Polysiloxane crosslinked styrene/butadiene copolymers

Details Polysiloxane crosslinked styrene/butadiene copolymers Polysiloxane crosslinked styrene/butadiene copolymers

1990-04-30

1992-02-04

Marquis, Melvyn I.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525105, 525479, 528 25, C08F 3008

Patent

active

050861417

ABSTRACT:
A crosslinked polysiloxane styrene/butadiene copolymer represented by the formula of FIG. 1 wherein m is a number of from about 2 to about 10; n is a number of from about 10 to about 1,000; k, l, o, p, q, r, s, t, u are weight fraction numbers totaling one with the sum of k+p+r+t being from about 0.35 to about 0.94; the sum of l+q+s+u being from about 0.05 to about 0.2 and o is from about 0.02 to about 0.5; R is CH.sub.1 CH(R'), or alkylene - CR" C(O)O, where R' is an aromatic or substituted aromatic substituent and R" is hydrogen or an alkyl substituent.

REFERENCES:
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patent: 3691257 (1972-09-01), Kendrick et al.
patent: 3929850 (1975-12-01), Streck et al.
patent: 4139519 (1979-02-01), Itoh et al.
patent: 4340660 (1982-07-01), Kiuchi et al.
patent: 4770968 (1988-09-01), Georges

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