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National Starch and Chemical Investment Holding Corporation

Nina Nguyen

Daniel B Solarek

John M Swazey

C Bryan Skaggs

Thomas R Sifferman

Jeffrey G Atkinson

Joseph Wieczorek, Jr

Charles W Cline

Selectively cross-linked starches are disclosed that are useful as fluid loss control additives in subterranean treatment fluids comprising starches that cross-linked to a Brabender peak viscosity of about 800 to about 1250 Brabender units after about 40 to about 70 minutes at about 92&deg; C. and provide good fluid loss control over a temperature range of from about 20&deg; C. to about 160&deg; C. (68&deg; F. to 320&deg; F.).

Method of controlling loss of a subterranean treatment fluid

Selectively cross-linked starches are disclosed that are useful as fluid loss control additives in subterranean treatment fluids comprising starches that are cross-linked to a Brabender peak viscosity of about 800 to about 1250 Brabender units after about 40 to about 70 minutes at about 92&deg; C. and provide good fluid loss control over a temperature range of from about 20&deg; C. to about 160&deg; C. (68&deg; F. to 320&deg; F.).

Fluid loss control additives and subterranean treatment fluids containing the same

An aqueous water resistant, viscosity stable adhesive composition for use in paper bonding applications comprising a hydrophobically modified fluidity corn starch having a water fluidity of about 60 to 80 and a solids content of about 8 to 40%. The starch having the formula ##STR1## wherein R is a dimethylene or trimethylene group, R' is a hydrocarbon group having 5-12 carbon atoms and Y is H, alkali metal, alkaline earth metal or ammonium.

Starch-based, water resistant adhesives

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Middlesex, NJ, United States of America

Nina Nguyen