Method and siloxane composition for treating fibers
AssigneeToray Silicone Company, Ltd.
InventorsIsao Ona, Masaru Ozaki
Life of this patent
Estimating the term…
Abstract
An aqueous emulsion comprising an aminoorgano-substituted organopolysiloxane fluid, a silane which bears a hydrophilic group, one or more surfactants and water are useful for treating fibers, such as thread, yard and textiles. When applied to a fiber and heated the composition undergoes a curing reaction and durably imparts desirable properties, such as excellent hand and moisture absorbability, to the fiber.
Claims7
An emulsion composition obtained by mixing components consisting essentially of (a) 100 parts by weight of an organopolysiloxane having a viscosity at 25.degree. C. of at least 10 centistokes and having the general formula ##STR6## wherein R represents a monovalent hydrocarbon or halogenated hydrocarbon group having from 1 to 20 carbon atoms, R.sup.1 represents a hydrogen atom or a monovalent hydrocarbon group, m and n are integers each with a value .gtoreq. 1, A represents a hydroxyl group or an alkoxy group having from 1 to 5 carbon atoms, Q represents a divalent hydrocarbon group and a is an integer with a value of 0 to 5, (b) 1 to 100 parts by weight of a silane having the general formula (R.sup.2).sub.3 Si--Z--O--R.sup.3, wherein R.sup.2 represents an alkoxy or alkoxyalkoxy group having from 1 to 5 carbon atoms, Z represents a divalent hydrocarbon group and R.sup.3 represents a hydrogen atom, a hydroxyl group-containing alkyl group or a polyoxyalkylene group or a partial hydrolysis condensate of said silane, (c) 1 to 30 parts by weight of a surfactant selected from the group consisting of nonionic and cationic surfactants and (d) an emulsion-forming quantity of water.
A method comprising (I) forming an emulsion composition by mixing components consisting essentially of (a) 100 parts by weight of an organopolysiloxane having a viscosity at 25.degree. C. of at least 10 centistokes and having the general formula ##STR8## wherein R represents a monovalent hydrocarbon or halogenated group having from 1 to 20 carbon atoms, R.sup.1 represents a hydrogen atom or a monovalent hydrocarbon group, m and n are integers each with a value .gtoreq. 1, A represents a hydroxyl group or an alkoxy group having from 1 to 5 carbon atoms, Q represents a divalent hydrocarbon group and a is an integer with a value of 0 to 5, (b) 1 to 100 parts by weight of a silane having the general formula (R.sup.2).sub.3 Si--Z--O--R.sup.3, wherein R.sup.2 represents an alkoxy or alkoxyalkoxy group having from 1 to 5 carbon atoms, Z represents a divalent hydrocarbon group and R.sup.3 represents a hydrogen atom, a hydroxyl group-containing alkyl group or a polyoxyalkylene group or a partial hydrolysis condensate of said silane, (c) 1 to 30 parts by weight of a surfactant selected from the group consisting of nonionic and cationic surfactants and (d) an emulsion-forming quantity of water, (II) applying the emulsion composition onto a fiber material and (III) heating the applied emulsion composition sufficiently to accelerate a crosslinking reaction between component (a) and component (b).
Dependencies are inferred from the claim text.