| http://www.w3.org/ns/prov#value | - alkylaryl groups comprise, for example, from 7 to 20 carbon atoms; In one embodiment, R.sub.2 is chosen from methyl. n is an integer wherein the polysiloxane of formula (I) has a kinematic viscosity ranging from 1 to 1.times.10.sup.6 mm.sup.2 /s, for
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