Polymer suspensions

Details Polymer suspensions Polymer suspensions

1984-05-14

1986-02-18

Guynn, Herbert B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

106208, 252 85C, 252 855R, 252 855D, 2523635, C08B 3700

Patent

active

045714223

ABSTRACT:
Polysaccharide is provided as a fluid composition that is a dispersion of the polysaccharide in oil and that contains a dispersion promoter selected from surfactants and stabilizers. The dispersion is generally a stable flocculated dispersion. It is generally made by dispersing an aqueous polysaccharide solution having a consistency index of about 20,000 cps in oil in the presence of dispersion promoter and then drying the dispersion. The oil generally comprises volatile and non-volatile components such that the drying can be by azeotroping. The dispersion promoters are generally selected from amphiphatic copolymers and surfactants having HLB at 20.degree. C. above 6.5 but which serve as water in oil dispersing agents during the formation of the dispersion. Aqueous solutions of the polysaccharide can be made by dispersing the fluid composition in water. These aqueous solutions are of particular value in methods of enhanced oil recovery.

REFERENCES:
patent: 3979349 (1976-09-01), Fink et al.
patent: 4029622 (1977-06-01), Keller et al.
patent: 4249608 (1981-02-01), Carter
patent: 4312675 (1982-01-01), Pickens et al.
patent: 4325861 (1982-04-01), Braun et al.
patent: 4374216 (1983-02-01), Dammann
patent: 4454260 (1984-06-01), Dawans et al.

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