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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.:

US 4791187 B1

PDFFull Text
Date of Patent:
Dec. 13, 1988

Filed:

Aug. 07, 1987

Linear polyurethane elastomers, and a process for the preparation thereof

Applicant:
Inventors:

Carlhans Suling, Odenthal, DE;

Michael Kausch, Cologne, DE;

Rudi Dauscher, Dormagen, DE;

Assignee:

Bayer Akteingesellschaft, Leverkusen-Bayerwerk, DE;

Attorney:

Connolly & Hutz

Primary Examiner:

John Kight

Assistant Examiner:

S A Acquah

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).

Find Patent Forward Citations

Suling, Carlhans. (1988). Linear polyurethane elastomers, and a process for the preparation thereof (U.S. Patent No. 4791187). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4791187

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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