Polyamide ester rheological additive, a solution containing the additive and thickened compositions containing the additive
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United States of America Patent
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Sep 20, 1994
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app pub date -
Jul 30, 1993
filing date -
Aug 16, 1991
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Abstract
A polyamide (or oligomeric amide) ester rheological additive especially for organic solvent-based compositions comprises the reaction product of a defined polycarboxylic acid, a diamine, an alkoxylated polyol and a capping agent. The additive exhibits excellent efficiency and ease of dispersibility and is especially effective when first predispersed in an organic solvent. Organic solvent-based compositions which may be thickened by using the rheological additive are aliphatic, aromatic, and some moderately polar solvent-based compositions.
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