Emulsion polymer of heterogeneous molecular weight and preparati

Details Emulsion polymer of heterogeneous molecular weight and preparati Emulsion polymer of heterogeneous molecular weight and preparati

1983-05-31

1985-02-26

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...

524458, 526 80, C08F 216

Patent

active

045018456

ABSTRACT:
Disclosed is a polymer and its preparation by reacting part of the monomers in the reactor in such a way as to obtain a high molecular weight product, and reacting at least one other portion of the monomer in the same reactor in such a way as to obtain at least one low molecular weight fraction. The products are useful in contact adhesives, particularly when blended with an aminoplast or phenoplast as a tackifier and crosslinker, and with a thickening agent such as polyvinyl alcohol.

REFERENCES:
patent: 2473929 (1949-06-01), Wilson
patent: 2662866 (1953-12-01), Bristol
patent: 3485808 (1969-12-01), Wiesner
patent: 3547857 (1970-12-01), Murray
patent: 3887610 (1975-06-01), Kober
patent: 4126595 (1978-11-01), Martorano
patent: 4254004 (1981-03-01), Abbey
J. Polymer Science, vol. 46, pp. 75-89, 1960.

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