Polycarbodiimide pulp and process for producing thereof

Details Polycarbodiimide pulp and process for producing thereof Polycarbodiimide pulp and process for producing thereof

1992-07-01

1993-11-23

Foelak, Morton

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 45, 528 48, 528 51, 524589, 524755, 524839, C08G 1802, C08G 1876, C08G 1880

Patent

active

052645185

ABSTRACT:
The present invention is intended to provide a polycarbodiimide pulp improved in heat resistance, etc. and a process allowing for easy production of said polycarbodiimide pulp.
The polycarbodiimide pulp of the present invention consists substantially of a polycarbodiimide represented by one of the following formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each represent a lower alkyl group or a lower alkoxy group, R.sub.4 and R.sub.5 each represent a hydrogen atom, a lower alkyl group or a lower alkoxy group, and X represents an oxygen atom or a methylene group.

REFERENCES:
patent: 2853473 (1958-09-01), Campbell et al.
patent: 2941966 (1960-06-01), Campbell
patent: 3929733 (1975-12-01), Alberino et al.
patent: 3960950 (1976-06-01), Hansen
patent: 5100994 (1992-03-01), Amano et al.

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