Polyhydroxy urethanes formed by reaction of reduced sugars and o

Details Polyhydroxy urethanes formed by reaction of reduced sugars and o Polyhydroxy urethanes formed by reaction of reduced sugars and o

1990-10-15

1993-06-08

Kight, III, John

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 75, 528 76, 528 85, 525453, 568704, 568705, C04G 1830

Patent

active

052180735

ABSTRACT:
Polyhydroxy urethanes prepared from reduced sugars of the formula C.sub.x H.sub.2(x+1) O.sub.x where x is 4, 5 and 6 and diisocyanates are disclosed. There is a molar excess of 1.5 and preferably 2.0 of the reduced sugar in the polyhydroxy urethane product and the molecular weight of the product is generally less than 1,500 and preferably less than 1,000.

REFERENCES:
patent: 4021405 (1977-05-01), Tucker et al.
patent: 4206299 (1980-06-01), Yamazaki et al.
patent: 4507458 (1985-03-01), Shiraki et al.
patent: 4740534 (1988-04-01), Matsuda et al.
patent: 5028642 (1991-07-01), Goodrich et al.

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