Hydrogenated block copolymers of butadiene and isoprene

Details Hydrogenated block copolymers of butadiene and isoprene Hydrogenated block copolymers of butadiene and isoprene

1975-05-08

1976-10-12

Hamrock, William F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260878R, 260878B, 260879, C08F 1504, C08F 1540

Patent

active

039858260

ABSTRACT:
The products disclosed herein involve hydrogenated butadiene-isoprene block copolymers having at least five alternating blocks of the two respective monomers. Such hydrogenated block copolymers have an improved permanent set or lower residual strain as compared to similar hydrogenated block copolymers having only three such alternating blocks. Moreover, a milled product made from such material has a much improved smoothness of surface. These new products are particularly useful in making rubber hose, shoe soles, etc. and are also useful for blending with polyolefins, such as polyethylene, to improve the impact resistance of polyolefin resins without sacrifice of rigidity.

REFERENCES:
patent: 3452118 (1969-06-01), Winkler et al.
patent: 3465063 (1969-09-01), Hassell et al.

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