Process for the production of a thixotropic agent, especially fo

Details Process for the production of a thixotropic agent, especially fo Process for the production of a thixotropic agent, especially fo

1988-01-14

1989-01-31

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 49, 528 73, C08G 1814

Patent

active

048016233

ABSTRACT:
The present invention is directed to a process for the production of a thixotropic agent by reacting a polyisocyanate containing a uretdione group with a polybasic carboxylic acid containing at least one carboxyl group and, optionally, OH groups. The present invention is also directed to thixotropic high molecular weight polyols containing the above thixotropic agent. Finally, the present invention is directed to storable, reactive polyurethane systems comprising thixotropic polyols and polyisocyanates which are essentially unreactive with the polyols at room temperature.

REFERENCES:
patent: 3183109 (1965-05-01), Neumann
patent: 4400497 (1983-08-01), Blum et al.
patent: 4403085 (1983-09-01), Christenson et al.
patent: 4483974 (1984-11-01), Grogler et al.
patent: 4496684 (1985-01-01), O'Connor et al.

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