprising as main components (1) at least one rubber having a glass transition temperature of from -45.degree. C. to 0.degree. C. and selected from the group consisting of an isoprene-butadiene copolymer rubber and polyisoprene rubber and (2) at least one rubber
4321168 Process for preparing rubber composition for tire treads March 23, 1982
A process for preparing a tire tread rubber composition having improved rolling resistance and wet skid resistance comprising [I] 100 parts by weight of a rubber material composed of 25 to 75% by weight of substantially amorphous polybutadiene having a 1,2-bond unit content of 65 to
4224197 Rubber composition for tire tread September 23, 1980
A rubber composition for the tread of tire having reduced rolling resistance and increased wet skid resistance with the mechanical properties unimpaired, said rubber composition comprising 20 to 80% by weight of (I) essentially amorphous polybutadiene having a 1,2-bond units content
4166083 Rubber composition and process for preparation thereof August 28, 1979
A blended rubber composition comprising(a) 70 to 95% by weight of at least one diene rubber, and(b) 30 to 5% by weight of a polymer or copolymer obtained by polymerizing at least one norbornene compound expressed by the general formula ##STR1## wherein R and R', independently from each o
4111867 Rubber composition for tire treads September 5, 1978
A rubber composition for tire treads includes (Ia) an oil-extended rubber having a Mooney viscosity (ML.sub.1+4, 100.degree. C) of 20 to 70 which is prepared by adding 20 to 80 parts of a hydrocarbon oil to 100 parts by weight of a rubber terpolymer which is composed of 2 to 13% by weigh










 
 
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