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:
Aug. 01, 1978
Filed:
Nov. 18, 1975
Applicant:
Inventors:
Yasuo Kato, Shiga, JP;
Tadashi Ikegami, Otsu, JP;
Junichi Harukawa, Otsu, JP;
Katsuhiko Kato, Otsu, JP;
Assignee:
Toyo Boseki Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528169 ; 260 / ; 260860 ; 260D / ; 528173 ;
Abstract
A fireproof linear aromatic polyester having a high stability to ultraviolet rays and heat contains a unit of the formula: ##STR1## WHEREIN R.sub.1 and R.sub.2 are each a straight or branched alkylene group having 1 to 5 carbon atoms and n.sub.1 and n.sub.2 are each an integer of from 1 to 4. The addition of an organic pentavalent phosphorus compound may improve the fireproof properties of products prepared from said polyesters.