Polyurethanes from trans-cyclohexane-1,4-diisocyanate

Details Polyurethanes from trans-cyclohexane-1,4-diisocyanate Polyurethanes from trans-cyclohexane-1,4-diisocyanate

1979-06-28

1981-03-17

Welsh, Maurice J.

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 83, C08G 1875

Patent

active

042568692

ABSTRACT:
Polyurethanes prepared from macrodiols with an average molecular weight between about 800 and 4000, lower molecular weight chain extenders with at least two labile hydrogens, and cyclohexane-1,4-diisocyanate with a trans-isomer content of at least 90%, are described. These polyurethanes exhibit exceptional mechanical properties, high softening temperatures, and remarkable stability to light and to many common solvents.
Methods for preparation of the novel polyurethanes, as well as for their use, are also disclosed.

REFERENCES:
patent: 4119613 (1978-10-01), Reischl et al.
Kozhevov et al., Chem. Abstr. 77, 35027f, 1972.
Roberts et al., Basic Principles of Organic Chemistry, W. A. Benjamin, Inc., N. Y., 1964, pp. 115-117.

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