Process for impregnating organic fibers

Details Process for impregnating organic fibers Process for impregnating organic fibers

D - Textiles, Paper

06

M

8/93.21

D06M 15/643 (2006.01) C08L 83/04 (2006.01)

Patent

CA 1193805

A PROCESS FOR IMPREGNATING ORGANIC FIBERS Abstract of the Disclosure Organic fibers are impregnated with an aqueous emulsion comprising (1) an organopolysiloxane containing diorganosiloxane units in which both organic radicals are monovalent hydrocarbon radicals, and further contains at least two monovalent SiC- bonded organic radicals with a basic nitrogen atom per molecule in which the SiC-bonded organic radicals with a basic nitrogen are present in monoorganosiloxane units, (2) an organopoly- siloxane having at least 3 Si-bonded hydrogen atoms per molecule, (3) a catalyst for the condensation of Si-bonded condensable groups (4) emulsifiers, and (5) a diorganopolysiloxane containing an Si-bonded hydroxyl group in each of its terminal units and whose radicals are free of the basic nitrogen atom. If it is desired to impart hydrophobic properties to the impregnated organic fibers, then it is essential that (6) a trimethylsiloxy end-blocked diorganopolysiloxane be added to the aqueous emulsion. Moreover, as the amount of trimethylsiloxy end-blocked diorgano- polysiloxane (6) is increased in the emulsion, the hydrophobic properties of the impregnated fibers increases. When the aqueous emulsion is applied to keratin, especially wool, it prevents or reduces shrinkage due to felting, particularly when the keratin has been pretreated with chlorine, rinsed and neutralized.

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