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:
Nov. 25, 1997
Filed:
Oct. 11, 1996
Applicant:
Inventors:
Stephen D Seneker, Sissonville, WV (US);
Bruce D Lawrey, Charlestown, WV (US);
Assignee:
Arco Chemical Technology, L.P., Greenville, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C07C / ;
U.S. Cl.
CPC ...
528 61 ; 528 64 ; 528 76 ; 528 77 ; 528906 ; 560 26 ; 560115 ; 560158 ; 560330 ; 560336 ; 560355 ; 560358 ;
Abstract
Substitution of from 5 to 50 equivalent percent of an ultra-low unsaturation polyoxypropylene diol for PTMEG in isocyanate-terminated prepolymers used in spandex production is found to lower considerably both prepolymer viscosity and hysteresis while substantially retaining other desirable physical properties. Such products may offer higher fiber production rates than are possible while employing an all PTMEG-derived polymer.