Formation of discrete polyalkylene carbonate particles by solven

Details Formation of discrete polyalkylene carbonate particles by solven Formation of discrete polyalkylene carbonate particles by solven

1989-03-27

1990-12-04

Nielsen, Earl

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

Synthetic resins

Treating polymer containing material or treating a solid...

528370, 528491, 528493, 528494, 528496, C08G 6440

Patent

active

049755250

ABSTRACT:
Discrete, non-agglomerating particles of polyalkylene carbonate are produced by solvent
on-solvent precipitation using certain solvent
on-solvent systems. The free-flowing particles obtaine are from 30 to 3000 microns in diameter and are suitable for use in a variety of applications, particularly the preparation of foamed articles.

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patent: 4145525 (1979-03-01), Dixon et al.
patent: 4166898 (1979-09-01), Kambe et al.
patent: 4500704 (1985-02-01), Kruper et al.

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