Ester-terminated polyamides of polymerized fatty acids useful in

Details Ester-terminated polyamides of polymerized fatty acids useful in Ester-terminated polyamides of polymerized fatty acids useful in

1998-05-06

1999-12-07

Hampton-Hightower, P.

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

Synthetic resins

From carboxylic acid or derivative thereof

528272, 528288, 528292, 528302, 528324, 528326, 528339, 44275, 252522A, 524219, 524606, 525411, 5254205, 525425, 525434, 431288, C08G 6300, C08L 6700, C08L 7700

Patent

active

059985704

ABSTRACT:
A low molecular weight, ester-terminated polyamide may be blended with a liquid hydrocarbon to form a transparent composition having gel consistency. The ester-terminated polyamide is prepared by reacting "x" equivalents of dicarboxylic acid wherein at least 50% of those equivalents are from polymerized fatty acid, "y" equivalents of diamine such as ethylene diamine, and "z" equivalents of monoalcohol having at least 4 carbon atoms. The stoichiometry of the reaction mixture is such that 0.9.ltoreq.{x/(y+z)}.ltoreq.1.1 and 0.1.ltoreq.{z/(y+z)}.ltoreq.0.7. The reactants are heated until they reach reaction equilibrium. The gel contains about 5-50% ester-terminated polyamide with the remainder preferably being pure hydrocarbon. The gels are useful in formulating personal care products and other articles wherein some degree of gel-like or self-supporting consistency is desired.

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