Abstract: A silicone-(meth) acrylate copolymer (copolymer) and methods for its preparation are provided. The copolymer may be prepared by emulsion polymerization or via other means. An emulsion formulation containing the copolymer is suitable for treating a textile.

Abstract: A catalyst for hydrosilylation is disclosed. The catalyst comprises a complex having a certain formula. A redox-switchable catalyst system for preparing the catalyst is also disclosed. The redox-switchable catalyst system comprises a redox-switchable catalyst and a reducing compound. The reducing compound reduces a formal oxidation state of the redox-switchable catalyst to give the catalyst, where the former is generally inactive in catalyzing hydrosilylation and the latter is catalytically active. A composition comprising the catalyst and/or the redox-switchable catalyst system, and a hydrosilylation reaction product, are also disclosed.

Abstract: A curable silicone rubber composition of the type referred to in industry as “self-adhesive” or as having “selective adhesion” (hereafter referred to as “curable self-adhesive silicone rubber compositions”). The curable self-adhesive silicone rubber compositions comprise: (A) one or more organopolysiloxanes containing at least 2 alkenyl groups and/or alkynyl groups per molecule and having a viscosity in a range of 1000 mPa·s to 200,000 mPa·s at 25° C.; (B) an organopolysiloxane containing at least 2 or 3 silicon-bonded hydrogen atoms per molecule; (C) at least one hydrosilylation catalyst; (D) at least one reinforcing and optionally one or more non-reinforcing fillers; (E) an adhesion promoter; and (F) an oligomer which has been found to surprisingly provide heat-humidity stabilization.

Abstract: A method for preparing a silyl ester compound is disclosed. The silyl ester compound may be a silane monomer or siloxane oligomer. The silyl ester compound may be hydro silylated with a polyorganohydrogensiloxane to form a silyl ester protected product, which may then be de-protected with water to prepare a carboxy-functional polyorganosiloxane.

Abstract: The present invention is a composition comprising an aqueous dispersion of copolymer particles comprising structural units of a) an acrylate monomer; b) an acid monomer; and c) a siloxane-acrylate monomer of formula I: where R, R1, R2, Y and x are defined herein. The composition, which also comprises a nonionic and anionic surfactant as described herein, is useful in a variety of applications ranging from architectural coatings to personal care products.

Abstract: A curable composition is disclosed. The curable composition comprises (I) an epoxide-functional silicone-acrylate polymer and (II) an aminosiloxane. The epoxide-functional silicone-acrylate polymer comprises acrylate-derived monomeric units comprising siloxane moieties, epoxide-functional moieties, and optionally, hydrocarbyl moieties, and the aminosiloxane comprises an average of at least two amine functional groups per molecule. A method of preparing the curable composition is also disclosed, and includes reacting (A) an acryloxy-functional organosilicon component, (B) an epoxy-functional acrylate component, and optionally (C) an acrylate component, to give the epoxide-functional silicone-acrylate polymer (I), and combining the epoxide-functional silicone-acrylate polymer (I) with the aminosiloxane (II). An aminosiloxane-silicone-acrylate copolymer prepared with the composition, a cured product comprising the same, and methods of preparing the same, are also disclosed.

Abstract: The present invention relates to a composition comprising an aqueous dispersion of acrylate-siloxane copolymer particles comprising structural units of an acrylate monomer; an acid monomer; and a siloxane acrylate monomer of formula I: where R, R1, R2, Y and x are as defined herein. The composition has a high solids content, a low concentration of siloxane acrylate monomer and low coagulum levels. The composition is useful for forming coatings with improved hydrophobicity, stain resistance, and aesthetic/haptic properties compared with conventional all-acrylic compositions.

Abstract: A method of preparing an organosilanol compound is disclosed. The method comprises reacting (A) an initial organosilicon compound and (B) water in the presence of (C) a catalyst. The catalyst (C) is selected from: (C1) [(C8H12irCl]2[(p-cymene)RuCl2]2; and (C3) Pd/C. The initial organosilicon compound (A) has the general formula HO—Si(R)2—[Si(R)2O]a—OSi(R)2—Y and the organosilanol compound has the general formula HO—Si(R)2-[Si(R)2O]a—OSi(R)2—Y, where each R is an independently selected hydrocarbyl group; Y comprises a functional moiety selected from alkoxysilyl moieties, epoxide moieties, and acryloxy moieties, with the proviso that Y is other than the acryloxy moieties when the catalyst (C) is (C3) Pd/C; and subscript a is 0 or 1. The organosilanol compound prepared by the method is also provided.

Abstract: A branched organosilicon compound (“compound”) having the general formula (R1)3Si—X—Y is provided. In the formula: each R1 is selected from R and —OSi(R4)3, with the proviso that at least one R1 is —OSi(R4)3; each R is independently a substituted or unsubstituted hydrocarbyl group; each R4 is selected from R, —OSi(R5)3, and —[OSiR2]mOSiR3; each R5 is selected from R, —OSi(R6)3, and —[OSiR2]mOSiR3; each R6 is selected from R and —[OSiR2]mOSiR3; with the proviso that at least one of R4, R5 and R6 is —[OSiR2]mOSiR3; 0<m?100; X is a divalent linking group; and Y is selected from one of formulas (1)-(111) described herein. Also provided is a method of preparing the compound via hydrosilylation reaction, a copolymer comprising the reaction product of the compound and a second compound reactive with the compound, a method of forming the copolymer, and a composition including at least one of the compound and the copolymer.

Abstract: A multifunctional organosilicon compound is provided which has the general formula XSi([OSiR2]p-0-SiR2Y)a(R1)3-a— ln the formula, X is selected from H and ethylenically un saturated moieties; each Y independently comprises a functional moiety selected from alkoxysilyl moieties, acryloxy moieties, and epoxide moieties; each R is an independently selected hydrocarbyl group; each R1 is an independently selected hydrocarbyl group; subscript a is 1, 2, or 3; and each subscript b is independently 0, 1, or 2. A method of preparing the multifunctional organosilicon compound is also provided. The method comprises reacting (A) an organosilanol compound and (B) a silane compound having at least two hydrolysable groups. A functionalized siloxane compound prepared from the multifunctional organosilicon compound, a method of preparing the functionalized siloxane compound, and an adhesive comprising the functionalized siloxane compound are also provided.

Abstract: A polymer blend is provided comprising: (A) multistage polymer, comprising: acrylate rich stage comprising: structural units of monoethylenically unsaturated non-ionic, acrylate rich stage monomer selected from C1-22 alkyl (meth)acrylates and mixtures thereof; and carbosiloxane rich stage, comprising: structural units of carbosiloxane monomer of formula (I); and (B) silicone-grafted vinyl copolymer, wherein the silicone-grafted vinyl copolymer, comprises: structural units of a vinyl (B) monomer; and structural units of a carbosiloxane dendrimer of formula (V). Also provided are personal care formulations comprising the polymer blend.

Abstract: A personal care formulation is provided comprising: multistage polymer, comprising: acrylate rich stage comprising: (a) structural units of monoethylenically unsaturated non-ionic, acrylate rich stage monomer selected from C1-22 alkyl (meth)acrylates and mixtures thereof; and (b) carbosiloxane rich stage, comprising: structural units of carbosiloxane monomer of formula (I), wherein a is 0 to 3; wherein d is 0 or 1; wherein R1 is selected from hydrogen, C1-10 alkyl group and aryl group; wherein R2 is selected from hydrogen and C1-10 alkyl group; wherein R8 is —O—Si(CH3)2—O—Si(CH3)3 group; wherein Y is selected from formula (II), (III) and (IV); wherein R4 and R6 are selected from hydrogen and methyl group; wherein R3 and R5 are a C1-10 alkylene group; wherein R7 is C1-10 alkyl group; wherein b is 0 to 4 and wherein c is 0 or 1.

Abstract: A cross-linked composition is disclosed. In various embodiments, the cross-linked composition comprises the reaction product of: a first siloxane having at least one pendant polycyclic anhydride group; a second siloxane having at least one pendant polycyclic anhydride group; and a polyol having at least two hydroxyl groups reactive with the pendant polycyclic anhydride groups of the first and second siloxanes. A personal care composition is also provided. The personal care composition comprises a cross-linked composition having at least two carboxyl groups. In various embodiments, the cross-linked composition is as described above. The personal care composition further comprises a least one cosmetic component; optionally in a cosmetically acceptable medium. Methods of forming the cross-linked composition and the personal care composition are also disclosed. A polycyclic anhydride composition and polyorganosiloxane composition are also disclosed.

Abstract: A complex prepared by combining a metal compound and an N-heterocyclic carbene has catalytic activity for condensation reaction of polyorganosiloxane compositions. The composition includes the complex, a silanol functional compound having an average per molecule of one or more silicon bonded hydroxy moieties.

Abstract: A method can selectively prepare a compound of formula (IV), where each R1 and each R2 are independently selected from an alkyl group, an aryl group, a halogenated alkyl group, or a halogenated aryl group of 6 to 10 carbon atoms each R3 is an alkane-diyl group, and each R4 is hydrogen or an alkyl group. The method involves hydrosilylation of an organohydrogensiloxane oligomer with a carboxylic acid alkenyl ester using an iridium complex catalyst.

Abstract: A method can selectively prepare a compound of formula (IV):, where each R1 and each R2 are independently selected from an alkyl group, an aryl group, a halogenated alkyl group, or a halogenated aryl group of 6 to 10 carbon atoms each R3 is an alkane-diyl group, and each R4 is hydrogen or an alkyl group. The method involves hydrosilylation of an organohydrogensiloxane oligomer with a carboxylic acid alkenyl ester using an iridium complex catalyst.

Abstract: A complex prepared by combining a metal compound and an N-heterocyclic carbene has catalytic activity for condensation reaction of polyorganosiloxane compositions. The composition includes the complex, a silanol functional compound having an average per molecule of one or more silicon bonded hydroxy moieties.