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.
Monocarboxylic acid esters of polymethylol phenols and process for preparing them
申请人:RESINOUS PROD &
公开号:US02265141A1
公开(公告)日:1941-12-09
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
[EN] POLYESTER AND POLYAMIDE COMPOSITIONS OF LOW RESIDUAL ALDEHYDE CONTENT<br/>[FR] COMPOSITIONS DE POLYESTER ET DE POLYAMIDE A FAIBLE CONTENU EN ALDEHYDE RESIDUEL
申请人:CIBA SC HOLDING AG
公开号:WO2003031507A2
公开(公告)日:2003-04-17
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.
Phenol quaternary ammonium derivatives: charge and linker effect on their DNA photo-inducible cross-linking abilities
We report here that phenol derivatives with two and four quaternary ammoniums were synthesized and their abilities to bind and cross-link DNA were investigated. Thermal denaturizing studies indicated that derivatives possess similar DNA binding abilities and gel electrophoresis revealed that more charges (series B) and electronic donation substitute linkers (like –S–) dramatically increase the DNA cross-linking abilities.
我们在此报告合成了含有两个和四个季铵的苯酚衍生物,并研究了它们与 DNA 结合和交联的能力。热变性研究表明,这些衍生物具有相似的 DNA 结合能力,凝胶电泳显示,更多的电荷(B 系列)和电子捐赠替代连接体(如 -S-)可显著提高 DNA 交联能力。