Sulfolanyl-bearing organosilicone polymers

Details Sulfolanyl-bearing organosilicone polymers Sulfolanyl-bearing organosilicone polymers

1975-06-30

1977-09-20

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603323R, 2604482S, 2604482H, 2604482N, 260 25AH, C07D33348, C08J 900

Patent

active

040496740

ABSTRACT:
A particular class of sulfolanyloxyalkyl-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 sulfolanyloxyalkyl 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 sulfolanyloxyalkyl-substituted polyalkylsiloxane hydrides and, when E.degree. is E, the polymers are sulfolanyloxyalkyl-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 sulfolanyloxyalkyl-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 including urethane foam containing a flame-retardant.

REFERENCES:
patent: 2833801 (1958-05-01), Holbrook
patent: 3325439 (1967-06-01), Steinbach
patent: 3457290 (1969-07-01), Selin
patent: 3846462 (1974-11-01), Prokai et al.
Cooper, G.D., "Journal of Amer. Chem. Soc." vol. 76, pp. 3713-3716, (1954).

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