Polyester and polyamide compositions of low residual aldehyde content
申请人:Tinkl Michael
公开号:US20050176859A1
公开(公告)日:2005-08-11
A mixture of a polyester or a polyamide, such as poly(ethylene terephthalate) PET, and a suitable stabilizer selected from the group consisting of certain Mannich base compounds, when extrusion compounded exhibits a lower residual acetaldehyde content than does PET or polyamide alone when similarly treated. The invention pertains to any polyester or polyamide used in the manufacture of molded articles, fibers, or films, for instance bottles or containers which are used to store consumer materials, for example food, beverages and water.
Studies on the active species in olefin polymerisation generated from phenoxo-amido titanium “chiral-at-metal” compounds
作者:Giuseppe Alesso、Vanessa Tabernero、Marta E.G. Mosquera、Tomás Cuenca
DOI:10.1016/j.jorganchem.2011.02.011
日期:2011.6
5-tBu2C6H2-2-OH) (R = C6H5 1a, p-MeC6H4 1b, Cy 1c; Cy = cyclohexyl) with 1 equiv of TiCp∗Cl3 (Cp∗ = η5-C5Me5) in the presence of 2.5 equiv of NEt3 in pentane or hexane at room temperature gives the monocyclopentadienyl phenoxo-amido monochloro complexes [TiCp∗RN-CH2-(3,5-tBu2C6H2-2-O)}Cl] (R = C6H5 2, p-MeC6H4 4, Cy 5). In a more polar solvent the phenoxo-amino complex [TiCp∗(C6H5)(H)N–CH2-(3,5-tBu2C6H2-2-O)}Cl2]
用1当量处理RHN-CH 2-(3,5-tBu 2 C 6 H 2 -2-OH)(R = C 6 H 5 1a,p-MeC 6 H 4 1b,Cy 1c ; Cy =环己基)合成TiCP *的Cl 3(CP * =η 5 -C 5我5)在2.5当量网的存在3在室温下戊烷或己烷给出单环戊二烯基phenoxo酰氨基单氯配合物[合成TiCP * RN-CH 2 - (3,5-tBu 2 C 6 H 2 -2-O)} Cl](R = C 6 H5 2,p-MeC 6 H 4 4,Cy 5)。在极性更大的溶剂中,苯氧羰基氨基络合物[TiCP * ((C 6 H 5)(H)N – CH 2-(3,5-tBu 2 C 6 H 2 -2-O)} Cl 2 ](3)是从与1a的反应中获得的。TiCP * Cl 3与tBu(H)N – CH 2-(3,5-tBu 2 C 6 H 2 -2-OH)(1d)的反应提供了络合物[TiCP
POLYESTER AND POLYAMIDE COMPOSITIONS OF LOW RESIDUAL ALDEHYDE CONTENT
申请人:Ciba Specialty Chemicals Holding Inc.
公开号:EP1440117A2
公开(公告)日:2004-07-28
PROCESS FOR THE PREPARATION OF OPTIONALLY SUBSTITUTED PHENYL AND PYRIDYL PYRROLIDINES