- Synthesis and structure of 1,6-diaza-2,2-dimethoxy-2-silacyclooctane
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1,4-Diaza-8,8,8-trimethoxy-8-silaoctane (1) loses methanol upon heating and gives an eight-membered silatrane-like silaheterocyle, 1,6-diaza-2,2-dimethoxy-2-silacyclooctane (2).
- Ziche, Wolfgang,Ziemer, Burkhard,John, Peter,Weis, Johann,Auner, Norbert
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- Method for Attachment of Silicon-Containing Compounds to a Surface and for Synthesis of Hypervalent Silicon-Compounds
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A method for inducing a hypervalent state within silicon-containing compounds by which they can be chemically attached to a surface or substrate and/or organized onto a surface of a substrate. The compounds when attached to or organized on the surface may have different physical and/or chemical properties compared to the starting materials.
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- CURABLE COMPOSITION
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The present invention has its object to provide a curable composition which comprises a guanidine compound as a non-organotin type catalyst, is less discolored, has good surface curability, depth curability, strength rise and adhesiveness, and can retain the curability even after storage; the above object can be achieved by a curable composition which comprises: (A) an organic polymer containing a silyl group capable of crosslinking under siloxane bond formation, the silyl group being a group represented by the general formula (1): -SiX 3 (1) (wherein X represents a hydroxyl group or a hydrolyzable group and the three X groups may be mutually the same or different), (B) a guanidine compound (B-1) as a silanol condensation catalyst, and (C) a plasticizer, wherein the content of the component (B-1) is not lower than 0.1 part by weight but lower than 8 parts by weight per 100 parts by weight of the component (A), and a non-phthalate ester plasticizer accounts for 80 to 100% by weight of the (C) component plasticizer.
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- Fluorescent probe and fluorescence detecting method
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A fluorescent probe having a base sequence complementary to a specific sequence in a target nucleic acid, wherein the fluorescent probe has one end labeled with a nano particle fluorescent material, and the other end labeled with a fluorescent dye capable of fluorescence resonance energy transfer from the nano particle fluorescent material.
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- Method for detecting cancer using metal-oxide or metal-sulfide nanoparticle fluorescent material
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It is an object of the present invention to provide a nanoparticle fluorescent material for detecting cancer with which cancer can be detected with high sensitivity, using highly safe and broad light emission on a simple device. The present invention provides a nanoparticle fluorescent material which comprises a metal-oxide or metal-sulfide nanoparticle fluorescent material whose surface is modified by a surface modifying agent and whose half bandwidth of light emission is between 50 and 200 nm, wherein an antibody that recognizes cancer antigen is bound to the surface modifying agent.
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- Cleavage of cyclic organosilanes in the preparation of aminofunctional organoalkoxysilanes
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An aminofunctional organoalkoxysilane of formula I R2N—(CH2)y—Si(OR1)3?nR2n ??(I), wherein the R groups bonded to nitrogen are identical or different and each individual R group is hydrogen, an alkyl radical having from 1 to 4 carbon atoms, an aryl radical or an arylalkyl radical, R1 is an alkyl radical having from 1 to 8 carbon atoms or an aryl radical, R2 is an alkyl radical having from 1 to 8 carbon atoms or an aryl radical, y is 2, 3 or 4 and n is 0, 1 or 2, is prepared by a process comprising: reacting a chlorofunctional organoalkoxysilane of formula II Cl—(CH2)y—Si(OR1)3?nR2n ??(II), wherein R1, R2, y and n are as defined above, with ammonia or an organic amine of formula III HNR2 ??(III), wherein the two R groups are identical or different and each is defined as described above; separating organic amine hydrochloride or ammonium chloride by-product which is formed in the reaction; distilling the resulting crude product, thereby preparing an aminofunctional organoalkoxysilane or the product fraction of an aminofunctional organoalkoxysilane; and treating the aminofunctional organoalkoxysilane or the product fraction of an aminofunctional organoalkoxysilane with an alcohol.
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- Transetherification of organosilicon amines with cellosolve and trimethylsilanol
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Kinetics of transetherification of (3-aminopropyl)trimethoxysilane, [3-N-(2-aminoethyl)amino-propyl]trimethoxysilane, and (3-aminopropyl) triethoxysilana with Cellosolve and trimethylsilanol were studied. The example of [3-N-(2-aminoethyl)aminopropyl]trim
- Kovyazin,Nikitin,Kopylov,Sokol'skaya
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p. 1383 - 1387
(2007/10/03)
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- Method and apparatus for sunless tanning
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Apparatus for simulating skin tanning comprises a receptacle containing a fluid comprising dihydroxyacetone, a receptacle containing a fluid comprising a secondary polyamine, and dispensing means for simultaneously or sequentially providing desired amounts of dihydroxyacetone and polyamine.
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- Method and apparatus for preparing 3-[N-(2-aminoethyl)]aminopropylalkoxysilane
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The invention produces a 3-[N-(2-aminoethyl)]aminopropylalkoxysilane in high yields by reacting a 3-chloropropylalkoxysilane with ethylene diamine. A distillation pot is charged with ethylene diamine and heated above the boiling point of ethylene diamine for evaporating ethylene diamine, which is then condensed into a liquid. The liquid ethylene diamine is mixed for reaction with a 3-chloropropylalkoxysilane in such a proportion to give a molar ratio of ethylene diamine/3-chloropropylalkoxysilane of at least 12/1, thereby forming a 3-[N-(2-aminoethyl)]aminopropylalkoxysilane. The reaction solution is fed back to the pot where the unreacted ethylene diamine in the reaction solution is evaporated again and then condensed for use in a next cycle of reaction. The apparatus includes a distillation pot, a reflux condenser, a feed means and a reactor connected to form a recirculating system.
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- Hair fixatives
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A new composition of matter which is an aminofunctional silicone resin. The aminofunctional resin is formed by the reaction of an aminofunctional silane and a silicone resin. A hair treating composition is also disclosed which is a mixture of a film forming material and a solvent for the film forming material. The film forming material is the aminofunctional resin formed by reacting an aminofunctional silane and a silicone resin. A hair treating method for imparting curl retention to hair employing the resin as the film forming material is further described.
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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 the preparation of N-substituted aminoalkylsilanes
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N-substituted aminoalkylsilanes are obtained via a selective process which comprises reacting a cyanoalkylsilane with a primary or secondary amine in the presence of a heterogeneous hydrogenation catalyst selected from the group consisting of rhodium, platinum and palladium.
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- Reactive silicone hair setting compositions
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Reactive silicone hair setting compositions composed of isopropanol solutions containing at least one aminoalkylalkoxysilane and a titanate ester. Optional ingredients include hair conditioners and tetraalkoxysilanes. The compositions provide high set holding levels at high humidities.
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- Azido-silane compositions
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Azido-containing silane compositions of matter useful as coupling agents in the production of polymer composite articles.
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- Azido-silane compositions
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Azido-containing silane compositions of matter useful as coupling agents in the production of polymer composite articles.
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