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:
Jan. 25, 2000
Filed:
Jun. 17, 1998
Youlu Duan, Maplewood, MN (US);
Yi Wei, St. Paul, MN (US);
Yuduo Zhu, Woodbury, MN (US);
Sonja E Stammler, Marine on the St. Croix, MN (US);
Brian L Marty, Oakdale, MN (US);
Gary J Haider, Maplewood, MN (US);
Ronald R Davies, St. Paul, MN (US);
Michael J Maksymkiw, White Bear Lake, MN (US);
H.B. Fuller Licensing & Financing,Inc., St. Paul, MN (US);
Abstract
The present invention discloses a stable aqueous polyurethane dispersions comprising a reaction product of a water dispersible isocyanate-terminated polyurethane prepolymer (A), an aqueous polyurethane dispersion (B) and water, and a method wherein a water dispersible isocyanate-terminated polyurethane prepolymer (A) is dispersed in at least one aqueous polyurethane dispersion (B) and water, and reacted at about 35.degree. C. to about 95.degree. C. until substantially free of isocyanate. The inventive dispersions are useful in adhesives, coatings, binders, primers and sizers.