- NOVEL RAFT AGENTS AND THEIR USE IN THE DEVELOPMENT OF POLYVINYLPYRROLIDONE GRAFTED NANOPARTICLES
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Nanoparticles having a plurality of PVP chains covalently bonded to a surface of the nanoparticle are provided, along with their methods of formation and the RAFT agents for the polymerization of the PVP chains. RAFT agents are generally provided, along with their methods of formation and use. Methods are also generally provided for grafting a PVP polymer onto a nanoparticle. In one embodiment, the method includes: polymerizing a plurality of monomers in the presence of a RAFT agent to form a polymeric chain covalently bonded to the nanoparticle.
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- METHOD FOR PRODUCING AMINOALKYLALKOXYSILANES
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Aminoalkylalkoxysilanes are prepared from halo(haloalkyl)silanes in the simultaneous presence of ammonia or primary organic amine and alcohol.
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Paragraph 0050
(2015/02/25)
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- ORGANOSILICON COMPOUND AND ITS PRODUCTION METHOD, COMPOUNDING AGENT FOR RUBBER, RUBBER COMPOSITION, AND TIRE
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A method for producing a sulfur-containing organosilicon compound capable of dramatically reducing hysteresis loss of the cured rubber composition and improving abrasion resistance and its production method are provided. A compounding agent for rubber containing the sulfur-containing organosilicon compound, a rubber composition prepared by blending such compounding agent for rubber, and a tire produced by using the cured rubber composition are also provided. The sulfur-containing organosilicon compound has a hydrolyzable silyl group, amino group, and mercapto group.
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- Process for making a silylisocyanurate
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This invention provides a process for making a silylorganocarbamate or a silylisocyanurate which process comprises reacting an aminosilane with a dialkyl carbonate, diaryl carbonate or a mixture thereof in the presence of a basic catalyst to obtain the silylorganocarbamate; optionally, neutralizing the basic catalyst and residual aminosilane with a neutralizing agent; and adding a cracking catalyst and heating at subatmospheric pressure to obtain the silylisocyanurate; or heating a silylorganocarbamate at a temperature sufficient for dissociation of the carbamate at subatmospheric pressure in the presence of a cracking catalyst and a timerization catalyst to obtain a silylisocyanurate.
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- Silicone reaction products and glycol compositions containing the products
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The reaction product of phosphorous acid, formaldehyde, and monomeric or polymeric alkoxysilanes having one or more aminoalkylene groups are useful as gelation inhibitors for aqueous glycol solutions.
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- Process for making amino group-containing organosilicon compounds
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A process for making an organosilicon compound containing an amino group, which comprises reacting an allylamine with the hydrosilyl group of a silicon compound represented by the formula: wherein R1 represents monovalent groups which may be identical of different and are selected from the group consisting of substituted or unsubstituted hydrocarbon groups, di- or trimethylsilyl groups and mono- or polyorganosiloxanyl groups; R2 represents an alkoxy-substituted or unsubstituted alkyl group; and n represents an integer of 0 to 3, in the presence of a complex of platinum with an olefin or its derivative, said reaction being carried out further in the presence of an amino compound represented by the formula: wherein R3 represents monovalent groups which may be identical or different and are selected from the group consisting of hydrogen, alkyl groups and phenyl groups, at least one of which is an alkyl group or a phenyl group; Q represents a divalent group of the formula: STR1 of which two valences are bonded to the same N atom; and A represents O or S.
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