Anionic polymerization with bifunctional initiators

Details Anionic polymerization with bifunctional initiators Anionic polymerization with bifunctional initiators

1990-06-13

1992-12-15

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526180, 526181, 525250, 525314, C08F 446

Patent

active

051718006

ABSTRACT:
An organic compound of an alkali metal, of the formula I ##STR1## which is obtained by reaction of an appropriate diarylethylene of the formula II with an alkali metal (M), especially lithium, ##STR2## where Ar.sup.1 and Ar.sup.2 are identical or different aryl or hetaryl radicals which have one or more rings which are either separate or fused, and where R is at least one substituent different from hydrogen and which is chemically inert to the alkali metal or its alkyl, with the proviso that the total of the carbon atoms in all the R is at least 3, and m and n are each an integer up to 4, is used for the preparation of polymers whose monomers are amenable to anionic polymerization.

REFERENCES:
patent: 3296150 (1967-01-01), Kahle
patent: 3377404 (1968-04-01), Zelinski
patent: 4181684 (1980-01-01), Sigwalt et al.
patent: 4861742 (1989-04-01), Bronstert et al.
patent: 5089572 (1992-02-01), Marchand et al.

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