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.:
Date of Patent:
Jan. 05, 1999
Filed:
Jul. 30, 1997
Yuichiro Shuto, Hyogo, JP;
Hiroki Taniguchi, Hyogo, JP;
Daicel Chemical Industries, Ltd., Osaka, JP;
Abstract
Cellulose acetate propionate is a cellulose ester wherein hydroxyl groups of cellulose are substituted with acetyl and propionyl. Cellulose acetate propionate of the present invention has an amorphous index (Am) of not more than 0.4. Cellulose acetate propionate has a degree of acetyl substitution (DSac) and a degree of propionyl substitution (DSpr), which preferably satisfy the formulas (I) to (III), and more preferably satisfy the formulas (I) to (IV). The present invention also provides a solution of cellulose acetate propionate and a cellulose acetate propionate film. (I) 2.0<DSac.ltoreq.2.95
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile