Compounds containing hydroxyl groups and urethano-aryl-sulfonic

Details Compounds containing hydroxyl groups and urethano-aryl-sulfonic Compounds containing hydroxyl groups and urethano-aryl-sulfonic

1979-06-15

1980-09-23

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

528 69, 528 71, 528 74, 528 76, 528 77, 528 80, 528 81, 528 83, 528 85, 560 10, 560 12, 560 13, C08L 8100

Patent

active

042244188

ABSTRACT:
The instant invention is directed to compounds having an average molecular weight of from 300 to 12,000, containing: at least one hydroxyl group and at least one urethano-aryl-sulfonic acid group and a method for their preparation. The process is characterized as a process for the preparation of compounds having a number average molecular weight of from 300 to 12,000 having at least one hydroxyl group and at least one urethano-aryl-sulfonic acid group, comprising: reacting at from 0.degree. to 190.degree. C.
(A) compounds having a molecular weight of from 62 to 10,000 having at least two hydroxyl groups; with
(B) aromatic isocyanato sulfonic acids, wherein the equivalent ratio of the total quantity of isocyanate groups (including any isocyanate groups present in dimerized form) to sulfonic acid groups is from 0.5:1 to 50:1 and the equivalent ratio of the sum of hydroxyl groups in (A) to NCO groups is from 1.5:1 to 30:1. The invention is also directed to the product by the process.

REFERENCES:
patent: 3826769 (1974-07-01), Carlson
patent: 4119658 (1978-10-01), Dieterich

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