| 摘要 |
A suspension for the solvent-free production of silicone resin-bonded papers based on sheet silicates, which consists of: (a) 100 parts by weight of a sheet silicate, (b) 100 to 10,000 parts by weight of water, (c) 0.1 to 5 parts by weight of at least one silane of formula (I): (R'O)aSiR4-a(I) in which R denotes substituted or unsubstituted hydrocarbon radicals having 1 to 20 carbon atoms and R' denotes C1-10-alkyl, aryl, alkylaryl or hydrogen and a assumes a value from 1 to 3, and/or the partial hydrolysis product thereof, (d) 1 to 50 parts by weight of a pulverulent silicone resin of formula (II): (R'O)bSiRCO(4-b-c)/2(II) in which R and R1 have the abovementioned meaning and b assumes a value from 0 to 0.5 and c a value from 0.7 to 1.3, with the proviso that at least 5 parts by weight of the silicone resin of formula (II) are used per part by weight of the compound of formula (I), (e) 0.01 to 20 parts by weight of a compound catalyzing the hydrolysis and/or condensation of the compounds of formulae (I) and/or (II) and (f) optionally further known additives.
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