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:
Dec. 19, 2000
Filed:
Dec. 01, 1998
Applicant:
Inventor:
Balasubramaniam Ramalingam, Cary, NC (US);
Assignee:
Henkel Kommanditgesellschaft auf Aktien, Duesseldorf, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08K / ; C08L / ; B65D / ; B05D / ;
U.S. Cl.
CPC ...
524591 ; 1563314 ; 1563317 ; 2065246 ; 4273722 ; 4273855 ; 4273881 ; 4273935 ; 428 352 ; 428 353 ; 428 357 ; 428 358 ; 4284231 ; 4284248 ; 4284258 ; 524589 ; 524590 ; 524839 ; 524840 ;
Abstract
Waterborne polyurethanes possessing urea-urethane linkages that are not separated by any intervening carbon atoms may be obtained by using hydroxylamine as a chain extender. Isocyanate-terminated prepolymer possessing ionized or easily ionizable groups is reacted with NH.sub.2 OH to form a polyurethane possessing urea-urethane linkages corresponding to the formula: ##STR1## The waterborne polyurethanes are useful in adhesive, coating and ink formulations and in the flexible package industry.