Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Patent
1978-12-11
1980-10-28
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
528 14, 528 18, 528 21, 528 23, 528 30, 528 33, 528 37, 556427, 556429, C08G 7706
Patent
active
042308160
ABSTRACT:
The invention relates to a process for preparing thiofunctional polysiloxane polymers which comprises equilibrating in the presence of an acid catalyst a mixutre containing (1) an organopolysiloxane having at least four silicon atoms per molecule and (2) a thiofunctional polysiloxane copolymer having at least one unit of the formula ##EQU1## and the other units are selected from the formulas R.sub.2 SiO, R.sub.3 SiO.sub.0.5, and RO.sub.0.5, wherein R is a monovalent hydrocarbon radical having from 1 to 18 carbon atoms, R' is a substituted or unsubstituted divalent, trivalent or tetravalent hydrocarbon radical free of aliphatic unsaturation having from 1 to 18 carbon atoms, hydrocarbon ether, hydrocarbon thioether, hydrocarbon ester and hydrocarbon thioester radicals, R" is a monovalent hydrocarbon radical or hydrogen, f is a number of from 1 to 3, g is a number of from 0 to 1 and the sum of f+g is from 1 to 3 and y is a number of from 1 to 3.
REFERENCES:
patent: 3388144 (1968-06-01), Musolf et al.
patent: 3655713 (1972-04-01), LeGrow
patent: 3873499 (1975-03-01), Michael et al.
patent: 4046795 (1977-09-01), Martin
patent: 4066603 (1978-01-01), Homan et al.
patent: 4151156 (1979-04-01), Itoh et al.
Marquis Melvyn I.
SWS Silicones Corporation
LandOfFree
Thiofunctional polysiloxane polymers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thiofunctional polysiloxane polymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thiofunctional polysiloxane polymers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-268915