Preparation of hydroxy urethanes

Details Preparation of hydroxy urethanes Preparation of hydroxy urethanes

1997-05-08

1999-11-02

Buttner, David

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528371, 560157, C07C27112, C07C26904, C08F 832

Patent

active

059772620

ABSTRACT:
The reactions of cyclic carbonates, especially 1,3-dioxolan-2-ones, with amines, especially primary amines, are catalyzed by the presence of a base whose conjugate acid has a pKa of about 11 or more. The products are hydroxy urethanes, and the process can be used to form crosslinked polymers which contain urethane groups. Such crosslinked polymers are useful in coatings.

REFERENCES:
patent: 3072613 (1963-01-01), Whelan
patent: 4395565 (1983-07-01), Romano et al.
patent: 4882391 (1989-11-01), Brindopke
patent: 5132458 (1992-07-01), Honel

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