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 contaminated Group III metal hydrocarbon is purified by providing an adduct of Group III metal hydrocarbon with a Lewis base in a solvent having a boiling point which is up to 200° C., but at least 30° C. higher than the boiling point of the Group III metal hydrocarbon, separating the solvent from the adduct, and heating the adduct for thermal dissociation, thereby releasing the Group III metal hydrocarbon in high purity form.
摘要:
High-purity trimethylaluminum has the following impurity contents: organosilicon components≦0.5 ppm, chlorine components≦20 ppm, hydrocarbon components≦1,000 ppm, Ca≦0.05 ppm, Fe≦0.05 ppm, Mg≦0.05 ppm, Na≦0.05 ppm, Si (Si components other than the organosilicon components)≦0.07 ppm, Zn≦0.05 ppm, and S≦0.05 ppm. The high-purity trimethylaluminum can be obtained by removing impurities from crude trimethylaluminum through distillation and evaporation.
摘要:
A method of purifying an organometallic compound comprising distilling the organometallic compound for purification while blowing an inert gas through a vapor of the organopolysiloxane, thereby removing from the organometallic compound an impurity having a higher vapor pressure than the organometallic compound.
摘要:
High-purity trimethylaluminum has the following impurity contents: organosilicon components≦0.5 ppm, chlorine components≦20 ppm, hydrocarbon components≦1,000 ppm, Ca≦0.05 ppm, Fe≦0.05 ppm, Mg≦0.05 ppm, Na≦0.05 ppm, Si (Si components other than the organosilicon components)≦0.07 ppm, Zn≦0.05 ppm, and S≦0.05 ppm. The high-purity trimethylaluminum can be obtained by removing impurities from crude trimethylaluminum through distillation and evaporation.
摘要:
A contaminated Group III metal hydrocarbon is purified by providing an adduct of Group III metal hydrocarbon with a Lewis base in a solvent having a boiling point which is up to 200° C., but at least 30° C. higher than the boiling point of the Group III metal hydrocarbon, separating the solvent from the adduct, and heating the adduct for thermal dissociation, thereby releasing the Group III metal hydrocarbon in high purity form.
摘要:
A method of purifying an organometallic compound comprising distilling the organometallic compound for purification while blowing an inert gas through a vapor of the organopolysiloxane, thereby removing from the organometallic compound an impurity having a higher vapor pressure than the organometallic compound.
摘要:
Trialkylgallium is prepared by reacting a gallium halide or alkyl gallium with trialkylaluminum in a solvent having a boiling point which is at least 10° C. higher than the boiling point of the trialkylgallium, such as mesitylene or o-dichlorobenzene. High purity alkyl gallium is obtained in high yields.