Polymeric opaque particles and process for making same

Details Polymeric opaque particles and process for making same Polymeric opaque particles and process for making same

1991-04-08

1992-09-15

Seidleck, James J.

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

Synthetic resins

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

525301, 525309, 525902, 10628727, 428514, 428522, C08F25904, C08F25906, B32B 2710

Patent

active

051479400

ABSTRACT:
A core/shell polymer is capable of increasing a composition's whiteness or opacity. The core and shell polymers have either a crystalline structure or have a T.sub.g of at least about 50.degree. C. The core polymer has a different composition than the composition of the shell polymer. The core polymer comprises vinylidene halide monomers and/or vinyl halide monomers. The core and shell polymers are either homopolymers or copolymers.

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