Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1980-01-23
1981-09-22
Marquis, Melvyn I.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
260 18S, 428438, 428439, 428443, 428447, 428449, 428452, 428523, 428526, 528 17, 528 18, 528 30, 528 32, 528901, C08F 246
Patent
active
042908698
ABSTRACT:
Photopolymerizable, liquid, storage stable organopolysiloxanes having viscosities of from 60 mPa.s to 2,000 mPa.s at 25.degree. C., are prepared by reacting (i) an .alpha.,.omega.-dihydroxydiorganopolysiloxane oil having a viscosity ranging from about 70 to 500 mPa.s at 25.degree. C., with (ii) a silane having the formula Z(G)SiR.sub.a (Q).sub.3-a wherein Z is CH.sub.2 .dbd.C(R')--COO-- or HS--, and further wherein the symbols R, which may be the same or different, are methyl, ethyl, n-propyl, vinyl or phenyl, R' is hydrogen or methyl, the symbols Q, which may be the same or different, are methoxy, ethoxy, n-propoxy, .beta.-methoxyethoxy and, when any two are taken together, the divalent radical --O--(CH.sub.3).sub.2 --C(CH.sub.3).sub.2 --O--, G is a linear or branched chain alkylene radical having from 1 to 8 carbons, and a is a number ranging from 0 to 2; and with the molar ratio of the hydroxyl functions comprising the oil (i) to the Q radicals comprising the silane (ii) ranging from 0.1 to 0.95. Such organopolysiloxanes are useful, e.g., release coating compositions.
REFERENCES:
patent: 3714089 (1973-01-01), Hamilton et al.
patent: 3816282 (1974-06-01), Viventi
patent: 4039504 (1977-08-01), Homan et al.
patent: 4039505 (1977-08-01), Homan et al.
patent: 4064027 (1977-12-01), Gant
patent: 4066603 (1978-01-01), Homan et al.
patent: 4070526 (1978-01-01), Colquhoun et al.
patent: 4208471 (1980-06-01), Bresak et al.
Marquis Melvyn I.
Rhone-Poulenc Industries
LandOfFree
Photopolymerizable organopolysiloxane/silane compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photopolymerizable organopolysiloxane/silane compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photopolymerizable organopolysiloxane/silane compositions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-333903