Microemulsions of aminopolysiloxanes
AssigneeSandoz Ltd.
InventorBernard Danner
Life of this patent
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Abstract
Aqueous microemulsions of protonated aminopolysiloxanes (.alpha.) comprising an amphoteric surfactant (.beta.) and optionally at least one non-ionic emulsifier (.gamma.) and optionally hydrotropics (.delta.) and/or cationic emulsifiers (.eta.) and the pH of which is .ltoreq.7 are suitable as finishing agents of good stability, in particular stability to shearing forces, for the treatment of fibrous material, in particular textile material.
Claims27
A process for finishing a fibrous material which comprises applying, as finishing agent, to said material an aqueous microemulsion of an aminopolysiloxane (.alpha.) which is at least in part in protonated form, said microemulsion comprising 5 to 60 parts by weight of an amphoteric surfactant (13) for every 100 parts by weight of (.alpha.), and having a pH <7.
A process for the production of a microemulsion comprising an aminopolysiloxane (.alpha.) and an amphoteric surfactant (.beta.), and having a pH .ltoreq.7, comprising mixing the microemulsion components with an acid (.epsilon.) wherein the acid (.epsilon.) is added before, together with and/or after the addition of (.alpha.).
Dependencies are inferred from the claim text.