Tapered block styrene/butadiene copolymers

Details Tapered block styrene/butadiene copolymers Tapered block styrene/butadiene copolymers

1990-12-20

1993-07-13

Ziegler, Jacob

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524349, 524351, 525250, 525256, 525258, 525271, 525314, C08F29300, C08F29704, C08K 552

Patent

active

052274195

ABSTRACT:
A method for preparing tapered block copolymers in a polymerization process by charging an initiator and monomers sequentially with one or more charges of first one of the monomers, then with a mixture of the two monomers, and then with one or more charges of the first monomer to produce a polymodal tapered block copolymer. Suitable monomers include conjugated dienes and monovinylaromatic compounds. The copolymers are particularly useful for applications requiring environmental stress crack resistance.

REFERENCES:
patent: 4054616 (1977-10-01), Miki et al.
patent: 4080407 (1978-03-01), Fodor
patent: 4167545 (1979-09-01), Fahrbach et al.
patent: 4208356 (1980-06-01), Fukawa et al.
patent: 4248981 (1981-02-01), Milkovich et al.
patent: 4335221 (1982-06-01), Gerberding
patent: 4704434 (1987-11-01), Kitchen et al.
patent: 4704435 (1987-11-01), Kitchen

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