Printing ink resins

Details Printing ink resins Printing ink resins

1977-05-04

1978-09-05

Welsh, M. J.

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...

106 20, 106308M, 528 78, 260 37N, C08G 1862

Patent

active

041119169

ABSTRACT:
Cyanoethylated polyurethanes suitable for use as hard ink resins are prepared by the steps of (1) reacting a polyol having a functionality of at least 3 with an alkyl acrylate or a cyanoethylation agent such as acrylonitrile, (2) acidifying the product adduct, and (3) reacting the remaining hydroxyl groups with a polyisocyanate and optionally at least one monofunctional reactive hydrogen-containing compound and/or a glycol to yield a urethane polymer with terminal nitrile groups at repeating branch points.

REFERENCES:
patent: 3182043 (1965-05-01), Kirkland
patent: 3816425 (1974-06-01), Canton et al.

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