54208-63-8Relevant academic research and scientific papers
Well-Defined Networks from DGEBF - The Importance of Regioisomerism in Epoxy Resin Networks
Knox, Stephen T.,Wright, Anthony,Cameron, Colin,Fairclough, John Patrick Anthony
, p. 6861 - 6867 (2019/10/02)
The previously ignored or unreported impact of regiosomerism within diglycidyl ether of bisphenol F (DGEBF) on its network properties is presented. Routes to the isomers of DGEBF were explored: high-performance liquid chromatography showed good separation of the three isomers [para-para-DGEBF (ppDGEBF), para-ortho-DGEBF (poDGEBF), and ortho-ortho-DGEBF (ooDGEBF)] with small yields; column chromatography gave good separation of pp- + po- from oo-DGEBF but pp-/po- separation was not achieved. Synthesis was optimized to crude yields of 76% for pp-; 87% for po-, and 86% for oo-. Subsequently, crosslinked networks were prepared with meta-xylylenediamine. With increasing ortho content, degradation of chemical resistance and an inherent weakening of the network was observed, that is, glass transition temperature (Tg), beta transition temperature (Tβ), density, crosslink density, and the desorption diffusion coefficient decreased, whereas sorption diffusion coefficient and ultimate solvent uptake increased. This clearly shows that a subtle chemical structure change can significantly impact network performance.
PROCESS FOR PRODUCING EPOXY COMPOUND
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Page/Page column 6-7, (2012/02/06)
According to the present, invention, a process for producing an epoxy compound, where an epoxy compound can be selectively produced from olefins with good yield at low cost in a safe manner by a simple operation under mild conditions without using a quaternary ammonium salt or a metal compound, is provided. The present invention relates to a process for producing an epoxy compound, comprising epoxidizing a carbon-carbon double bond of an organic compound having a carbon-carbon double bond by using hydrogen peroxide as an oxidant, wherein the epoxidation is carried by out using an organic nitrile compound and an organic amine compound.
BISPHENOL DERIVATIVES AND THEIR USE AS ANDROGEN RECEPTOR ACTIVITY MODULATORS
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Page/Page column 183-184, (2011/08/03)
This invention provides bisphenol derivatives having a structure of formula I. Said compounds are modulators of the androgen receptor activity and are useful in the treatment of various diseases, including prostate cancer, breast cancer, ovarian cancer, endometrial cancer, acne, ovarian cysts, polycystic ovarian disease, age-related macular degeneration, precocious puberty, hirsutism and air loss.
