reactivities of methacrylate monomers toward the attack of a radical, the copolymerizations of a series of nuclear-substituted phenyl methacrylates with styrene were investigated. From the results, the monomer reactivity ratios and the Alfrey-Price Q, and e values were determined. It was found that the relative reactivities toward the polystyryl radical were not correlated with the ordinary Hammett equation
为了阐明烷基取代基对甲基丙烯酸酯单体对自由基攻击的反应性的影响,研究了一系列核取代的甲基丙烯酸苯酯与苯乙烯的共聚反应。根据结果,确定了单体反应性比率和 Alfrey-Price Q 和 e 值。发现对聚苯乙烯基团的相对反应性与普通的哈米特方程无关,但通过包含取代基共振贡献项的修正哈米特方程获得了线性关系。因此,认为取代的甲基丙烯酸苯酯的反应性取决于由取代基引起的极性和共振效应。
Process for producing organic compound epoxy resin composition, cured article obtained from the epoxy resin, and semiconductor device obtained with epoxy resin
申请人:——
公开号:US20040260039A1
公开(公告)日:2004-12-23
There are disclosed a process for producing an organic compound in the presence of a particular substituted triarylphosphine compound, particularly, a process for producing an oxyalkylene derivative at a high yield using the above compound which is very active and easy to handle, by reacting an organic epoxy compound with a carboxylic acid ester, a carboxylic acid anhydride, a sulfonic acid ester or a carbonic acid ester, and an epoxy resin composition using a particular substituted triarylphosphine compound as a curing accelerator, a cured material of the composition and a semiconductor device using the composition.
Ink composition for electrostatic ink-jet recording and method of ink-jet recording
申请人:Kasai Seishi
公开号:US20050070630A1
公开(公告)日:2005-03-31
An ink composition for electrostatic ink-jet recording comprises: a dispersion medium; and a charged particle comprising a colorant, wherein the charged particle contains at least one of an onium salt compound and an onium salt group-containing polymer. A method of ink jet recording comprises an ink droplet of the ink composition by using an electrostatic field.
Aminoalkoxystyrene, process for preparation thereof, polymer thereof, process for producing the polymer and use thereof
申请人:Yamamoto Takashi
公开号:US20070213490A1
公开(公告)日:2007-09-13
An aminoalkoxystyrene represented by the formula (1)
wherein R
1
and R
2
are C
1-4
alkyl and n is 3-6. The aminoalkoxystyrene is prepared by reacting an aminoalkoxyphenylmagnesium halide with vinyl halide in the presence of a catalyst. A quaternized amino group-containing polymer made by quaternizing the amino groups of a polymer prepared from the aminoalkoxystyrene is useful as an anion exchanger.
Process for preparing an organic compound from an oxirane-containing
申请人:Mitsui Chemicals, Inc.
公开号:US06130346A1
公开(公告)日:2000-10-10
A process for preparing an organic compound, comprising conducting an organic reaction in the presence of a phosphine oxide represented by formula (1); ##STR1## where R.sup.1 is the same or different and each represents a hydrogen or hydrocarbon group with 1 to 10 carbon atoms, and x is the amount of water as a molar ratio which is 0 to 5.0, exhibiting a high catalytic performance especially in an organic reaction involving an alkylene oxide.