Organosilica materials made from monomers including at least a source of silica that is reactive to polymerize, optionally in combination with at least one additional cyclic monomer. Methods for making such organosilica materials are also described herein.

Methods of identifying precursors for producing high porosity and high surface area organosilica materials are providing herein. Methods of producing organosilica materials and uses thereof are also provided herein.

Methods of identifying precursors for producing high porosity and high surface area organosilica materials are providing herein. Methods of producing organosilica materials and uses thereof are also provided herein.

Highly condensed silicon resins are obtained by a three step continuous procedure without the use of organic solvent, by preliminarily forming a partial alkoxylate by reacting a chlorosilane with alcohol containing no or a minimal amount of water, feeding the partial alkoxylate to a reaction column to form a silicone resin of low degree of condensation, and further condensing the silicone resin intermediate thus formed to produce a silicone resin product.

Highly condensed silicon resins are obtained by a three step continuous procedure without the use of organic solvent, by preliminarily forming a partial alkoxylate by reacting a chlorosilane with alcohol containing no or a minimal amount of water, feeding the partial alkoxylate to a reaction column to form a silicone resin of low degree of condensation, and further condensing the silicone resin intermediate thus formed to produce a silicone resin product.

Provided are an organopolysiloxane having a catechol structure per each molecule; and a powder treatment agent that is comprised of such organopolysiloxane. The organopolysiloxane is a catechol functional organopolysiloxane represented by the following formula (1):

##STR00001## wherein each R.sup.1 independently represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 6 carbon atoms; each R.sup.2 independently represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 6 carbon atoms, or a substituent group represented by a formula (2); a, b, c and d each represent 0 or a positive number, and satisfy a+b+c+d=2 to 1,000; in each molecule, at least one R.sup.2 is the substituent group represented by the formula (2) being expressed as:

##STR00002## wherein Y.sup.1 represents a substituted or unsubstituted divalent hydrocarbon group having 2 to 6 carbon atoms.

Provided are an organopolysiloxane having a catechol structure per each molecule; and a powder treatment agent that is comprised of such organopolysiloxane. The organopolysiloxane is a catechol functional organopolysiloxane represented by the following formula (1):

##STR00001## wherein each R.sup.1 independently represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 6 carbon atoms; each R.sup.2 independently represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 6 carbon atoms, or a substituent group represented by a formula (2); a, b, c and d each represent 0 or a positive number, and satisfy a+b+c+d=2 to 1,000; in each molecule, at least one R.sup.2 is the substituent group represented by the formula (2) being expressed as:

##STR00002## wherein Y.sup.1 represents a substituted or unsubstituted divalent hydrocarbon group having 2 to 6 carbon atoms.

Moisture curable RTV-1 compositions with rapid curing and a modulus which is adjustable over a wide range include organopolysiloxanes having on-chain and side-chain silicon-bonded α-aminoalkyl groups and at least on average two silicon-bonded alkoxy groups, trialkoxyorganylsilanes and/or tetraalkoxysilanes, and organopolysiloxanes bearing alkoxysilyl groups.

Moisture curable RTV-1 compositions with rapid curing and a modulus which is adjustable over a wide range include organopolysiloxanes having on-chain and side-chain silicon-bonded α-aminoalkyl groups and at least on average two silicon-bonded alkoxy groups, trialkoxyorganylsilanes and/or tetraalkoxysilanes, and organopolysiloxanes bearing alkoxysilyl groups.

A method of synthesizing a high purity acryloxyalkyldimethylchlorosilane involves (a) reacting an acrylate salt with a haloalkyldimethylalkoxysilane to form an acryloxy-substituted alkyldimethylalkoxysilane; and (b) displacing the alkoxy group in the acryloxy-substituted alkyldimethylalkoxysilane using a chloride-containing compound to form the acryloxyalkyldimethylchlorosilane. The acryloxyalkyldimethylchlorosilane, which may be used as an end-capper for AROP, has a purity of greater than about 99% and contains no detectable isomeric or hydrogenated impurities.