Polyurethanes prepared from dispersions or solutions of choleste

Details Polyurethanes prepared from dispersions or solutions of choleste Polyurethanes prepared from dispersions or solutions of choleste

1987-07-14

1988-05-17

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521128, 521129, 521130, 521135, 521137, 521163, 521164, 521167, 524186, 524198, 524212, 524244, 525127, 525128, 525130, C08G 1814

Patent

active

047451360

ABSTRACT:
A solution or colloidal dispersion of a polymer of an ethylenically unsaturated steroid derivative in an active hydrogen-containing compound is claimed. The polymer provides improved physical properties to a polyurethane made by reacting the solution or dispersion with an polyisocyanate.

REFERENCES:
patent: 3872050 (1975-03-01), Benton et al.
Sato, Porima Daijesuto, vol. 37, No. 6, pp. 10-16, 1985.
Jadhav et al., "Liquid Crystalline Polyurethanes", Gordon Research Conference", Jul. 7, 1986.
Iimura et al., Makromol. Chem., 182, pp. 2569-2575, 1981.
Tanaka et al., Polym. Preprints, Japan, 33(7), pp. 1647-1650, 1984.
Verbit et al., Mol. Cryst. Liq. Cryst., 1975, 30, pp. 87-99, 1972.
Tanaka et al, Kobunshi Ronbunshu, 43, pp. 311-314, 1986.

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