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. 09, 1996
Filed:
Jul. 11, 1994
Applicant:
Inventors:
Akira Ogiso, Fukuoka, JP;
Tsutami Misawa, Kanagawa, JP;
Rihoko Imai, Tokyo, JP;
Hisato Itoh, Fukuoka, JP;
Assignee:
Mitsui Toatsu Chemicals, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524110 ;
Abstract
A 2H-1-benzopyran-2-on compound represented by the formula (1): ##STR1## and a colorless ultraviolet absorber consisting of the compound, and a thermoplastic resin composition and formed article comprising said ultraviolet absorber. The compound can provide a thermoplastic resin composition and a formed article of the composition having excellent heat stability and sublimation resistance, comprise a non-coloring ultraviolet absorber, and are excellent in ultraviolet barrier property.