Blend of radial block copolymers having high impact strength

Details Blend of radial block copolymers having high impact strength Blend of radial block copolymers having high impact strength

1975-11-10

1977-09-27

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260880B, C08L 5302

Patent

active

040511979

ABSTRACT:
Two or more separate radial block copolymers of a monovinyl-substituted aromatic compound and a conjugated diene each having a heterogeneity index (ratio of weight average to number average molecular weight) for the monovinyl-substituted aromatic block outside the range of about 2.8 to 3.5 are mixed to give a blend having a heterogeneity index for the monovinyl-substituted aromatic compound blocks within the range of about 2.8 to 3.5, said blend having a high impact strength.

REFERENCES:
patent: 3281383 (1966-10-01), Zelinski
patent: 3507934 (1970-04-01), Minor
patent: 3637554 (1972-01-01), Childers
patent: 3639517 (1972-02-01), Kitchen
patent: 3954696 (1976-05-01), Roest

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