Process for preparing modified polymer emulsion adhesives

Details Process for preparing modified polymer emulsion adhesives Process for preparing modified polymer emulsion adhesives

1985-09-30

1987-01-13

Ivy, C. Warren

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...

525123, C08L 3310, C08L 3308, C08L 3302

Patent

active

046365460

ABSTRACT:
This invention is directed to an improved process for preparing coating or adhesive compositions useful in bonding expanded vinyl which is vacuum laminated to molded fiberboard substrates, comprising (1) mixing an aqueous dispersion of an addition polymer containing active hydrogen, wherein the addition polymer contains essentially no polyurethane functional moieties, with water emulsifiable difunctional and/or multi-functional isocyanate, and (2) subsequently adding to the mixture an aqueous dispersion of a polyurethane polymer. Adhesive compositions prepared using the process exhibit both superior shear strength and superior hot peel strength at elevated temperatures.

REFERENCES:
patent: 3401135 (1968-09-01), Sato
patent: 3931088 (1976-01-01), Sakurada
patent: 4298511 (1981-11-01), Schimmel

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