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:
Jun. 23, 1992
Filed:
Sep. 25, 1989
Applicant:
Inventors:
Robin E Tirpak, Wheeling, WV (US);
Robert L Cline, Paden City, WV (US);
Assignee:
Miles Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ; C08G / ; C09J / ;
U.S. Cl.
CPC ...
524591 ; 524839 ; 524840 ; 524871 ; 524874 ; 528 48 ; 528 60 ; 528 61 ; 528 68 ; 528 76 ; 528 80 ;
Abstract
The invention is related to an adhesive comprising a stable, fine particle size aqueous dispersion of polyurethane-urea which is the reaction product of an isocyanate-terminated prepolymer with an amine-containing chain extending agent which is characterized in that the functionality of said agent is about 2.05 to about 2.50. The adhesive was surprisingly and unexpectedly found to exhibit an increased softening point temperature as compared to the corresponding temperature of related adhesives which contains no such chain extending agent.