Chemically stable stiff backbone polymers as mobility control ag

Details Chemically stable stiff backbone polymers as mobility control ag Chemically stable stiff backbone polymers as mobility control ag

1982-09-29

1986-03-18

Lee, Lester L.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

252 855D, 525535, 528172, 528174, 528175, 528210, 528212, 528215, 528216, C08G 6548, C08G 7520, C08G 7523

Patent

active

045770000

ABSTRACT:
Certain water-soluble polymers retain their viscosities in high brine environments and are highly useful as surfactant-mobility control agents in oil recovery processes. These polymers have stiff backbone chains which are poly-2,6-dimethyl-p-phenylene oxide, polysulfone or poly(p-phenylene ether-sulfone) and side chains which may be formed by halomethylating phenyl rings of these backbone chains followed by quaternizing the halomethyl groups. For more thickening power, the molecular weight of the polymer can be increased by controlled cross-linking with a calculated amount of difunctional amine.

REFERENCES:
patent: 3481885 (1969-12-01), Radlmann et al.
patent: 4058504 (1977-11-01), Yonemitsu et al.
patent: 4156771 (1979-05-01), Loucks et al.

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