High impact graft copolymers

Details High impact graft copolymers High impact graft copolymers

1975-05-15

1977-03-15

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260878R, 260879, C08L 906

Patent

active

040124622

ABSTRACT:
High impact polymer having broad rubber particle size distribution is prepared by a bulk-bulk-suspension three step polymerization process. A portion of a rubber-in-monomer solution is bulk polymerized to form a small average rubber particle size. The remaining portion of the same or a different rubber solution having the same or a different concentration is added to the system and stirred or polymerized until the desired distribution of rubber particle size is attained in the system. The system is then polymerized in suspension to form the desired high impact product.

REFERENCES:
patent: 3428712 (1969-02-01), Carrock
patent: 3488743 (1970-01-01), Baer
patent: 3488744 (1970-01-01), Nemphos
patent: 3579612 (1971-05-01), Lowell
patent: 3781383 (1973-12-01), Finestone
patent: 3825625 (1974-07-01), Kudo
patent: 3883616 (1975-05-01), Hozumi

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