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:
Mar. 14, 1989
Filed:
Mar. 31, 1988
Applicant:
Inventors:
Toshihiro Sagane, Amherst, MA (US);
Robert W Lenz, Amherst, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526313 ; 526299 ;
Abstract
A thermotropic polymer, having an optically anisotropic phase, comprises recurring units of the formula (1) ##STR1## wherein R is a substantially linear organic substituent having a bulkiness factor greater than about 4 .ANG., and wherein X is a direct bond, --O--CH.sub.2).sub.n (n being an integer of 1 to 8) or --OCH.sub.2 CH.sub.2).sub.m (m=1, 2 or 3). The thermotropic polymer has a molecular weight distribution (Mw/Mn) of less than about 1.4.