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. 17, 1981
Filed:
Jun. 28, 1979
Helmut Schulze, Aschaffenburg, DE;
Hans Zengel, Kleinwallstadt, DE;
Walter Brodowski, Amorbach, DE;
Franciscus J Huntjens, Arnheim, NL;
Jan A Schutijser, Dieren, NL;
Peter Hentschel, Laudenbach, DE;
Akzo N.V., Arnheim, NL;
Abstract
Polyurethanes prepared from macrodiols with an average molecular weight between about 800 and 4000, lower molecular weight chain extenders with at least two labile hydrogens, and cyclohexane-1,4-diisocyanate with a trans-isomer content of at least 90%, are described. These polyurethanes exhibit exceptional mechanical properties, high softening temperatures, and remarkable stability to light and to many common solvents. Methods for preparation of the novel polyurethanes, as well as for their use, are also disclosed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile