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:
Apr. 17, 2001
Filed:
Dec. 03, 1999
Richard S. Pantone, New Martinsville, WV (US);
Peter H. Markusch, McMurray, PA (US);
Bayer Corporation, Pittsburgh, PA (US);
Abstract
This invention relates to novel liquid, ultra-high molecular weight polyurethane plasticizers which contain less than 5% of urethane groups, and to a process for the preparation of these polyurethane plasticizers. These comprise the reaction product of an organic isocyanate component selected from the group consisting of monoisocyanates, diisocyanates, polyisocyanates and mixtures thereof; with an isocyanate-reactive compound having a molecular weight of more than about 4,000, an OH number of 7 to 56 and a functionality of about 1 to about 4. This invention also relates to a process for the production of a polyurethane comprising reacting a polyisocyanate with an isocyanate-reactive compound in the presence of the liquid, ultra-high molecular weight polyurethane plasticizers described herein, and to the resultant polyurethanes containing these plasticizers.