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. 15, 1989
Filed:
Sep. 08, 1988
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
523343 ; 523324 ; 523340 ; 524591 ; 524840 ;
Abstract
The present invention is directed to a continuous process for the production of aqueous polyurethane dispersions by continuously mixing solutions of polyurethanes or isocyanate prepolymers dissolved in an organic solvent with water and subsequently continuously removing at least a portion of the solvent using a circulation-type evaporator. The present invention is also directed to the production of coatings or adhesives by applying the aqueous polyurethane dispersions to a substrate.