Organophilic modified polymers
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United States of America Patent
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Sep 5, 1989
Issued Date -
N/A
app pub date -
Feb 29, 1988
filing date -
Jul 21, 1986
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Expired
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Abstract
Organophilic polymer adducts which are effective fluid loss control additives for oil base well-working fluids are prepared from an anionic or cationic water soluble polymer and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vegetable oils, most preferably commercial lecithin. Preferred polymers comprise polysaccharides or derivatives thereof and synthetic polymers.
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