Polymers of bromostyrenes having controlled molecular weight

Details Polymers of bromostyrenes having controlled molecular weight Polymers of bromostyrenes having controlled molecular weight

2005-09-30

2009-11-03

Teskin, Fred M (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S271000, C526S273000, C526S287000, C525S333400

Reexamination Certificate

active

07612156

ABSTRACT:
A controlled molecular weight polymer of styrene is provided having bromine substituted thereon. Control of molecular weight is achieved by the use of alpha-methyl styrene dimer as a chain transfer agent. The brominated polymer of styrene is useful as a flame retardant, particularly for polyamides giving improved properties including color retention after molding.

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