Method for purifying electroluminescent material, electroluminescent material and electroluminescent device
申请人:Tsuda Yoshihiro
公开号:US20060247474A1
公开(公告)日:2006-11-02
Objects of the present invention are to provide a purification process that enables Pd to be removed effectively, and to provide an electroluminescent material and an electroluminescent device obtained by employing the process. The present invention relates to a process for purifying an electroluminescent material, the process involving treating, with a phosphorus-containing material, an electroluminescent material that contains Pd as an impurity so as to remove the Pd.
Olefin polymerisation catalysts and processes for producing olefin polymers
申请人:TOSOH CORPORATION
公开号:EP0849292A1
公开(公告)日:1998-06-24
Catalysts for olefin polymerization which consist essentially of a transition metal compound, a modified clay compound and an organic aluminum compound, wherein the modified clay compound comprises a reaction product of a clay mineral and a proton acid salt of a specific amine compound, as well as a method of polymerizing olefins using such catalysts. It is possible thereby to obtain olefin polymers with high productivity and low ash content.
There is provided a silicon compound represented by Formula (1) :
wherein A is a group represented by Formula, (2-1):
wherein Z1 is an alkylene having 3 to 20 carbon atoms, and arbitrary -CH2- in this alkylene may be replaced by -O-; R3 is hydrogen, an alkyl having 1 to 20 carbon atoms, an aryl having 6 to 20 carbon atoms, or an arylalkyl having 7 to 20 carbon atoms; R4 is an alkyl having 1 to 20 carbon atoms, an aryl having 6 to 20 carbon atoms, or an arylalkyl having 7 to 20 carbon atoms; and X1 is a halogen, and
a process for producing said silicon compound represented by Formula (1-1).
The present invention relates to a novel silicon compound characterized by having a polymerization-initiating ability to polymerizable monomers and a polymer obtained using the same. Provided is a so-called organic-inorganic composite material of cage type silsesquioxane in which an organic substituent is bonded to a silicon atom and an organic polymer. A preparing method thereof is mixing with an organic polymer or copolymerization making use of a polymerizable functional group of cage type silsesquioxane. However, it is considered to be very difficult to evenly disperse an inorganic component in an organic polymer in either method and maintain characteristics thereof.
The present invention provides a silicon compound represented by Formula (1):
in Formula (1), A
1
is a group having a polymerization-initiating ability to a monomer; R
1
is alkyl having 2 to 10 carbon atoms; in these alkyls, at least one hydrogen may be replaced by halogen; one —CH
2
— may be replaced by —O—; one hydrogen may be replaced by an aromatic group or an alicyclic group; this aromatic group or alicyclic group may have a substituent; R
2
and R
3
are independently alkyl having 1 to 8 carbon atoms, phenyl or cyclohexyl; n is an integer of 2 to 30; e is 0 or 1; a is an integer of 1 to 2
n
; b is an integer of 0 to (2
n
−1); c is an integer of 0 to (2
n
−1); and the total of a, b and c is 2
n
. The preferred examples of A
1
are a group having halogenated alkylphenyl, a group having an MgBr group and a group having a dithiocarbamate group.
If initiating the polymerization of, for example, an acrylic monomer with this silsesquioxane derivative acting as a starting point, a very homogeneous organic-inorganic composite material is obtained without causing coagulation of silsesquioxane, and therefore problems in conventional methods are solved.
本发明涉及一种新型硅化合物,其特点是对可聚合单体具有聚合引发能力,以及使用该化合物获得的聚合物。本发明提供了一种所谓的有机-无机复合材料,即有机取代基与硅原子键合的笼型硅倍半氧烷和有机聚合物。其制备方法是与有机聚合物混合或利用笼型硅倍半氧烷的可聚合官能团进行共聚。然而,无论采用哪种方法,都很难将无机成分均匀分散在有机聚合物中并保持其特性。
本发明提供了一种由式(1)表示的硅化合物:
式(1)中,A
1
是对单体具有聚合引发能力的基团;R
1
是具有 2 至 10 个碳原子的烷基;在这些烷基中,至少有一个氢可以被卤素取代;一个 -CH
2
- 可被-O-取代;一个氢可被芳香基团或脂环基团取代;该芳香基团或脂环基团可带有取代基;R
2
和 R
3
独立地为具有 1 至 8 个碳原子的烷基、苯基或环己基; n 为 2 至 30 的整数; e 为 0 或 1; a 为 1 至 2 的整数
n
b 是 0 至(2
n
-1)的整数;c 是 0 至(2 n
n
-1)的整数;a、b 和 c 的总和为 2
n
.A
1
是具有卤代烷基苯基的基团、具有硼酸镁基团的基团和具有二硫代氨基甲酸酯基团的基团。
如果以这种硅倍半氧烷衍生物为起点,启动丙烯酸单体等的聚合反应,就可以得到非常均匀的有机-无机复合材料,而不会引起硅倍半氧烷的凝结,从而解决了传统方法中存在的问题。