Oil and water repellent fibrous materials and their formation

Details Oil and water repellent fibrous materials and their formation Oil and water repellent fibrous materials and their formation

D - Textiles, Paper

06

M

117/186

D06M 15/643 (2006.01) D06M 15/277 (2006.01)

Patent

CA 1036435

A B S T R A C T While good oil-repellency can be imparted to fibre materials by treating them with polymers containing perfluoralkyl groups, it is difficult to impart water-repellency to the fibre materials at the same time and also give the treated materials good handling qualities of, for example, moisture content and texture. This is achieved by treating the fibre material with, besides the perfluoralkyl group-containing polymers, an addition product of a) an unsaturated compound which is an olefin, a vinyl or allyl ester of an aliphatic straight or branched chain acid, a vinyl ether whose alkyl radical has at least 4 carbon atoms, an allyl ether whose alkyl radical has at least 4 carbon atoms and/or a vinyl halide with b) an organopolysiloxane which contains hydrogen atoms bonded to silicon atoms, the addition product con- taining on average more than 7 carbon atoms in the alkyl radical and at least 0.20 mole of the unsaturated compound component a) per gram atom of hydrogen in the siloxane component b).

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