A process for preparing spherical silicone resin particles in which alkoxysilanes are reacted with water to form a hydrolysate is provided. The resulting silicone resin particles are isolated from a mixture. The silicone resin particles are dried and the particles are deagglomerated by ultrasonic sieving.

The invention relates to the use of molecularly imprinted polymer(s) or MIPs, of odorous molecule(s), as deodorant agent in particular for selectively trapping molecules that are the cause of human body odour. More particularly by using MIPs which may be obtained via polymerization of “sol-gel” type; it being understood that the polymerization is performed in the presence v) of one or more “templates” of target molecule(s) responsible for human body odour. Another subject of the invention concerns a NI process for preparing MIPs as defined previously, MIPs obtained via this process, and a cosmetic composition comprising at least one MIP as defined previously. Unexpectedly, it appears that the MIPs make it possible to specifically trap precursors of odorous molecules and odorous molecules that may be used in cosmetic formulations, especially those that are the cause of the unpleasant odour of sweat.

The invention relates to the use of molecularly imprinted polymer(s) or MIPs, of odorous molecule(s), as deodorant agent in particular for selectively trapping molecules that are the cause of human body odour. More particularly by using MIPs which may be obtained via polymerization of “sol-gel” type; it being understood that the polymerization is performed in the presence v) of one or more “templates” of target molecule(s) responsible for human body odour. Another subject of the invention concerns a NI process for preparing MIPs as defined previously, MIPs obtained via this process, and a cosmetic composition comprising at least one MIP as defined previously. Unexpectedly, it appears that the MIPs make it possible to specifically trap precursors of odorous molecules and odorous molecules that may be used in cosmetic formulations, especially those that are the cause of the unpleasant odour of sweat.

Described is a process for producing acidified, preferably superacid-acidified, in particular trifluoromethanesulfonic acid-acidified, end-equilibrated linear α,ω-acetoxy-bearing siloxanes, wherein linear α,ω-hydroxy-bearing siloxanes, using acid, preferably superacid, particularly preferably perfluoroalkanesulfonic acid, especially preferably trifluoromethanesulfonic acid, as catalyst, are reacted with acetic anhydride and with addition of acetic acid.

Described is a process for producing acidified, preferably superacid-acidified, in particular trifluoromethanesulfonic acid-acidified, end-equilibrated linear α,ω-acetoxy-bearing siloxanes, wherein linear α,ω-hydroxy-bearing siloxanes, using acid, preferably superacid, particularly preferably perfluoroalkanesulfonic acid, especially preferably trifluoromethanesulfonic acid, as catalyst, are reacted with acetic anhydride and with addition of acetic acid.

To provide a siliceous film manufacturing composition that can fill a narrow and a high aspect ratio trench and can produce a thick siliceous film. [Means for Solution] The present invention provides a siliceous film manufacturing composition that comprises, (a) a block copolymer having a linear and/or cyclic polysilane backbone block with or more silicon atoms and a polycarbosilane backbone block with or more silicon atoms, and (b) a solvent.

A method produces an emulsion comprising an amino-functional polyorganosiloxane having low cyclic siloxane content. The method involves mechanical emulsification and devolatilization in one twin screw extruder.

A preparation method for a spherical or angular powder filler, comprising: providing spherical or angular siloxane comprising a T unit, wherein the T unit is R.sub.1SiO.sub.3−, and R.sub.1 is a hydrogen atom or an organic group which can be independently selected from carbon atoms 1-18; and performing heat treatment on the spherical or angular siloxane under an inert gas atmosphere or atmospheric atmosphere, the heat treatment temperature being between 250 degrees and 650 degrees, so that silicon hydroxyl groups in the spherical or angular siloxane are condensed to obtain the spherical or angular powder filler. In the unit T of the spherical or angular powder filler, the content of the unit without containing a hydroxyl group in the total unit is greater than or equal to 95%, and the content of the unit containing one hydroxyl group in the total unit is less than or equal to 5%. Also disclosed are the spherical or angular powder filler obtained by the preparation method, and application thereof. The spherical or angular powder filler has low permittivity, low water absorption and low radioactivity.

To provide a siliceous film manufacturing composition that can fill a narrow and a high aspect ratio trench and can produce a thick siliceous film. [Means for Solution] The present invention provides a siliceous film manufacturing composition that comprises, (a) a block copolymer having a linear and/or cyclic polysilane backbone block with or more silicon atoms and a polycarbosilane backbone block with or more silicon atoms, and (b) a solvent.

An aspect of the present invention is directed to a vibration damping material for use in a mount part for supporting a motor, the vibration damping material including: a gel of a dehydration condensation reaction product of silicone oil and boric acid, wherein the boric acid is in an amount of 25 to 75 moles based on 100 moles of the total amount of the silicone oil and the boric acid.