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. 12, 1983
Filed:
Apr. 06, 1981
Applicant:
Inventors:
Katsuzi Ueno, Hirakata, JP;
Takashi Maruyama, Toyonaka, JP;
Haruo Suzuki, Ibaraki, JP;
Teruo Saito, Takatsuki, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ;
U.S. Cl.
CPC ...
525439 ; 525389 ; 525444 ;
Abstract
A method for prevention of loss of transparency of shaped articles prepared from a polyarylene ester blend comprising a polyarylene ester and other thermoplastic resin when treated with steam or boiling water, which comprises reducing the sodium content of the blend to less than 70 ppm.