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
—.
4′‐obb2− ligands, of which two function as monodentate ligands and the other as a bidentate ligand, and by two N atoms from bridging 4,4′‐bipy ligands, thereby forming a distorted octahedral CoN2O4 coordination geometry. Adjacent crystallographically equivalent CoII ions are bridged by the O atoms of 3,4′‐obb2− ligands, affording an eight‐membered Co2O4C2 ring which is further extended into a two‐dimensional
一种新的配位聚合物(CP),即聚[(μ-4,4'-联吡啶)(μ 3 -3,4'- oxydibenzoato)钴(II)],[CO(C 14 H ^ 8 ø 5)(C通过自组装Co(NO 3)2 ·6H 2制备10 H 8 N 2)] n或[Co(3,4'-obb)(4,4'-bipy)] n(1)O与很少使用的3,4'-氧二苯甲酸(3,4'-obbH 2)配体和4,4'-联吡啶(4,4'-联吡啶)在溶剂热条件下进行结构分析,并通过元素分析,红外光谱,单晶X射线晶体学和粉末X射线衍射(PXRD)进行了表征。X射线单晶衍射显示,每个Co II离子与来自三个3,4'-obb 2-配体的四个O原子六配位,其中两个用作单齿配体,另一个用作双齿配体,通过桥接4,4'-bipy配体形成两个N原子,从而形成扭曲的八面体CoN 2 O 4配位几何形状。相邻的晶体等效的Co II离子被3,4'-obb 2-配体的O原子桥接,提供了八元的Co2
BISPHENOL HAVING FLUORENE SKELETON, METHOD FOR PRODUCING SAME, POLYARYLATE RESIN, (METH)ACRYLATE COMPOUND AND EPOXY RESIN WHICH ARE DERIVED FROM THE BISPHENOL
申请人:TAOKA CHEMICAL CO., LTD.
公开号:US20190055180A1
公开(公告)日:2019-02-21
Provided are a bisphenol represented by the general formula (1), a method for producing the bisphenol, and a polyarylate resin, a (meth)acrylate compound and an epoxy resin which are derived from the bisphenol. In the formula (1), R
1
to R
4
are the same or different, and each represent an alkyl group, an aryl group or a halogen atom, n
1
and n
2
are the same or different, and each represent an integer of 1 to 4, and k
1
to k
4
are the same or different, and each represent 0 or an integer of 1 to 4. When at least one of k
1
to k
4
is 2 or more, corresponding R
1
to R
4
may be the same or different.
Multifunctional crosslinking agent, crosslinked polymer, and method of making same
申请人:The United States of America, as represented by the Secretary of the Air Force
公开号:US10294255B1
公开(公告)日:2019-05-21
A multifunctional crosslinking agent, a crosslinked polymer, and a method of making the same are disclosed. The multifunctional crosslinking agent, which may be used to crosslink amine-terminated polyamides, polyimides, or poly(amide-imide)s, includes three or four anhydride functional groups. The multifunctional crosslinking agent may be defined by a general chemical formula (I): (Z—Ar—)n—W, wherein W represents an anhydride functional group that is directly or indirectly bonded to Ar; Ar represents an aryl group that is directly bonded to W; and n is equal to 3 when W is P═O or N, or n is equal to 4 when W is Si or a carbon moiety.
Isostructural lanthanide-based metal–organic frameworks: structure, photoluminescence and magnetic properties
作者:Li-Lin Luo、Xiang-Long Qu、Zheng Li、Xia Li、Hao-Ling Sun
DOI:10.1039/c7dt04024e
日期:——
4′-oba ligands. These complexes feature high chemical stabilities in common solvents, boiling water, and acidic (pH = 3) and alkaline (pH = 13) solutions and high thermalstability even up to 400 °C. The photoluminescence and magneticproperties were studied. Especially, 2 shows bright red emission with a high luminescence efficiency of 40.51%. We mainly discuss the luminescenceproperties of 2 in