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
1982-04-26
1984-04-10
Schofer, Joseph L.
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...
524591, C08L 7500
Patent
active
044422598
ABSTRACT:
Aqueous-based polyurethane elastomer compositions which can be used as adhesives and a method of preparing same are described. The polyurethane compositions are prepared by chain extending an isocyanate-terminated urethane prepolymer with an equivalent excess of water in the presence of a monofunctional isocyanate group blocking agent to provide a reaction mixture having a desired adhesive capability and thereafter adding additional blocking agent to the reaction mixture in an equivalent amount at least substantially equal to the remaining equivalent amount of unreacted isocyanate groups in the prepolymer.
REFERENCES:
patent: 3373143 (1968-03-01), Chilvers et al.
patent: 3428609 (1969-02-01), Chilvers et al.
patent: 3733310 (1973-05-01), Aitken
patent: 3835081 (1974-09-01), Remley
patent: 3948847 (1976-04-01), Aitken et al.
patent: 4137200 (1979-01-01), Wood et al.
patent: 4293679 (1981-10-01), Cogliano
patent: 4322327 (1982-03-01), Yoshimura et al.
"Adhesion 3", K. W. Allen ed., Applied Science Publishers Ltd., London, pp. 159-161.
Polyurethanes Chemistry & Technology, Saunders & Frisch, pp. 485-490.
DelVecchio William D.
Isgur Irving E.
Baker William L.
Sarofim N.
Schofer Joseph L.
W. R. Grace & Co.
Wasatonic John J.
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