Polymeric compositions

Details Polymeric compositions Polymeric compositions

1985-08-15

1987-06-30

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...

524555, 524558, C08L 3314

Patent

active

046771522

ABSTRACT:
A polymer of an ethylenically unsaturated monomer containing a pendant hydrophobic group and, optionally, other monomers such as (meth) acrylic acid, ethyl acrylate or acrylamide is provided as a stable, substantially anhydrous dispersion containing at least 40% by weight of the polymer in a continuous phase of a non-aqueous liquid. The polymer in the dispersion generally includes acid groups and is neutralized, preferably with ammonia or a volatile amine. The dispersion can be made by reverse phase polymerization of an aqueous blend of monomers, followed by dehydration, or by making the polymer from a water insoluble blend of monomers by oil in water emulsion polymerization, dispersing the resultant oil in water emulsion into the non-aqueous liquid, and then dehydrating. The monomer including the hydrophobic group is preferably an allyl ether.

REFERENCES:
patent: 3331801 (1967-07-01), Osmond
patent: 3532663 (1970-10-01), Nicks
patent: 3925295 (1975-12-01), Osborn
patent: 3997488 (1976-12-01), Tsubuko

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