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:
Feb. 13, 1996
Filed:
Jun. 14, 1994
Applicant:
Inventors:
James N Rieck, Wheeling, WV (US);
Joseph M Jupa, New Martinsville, WV (US);
Assignee:
Bayer Corporation, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 60 ; 528 65 ; 528 66 ; 528272 ;
Abstract
Blooming in certain thermoplastic polyurethane products is substantially or completely eliminated by including a chain terminator. More specifically, at least one hydroxy functional polyester polyol having a molecular weight of at least 500 and a hydroxyl functionality of at least 2, a chain extender and an organic diisocyanate are combined with a chain terminator. The chain terminator which is preferably a monofunctional compound that is reactive with an isocyanate. These reactants are used in amounts such that the of NCO/H index of the formulation is at or near 100.