e 4 allyl 2 methoxyphenol other phenol compounds which may be employed include vinylphenol vinyl guaiacol and 4 allylphenol in silicone c the phenolic r 4 groups are advantageously present relative to the polyhydric r 2 groups in a ratio of from about 0 05 to about 0 7 desirably about 0 1 to about 0 4 in silicone c polyether r 3 groups are advantageously present relative to the polyhydric r 2 groups in a ratio r 3 r 2 of from about 0 25 to about 5 an unsaturated alcohol or polyol can be reacted to form esters ethers acetals or ketals in accordance with well known reactions and derivative thereof hydrosilated in like manner to form groups r 5 if desired for instance an unsaturated diol can be transformed into a corresponding cyclic formal via reaction with formaldehyde and the resulting cyclic olefins can be grafted onto the siloxane backbone by hydrosilation alternatively a polyorganosiloxane having polyhydric groups r 2 may have a selected portion of the polyhydric groups converted into diester diether acetal or ketal derivatives using such well known reactions in order to fine tune the solubility parameters of the silicone a or c silicones a or c having r 3 r 4 and or r 5 groups in addition to r 1 and r 2 groups may be prepared by hydrosilation of a mixture of unsaturated polyhydric compounds with unsaturated polyether and or unsaturated phenol compounds a sequential hydrosilation process in which the different unsaturated compounds are sequentially added to silicone having an excess of sih groups relative to each of the unsaturated compounds individually may also be employed an.