Surfactants for improving the gel properties of clay minerals in coating compositions
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United States of America Patent
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Jun 25, 1996
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N/A
app pub date -
Jun 8, 1995
filing date -
Jun 8, 1995
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Abstract
This invention is to surfactant compositions which are organic salts of a polyamine and a carboxylic acid. The polyamine has the structure: ##STR1## wherein R is (i) alkyl or alkenyl containing from about 10 to about 22 carbon atoms or (i) R'--O--CH2CH2CH2-- wherein R' is alkyl containing from about 8 to about 22 carbon atoms; A is a divalent hydrocarbyl group containing about 2 to about 6 carbon atoms; and n is an integer from about 1 to about 3. The carboxylic acid has the structure: R'--COOH wherein R' is alkyl or alkenyl containing about 6 to about 22 carbon atoms. The surfactants may contain polar activators. This invention is also to compositions containing asphalt, a clay mineral, and the above described surfactant.
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