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US 5,183,589 AGranted
Stable emulsions of perfluoropolyethers
AssigneeAusimont S.p.A.
InventorsFabio Brunetta, Giovanni Pantini
Life of this patent
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Abstract
Stable diphase emulsions consisting of: a) perfluoropolyethers having perfluoroalkyl end groups; b) a conventional surfactant, dispersed in c) a continuous dispersing phase consisting of glycerol or of a polyhydroxylated compound containing at least three hydroxyl groups, selected from polyalcohols and saccharides, dissolved in a hydrophile solvent and/or water.
Claims12
Stable emulsions of perfluoropolyethers having perfluoroalkyl end groups, consisting of:
- a) from 0.1 to 75% by weight of a perfluoropolyether;
- b) from 0.01% to 5% of a surfactant;
- and
- c) from 20% to 99.89% of glycerol.
1 more element
Stable emulsions of perfluoropolyethers having perfluoroalkyl end groups, consisting of:
- a) from 0.01% to 50% by weight of a perfluoropolyether;
- b) from 0.01% to 5% of a surfactant;
- and
- c) from 45% to 99.98% of a solution in a hydrophilic solvent of a polyhydroxylated compound selected from the group consisting of polyalcohols other than glycerine and the saccharides containing at least three hydroxylic groups, said hydrophilic solvent being selected from the group consisting of glycols, glycerol, lower alcohols, ethers, diglymes and mixtures thereof.
1 more element
Dependencies are inferred from the claim text.