C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 63/02 (2006.01) A61K 8/88 (2006.01) A61Q 13/00 (2006.01) A61Q 17/00 (2006.01) A61Q 17/02 (2006.01) A61Q 17/04 (2006.01) A61Q 19/00 (2006.01) B01J 13/00 (2006.01) C08F 283/04 (2006.01) C08G 63/44 (2006.01) C08G 69/08 (2006.01) C08G 69/26 (2006.01) C08G 69/34 (2006.01) C08G 69/44 (2006.01) C08G 73/02 (2006.01) C08G 73/06 (2006.01) C08G 73/10 (2006.01) C08G 73/16 (2006.01) C11C 5/00 (2006.01) F23D 3/16 (2006.01)
Patent
CA 2268452
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" equivalent 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 < {x/(y+z)} < 1.1 and 0.1 < {(y+z)} < 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.
Il est possible de mélanger un polyamide à terminaison ester, de faible poids moléculaire, à un hydrocarbure liquide en vue de la formation d'une composition transparente possédant la consistance d'un gel. On prépare ledit polyamide à terminaison ester en faisant réagir "x" équivalents d'acide dicarboxylique, 50 % au moins de ces équivalents provenant d'acide gras polymérisé, "y" équivalents de diamine du type éthylènediamine, et "z" équivalents de monoalcool possédant au moins 4 atomes de carbone. La stoechiométrie du mélange réactionnel satisfait les relations: 0,9 < [x/(y+z)] < 1,1 et 0,1 < [(y+z)] < 0,7. On chauffe les réactifs jusqu'à ce qu'ils atteignent l'équilibre réactionnel. Ledit gel (Fig.1) contient environ de 5 à 50 % de polyamide à terminaison ester, le reste étant de préférence constitué d'hydrocarbure pur. Ces gels sont utiles à la formulation de produits de soins personnels et d'autres articles qui doivent présenter, de préférence, une certaine consistance ou l'aspect d'un gel.
Macqueen Richard C.
Pavlin Mark S.
Arizona Chemical Company
Gowling Lafleur Henderson Llp
Union Camp Corporation
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