Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1998-12-01
2000-12-19
Niland, Patrick D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
1563314, 1563317, 2065246, 4273722, 4273855, 4273881, 4273935, 428 352, 428 353, 428 357, 428 358, 4284231, 4284248, 4284258, 524589, 524590, 524839, 524840, C08J 300, C08K 320, C08L 7500, B65D 8584, B05D 302
Patent
active
061628638
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.
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Harper Stephen D.
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Niland Patrick D.
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