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:
Jul. 21, 1992
Filed:
May. 13, 1991
Roman C Domszy, Lancaster, PA (US);
Paul J Shannon, Exton, PA (US);
Armstrong World Industries, Inc., Lancaster, PA (US);
Abstract
The present invention is directed to liquid cyrstalline polyesters which are soluble and have low melting points. Preferably the solubility in halogenated solvent is greater than 10 wt. % and the crystalline melting point is less than 125.degree. C. The polyesters are thermotropic and nematic, and preferably have a number average molecular weight from 1,000 to 25,000. The polyesters include a cyclohexane ring in the backbone and are more particularly main-chain thermotropic polyester which contain trans-1,4 cyclohexane dicarboxylate mesogens and flexible spacer groups. These compositions are useful in coating applications including floor coverings.