C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 213/06 (2006.01) C07C 219/06 (2006.01) C07C 219/08 (2006.01)
Patent
CA 2256450
Described is a method of preparing quaternary trialkanolamine ester salts or formula (I) in which X- is the anion of an inorganic or organic acid, Ra is a C1-C4 alkyl group; Rb and Rc, independently of each other, are a C1-C3 alkylene group and Rd is a saturated and/or unsaturated aliphatic C1-C22 carboxylic acid group, m, n, p and q are whole numbers, m being 1 to 3, n being 0 to 3, p being 0 to 1, m+n+p being equal to 4 and q being 1 or, when m = 3, n = 0 and p = 1, q is 2. The method calls for a quaternary compound of formula (II), in which X-, Ra, Rb, Rc, m, n, p and q are as defined above, to be esterified, in the presence of an oxyacid of phosphorus and/or one of its alkali-metal or alkaline-earth salts as a catalyst, with a saturated and/or unsaturated aliphatic C1-C22 carboxylic acid individually or in a mixture, the water formed being removed from the reaction mixture.
L'invention concerne un procédé de préparation de composés quaternaires d'esters de la formule (I) dans laquelle X?-¿ désigne un anion d'un acide inorganique ou organique, R¿a? désigne un groupe alkyle C¿1?-C¿4?, R¿b? et R¿c? désignent indépendamment l'un de l'autre un groupe alkylène C¿1?-C¿3? et R¿d? désigne un reste C¿1?-C¿22? d'un acide carboxylique aliphatique saturé et/ou insaturé, m, n, p et q valent des nombres entiers, m vaut entre 1 et 3, n vaut entre 0 et 3, p vaut entre 0 et 1, m+n+p=a et q vaut 1 ou, si m=3, n=0 et p=1, q vaut alors 2. Selon ce procédé, on estérifie individuellement ou en mélange sous extraction d'eau, un composé quaternaire de la formule (II) dans laquelle X?-¿, R¿a?, R¿b?, R¿c?, m, n, p et q ont la notation mentionnée ci-dessus, en présence d'un acide oxygéné du phosphore et/ou d'un de ses sels alcalins ou alcalino-terreux comme catalyseur avec un acide carboxylique C¿1?-C¿22? saturé et/ou insaturé.
Ahrens Hartmut
Bergfeld Manfred
Carstens Axel
Akzo Nobel N.v.
Akzo Nobel Nv
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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