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:
Oct. 19, 1976
Filed:
Jun. 24, 1974
Applicant:
Inventor:
Donald H Martin, Gulf Breeze, FL (US);
Assignee:
Monsanto Company, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29F / ; D02G / ;
U.S. Cl.
CPC ...
264171 ; 260 / ; 2642 / ; 428373 ;
Abstract
Drawing performance of a conjugated elastomeric polyurethane-hard polymer yarn is improved by critical stoichiometry in preparation of the polyurethane polymer, which is made by reacting together a high molecular weight diol, a low molecular weight diol, and a diisocyanate so that the resulting polyurethane contains between 1 and 45 (preferably between 1 and 27) microequivalents of free isocyanate groups per gram of polymer at the time of melt spinning.