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:
Apr. 09, 2002
Filed:
Dec. 13, 1999
Applicant:
Inventor:
David Richard Fagerburg, Kingsport, TN (US);
Assignee:
Eastman Chemical Company, Kingsport, TN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 2/718 ; B32B 2/736 ; B32B 2/708 ;
U.S. Cl.
CPC ...
B32B 2/718 ; B32B 2/736 ; B32B 2/708 ;
Abstract
A copolyester blend resistant to ultraviolet radiation includes a polyethylene terephthalate based copolyester having 1,4-cyclohexanedimethanol; an effective amount of an ultraviolet radiation absorber selected from the group consisting of benzoxazinones, dimeric benzotriazoles, triazines and mixtures thereof; and from 5 mol % to about 40 mol % isophthalic acid residues present in the copolyester wherein the mole percent is based on 100 mole percent of dicarboxylic acid or equivalents. The copolyester blend is useful in making UV radiation resistant thermoformed articles.