Silicone mist inhibitor

Abstract

A silicone mist inhibitor which has an excellent effect of inhibiting silicone mist and provides a composition and a cured product which have excellent storage stability is provided. A silicone mist inhibitor includes at least one selected from organic powder, inorganic powder and inorganic-organic composite powder, wherein the powder has a volume average particle size of 100 to 4000 nm. Further, a solventless silicone composition includes an organopolysiloxane having a viscosity at 25 degrees C. of 25 to 50,000 mPa·s, wherein the solventless silicone composition further includes the aforesaid silicone mist inhibitor in an amount of 0.1 to 10 parts by mass, relative to 100 parts by mass of the organopolysiloxane.

1 . A silicone mist inhibitor comprising at least one selected from organic powder, inorganic powder and inorganic-organic composite powder, wherein the powder has a volume average particle size of 100 to 4000 nm. 
     
     
         2 . The silicone mist inhibitor according to  claim 1 , wherein the powder comprise at least one selected from organic powder, inorganic powder and inorganic-organic composite powder, wherein the powder has a volume average particle size of 200 to 2000 nm. 
     
     
         3 . The silicone mist inhibitor according  claim 1 , wherein the powder comprise at least one selected from silicone powder, powder of (meth)acryl polymer and powder of fluorine polymer. 
     
     
         4 . The silicone mist inhibitor according to  claim 3 , wherein said silicone powder comprises at least one selected from silicone elastomer particles, polyorganosilsesquioxane particles, silicone elastomer particles whose surfaces are covered with a polyorganosilsesquioxane, and silica particles whose surfaces are treated with a silane. 
     
     
         5 . A solventless silicone composition comprising an organopolysiloxane having a viscosity at 25 degrees C. of 25 to 50,000 mPa·s, wherein the solventless silicone composition further comprises the silicone mist inhibitor according to  claim 1 , in an amount of 0.1 to 10 parts by mass, relative to 100 parts by mass of said organopolysiloxane. 
     
     
         6 . The solventless silicone composition according to  claim 5 , wherein the organopolysiloxane is a heat-curable organopolysiloxane. 
     
     
         7 . The solventless silicone composition according to  claim 5 , wherein the organopolysiloxane is a radiation-curable organopolysiloxane. 
     
     
         8 . An article having a sheet substrate and a film of a cured product of the solventless silicone composition according to  claim 5 . 
     
     
         9 . A method for coating a substrate, comprising steps of applying the solventless silicone composition according to  claim 5  on a sheet substrate and curing said composition by heat and/or irradiation.