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:
May. 13, 1997
Filed:
Mar. 31, 1994
Applicant:
Inventors:
Josef Pedain, Cologne, DE;
Detlef-Ingo Schutze, Cologne, DE;
Wilhelm Thoma, Leverkusen, DE;
Klaus Nachtkamp, Duesseldorf, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
528 45 ; 524590 ; 524840 ; 524871 ; 524874 ; 524875 ; 528 49 ; 528 52 ; 528 57 ; 528 60 ; 528 61 ; 528 64 ; 528 65 ; 528 71 ; 528 76 ; 528 80 ; 528 85 ; 427389 ; 4273899 ; 4273934 ;
Abstract
This invention relates to coating compositions containing (A) a polyurethane system containing either a polyurethane containing ionic groups and polyethylene oxide units or a precursor thereof prepared from a blocked isocyanate prepolymer and a cross-linking agent and, optionally, (B) organic solvents. This invention further relates to the use of such coating compositions to prepare coatings that are permeable to water vapor.