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. 19, 1988
Filed:
Sep. 19, 1986
Applicant:
Inventors:
Hajime Hara, Fujisawa, JP;
Shingo Orii, Kawasaki, JP;
Tetsuo Satoh, Yokohama, JP;
Tomohiro Toya, Yokohama, JP;
Shigeki Iida, Yokohama, JP;
Assignee:
Nippon Oil Company, Limited, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
26421112 ; 264204 ; 264235 ; 264237 ; 26432814 ; 26433118 ; 26433121 ; 264345 ; 528176 ; 528271 ;
Abstract
A process for producing a cholesteric liquid crystal polyester film or sheet possessing an ordered planar texture (monodomain structure), which process comprises providing a cholesteric liquid crystal polyester in which 1 to 10 mol % of constituent monomer units are optically active, allowing the cholesteric liquid crystal polyester to be formed in the temperature range of 150.degree. to 350.degree. into a film or sheet having a thickness not larger than 100 .mu.m, and then cooling the film or sheet rapidly.