The present invention relates to curatives for epoxy resins, and compositions (e.g. adhesives) containing such resins cured using the same methods of preparation and uses therefor. More specifically, the present invention relates to hybrid curatives for epoxy resins comprising both aromatic amine, phenol and/or phenyl ester moieties. A further aspect of the current invention relates to new imidazole catalysts that possess a combination of excellent cure latency as well as low cure temperature onset.
Reaction of a copper(ii)–nitrosyl complex with hydrogen peroxide: putative formation of a copper(i)–peroxynitrite intermediate
作者:Apurba Kalita、Pankaj Kumar、Biplab Mondal
DOI:10.1039/c2cc31117h
日期:——
The reaction of a Cu(II)-nitrosyl complex (1) with hydrogen peroxide at -20 degrees C in acetonitrile results in the formation of the corresponding Cu(I)-peroxynitrite intermediate. The reduction of the Cu(II) center was monitored by UV-visible spectroscopic studies. Formation of the peroxynitrite intermediate has been confirmed by its characteristic phenol ring nitration reaction as well as isolation
First example of a Cu(<scp>i</scp>)–(η<sup>2</sup>-O,O)nitrite complex derived from Cu(<scp>ii</scp>)–nitrosyl
作者:Apurba Kalita、Pankaj Kumar、Ramesh C. Deka、Biplab Mondal
DOI:10.1039/c1cc16316g
日期:——
Copper(II) complex, 1, of the bidentate ligand, L [L = bis(2-ethyl-4-methyl-imidazol-5yl)methane] has been synthesized and structurally characterized. Addition of nitric oxide gas to a degassed acetonitrile solution of 1 yielded the corresponding copper(ii)-nitrosyl complex, 2. In acetonitrile, complex 2 on reaction with water afforded the corresponding copper(I)-nitrite complex, 3. Single crystal
THERMOSETTING HYPERBRANCHED COMPOSITIONS AND METHODS FOR USE THEREOF
申请人:Dershem Stephen M.
公开号:US20100041803A1
公开(公告)日:2010-02-18
Hyperbranched polymers and methods for preparing the same are disclosed. The polymers are obtained based on monomers synthesized via reacting a substituted or unsubstituted cyclic anhydride with a bifunctional amine.
HETERO-FUNCTIONAL COMPOUNDS AND METHODS FOR USE THEREOF
申请人:Dershem Stephen M.
公开号:US20100041845A1
公开(公告)日:2010-02-18
The invention provides hetero-functional compound compounds useful in a variety of adhesive applications. More particularly, the invention provides compounds bearing at least one electron rich olefinic bond and at least one electron poor olefinic bond, wherein the two olefinic bonds are separated by a C
3
to about C
500
aliphatic, cycloaliphatic, or aromatic spacer.