[EN] NOVEL SUBSTITUTED FLAVAN DERIVATIVES AND PROCESS FOR THE PREPARATION THEREOF<br/>[FR] NOUVEAUX DÉRIVÉS DE FLAVANE SUBSTITUÉS ET LEUR PROCÉDÉ DE PRÉPARATION
申请人:AZISTA INDUSTRIES PRIVATE LTD
公开号:WO2021255512A1
公开(公告)日:2021-12-23
The present invention relates to novel substituted flavan derivatives of the Formula (I). The present invention also relates to a process for the preparation of phthalonitrile or cyanate ester flavan derivatives. The present invention also relates to use of novel substituted flavan derivatives to produce polymer composite materials.
A new room-temperature liquid, high-performance tricyanate ester
作者:Lee R. Cambrea、Matthew C. Davis、Thomas J. Groshens、Andrew J. Guenthner、Kevin R. Lamison、Joseph M. Mabry
DOI:10.1002/pola.24246
日期:2010.10.15
A newtricyanateester monomer of a tris(4‐hydroxyphenyl)benzene derivative was synthesized in 6‐steps with a 63% overall yield. The geminal substitution of phenyl rings on ethane, in addition to the creation of a racemic/diastereomeric mixture, resulted in a liquid monomer whereas compounds with similar structure and symmetry have melting points typically over 100 °C. Key properties of the polycyanurate
A method for making liquid cyanate esters and liquid cyanate esters. Embodiments of the invention address the problems with solid cyanate esters by creating new cyanate ester structures that are liquid at room temperature. These liquid cyanate esters may be useful for the typical composite fabrication methods including, but not limited to, infusion molding, prepeg consolidation, resin and vacuum transfer molding.