High-molecular weight polycarbodiimide solution and methods for

Details High-molecular weight polycarbodiimide solution and methods for High-molecular weight polycarbodiimide solution and methods for

1990-05-01

1995-05-16

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 48, 528 51, 524706, 524709, 524710, 524751, 524754, 524792, C08G 1800

Patent

active

054161843

ABSTRACT:
This invention provides methods for producing a high-molecular weight polycarbodiimide solution from an organic diisocyanate in the presence of a carbodiimidation catalyst, wherein 1) a chlorinated aliphatic hydrocarbon or 2) an alicyclic ether is used as a solvent. This invention also provides a polycarbodiimide solution with excellent stability in preservation.

REFERENCES:
patent: 2941966 (1960-06-01), Campbell
patent: 4042558 (1977-08-01), Bonin et al.
patent: 4088665 (1978-05-01), Findeisen et al.
patent: 4939210 (1990-07-01), Imashiro et al.
Brandrup & Immergut; Polymer Handbook, 1966, pp. IV 344, 345, 348, 352.
J. M. G. Cowie; Polymers: Chemistry & Physics of Modern Materials; 1973; p. 144.

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