Brief description of the masses of polysiloxanes molecular castings by polymerization and rearrangement of polysiloxanes in the presence of catalyst is constituted by a porous mineral support is covered with a film with a carrier of sulphonic or phosphonic acid

摘要

The invention relates to a method of preparation of the organopolysiloxanes of the mass is a continuation high by polymerization and rearrangement of the organopolysiloxanes of the mass is a continuation of little high by means of a catalyst. / p & & p & the invention is characterized in that the catalyst is constituted by a porous mineral support having an average pore diameter superior to 20angstroms, a pore volume between 0,2 and 2mlg, the support being coated of a quantity lower has 15mgm, of a group with carrying sulphonic or phosphonic. / p & & p & the method makes it possible to obtain a continuation of the organopolysiloxanes of mass high with a suitable tres high.