Preparation of ultrapure polymeric articles

Details Preparation of ultrapure polymeric articles Preparation of ultrapure polymeric articles

2005-07-06

2008-12-30

Boykin, Terressa M (Department: 1796)

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

Synthetic resins

Treating polymer containing material or treating a solid...

C134S002000, C134S018000, C134S026000, C210S600000, C264S176100, C264S219000, C264S488000, C510S175000, C526S064000, C528S480000

Reexamination Certificate

active

07470767

ABSTRACT:
Ultrapure olefinic polymeric articles of manufacture can be prepared by a process comprising: providing olefinic polymeric material containing impurities, subjecting the olefinic polymeric material to supercritical CO2at a pressure of at least about 4000 psi (281.23 kg/cm2) at a temperature of from about 35° C. and above, to extract the impurities from the olefinic polymeric material and produce ultrapure olefinic polymeric material, and molding ultrapure articles of manufacture from the ultrapure, olefinic polymeric material.

REFERENCES:
patent: 3323940 (1985-01-01), None
patent: 39 38 877 (1991-05-01), None
patent: 1 712 569 (2006-10-01), None
patent: 2001 192409 (2001-07-01), None

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