Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1975-12-29
1977-03-29
Jacobs, Lewis T.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 465R, 2604482B, 2604482H, C08J 900
Patent
active
040148254
ABSTRACT:
A particular class of tertiary alcohol substituted organosilicone polymers are provided which comprise chemically combined monofunctional siloxy units (M.sub.o) and difunctional siloxy units (D.sub.o) and, for every two moles of M.sub.o, an average of from about two to about 100 silicon-bonded tertiary alcohol groups (Q) and an average of from about 2 to about 30 silicon-bonded E.degree. groups where E.degree. is hydrogen or a polyoxyalkylene block (E). When E.degree. is hydrogen, the polymers are tertiary alcohol-substituted polyalkylsiloxane hydrides and, when E.degree. is E, the polymers are tertiary alcohol-substituted polyalkylsiloxane-polyoxyalkylene copolymers. The monofunctional siloxy units encompassed by M.sub.o have at least two alkyls bonded to the respective silicon atoms thereof and the difunctional siloxy units encompassed by D.sub.o have at least one alkyl bonded to the respective silicon atoms thereof, the remaining group bonded to silicon of said M.sub.o and D.sub.o units being alkyl, Q or E.degree.. The tertiary alcohol-modified polyalkylsiloxane hydrides are especially useful as hydrosilation and condensation agents such as in forming the correspondingly modified polyalkylsiloxane-polyoxyalkylene copolymers of the invention. The copolymers in turn find particular application in the manufacture of cellular urethane products.
REFERENCES:
patent: 3563924 (1971-02-01), Schwarz
patent: 3842112 (1974-10-01), Omietanski et al.
patent: 3879433 (1975-04-01), Omietanski et al.
patent: 3882055 (1975-05-01), Koerner et al.
Finnegan Reynold J.
Jacobs Lewis T.
Union Carbide Corporation
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