Alkyldiphenyl ether-sulphonic acid hydrazides, their...

Details Alkyldiphenyl ether-sulphonic acid hydrazides, their... Alkyldiphenyl ether-sulphonic acid hydrazides, their...

C - Chemistry, Metallurgy

08

J

403/84, 260/541.

C08J 9/10 (2006.01) C07C 143/825 (1980.01)

Patent

CA 1153390

ABSTRACT OF THE DISCLOSURE A di- or tri-sulphonic acid hydrazide of an alkylated diphenyl ether, said hydrazide being of the formula Image (I) wherein R1 and R2 are identical or different and represent halogen or a lower alkyl radical and R1 and R2 can denote hydrogen, R3 denotes a lower alkyl radical and n represents the number 1 or 2. A process for the preparation of such hydrazides and the use of such hydrazides as chemical blowing agents in the production of foams from foamable compositions, espscially rubbers and thermoplastic resins.

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