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. 02, 2012
Filed:
Nov. 10, 2008
Arno Nennemann, Bergisch Gladbach, DE;
Markus Mechtel, Bergisch Gladbach, DE;
Thomas Klimmasch, Leverkusen, DE;
Meike Niesten, Köln, DD;
Arno Nennemann, Bergisch Gladbach, DE;
Markus Mechtel, Bergisch Gladbach, DE;
Thomas Klimmasch, Leverkusen, DE;
Meike Niesten, Köln, DD;
Bayer MaterialScience AG, Leverkusen, DE;
Abstract
Processes for preparing siloxane-modified polyisocyanates, the processes comprising: providing a polyisocyanate reactant; and reacting the polyisocyanate reactant with a hydroxyl-containing siloxane having a number-average molecular weight of 200 to 3000 g/mol and an average OH functionality of greater than or equal to 1.8, and corresponding to the general formula (I): wherein X represents an aliphatic, unbranched or branched Cto Cradical optionally containing ether groups; R represents a hydroxyl-functional radical; Rrepresents a hydrogen or an optionally heteroatom-containing Cto Chydrocarbon radical; and n is 1 to 40; siloxane-modified polyisocyanates prepared thereby, and uses therefor.