Flon-resistant rubber modified polystryrene composition

Details Flon-resistant rubber modified polystryrene composition Flon-resistant rubber modified polystryrene composition

Filed on

2005-04-19

Date issued

2005-04-19

Examiner

Cain, Edward J. (Department: 1714)

Patent Class

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

SubClass

Synthetic resins

SubSubClass

Processes of preparing a desired or intentional composition...

Other Related Categories

C525S217000, C525S223000, C525S232000, C525S238000, C525S241000

Type

Reexamination Certificate

Status

active

Patent number

06881767

Description

ABSTRACT:
A rubber modified polystyrene composition comprising polybutadiene particles dispersed in polystyrene, wherein the polybutadiene particles have an average volume particle diameter of 6 to 13 microns, and the composition has a gel content of 25 to 35% by weight and a degree of swelling of 13 to 22, is prepared by polymerizing the polybutadiene particles in the presence of styrene. The rubber modified polystyrene composition of the present invention may be used for components contacting flon compounds, such as components of refrigerators.

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