Coupled radial anionic polymers

Details Coupled radial anionic polymers Coupled radial anionic polymers

2007-06-19

2007-06-19

Seidleck, James J. (Department: 1711)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S332900, C525S314000, C525S333300, C525S430000, C528S017000, C528S025000, C528S032000, C528S033000, C524S261000

Reexamination Certificate

active

10965307

ABSTRACT:
The present invention is a coupled radial anionic polymer comprising a polyhedral oligosilsesquioxane [POSS] of the formula [R—SiO3/2]n. POSS compounds having R=vinyl, glycidyldimethyl silyl, and isobutyl have been found effective in coupling anionic living polymers to yield radial polymers having 2 to 10 arms. Radial polymers of the present invention have been formed using POSS octamers and mixtures of POSS octamers, decamers and dodecamers. The present invention also relates to a process for coupling living anionic polymers with POSS compounds.

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