Patent ID: 8486677

Claim:
An enzyme preparation comprising an enzyme immobilizate including enzymes immobilized on an inert support; and a polyethersiloxane coating located on said enzyme immobilizate, said polyethersiloxane coating is obtained by hydrosilylating Si—H-functional polysiloxanes, in which the olefinic units used are polyethers bearing at least one terminally unsaturated group, with the proviso that at least one of the polyethers has at least two terminally unsaturated groups, wherein the Si—H-functional polysiloxanes are Si—H polysiloxanes of the general formula (I) M a D b D′ c T d Q e (I) where M=[R 1 2 R 2a SiO 1/2 ] D=[R 1 2 SiO 2/2 ] D′=[R 1 R 2b SiO 2/2 ] T=[R 1 SiO 3/2 ] Q=[SiO 4/2 ] a+b+c+d+e=3 to 850, a=2 to 10, b=1 to 800, c=0 to 400, d=0 to 10, e=0 to 10, R 1 are the same or different and are each independently selected from the group comprising: saturated or unsaturated, optionally branched alkyl groups having 1 to 30 carbon atoms, alkaryl radicals having 7 to 30 carbon atoms, aryl radicals having 6 to 30 carbon atoms, R 2a is independently hydrogen or R 1 and R 2b is independently hydrogen or R 1 ; and wherein the polyethers bearing at least one terminally unsaturated group are those of the general formula (II): where x 1 +x 2 +y 1 +y 2 =1 to 500, x 1 =0 to 200, x 2 =0 to 100, y 1 =0 to 200, y 2 =0 to 100, z=0 to 500, W=hydrogen or methyl, R 5 is an optionally branched, optionally substituted alkylene radical which optionally bears double bonds and has 1 to 30 carbon atoms, R 6 is independently a radical selected from the group comprising methyl, ethyl and phenyl, and R 7 is an optionally branched, optionally substituted alkyl radical or carboxyl radical which optionally contains double bonds and has 1 to 30 carbon atoms, with the proviso that, when z=0, x 2 =y 2 =0.