Functionalized p-phenylene sulfides Synthesis of new molecular wires
摘要:
Molecular wires containing p-phenylene sulfide units were synthesized. They could be used in material sciences and in supramolecular chemistry. Wires having 2 to 6 phenyl rings were functionalized at one end by an SH or Sh-le group, and at the other end, by an OH, OMe or OiPr groups. Formation of Ar-S bonds in the chain was achieved by Pd- or Cu-catalyzed couplings of aromatic thiols with aromatic halides. Conditions for a clean chemoselective deprotection of thiols from thiomethyl groups were developed. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
Functionalized p-phenylene sulfides Synthesis of new molecular wires
摘要:
Molecular wires containing p-phenylene sulfide units were synthesized. They could be used in material sciences and in supramolecular chemistry. Wires having 2 to 6 phenyl rings were functionalized at one end by an SH or Sh-le group, and at the other end, by an OH, OMe or OiPr groups. Formation of Ar-S bonds in the chain was achieved by Pd- or Cu-catalyzed couplings of aromatic thiols with aromatic halides. Conditions for a clean chemoselective deprotection of thiols from thiomethyl groups were developed. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
[EN] PIPERIDINE-BASED STABILIZERS AND POLYMERS END-CAPPED WITH THE SAME<br/>[FR] STABILISANTS À BASE DE PIPÉRIDINE ET POLYMÈRES FONCTIONNALISÉS AVEC CEUX-CI PAR TRAITEMENT DE "END CAPPING"
申请人:SOLVAY SPECIALTY POLYMERS USA
公开号:WO2015176978A1
公开(公告)日:2015-11-26
The invention relates to piperidine-based compounds of formula (I) that are used to improve UV, thermal, and thermo-oxidative stability of high performance aromatic polymers in a blend or as end-cappers of the same polymers.
Hydroxybenzophenone-based stabilizers and polymers end-capped with the same
申请人:SOLVAY SPECIALTY POLYMERS USA, LLC
公开号:US20170240723A1
公开(公告)日:2017-08-24
The invention relates to hydroxybenzophenone-based compounds of formula (I) that are used to improve UV, thermal, and thereto-oxidative stability of high performance aromatic polymers in a blend or as end-cappers of the same polymers.
A piperidine-based stabilizer compound of formula (I) or (II) that imparts UV, thermal, and/or thermo-oxidative stability to polymer compositions and more specifically to aromatic polymers and polymer compositions thereof.
A piperidine-based stabilizer compound of formula (I) or (II) that imparts UV, thermal, and/or thermo-oxidative stability to polymer compositions and more specifically to aromatic polymers and polymer compositions thereof.
一种式 (I) 或 (II) 的哌啶基稳定剂化合物,可赋予聚合物组合物,特别是芳香族聚合物及其聚合物组合物紫外线稳定性、热稳定性和/或热氧化稳定性。
Piperidine-based stabilizers and polymers end-capped with the same
申请人:SOLVAY SPECIALTY POLYMERS USA, LLC
公开号:US11111215B2
公开(公告)日:2021-09-07
The invention relates to piperidine-based compounds of formula (I) that are used to improve UV, thermal, and thermo-oxidative stability of high performance aromatic polymers in a blend or as end-cappers of the same polymers.