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:
Nov. 10, 1998
Filed:
Mar. 05, 1996
Applicant:
Inventors:
Youlu Duan, Minneapolis, MN (US);
Douglas U Gwost, Shoreview, MN (US);
Lowell Lindquist, St. Paul, MN (US);
Scott Rhein, Forest Lake, MN (US);
Thomas E Rolando, Maple Grove, MN (US);
Sonja Stammler, St. Croix, MN (US);
Peter A Voss, Plymouth, MN (US);
Michael J Dockniak, Stillwater, MN (US);
Assignee:
H. B. Fuller Licensing & Financing, Inc., Arden Hills, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08J / ; C08L / ; C09J / ;
U.S. Cl.
CPC ...
524591 ; 1563311 ; 1563314 ; 1563317 ; 4284231 ; 4284235 ; 4284237 ; 4284242 ; 4284244 ; 4284246 ; 4284258 ; 524539 ; 524507 ; 524839 ; 524840 ;
Abstract
A process for the preparation of sulfonated polyurethane-urea polymers, which are useful film to film laminating adhesives for flexible packaging in which the urethane-urea polymer component has no amide linkages. The water-based sulfonated polyurethane prepolymers are processed at reduced temperatures and are substantially free of volatile and/or leachable contaminants.