Surface active composition
AssigneeRhone-Poulenc Inc.
InventorJean Dumoulin
Life of this patent
Estimating the term…
Abstract
A surface active composition which comprises by weight: A. 45 to 90% of at least one n-alkyl monoether of a polyethylene glycol, containing 4 to 9 --CH.sub.2 CH.sub.2 O-- units, the n-alkyl radicals containing 5 to 15 carbon atoms, B. 5 to 35% of a sodium dialkylsulphosuccinate, the linear or branched alkyl radicals containing 6 to 12 carbon atoms, C. 2 to 17% of at least one acid selected from oleic, linoleic, linolenic and ricinoleic acid and D. 1.5 to 12% of at least one amine selected from triethanolamine and N-hydroxyethylmorpholine; Is used as an emulsifier with diorganopolysiloxanes to form transparent micro-emulsions or transparent gels or to introduce silane cross-linking agents into catalyzed aqueous polysiloxane emulsions to cross-link the emulsion.
Claims13
A process for preparing a transparent aqueous micro-emulsion or transparent gel in which a surface active composition and an organo-silicon compound are mixed together and the resulting mixture introduced into an aqueous medium wherein the surface active composition comprises by weight:
- p1 a. 45 to 90% of at least one n-alkyl monoether of a polyethylene glycol, containing 4 to 9 --CH.sub.2 CH.sub.2 O-- units, the n-alkyl radicals containing 5 to 15 carbon atoms,
- b. 5 to 35% of a sodium dialkylsulphosuccinate, the linear or branched alkyl radicals containing 6 to 12 carbon atoms,
- c. 2 to 17% of at least one acid selected from the group consisting of oleic, linoleic, linolenic and ricinoleic acid, and
- d. 1.5 to 12% of at least one amine selected from the group consisting of triethanolamine and N-hydroxyethylmorpholine,
- and wherein the organosilicon compound is a monomer of the formula R.sub.4 Si or R.sub.3 SiO.sub.a SiR.sub.3 or an organopolysiloxane polymer having 0.8 to 2.6 organic groups per silicon atom and formed of units selected from the group consisting of R.sub.3 SiO.sub.0.5, R.sub.2 SiO, RSiO.sub.1.5, SiO.sub.2 and O.sub.3-b R.sub.b/2 SiQ.sub.a SiR.sub.b O.sub.3-b/2 in which R represents a monovalent organic group containing 1 to 20 carbon atoms, Q represents a divalent hydrocarbon radical having 1 to 12 carbon atoms, a is 0 or 1 and b is 0, 1 or 2,
- the organosilicon compound forming 0.05 to 15% by weight of the emulsion or gel and the mixture of the surface active composition and the organo-silicon compound forming at most 60% of the weight of the emulsion or gel.
In a process for introducing an organosilicon compound into a preformed aqueous emulsion in which the organosilicon compound is a monomer of formula R.sub.4 Si or R.sub.3 SiQ.sub.a SiR.sub.3 or an organopolysiloxane polymer having 0.8 to 2.6 organic groups per silicon atom and formed of units selected from the group consisting of R.sub.3 SiO.sub.0.5, R.sub.2 SiO, RSiO.sub.1.5, SiO.sub.2 and O.sub.3-b/2 R.sub.b SiQ.sub.a SiR.sub.b O.sub.3-b/2 in which R represents a monovalent organic group containing 1 to 20 carbon atoms, Q represents a divalent hydrocarbon radical having 1 to 12 carbon atoms, a is 0 or 1 and b is 0, 1 or 2, the improvement which comprises mixing the organosilicon compound with a surface active composition comprising by weight:
- a. 45 to 90% at least one n-alkyl monoether of a polyethylene glycol, containing 4 to 9 --CH.sub.2 CH.sub.2 O-- units, the n-alkyl radicals containing 5 to 15 carbon atoms,
- b. 5 to 35% of a sodium dialkylsulphosuccinate, the linear or branched alkyl radicals containing 6 to 12 carbon atoms,
- c. 2 to 17% of at least one acid selected from oleic, linoleic, linolenic and ricinoleic acid and
- d. 1.5 to 12% of at least one amine selected from triethanolamine and N-hydroxyethylmorpholine, and introducing the resulting mixture into the preformed aqueous emulsion, the organsilicon compound being used in amounts such that the final mixture contains 0.02 to 13% by weight of the organosilicon compound, and at most 25% by weight of the mixture of the surface active composition and the organo silicon compound.
Dependencies are inferred from the claim text.