First Pre-Functionalised Polymeric Aromatic Framework from Mononitrotetrakis(iodophenyl)methane and its Applications
作者:Ester Verde-Sesto、Mercedes Pintado-Sierra、Avelino Corma、Eva M. Maya、Jose G. de la Campa、Marta Iglesias、Felix Sánchez
DOI:10.1002/chem.201304163
日期:2014.4.22
Starting frommononitrotetrakis(iodophenyl)methane as monomer, we report the preparation of the first pre‐functionalised porous aromaticframeworks (PAFs) and their application as supports for organometallic catalysts. Neutral coordinate imino‐pyridine Schiff base (PAF‐NPy) or chiral bis‐amino (PAF‐NPro) ligands were obtained by post‐synthetic treatment of PAF‐NH2 and treated with copper(I) or rhodium(I)
Components and catalysts for the polymerization of olefins
申请人:——
公开号:US20040014595A1
公开(公告)日:2004-01-22
The present invention relates to a solid catalyst component for the polymerization of olefins CH
2
═CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from maleates of a particular formula. Said catalyst components when used in the polymerization of olefins, and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.
Process for the preparation of a diester of a dicarboxylic acid
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0231044A2
公开(公告)日:1987-08-05
Process for the preparation of dicarboxylate esters by reacting an optionally substituted ethylenically or acetylenically unsaturated hydrocarbon having two carbon atoms less than said dicarboxylic acid, CO and an alcohol in the presence of a Group 8 noble metal or a compound thereof and of a quinone. The process includes the preparation of diesters of 2-butenedioic acids derived from acetylenically unsaturated hydrocarbons.
制备二羧酸酯的工艺:在第 8 族贵金属或其化合物以及醌的存在下,使具有比所述二羧酸少两个碳原子的任选取代的乙烯基或乙炔基不饱 和烃与 CO 和醇反应。 该工艺包括制备从乙炔基不饱和烃衍生的 2-丁烯二酸二酯。
STYRENIC COPOLYMER AND PRODUCTION THEREOF
申请人:IDEMITSU KOSAN COMPANY LIMITED
公开号:EP0511407A1
公开(公告)日:1992-11-04
A styrenic copolymer having at least one structural unit represented by general formula (I) and either a structural unit represented by general formula (II) or a structural unit represented by general formula (IX), the content of the unit (II) or the unit (IX) being 0.01 to 99.9 mole %. In these formulae each symbol is as defined in the specification. This copolymer is highly syndiotactic in the stereoregularity of the chain composed of the structural units (I) and is excellent in the adhesion and compatibility with other resins.
VINYL ALCOHOL POLYMER, THICKENER, STABILIZER FOR EMULSION POLYMERIZATION, STABILIZER FOR SUSPENSION POLYMERIZATION, COATING AGENT, COATING, SIZING AGENT FOR FIBERS, AND METHOD FOR PRODUCING SIZED YARN AND TEXTILE
申请人:Kuraray Co., Ltd.
公开号:EP3045480A1
公开(公告)日:2016-07-20
Provided by the present invention is a PVA having highly harmonized adequate water solubility, thickening property and coating film strength, and having superior storage stability in terms of the viscosity in an aqueous solution. A vinyl alcohol polymer having a ratio (Mw (A)/Mn (A)) of the weight average molecular weight (Mw (A)) to the number average molecular weight (Mn (A)) of 3 or greater and 8 or less, and being capable of giving a vinyl alcohol polymer having a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn) of 2 or greater and less than 3 when treated at 40 °C for 1 hour in a sodium hydroxide solution.