Process for making fibrous material water repellent
AssigneeCiba-Geigy Corporation
InventorsHans Deiner, Willy Bernheim
Life of this patent
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Abstract
Process for making fibrous material water repellent by treating it with an aqueous bath containing (A) an emulsified organo polysiloxane with at least 2 hydroxyl groups optionally modified in a manner able to cross-link, (B) a non-ionic emulsion of poly silicic acid ester, (C) a reaction product which has been obtained by reaction of an organic compound containing at least one halohydrin and/or epoxy group with an organic compound containing hydrogen atoms bound to nitrogen, which in form of its salt is water-soluble or at least water-dispersible. The treated material is dried and optionally cured.
Claims8
A process for making fibrous material water-repellent, which comprises treating the fibrous material with an aqueous bath containing
- (A) an emulsified organopolysiloxane with at least 2 modified or unmodified, crosslinkable, hydroxyl groups,
- (B) an emulsion of a polysilicic acid ester of a monovalent alcohol with 1 to 4 carbon atoms, which has been emulsified by the aid of a non-ionic emulsifier, and shows a pH-value of 5 to 7.5, and
- (C) a reaction product of an organic compound containing at least one halohydrin group or epoxy group or both and an organic compound containing hydrogen atoms bound to nitrogen, which reaction product is water-soluble or at least water-dispersible when in form of its salt.
Dependencies are inferred from the claim text.