Styrene polymers containing blowing agents

Details Styrene polymers containing blowing agents Styrene polymers containing blowing agents

1987-06-19

1988-09-20

Foelak, Morton

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264126, 264DIG5, 264DIG7, 264DIG9, 521 58, 521 60, 521910, C08J 922, C08J 924

Patent

active

047724412

ABSTRACT:
Particulate styrene polymers containing blowing agents are prepared by a process in which an aliphatic hydrocarbon of 7 to 9 carbon atoms is added in an amount of from 0.01 to 0.5% by weight, based on the styrene polymer, before, during or after the polymerization. The particulate styrene polymers can be processed to foam blocks and moldings having a satisfactory smooth surface.

REFERENCES:
patent: 3342760 (1967-09-01), Rode et al.

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