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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 5043421 B1

PDFFull Text
Date of Patent:
Aug. 27, 1991

Filed:

Aug. 04, 1989

Extruder isolation of polymers from solution

Applicant:
Inventors:

Joseph C Golba, Jr, Evansville, IN (US);

Montgomery Meigs, Schenectady, NY (US);

Kenneth G Powell, Schenectady, NY (US);

Sterling B Brown, Schenectady, NY (US);

Assignee:

General Electric Company, Schenectady, NY (US);

Attorneys:

Pittman; William H.

Davis, Jr.; James C.

Primary Examiner:

Harold D Anderson

Int. Cl.
CPC ...
C08G / ; C08G / ;
U.S. Cl.
CPC ...
528495 ; 528491 ; 528493 ; 528497 ; 528499 ;
Abstract

Polymers, such as polyphenylene ethers, are isolated from solution in an extruder by addition of at least one non-solvent. Optional steps include removal of volatiles through vents or ports on the extruder and employment of an auxiliary non-solvent. Additional operations, such as blending with further polymers, fractionation of low molecular weight molecules and functionalization by chemical reaction, may also be performed in the extruder.

Find Patent Forward Citations

Golba, Jr, Joseph. (1991). Extruder isolation of polymers from solution (U.S. Patent No. 5043421). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5043421

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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