Synthesis, Structures, and Reactivity of Weakly Coordinating Anions with Delocalized Borate Structure: The Assessment of Anion Effects in Metallocene Polymerization Catalysts
作者:Jiamin Zhou、Simon J. Lancaster、Dennis A. Walker、Stefan Beck、Mark Thornton-Pett、Manfred Bochmann
DOI:10.1021/ja002820h
日期:2001.1.1
[CPh(3)][ClB(C(6)F(5))(3)] (2), [NHMe(2)Ph](2)[Ni[CNB(C(6)F(5))(3)](4)].2Me(2)CO (4b.2Me(2)CO), [CPh(3)](2)[Ni[CNB(C(6)F(5))(3)](4)].2CH(2)Cl(2) (4c.2CH(2)Cl(2)), and [CPh(3)](2)[Pd[CNB(C(6)F(5))(3)](4)].2CH(2)Cl(2) (5c.2CH(2)Cl(2)) are reported. The CN stretching frequencies in 4 and 5 are shifted by approximately 110 cm(-1) to higher wavenumbers compared to the parent tetracyano complexes in aqueous solution
SO.sub.2 is removed from a SO.sub.2 - containing gas mixture utilizing an aromatic amine as absorbent, followed by scrubbing the SO.sub.2 - depleted, aromatic amine - enriched gas with sulfurous acid solution to remove most of the gaseous aromatic amine therefrom and then with dilute sulfuric acid solution to remove substantially all of the small amount of residual gaseous aromatic amine from the gas. The aqueous scrubbing solutions containing aromatic amine sulfite and aromatic amine sulfate from the respective sulfurous acid and sulfuric acid scrubbing zones are combined and ammonia is added thereto, resulting in release of the aromatic amine and in the formation of ammonium sulfate. Aqueous solution containing the ammonium sulfate is introduced into the upper portion of the sulfurous acid scrubbing section.
Photopolymerizable compositions and image-forming materials using said compositions
申请人:KONICA CORPORATION
公开号:EP0089802A1
公开(公告)日:1983-09-28
A photopolymerizable composition comprises an organic solvent-soluble ethylenic unsaturated compound, an organic sblvent-dispersible, water-insoluble granular dispersion and an organic solvent-soluble photopolymerization initiator, mutually dissolved or dispersed in a solvent composed mainly of an organic solvent.
The photopolymerizable composition is developable with water in a short period of time, has high film strength and water resistance of a photosensitive layer, high lipophilic properties and superior film-forming capability, and can be used to produce highly sensitive resists and image-forming materials.
Tetrakis(fluoroaryl) borate/ether complexes and process for preparing the same
申请人:Nippon Shokubai Co., Ltd.
公开号:EP1400524A1
公开(公告)日:2004-03-24
The invention provides a tetrakis(fluoroaryl) borate/ether complex, and the process for preparing the same, The ether complex can be easily purified to a high purity and hence is suitable as an intermediate for the preparation of various tetrakis(fluoroaryl)borate derivatives.
Process for preparing tetrakis (fluoroaryl) borate derivatives
申请人:Nippon Shokubai Co., Ltd.
公开号:EP1400525A1
公开(公告)日:2004-03-24
The invention provides a tetrakis(fluoroaryl) borate/ether complex, a process for preparing the same, and a process for preparing a tetrakis(fluoroaryl)borate derivative (Ar4BZ) by using the ether complex and the compound capable of generating monovalent cationic species as starting compounds. The ether complex can be easily purified to a high purity and hence is suitable as an intermediate for the preparation of various tetrakis(fluoroaryl)borate derivatives.