Method for improving the melt flow rate of polystyrene

Details Method for improving the melt flow rate of polystyrene Method for improving the melt flow rate of polystyrene

1986-10-20

1988-11-01

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528503, 521 97, 521146, 525241, 26432817, 26433117, 264345, 264348, C08F 600, C08J 918, B29B 1304

Patent

active

047821345

ABSTRACT:
The specification discloses a method for assuring consistent and, if desired, increased melt flow rate in a vinyl aromatic based polymer by controlling the degree of absorption of carbon dioxide, oxygen and/or argon for a substantial period of time immediately prior to introduction of the polymer into a molding machine.

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"The Merck Index", (9th ed.) Windholz, M. (ed.) Merck and Co., N.J. (1976) pp. 230-231.
Translation of Ger. Offen. 3,323,940 to Braun et al.

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