Organopolysiloxanes having Si-bonded hydrogen and SiC-bonded epo

Details Organopolysiloxanes having Si-bonded hydrogen and SiC-bonded epo Organopolysiloxanes having Si-bonded hydrogen and SiC-bonded epo

1986-07-14

1987-05-19

Marquis, Melvyn I.

Coating processes

With post-treatment of coating or coating material

Heating or drying

427387, 427180, 428447, 524506, 524588, 525100, 525101, 525104, 525106, 528 15, 528 27, 528 31, B05D 302

Patent

active

046667458

ABSTRACT:
Novel organopolysiloxanes are described in which the organopolysiloxanes are terminated by units of the formula R.sub.3 SiO.sub.1/2 and comprise units of the formulas RR.sup.1 SiO, RR.sup.2 SiO, RR.sup.3 SiO, RHSiO and R.sub.2 SiO, where R represents the same or different alkyl radicals having from 1 to 4 carbon atoms per radical, or phenyl radicals, R.sup.1 represents the same or different alkyl radicals having at least 6 carbon atoms per radical, R.sup.2 represents the same or different aralkyl radicals and R.sup.3 represents the same or different, SiC-bonded, monovalent organic radicals having at least one vicinal epoxy group per radical. These organopolysiloxanes are preferably prepared by reacting organopolysiloxanes which contain units of the formulas R.sub.3 SiO.sub.1/2 and RHSiO and optionally units of the formula R.sub.2 SiO, wherein R is the same as above, with an organic compound that has a terminal C.dbd.C-bond and at least one vicinal epoxy group per molecule, at least one alkene having at least 6 carbon atoms per molecule, and at least one aralkene in the presence of a catalyst which promotes the addition of Si-bonded hydrogen to the aliphatic C.dbd.C bond. These organopolysiloxanes may be applied simultaneously with a polymer having perfluoroalkyl groups with at least 3 carbon atoms per alkyl group to fibers to render them oil and water repellent.

REFERENCES:
patent: 2803615 (1957-08-01), Ahlbrecht et al.
patent: 4004059 (1977-01-01), Deiner et al.
patent: 4046930 (1977-09-01), Johnson et al.

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