A reaction composition contains (a) an allyl polyether having the following formula: CH.sub.2=CHCH.sub.2O-A.sub.a-B where, (i) subscript a is 2 to 170; (ii) A is selected from: —CH.sub.2CH.sub.2O—; —CH.sub.2CH(CH.sub.3)O—; —CH(CH.sub.3)CH.sub.2O—, CH.sub.2CH(CH.sub.2CH.sub.3)O—; —CH(CH.sub.2CH.sub.3)CH.sub.2O, —CH.sub.2CF(CF.sub.3)O—, —CF(CF.sub.3)CF.sub.2O— and —CF.sub.2CF(CF.sub.3)O—; and (iii) B is selected from —H, —CH.sub.3, —CH.sub.2CH.sub.3, —CH.sub.2CH.sub.2CH.sub.3, —CH.sub.2CH.sub.2CH.sub.2CH.sub.3, —C(O)CH.sub.3, and —CF.sub.2CF.sub.2CF.sub.3; (b) A silyl hydride functional siloxanc comprising the following siloxane units [R.sub.2HSiO.sub.1/2].sub.m[R.sub.2SiO.sub.2/2].sub.d[R.sub.2SiO.sub.3/2].sub.t[SiO4/2].sub.q wherein d+t+q is one or more and wherein: (i) R is selected from hydrocarbyl groups liaing from one to 8 carbon atoms; (ii) subscript m is 2 or more; (iii) subscript d is zero to 20; (iv) subscript t is zero to 2; (v) subscript q is zero to 2; and (c) a platinum-based hydrosilylation catalyst; where there are at least 4 molar equivalents of silyl hydride functionalities relative to allyl functionalities in the reaction composition.

A reaction composition contains (a) an allyl polyether having the following formula: CH.sub.2=CHCH.sub.2O-A.sub.a-B where, (i) subscript a is 2 to 170; (ii) A is selected from: —CH.sub.2CH.sub.2O—; —CH.sub.2CH(CH.sub.3)O—; —CH(CH.sub.3)CH.sub.2O—, CH.sub.2CH(CH.sub.2CH.sub.3)O—; —CH(CH.sub.2CH.sub.3)CH.sub.2O, —CH.sub.2CF(CF.sub.3)O—, —CF(CF.sub.3)CF.sub.2O— and —CF.sub.2CF(CF.sub.3)O—; and (iii) B is selected from —H, —CH.sub.3, —CH.sub.2CH.sub.3, —CH.sub.2CH.sub.2CH.sub.3, —CH.sub.2CH.sub.2CH.sub.2CH.sub.3, —C(O)CH.sub.3, and —CF.sub.2CF.sub.2CF.sub.3; (b) A silyl hydride functional siloxanc comprising the following siloxane units [R.sub.2HSiO.sub.1/2].sub.m[R.sub.2SiO.sub.2/2].sub.d[R.sub.2SiO.sub.3/2].sub.t[SiO4/2].sub.q wherein d+t+q is one or more and wherein: (i) R is selected from hydrocarbyl groups liaing from one to 8 carbon atoms; (ii) subscript m is 2 or more; (iii) subscript d is zero to 20; (iv) subscript t is zero to 2; (v) subscript q is zero to 2; and (c) a platinum-based hydrosilylation catalyst; where there are at least 4 molar equivalents of silyl hydride functionalities relative to allyl functionalities in the reaction composition.

Processes are described for purifying acidic, preferably superacidic, in particular trifluoromethanesulfonic acid-acidified, end-equilibrated acetoxysiloxanes, wherein the acidic, preferably superacidic, in particular trifluoromethanesulfonic acid-acidified, acetic anhydride-containing and optionally acetic acid-containing equilibrated, preferably end-equilibrated acetoxysiloxane, which is optionally dissolved in an inert solvent, is contacted with a base, the precipitate is filtered off thereafter and then the filtrate obtained is optionally purified by distillation.

A method of making a polysilylether (PSE) polymer includes: cooling a solution of diethylamine to 0° C. under argon; adding cold dialkyldichlorosilane to form a first mixture; slowly warming the first mixture to form dialkylbis(diethylamino)silane; diluting the first mixture with hexane then filtering via cannula; evaporating the hexane and excess diethylamine; purifying the dialkylbis(diethylamino)silane under vacuum distillation; adding the dialkylbis(diethylamino)silane to a solution of diol dissolved in tetrahydrofuran to form a second mixture; heating the second mixture to 60° C. while reflux condensing, and cooling and concentrating the second mixture under vacuum to form a resultant mixture containing the polysilylether (PSE) polymer.

Provided are a polycarbonate-polyorganosiloxane copolymer having a carbon tetrachloride concentration of less than 4 ppm by mass, and the following production method for producing the polycarbonate-polyorganosiloxane copolymer. More specifically, provided is a method of continuously producing a polycarbonate-polyorganosiloxane copolymer, the method comprising the steps of: (A) continuously or intermittently taking a polymerization reaction liquid, which is obtained by polymerizing a dihydric phenol compound, a carbonate precursor, and a specific polyorganosiloxane in the presence of an alkaline compound aqueous solution and a water-insoluble organic solvent, out of a reactor; (B) separating the polymerization reaction liquid taken out in the step (A) into an aqueous phase and a water-insoluble organic solvent phase; (C) washing the water-insoluble organic solvent phase separated in the step (B), followed by separation thereof into an aqueous phase and a water-insoluble organic solvent phase; (D) concentrating the water-insoluble organic solvent phase separated in the step (C); and (E) recovering part or all of the water-insoluble organic solvent removed by evaporation in the step (D), followed by distillation purification thereof in a distillation column, the water-insoluble organic solvent obtained in the step (E) being reused as at least part of the water-insoluble organic solvent in the step (A) or as an extraction solvent for the aqueous phase separated in the step (B), or as both thereof, in the step (E), the distillation purification being performed while a concentration of the polycarbonate-polyorganosiloxane copolymer in a column bottom liquid of the distillation column is controlled to 6% by mass or less.

A (meth)acrylate functional silicone and method for its preparation are provided. This (meth)acrylate functional silicone may have pendant poly(meth)acrylate-functional groups. This (meth)acrylate functional silicone may have terminal alkenyl groups. This (meth)acrylate functional silicone may be used in pressure sensitive adhesives.

A silicone polymer production method achieves a significantly improved yield due to the needlessness of a rinsing step and can produce a stable silicone polymer. The production method for a silicone polymer includes a step of preparing at least one silane compound selected from the compounds represented by general formula (1); R.sub.aSi(OR.sup.1).sub.4-a (1), wherein R is a hydrogen atom or a monovalent organic group, R.sup.1 is a monovalent organic group, and a is an integer of 1 or 2 and the compounds represented by general formula (2); Si(OR.sup.2).sub.4 (2), wherein R.sup.2 is a monovalent organic group, a step of hydrolyzing it with a quaternary ammonium compound in the presence of water, and a step of bringing it into contact with a cation exchange resin.

A silicone polymer production method achieves a significantly improved yield due to the needlessness of a rinsing step and can produce a stable silicone polymer. The production method for a silicone polymer includes a step of preparing at least one silane compound selected from the compounds represented by general formula (1); R.sub.aSi(OR.sup.1).sub.4-a (1), wherein R is a hydrogen atom or a monovalent organic group, R.sup.1 is a monovalent organic group, and a is an integer of 1 or 2 and the compounds represented by general formula (2); Si(OR.sup.2).sub.4 (2), wherein R.sup.2 is a monovalent organic group, a step of hydrolyzing it with a quaternary ammonium compound in the presence of water, and a step of bringing it into contact with a cation exchange resin.

A production method for a liquid high purity sugar derivative-modified silicone or a composition thereof is disclosed. The method comprises the steps of: 1) capturing hydrophilic impurities in solid particles by causing an impurity containing composition containing liquid sugar derivative-modified silicone and the hydrophilic impurities derived from a sugar derivative to contact the solid particles, the sugar derivative being a hydrophilic modifier of the sugar derivative-modified silicone, and the solid particles being able to capture the hydrophilic impurities; and 2) separating the sugar derivative-modified silicone and the solid particles. The method is useful for production of the liquid high purity sugar derivative-modified silicone and the composition thereof on a commercial scale.

A production method for a liquid high purity sugar derivative-modified silicone or a composition thereof is disclosed. The method comprises the steps of: 1) capturing hydrophilic impurities in solid particles by causing an impurity containing composition containing liquid sugar derivative-modified silicone and the hydrophilic impurities derived from a sugar derivative to contact the solid particles, the sugar derivative being a hydrophilic modifier of the sugar derivative-modified silicone, and the solid particles being able to capture the hydrophilic impurities; and 2) separating the sugar derivative-modified silicone and the solid particles. The method is useful for production of the liquid high purity sugar derivative-modified silicone and the composition thereof on a commercial scale.