Process for the production of mercapto group-containing oligoure

Details Process for the production of mercapto group-containing oligoure Process for the production of mercapto group-containing oligoure

1986-02-20

1988-05-03

Hoke, Veronica P.

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

Synthetic resins

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

525454, 528 51, 528 76, 560158, C07C149437, C08G 1838, C08G 5966, C08F27900

Patent

active

047421258

ABSTRACT:
The present invention is directed to a process for the production of oligourethanes having terminal mercapto groups by reacting organic polyisocyanates with sub-equivalent quantities of organic polyhydroxyl compounds and a mercapto-alkanol in the presence of at least one ester of phosphoric acid containing at least one hydroxyl group bound to phosphorus. The present invention is also directed to the mercapto group-containing oligourethanes obtainable by this process and their use as binders for oxidatively-hardenable coating and sealing compositions, additives for epoxide resins and cross-linking agents for plastics materials and plastics crude products containing olefinic double bonds.

REFERENCES:
patent: 3446780 (1969-05-01), Bertozzi
patent: 4110295 (1978-08-01), Wilhelm et al.
patent: 4113707 (1978-09-01), Louthan et al.

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