MODIFIER FOR AROMATIC POLYESTER AND AROMATIC POLYESTER RESIN COMPOSITION COMPRISING THE SAME
申请人:TABATA Masayoshi
公开号:US20110224343A1
公开(公告)日:2011-09-15
The present invention provides a modifier for aromatic polyesters which enhances the melt fluidity of aromatic polyesters without a significant decrease in the heat resistance of the aromatic polyesters, and an aromatic polyester resin composition including the modifier for aromatic polyesters. The present invention relates to a modifier for aromatic polyesters comprising polyhydric phenol residues and residues of aromatic polycarboxylic acid, acid halide or acid anhydride thereof, and the modifier comprises a material having a structure composed of a first residue selected from the group consisting of divalent residues represented by Formula (I): —Ar—W
1
x
—Ar— and by Formula (II): —Ar—, the first residues being bonded to two identical or different second residues selected from the group consisting of monovalent residues represented by Formula (III):
and monovalent residues represented by Formula (IV): —O—C(O)—R
7
—.
estimate of the acid strength of a compound, it has its limitations and is only strictly applicable within the confines of a series of closely similar compounds. The observed pKa values of a large series of polysubstituted phenols were correlated with the predicted values obtained from the Hammett relation, and good agreement obtained, even with substituted picricacids; styphnicacids appear to behave
1-(Nitratomethyl)-5<i>H</i>-tetrazole: A Highly Sensitive Ligand with Improved Oxygen Balance for Laser-Ignitable Coordination Compounds
作者:Moritz Kofen、Vanessa Braun、Simon M. J. Endraß、Thomas M. Klapötke、Jörg Stierstorfer
DOI:10.1021/acs.inorgchem.2c02805
日期:2022.10.31
For the first time, the highlysensitive 1-(nitratomethyl)-5H-tetrazole (1-NAMT) was synthesized, representing the shortest possible 1-(nitratoalkyl)-5H-tetrazole with a combined nitrogen and oxygen content of 81.4%. Compared to its related ethyl derivative, 1-(nitratoethyl)-5H-tetrazole, it exhibits improved oxygen balance, resulting in higher detonation parameters. 1-NAMT was thoroughly analyzed
首次合成了高灵敏度的 1-(硝基甲基)-5 H-四唑 (1-NAMT),代表了最短的 1-(硝基烷基)-5 H-四唑,氮氧含量为 81.4% . 与其相关的乙基衍生物 1-(硝基乙基)-5 H-四唑相比,它表现出改善的氧平衡,从而导致更高的爆轰参数。通过单晶衍射实验以及元素分析、红外光谱和多核 ( 1 H、13 C 和14N) 核磁共振测量。通过热重分析支持的差热分析分析 1-NAMT 的热行为。此外,合成并彻底分析了具有不同无机物(例如硝酸根、氯酸根和高氯酸根)和硝基芳族阴离子(例如苦味酸根和苯乙烯酸根)的 Cu 的高能配位化合物 (ECCs)。结果表明,与硝基芳族阴离子(T dec ~ 180 °C)形成 ECC 是改善 1-NAMT(125 °C)相当低的热稳定性的合适策略。
AROMATIC POLYESTER
申请人:Muroran Institute of Technology
公开号:EP2479203A1
公开(公告)日:2012-07-25
The present invention provides an aromatic polyester which is substantially free from the occurrence of coloration and retains significantly high transparency even after being thermally processed at high temperature and which has high flowability. The aromatic polyester contains a polyhydric phenol residue and a residue of any one of aromatic polycarboxylic acid, halide thereof, and anhydride thereof, and terminals of the aromatic polyester have a structure represented by the formula -C(O)-R. The aromatic polyester has an end-capping rate of 90% or higher and a weight average molecular weight (Mw) ranging from 3,000 to 1,000,000.