Electrically conductive, potentially adhesive composition

Claim 1

An electrically conductive, potentially adhesive composition which comprises (a) a thermoplastic polyblock organopolysiloxane copolymer having elastomeric properties and consisting of a plurality of repeat units corresponding to formula I, formula II or a mixture thereof ##STR26## wherein Y, which are identical or different, denote linear or branched alkylene radicals containing 2 to 6 carbon atoms; R, which are identical or different, denote alkyl and haloalkyl radicals containing 1 to 4 carbon atoms, cycloalkyl radicals containing 3 to 8 carbon atoms, and aryl and haloaryl radicals containing 6 to 8 carbon atoms; X, which are identical, denote a linear or branched alkylene radical containing 1 to 8 carbon atoms, a divalent radical corresponding to formula III --(CH.sub.2).sub.x --Q--T--Q--(CH.sub.2).sub.x -- (III) in which Q, which are identical, denote one of the groups --O-- or --OCO-- (--OCO-- being linked to T via the radical --CO--); T denotes a monocyclic divalent hydrocarbon radical containing 6 to 8 carbon atoms or a divalent organic radical containing 10 to 22 carbon atoms consisting of 2 hydrocarbon rings fused to each other or linked by a valency bond or by one of the groups of formulae --O--, --CH 2 --, --C(CH 3 ) 2 -- or --Si(R') 2 --, (R' being an alkyl radical containing 1 to 3 carbon atoms), and x, which are identical, denote 1, 2 or 3, or a divalent hydrocarbon radical corresponding to formula IV --(CH.sub.2).sub.b --T--(CH.sub.2).sub.b -- (IV) in which T has the meaning given in formula III, and b, which are identical, denote 0, 1 or 2; Z, which are identical, have the meaning given for X, but cannot correspond to formula III, a denotes 0 or 1, p denotes any number from 1 to 120, and n denotes any number from 1 to 1000, and (b) an effective amount, sufficient to afford electrical conductivity to the composition, of particles with at least the surface of said particles being electrically conductive.