Expandable thermoplastic polymer particles and method for making

Details Expandable thermoplastic polymer particles and method for making Expandable thermoplastic polymer particles and method for making

1998-09-22

1999-11-02

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 12, 521 56, 521 79, C08J 916, C08J 918

Patent

active

059771950

ABSTRACT:
An improved process for manufacture of expandable polymer particles is provided. The continuous process disclosed produces expandable polymer pellets in a single step while eliminating many of the dangers inherent in processes of prior art employed for the same. The polymers produced herein are of uniform size, and may be molded into various articles of manufacture using existing equipment and techniques known to those skilled in the art.

REFERENCES:
patent: 3026272 (1962-03-01), Rubens et al.
patent: 3026273 (1962-03-01), Engels
patent: 3067147 (1962-12-01), Rubens et al.
patent: 3121132 (1964-02-01), Del Bene
patent: 3371053 (1968-02-01), Raskin
patent: 3888957 (1975-06-01), Netting
patent: 5582779 (1996-12-01), Gross et al.

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