Method of preparing and improved liquid gelling agent concentrat

Details Method of preparing and improved liquid gelling agent concentrat Method of preparing and improved liquid gelling agent concentrat

1992-11-05

1994-01-11

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

106169, 106178, 106205, 523205, 524 35, 524 44, 524 45, 524 55, 536 52, 536 91, 536 96, C08K 904, C08L 126, C08L 3308, C09K 700

Patent

active

052782034

ABSTRACT:
Water-soluble, polymer viscosifiers of aqueous solutions, also known as gelling agents, can be suspended in a hydrocarbon carrier fluid, such as, diesel to prepare a liquid gel concentrate. When a liquid gel concentrate is added to an aqueous solution the gelling agent disperses into it and viscosifies it. To make an improved performance admixture for preparation of liquid gel concentrates and render the gelling agent suspendable in the hydrocarbon carrier fluid, it is first coated with a mixture of an oil-compatible polymer suspending agent, such as a polymer suspension, comprising a branched chain alkyl acrylate monomer copolymerized with a minor amount of hydrophilic monomer such as acrylic acid with an appropriate amount of internal crosslinking agent to control polymer particle size, and a surfactant such as a nonylphenol reacted with several moles of ethylene oxide, styrenated phenol ethoxylate, or a phosphate ester of styrenated phenol ethoxylate. The treated viscosifier may be dried, if desired, and packaged. The admixture subsequently may be admixed with a hydrocarbon carrier fluid, making a time stable liquid gel concentrate that was easily prepared. The liquid gel concentrate can then be used to viscosify aqueous solutions for such uses as frac fluids or drilling muds.

REFERENCES:
patent: 3242120 (1966-03-01), Steuber
patent: 4542171 (1985-09-01), Elser et al.
patent: 4737533 (1988-04-01), Charmot et al.
patent: 4771086 (1988-09-01), Martin
patent: 5091448 (1992-02-01), Hostettler et al.
patent: 5171764 (1992-12-01), Katayawa et al.

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