3,4-polyisoprene-containing rubber blend mixtures for tire tread

Details 3,4-polyisoprene-containing rubber blend mixtures for tire tread 3,4-polyisoprene-containing rubber blend mixtures for tire tread

1991-03-20

1992-04-14

Seccuro, Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525236, 525192, 524526, 152209R, C08L 900, C08L 906, B60C 902

Patent

active

051049414

ABSTRACT:
Rubber mixtures for tire treads are found, which show an improved wet skid resistance coupled with balanced abrasion and rolling resistance properties. This is achieved by rubber blend mixtures which contain 3,4-polyisoprene having a 3,4-content from 55 to 75%, a glass transition temperature from 0.degree. to -25.degree. C., a number average molecular weight of 200,000 and higher and an inhomogeneity U of less than 1.8. Motor vehicle tires can be prepared in an advantageous manner with these rubber mixtures.

REFERENCES:
patent: 4385151 (1983-05-01), Furukawa et al.
patent: 4521587 (1985-06-01), Furukawa et al.
patent: 4843120 (1989-06-01), Halasa et al.
Abstract of Japanese Patent 60-94433, Misawa et al., 5/85.
Abstract of Japanese Patent 60-94435, Mizoguchi et al., 5/85.

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