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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 7863439 B1

PDFFull Text
Date of Patent:
Jan. 04, 2011

Filed:

Feb. 25, 2004

Cellulose ester having improved stability to wet heat

Applicants:

Toru Ozaki, Tatsuno, JP;

Toru Shibata, Himeji, JP;

Shu Shimamoto, Himeji, JP;

Inventors:

Toru Ozaki, Tatsuno, JP;

Toru Shibata, Himeji, JP;

Shu Shimamoto, Himeji, JP;

Assignee:

Daicel Chemical Industries, Ltd., Sakai-shi, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Shaojia Anna Jiang

Assistant Examiner:

Scarlett Goon

Int. Cl.
CPC ...
C08B 3/00 (2006.01); C08B 5/00 (2006.01); C08B 7/00 (2006.01); C08B 13/00 (2006.01); C08B 3/06 (2006.01); C08L 1/00 (2006.01); C08L 3/00 (2006.01); C08L 5/00 (2006.01); C09D 101/00 (2006.01); C09D 103/00 (2006.01); C09D 105/00 (2006.01); C09J 101/00 (2006.01); C09J 103/00 (2006.01); C09J 105/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The present invention provides a cellulose ester in which heat resistance under wet condition is compatible with both releasability and spinnability even when the amount of the residual solvent is small in a casting process. The cellulose ester fulfills the following formula:0.5<()/()<1.5 wherein (A) and (B) represent the total amount (in terms of molar amount) of residual sulfuric acid in 1 gram of the cellulose ester and the total amount (in terms of molar amount) of calcium contained in 1 gram of the cellulose ester, respectively.

Find Patent Forward Citations

Ozaki, Toru. (2011). Cellulose ester having improved stability to wet heat (U.S. Patent No. 7863439). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7863439

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

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