Water soluble polymers

Details Water soluble polymers Water soluble polymers

1987-10-26

1990-07-10

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5262922, 526312, C08F 2060

Patent

active

049407635

ABSTRACT:
Water soluble, substantially linear, polymers having single point intrinsic viscosity above about 3 are formed from an ethylenically unsaturated monomer that includes a group --B.sub.n A.sub.m R where A is propoxy or butoxy, B is ethoxy, n is zero or an integer of 2 to 100 and m is zero or an integer less than n, and R is a hydrophobic group of at least 8 carbon atoms and comonomer selected from non-ionic monomers and dialkylamino alkyl (meth) -acrylates or -acrylamides wherein at least one of the monomers is tertiary amine acid addition or quaternary ammonium salt. The resultant water soluble, high molecular weight, cationic polymers are useful as flocculants and as viscosifiers of aqueous acid solutions such as downhole acid stimulation fluids.

REFERENCES:
patent: 3520970 (1970-07-01), Lehmann et al.
patent: 3678098 (1972-07-01), Lewis et al.
patent: 4396752 (1983-08-01), Cabestony et al.

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