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:
Silyl (meth)acrylate compounds each having attached to a silicon atom one very bulky tertiary hydrocarbon group and two branched hydrocarbon groups each having a hydrocarbon group at &agr;- or &bgr;-position or two cyclic hydrocarbon groups are very stable to hydrolysis and are useful raw materials from which hydrolyzable, self-erodible polymers for ship bottom paints are prepared.
摘要:
Dimethylchlorosilane and a triorganochlorosilane of the formula: R.sup.1 R.sup.2 R.sup.3 SiCl wherein R.sup.1, R.sup.2, and R.sup.3 are independently selected from monovalent hydrocarbon groups are concurrently prepared by reacting dimethyldichlorosilane with a SiH bond-containing silane compound of the formula: R.sup.1 R.sup.2 R.sup.3 SiH in the presence of a Lewis acid catalyst. The method is especially effective for concomitant preparation of dimethylchlorosilane and trimethylchlorosilane or t-butyldimethylchlorosilane in an inexpensive, simple, safe manner and in high yields.
摘要翻译:二甲基氯硅烷和式R 1 R 2 R 3 SiCl其中R 1,R 2和R 3独立地选自一价烃基的三有机氯硅烷同时通过在路易斯酸催化剂存在下使二甲基二氯硅烷与下式的R 1 R 2 R 3 SiH的含SiH键的硅烷化合物反应制备: 。 该方法对于以廉价,简单,安全的方式并以高产率同时制备二甲基氯硅烷和三甲基氯硅烷或叔丁基二甲基氯硅烷是特别有效的。
摘要:
Novel silicon-containing polymers are obtained by copolymerizing a vinylsilane monomer with a compound having a low electron density unsaturated bond such as maleic anhydride, maleimide derivatives or tetrafluoroethylene. Using the polymers, chemical amplification positive resist compositions sensitive to high-energy radiation and having a high sensitivity and resolution at a wavelength of less than 300 nm and improved resistance to oxygen plasma etching are obtained.
摘要:
A branched tetrasiloxane is prepared by preforming a liquid mixture of a disiloxane compound, an alcohol and an acid catalyst, adding a trialkoxysilane compound to the mixture for reaction, and adding water to the reaction mixture for co-hydrolysis, thereby forming a branched tetrasiloxane. The method is capable of preparing a branched tetrasiloxane, especially methyltris(trimethylsiloxy)silane having a sufficiently high purity to use as cosmetic oil in good yields.
摘要:
Chlorosilane compounds having a thexyl group which is a bulky substituent group are novel. The compounds are useful silylating agents because stable silylated products are obtained due to the bulky substituent group.
摘要:
1,2-, 1,3- or 1,4-bis(3-aminopropyldimethylsilyl)benzene is prepared by effecting hydrosilylation reaction between N,N-bis(trimethylsilyl)allylamine and 1,2-, 1,3- or 1,4-bis(dimethylsilyl)benzene in the presence of a platinum catalyst, followed by detrimethylsilylation reaction. The process is simple and inexpensive to synthesize the end compound in high yields without forming isomers.
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:
By reacting a branched siloxane compound of formula (2) containing compounds of formula (1) as an impurity with a disiloxane compound of formula (3) in the presence of an acid compound, there is prepared a branched siloxane of formula (2) containing a reduced level of compounds of formula (1). R1nSi(OSiR23)3-n(OR3) (1) R1nSi(OSiR23)4-n (2) R23SiOSiR23 (3) R1 is a monovalent hydrocarbon group, R2 and R3 are H or monovalent hydrocarbon groups, and n is 0 or 1.
摘要:
By reacting a branched siloxane compound of formula (2) containing compounds of formula (1) as an impurity with a disiloxane compound of formula (3) in the presence of an acid compound, there is prepared a branched siloxane of formula (2) containing a reduced level of compounds of formula (1). R1nSi(OSiR23)3-n(OR3) (1) R1nSi (OSiR23)4-n (2) R23SiOSiR23 (3) R1 is a monovalent hydrocarbon group, R2 and R3 are H or monovalent hydrocarbon groups, and n is 0 or 1.