Select NCO-terminated, uretdione group-containing polyurethane p

Details Select NCO-terminated, uretdione group-containing polyurethane p Select NCO-terminated, uretdione group-containing polyurethane p

1984-06-01

1985-06-11

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...

4273855, 427389, 528 67, 528 73, C08L 7500, C08G 1874

Patent

active

045229759

ABSTRACT:
Select NCO-terminated, uretdione group-containing polyurethane prepolymers are prepared by reacting a uretdione group-containing organic polyisocyanate with an isocyanate reactive hydrogen atom-containing compound, employing a select equivalent ratio of NCO to OH ranging from about 1.5/1 to about 2/1. The polyurethane prepolymers are useful in the preparation of lignocellulosic composite materials, such as particle board, and in making coatings.

REFERENCES:
patent: 3099642 (1963-07-01), Holtschmidt et al.
patent: 3248370 (1966-04-01), Reischl et al.
patent: 3897581 (1975-07-01), Nakatsuka et al.
patent: 3923713 (1975-12-01), Hermann
patent: 3993641 (1976-11-01), Tiemann et al.
patent: 4044171 (1977-08-01), Muller et al.
patent: 4238378 (1980-12-01), Markusch et al.
patent: 4336365 (1982-06-01), Reischl et al.
patent: 4413079 (1983-11-01), Disteldorf et al.
Saunders et al., Polyurethanes, Part I, Interscience, N.Y., 1962, pp. 91-94.

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