Polyurethane coating compositions

Details Polyurethane coating compositions Polyurethane coating compositions

1989-03-02

1991-01-08

Welsh, Maurice J.

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...

524507, 524591, 524839, 524840, C08G 1804, C08L 7512, C08L 7514

Patent

active

049836625

ABSTRACT:
Aqueous selfcrosslinkable coating composition comprising an aqueous dispersion of at least one polyurethane and having hydrazine (or hydrazone) functional groups and carbonyl functional groups disposed therein to provide a selfcrosslinking reaction, in which the polyurethane polymer takes part, via azomethine formation during and/or after film formation.

REFERENCES:
patent: 3862074 (1975-01-01), Hickey
patent: 4172191 (1979-10-01), Nachtkamp et al.
patent: 4269748 (1981-05-01), Nachtkamp et al.
patent: 4335029 (1982-06-01), Dabi et al.
patent: 4452834 (1984-06-01), Nachtkamp
patent: 4507440 (1985-03-01), Engelhardt et al.
patent: 4543144 (1985-09-01), Thoma et al.
patent: 4594385 (1986-06-01), Thoma
patent: 4598121 (1986-07-01), Disteldorf et al.
patent: 4652466 (1987-03-01), Thoma

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