초록 ▼

Fibrous substrates are durably modified by applying a polyoxyethylene-containing silane to the substrate and heating the substrate to cure the silane. Durability of the treatment is achieved by using a silane having the formula R(OCH2CH2)xOR′SR″SiZ3 where Z denotes a hydroxyl or a hydrolyzable radic

Fibrous substrates are durably modified by applying a polyoxyethylene-containing silane to the substrate and heating the substrate to cure the silane. Durability of the treatment is achieved by using a silane having the formula R(OCH2CH2)xOR′SR″SiZ3 where Z denotes a hydroxyl or a hydrolyzable radical, R′and R″are divalent aliphatic radicals of suitable size, R is hydrogen, lower alkyl or lower acyl and x has a value of at least 3. The silane is applied to the fibrous substrate, such as a hydrophobic fabric, as a homogeneous liquid composition comprising the silane, a volatile liquid carrier and a siloxane polymerization catalyst to provide a treated substrate having improved properties, such as hydrophilicity.

대표청구항 ▼

A process for durably modifying a fibrous substrate with a polyoxyethylene-containing silane, said process comprising (A) applying to the fibrous substrate a homogeneous liquid composition obtained by mixing components comprising (i) a volatile liquid carrier, (ii) a siloxane polymerization catalyst

A process for durably modifying a fibrous substrate with a polyoxyethylene-containing silane, said process comprising (A) applying to the fibrous substrate a homogeneous liquid composition obtained by mixing components comprising (i) a volatile liquid carrier, (ii) a siloxane polymerization catalyst and (iii) a polyoxyethylene-containing silane having the formula R(OCH2CH2)xOR′SR″SiZ3 wherein R denotes a monovalent terminating radical selected from the group consisting of hydrogen, lower alkyl and lower acyl, R′and R″each denote, independently, a divalent aliphatic radical having from 1 to 6 carbon atoms, the total number of carbon atoms in R′and R″intervening between Si and O being at least 3, each Z denotes a hydrolyzable radical or a hydroxyl radical and x has an average value of at least 3, and (B) heating the applied homogeneous liquid composition to remove any volatile liquid carrier therefrom and to cure the polyoxyethylene-containing silane. As an article of manufacture a fibrous substrate having durably affixed thereto a polyoxyethylene-containing siloxane polymer having the unit formula [Figure] wherein R denotes a monovalent terminating radical selected from the group consisting of hydrogen, lower alkyl and lower acyl, R′and R″each denote, independently, a divalent aliphatic radical having from 1 to 6 carbon atoms, the total number of carbon atoms in R′and R″intervening between Si and O being at least 3, each Z denotes a hydrolyzable radical or a hydroxyl radical, x has an average value of at least 3 and a has an average value of less than 3.