Resinous binders having improved dilution

Details Resinous binders having improved dilution Resinous binders having improved dilution

1990-08-31

1993-02-23

Michl, Paul R.

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...

106 22R, 106 30C, 524271, 524274, 524270, C08J 302, C08L 2300, C09D 1100, C09D 1108

Patent

active

051890895

ABSTRACT:
A resinous binder is disclosed which is composed of a metal rosin resinate and a dilution increasing effective amount of a poly(ethylene-vinyl acetate) type polymer having greater than 50,000 weight average molecular weight.
Also disclosed is a gravure printing ink which comprises a solvent, a colorant and a binder system wherein all or a portion of the binder system consists of the resinous binder of this invention. The use of the resinous binder of this invention in ink compositions results in significant dilution improvement without adversely affecting other desirable properties.
Also disclosed is a method for the preparation of a resinous binder having a toluene dilution value of at least 85 mls measured from a concentration of 50% solids to a viscosity of 7.5 centipoise wherein a metal oxide or metal hydroxide of zinc, calcium, sodium, potassium or magnesium is reacted with a rosin or modified rosin and a poly(ethylene-vinyl acetate) type polymer having a weight average molecular weight of at least 50,000.

REFERENCES:
patent: 3961965 (1976-06-01), Zwahlen
patent: 4066810 (1978-01-01), Kosaka et al.
patent: 4084032 (1978-04-01), Pasersky
patent: 4302371 (1981-11-01), Matsuo et al.
patent: 4605441 (1986-08-01), Masuda et al.

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