An organopolysiloxane compound represented by average structural formula (1) is capable of imparting an electron beam curable resin with high antistatic properties, while having excellent antistatic performance durability.

##STR00001##

(In the formula, Z represents a single bond or a group having a functionality of 2-20 and containing an organopolysiloxane structure; R.sup.1 represents a single bond, or an unsubstituted or substituted alkylene group having 1-20 carbon atoms; each of R.sup.2 and R.sup.3 represents an unsubstituted or substituted alkyl group having 1-10 carbon atoms, or the like; Y represents a monovalent hydrocarbon group having a polymerizable reactive group; each of p and q represents a number of 1-10, with (p+q) being 2-20 in accordance with the valence of Z; and in cases where Z represents a single bond, p and q represent 1, A.sup.− represents an anion and Q.sup.+ represents a cationic group that is represented by one of formulae (2)-(4)

##STR00002##

(wherein each one of R.sup.4-R.sup.10 represents an alkyl group having 1-20 carbon atoms, or the like; each one of R.sup.11-R.sup.13 represents a hydrogen atom or the like; and * represents a bonding hand).)

An organopolysiloxane compound represented by average structural formula (1) is capable of imparting an electron beam curable resin with high antistatic properties, while having excellent antistatic performance durability. ##STR00001##
(In the formula, Z represents a single bond or a group having a functionality of 2-20 and containing an organopolysiloxane structure; R.sup.1 represents a single bond, or an unsubstituted or substituted alkylene group having 1-20 carbon atoms; each of R.sup.2 and R.sup.3 represents an unsubstituted or substituted alkyl group having 1-10 carbon atoms, or the like; Y represents a monovalent hydrocarbon group having a polymerizable reactive group; each of p and q represents a number of 1-10, with (p+q) being 2-20 in accordance with the valence of Z; and in cases where Z represents a single bond, p and q represent 1, A.sup.? represents an anion and Q.sup.+ represents a cationic group that is represented by one of formulae (2)-(4) ##STR00002##
(wherein each one of R.sup.4-R.sup.10 represents an alkyl group having 1-20 carbon atoms, or the like; each one of R.sup.11-R.sup.13 represents a hydrogen atom or the like; and * represents a bonding hand).)

Disclosed herein is a method for producing silica gel-immobilized phosphonium salt catalysts including the steps of (a) reacting a silane compound with a silica gel in the presence of xylene, to obtain a catalyst precursor having a haloalkyl group or a haloaryl group, wherein the silane compound has a haloalkyl group or a haloaryl group, and a proportion of the silane compound is from 0.001 to 0.06 mol relative to 1 mol of the silica gel, and (b) reacting the catalyst precursor with a tertiary phosphine in xylene, to obtain a catalyst for synthesizing a cyclic carbonate, in which the silane compound is represented by formula (1), and the tertiary phosphine is represented by formula (2):
XR.sup.1Si(OR.sup.2).sub.3(1) ##STR00001##

An ionic liquid that is a salt has a Formula: ##STR00001##
Such ionic liquids may be used in electrolytes and in electrochemical cells.

An ion-immobilized metal oxide particle includes a metal oxide particle and an anion that itself includes a) a reactive group that consists of an alkoxysilyl group and b) an anionic group consisting of a carboxylate (COO.sup.) group or a sulfonate (SO.sub.3.sup.) group, the anion being immobilized to the metal oxide particle via a silanol group derived from the reactive group. An elastomer includes the ion-immobilized metal oxide particle, and a transducer includes the elastomer.