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:
Aug. 19, 1997
Filed:
Feb. 05, 1996
Applicant:
Inventors:
Armin Gobel, Hasslinghausen, DE;
Hans-Peter Patzschke, Wuppertal, DE;
Assignee:
Herberts Gesellschaft mit beschrankter Haftung, Wuppertal, DE;
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; C08J / ; C08K / ; C08L / ;
U.S. Cl.
CPC ...
4273722 ; 4273855 ; 4273884 ; 524591 ; 524839 ; 524840 ; 524507 ; 524539 ;
Abstract
A method of manufacturing aqueous dipsersion of polyurethane resins free from urea groups and containing ionic groups and suitable for coating agents, with a number average moleculear weight (Mn) of 10,000 to 300,000 and an acid number of 5 to 50, by preparing a polyurethane prepolymer containing OH groups and with an OH number of 5 to 75 and a number average molecular weight (Mn) of 5,000 to 50,000.