| abstract |
A silicone compound of the rational formula: (see fig.I) wherein R1 and R2 are independently a hydrogen atom or a hydrocarbon radical free from acetylenic unsaturation; Z is -O-, -S- or -NH-; Y is a divalent organic group; R3 is a hydrogen atom, an alkyl, alkenyl, alkoxy or phenyl group; and m and n are rational numbers satisfy the ration of 4>m+n~2. The compound is useful as a precursor of nonemanating, self-curing and heat resistant silicone resins. |