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:
Dec. 13, 1988
Filed:
Aug. 07, 1987
Applicant:
Inventors:
Assignee:
Bayer Akteingesellschaft, Leverkusen-Bayerwerk, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 60 ; 528 63 ; 528 64 ; 528 66 ; 528 70 ; 528 75 ; 528 77 ; 528 83 ; 528 84 ; 528 85 ; 2643281 ; 2643286 ; 2643288 ; 524783 ;
Abstract
The invention relates to essentially linear polyurethane elastomers, having improved properties, made from polyester or polyether diols, diisocyanates and chain extenders, the latter having liquid-crystalline properties; and also films and, in particular, fibres which are prepared on the basis of such liquid-crystalline polyurethane components and are shaped thermoplastically (via melting) or from solutions (by solution spinning processes). The invention furthermore relates to an appropriate process for the preparation of the polyurethane elastomers, particularly of PU elastomer fibres (Elasthan and Spandex fibres).