The present invention relates to a process for preparing a linear carbosiloxane polymer, which comprises subjecting at least one thoroughly purified cyclic carbosiloxane monomer to ring opening polymerization in the presence of an acidic or basic catalyst and at least one silanol-functional compound.

A process for preparing a cyclic polysiloxazane is disclosed. The cyclic siloxazane may optionally be converted to an ?-alkoxy-?-amino-functional polysiloxane. The cyclic siloxazane or the ?-alkoxy-?-amino-functional polysiloxane, may be used as a capping agent for a silanol-functional polyorganosiloxane in a process to make an amino-functional polyorganosiloxane.

A new class of cyclotrisiloxanes having hydridosiloxanylalkyl substituents on one, two, or three of the ring silicon atoms and a method for their preparation are provided. These compounds undergo living anionic ring-opening polymerization to generate unique polymer structures.

An adjuvant composition contains lecithin and an organosilicon surfactant as defined herein.

A silicone polyether for use in forming a solid polymer electrolyte film, the silicone polyether comprising a heterocyclic moiety. The silicone polyether comprising the heterocyclic moiety may be used to provide an electrolyte composition suitable for use in an electrochemical device. The silicone polyether comprising a heterocyclic moiety may also be used to form a solid polymer electrolyte that may be used to form a solid polymer electrolyte film, which may be suitable for use in electrochemical devices.

An organic silicon compound is disclosed which is represented by a formula : (R.sup.1.sub.3SiO).sub.3SiR.sup.2-[SiR.sup.3.sub.2O].sub.y[SiR.sup.3.sub.2].sub.w-R.sup.4-R.sup.5, wherein each of R.sup.1 and R.sup.3 is a group independently selected from the group consisting of alkyl groups, alkenyl groups, aryl groups, aralkyl groups and alkoxy groups having 1 to 20 carbon atoms, R.sup.2 is a divalent hydrocarbon group or an oxygen atom, R.sup.4 is a divalent hydrocarbon group, or a direct bond to a silicon (Si) atom, R.sup.5 is a monovalent group represented by (R.sup.6O).sub.qR.sup.7.sub.(3-q)Si or a monovalent hydrocarbon group having 1 to 20 carbon atoms, and each of R.sup.6 and R.sup.7 is a group independently selected from the group consisting of alkyl groups, alkenyl groups, aryl groups, aralkyl groups and alkoxy groups having 1 to 20 carbon atoms, and q is an integer between 1 and 3, y is an integer between 0 and 200, and w is 0 or 1.

A flame retardant resin composition comprising (A) a silicone resin, (B) a triazine-modified phenol novolak compound, and (C) a filler can be formed in film form. The resin film possesses satisfactory covering or encapsulating performance to large size/thin wafers.

The present invention relates to a tin-free composition comprising at least one silylated polymer and at least one tin-free polyhedral oligomeric metallo silsesquioxane. The present invention also relates to a process of curing a composition comprising a silylated polymer comprising the step of: contacting a silylated polymer with a tin-free polyhedral oligomeric metallo silsesquioxane.

A coating composition comprising (A) an organosiloxane obtained from hydrosilylation reaction of an organohydrogensiloxane having at least two hydrosilyl groups with an alkenyl-containing alkoxysilane, and (B) an organometallic catalyst is fast curable at low temperature. The cured coating is crack resistant.

A siloxane monomer obtained from a compound represented by Chemical Formula 1 and a compound represented by Chemical Formula 2, an encapsulant composition including the siloxane monomer, an encapsulant obtained by curing the encapsulant composition, and an electronic device including the encapsulant are disclosed.