摘要:
A compound having a non-silanol hydroxyl group and a compound having a silanol group are subjected to dehydrative condensation in the presence of a compound of formula (1), (2) or (3): MXn (1) ZaSiR1bR2cR3d (2) CmF2m+1SO3Y (3) wherein M is a metal, n is the valence of metal M, and X is halogen or CmF2m+1SO3; a=1 to 4, b, c and d=0 to 3, a+b+c+d=4, R1, R2 and R3 are monovalent hydrocarbon groups, Z is halogen or CmF2m+1SO3; Y is H or HW, W is an amine NR4R5R6 or a nitrogen-containing heterocyclic compound, R4, R5 and R6 are H or monovalent hydrocarbyl groups, and m=0 to 10. The method is effective in silylating the hydroxyl group without generating a substantial amount of harmful by-products such as hydrogen chloride or triethylamine hydrochloride.
摘要翻译:具有非硅烷醇羟基的化合物和具有硅烷醇基的化合物在式(1),(2)或(3)的化合物存在下进行脱水缩合:其中M是金属,n是 金属M的价数,X是卤素或C m F 2m + 1 SO 3; a = 1至4,b,c和d = 0至3,a + b + c + d = 4,R 1,R 2和R 3为一价烃基,Z为卤素或C m F 2m + 1SO3; Y是H或HW,W是胺NR 4 R 5 R 6或含氮杂环化合物,R 4,R 5和R 6是H或一价烃基 ,并且m = 0至10.该方法在不产生大量有害副产物如氯化氢或三乙胺盐酸盐的情况下对羟基进行甲硅烷基化是有效的。
摘要:
A novel monofunctional monomer having a cage oligosiloxane structure is represented by formula (1) wherein X is a polymerizable oxygen-containing C1-C40 group, R1 is a C1-C20 saturated hydrocarbon group, C6-C20 aromatic hydrocarbon group, C1-C20 organoxy group or halogen atom, and R is a non-polymerizable monovalent C1-C40 hydrocarbon group which is optionally halogenated. The monomer has improved compatibility with various solvents and polymerizable monomers. A method for preparing the same is also provided.
摘要:
A γ,δ-unsaturated carboxylic acid silyl ester is prepared by reacting an α,β-unsaturated carboxylic acid ester with a hydrosilane or hydrosiloxane in the presence of tris(pentafluorophenyl)borane. γ,δ-Unsaturated carboxylic acid derivatives are readily prepared through fewer steps and in high yields.
摘要:
A γ,δ-unsaturated carboxylic acid silyl ester is prepared by reacting an α,β-unsaturated carboxylic acid ester with a hydrosilane or hydrosiloxane in the presence of tris(pentafluorophenyl)borane. γ,δ-Unsaturated carboxylic acid derivatives are readily prepared through fewer steps and in high yields.
摘要:
Alkoxysilane compounds having two fluoroalkyl groups and represented by the formula (1): wherein Rf and Rf′ are each a fluoroalkyl group of 1 to 10 carbon atoms, R1 is a hydrogen atom or an aliphatic monovalent hydrocarbon group of 1 to 6 carbon atoms, R2 and R3 are each methyl group or ethyl group, X and Y are each an ether linkage or an ester linkage, a and b are each 0 or 1, m, n and p are each an integer of 0 to 6, q is an integer of 1 to 6, and r is an integer of 0 to 2. By treating an inorganic material with the alkoxysilane compound having ether linkage and two fluoroalkyl groups, high water and oil repellency and high sliding properties are imparted to the inorganic material. The alkoxysilane compounds are easily purified, owing to enhanced volatility by the branched structure.
摘要:
A solid material is subjected to surface treatment by chemically bonding onto a surface of the solid material a stabilized monofunctional silanol represented by R1R2R3SiOH. R1, R2 and R3 may be the same or different, and each represent a substituent group independently selected from a substituted or unsubstituted, monovalent hydrocarbon group having from 1 to 40 carbon atoms or a substituted or unsubstituted, monovalent heterocyclic group having from 1 to 100 carbon atoms. The monofunctional silanol has a dehydrative self-condensation rate lower than triethylsilanol.
摘要翻译:通过在固体材料的表面上化学键合由R1R2R3SiOH表示的稳定的单官能硅烷醇,对固体材料进行表面处理。 R 1,R 2和R 3可以相同或不同,各自表示独立地选自具有1至40个碳原子的取代或未取代的一价烃基或具有1至100个取代或未取代的1价杂环基的取代基 碳原子。 单官能硅烷醇具有低于三乙基硅烷醇的脱水自缩缩速率。
摘要:
A method for producing an isocyanate group-containing siloxane compound is provided. In this method, a halogenated siloxane compound represented by the following general formula (1): or the following general formula (2) wherein R1, R2, R3, and R4 are independently hydrogen atom, a monovalent hydrocarbon group containing 1 to 8 carbon atoms, or a siloxy group represented by OSiR5R6R7 wherein R8, R6, and R7 are a monovalent hydrocarbon group containing 1 to 8 carbon atoms, X is a halogen atom, n is an integer of 1 to 10, a is 0, 1, or 2, and b is an integer of 2 to 9; is reacted with a cyanate salt represented by the following general formula (3): Mm+(OCN)m (3) wherein M represents an alkali metal or an alkaline earth metal, and m is 1 or 2. The isocyanate group-containing siloxane compound produced is represented by the following general formula (4): or the following general formula (5): wherein R1, R2, R3, R4, n, q, and a are as defined above.
摘要翻译:提供含异氰酸酯基的硅氧烷化合物的制造方法。 在该方法中,由以下通式(1)表示的卤代硅氧烷化合物或其中R 1,R 2,R 3和R 4独立地为氢原子,含有1至8个碳原子的一价烃基的通式(2) 或由OSiR 5 R 6 R 7表示的甲硅烷氧基,其中R 8,R 6和R 7为含有1至8个碳原子的一价烃基,X为卤素原子,n为1至10的整数,a为0,1或2 ,b为2〜9的整数。 与由以下通式(3)表示的氰酸盐反应:<?in-line-formula description =“In-line formula”end =“lead”?> Mm +(OCN)m(3) line-formula description =“In-line Formulas”end =“tail”?>其中M表示碱金属或碱土金属,m为1或2.含异氰酸酯基的硅氧烷化合物由以下 通式(4):或以下通式(5):其中R1,R2,R3,R4,n,q和a如上定义。
摘要:
By reacting α,β-unsaturated carboxylic esters with hydrosilanes or hydrosiloxanes in the presence of a catalytic amount of tris(pentafluorophenyl)borane, silyl ketene acetals or disilyl ketene acetals with high purity are produced in high yields.
摘要:
An industrially acceptable process for preparing 2-[tris(trimethylsilyl)silyl]ethyl (meth)acrylate in high yields involves reacting 2-[tris(trimethylsilyl)silyl]ethyl acetate with an alcohol in the presence of a catalyst to form 2-[tris(trimethylsilyl)silyl]ethanol, then reacting it with a (meth)acrylate ester.
摘要:
Disclosed are silazane compounds having two fluoroalkyl groups, represented by the following general formula (1): wherein Rf and Rf′ are each a fluoroalkyl group, R1 is a hydrogen atoms or an aliphatic monovalent hydrocarbon group, R2 and R3 are each an aliphatic monovalent hydrocarbon group, R4 is a hydrogen atom or an aliphatic monovalent hydrocarbon group, a and b are each 0 or 1, m, n and p are each an integer of 0 to 6, q is an integer of 1 to 6, and r is 1 or 2. By treating an inorganic material with the silazane compound having two fluoroalkyl groups, high water and oil repellency and high sliding properties can be imparted to the inorganic material in good balance.