Aqueous organopolysiloxane emulsiers and a process for treating

Details Aqueous organopolysiloxane emulsiers and a process for treating Aqueous organopolysiloxane emulsiers and a process for treating

1982-02-08

1984-03-13

Pertilla, Theodore E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

10628711, 10628712, 10628713, 10628714, 428391, 428447, 524588, 524261, 524838, 525478, C08L 8304

Patent

active

044368569

ABSTRACT:
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 organopolysiloxane 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 diorganopolysiloxane (6) is increased in the emulsion, the hydrophobic properties of the impregnated fibers increases.

REFERENCES:
patent: 4098701 (1978-07-01), Burrill et al.
patent: 4167501 (1979-09-01), Rooks

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