Process for producing particulate polymer having imide groups

Details Process for producing particulate polymer having imide groups Process for producing particulate polymer having imide groups

1982-11-10

1984-01-24

Welsh, Maurice J.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525186, 528 49, 528 73, C08G 1800

Patent

active

044278225

ABSTRACT:
A particulate polymer which has imide groups and may be in gelled state can be produced by reacting a polyisocyanate with a polycarboxylic acid having at least one acid anhydride group, and if necessary together with a polycarboxylic acid other than that mentioned above in the presence of a liquid medium containing at least one non-aqueous organic liquid, and thereby obtaining the particulate polymer having imide groups dispersed in the non-aqueous organic liquid.

REFERENCES:
patent: 3518230 (1970-06-01), Sheffer et al.
patent: 3787367 (1974-01-01), Farrissey et al.
patent: 3853813 (1974-10-01), Edelman et al.

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