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 8796401 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 05, 2014

Filed:

Sep. 06, 2011
Applicant:

Yi-lin Chu, Hsinchu, TW;

Inventor:

Yi-Lin Chu, Hsinchu, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/01 (2006.01); C08G 64/24 (2006.01); B01J 19/18 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention relates to a new polymerization process which is suitable for polymerizing high molecular weight products of high viscosity such as polycarbonates and polystyrenes in reasonable time. The present invention achieves the above-identified object by means of a polymerization process, wherein at least in the final stages of the polymerization reaction, two different types of mechanical mixing means are employed as alternatives, designated first and second mixing means. The first mixing means do generate new surfaces in the material to be treated by means of mechanical mixing and by means of gravity driven mixing, while the second mixing means do generate new surfaces in the material to be treated not by means of mechanical mixing and only by means of gravity driven mixing.


Find Patent Forward Citations

Chu, Yi-Lin. (2014). Polymerization of high viscosity materials (U.S. Patent No. 8796401). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8796401

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