[EN] PHOTOCHROMIC AND ELECTROCHROMIC DIARYLETHENE COMPOUNDS WITH IMPROVED PHOTOSTABILITY AND SOLUBILITY<br/>[FR] COMPOSÉS DIARYLÉTHÈNE PHOTOCHROMIQUES ET ÉLECTROCHROMES PRÉSENTANT UNE PHOTOSTABILITÉ ET UNE SOLUBILITÉ AMÉLIORÉES
申请人:SWITCH MAT INC
公开号:WO2020198868A1
公开(公告)日:2020-10-08
A diarylethene compound reversibly convertible under photochromic and electrochromic conditions between a ring-open isomer of Formula (1A) and a ring-closed isomer of Formula (IB) wherein R5 is a substituted phenyl ring and Re is a substituted thiophene ring is provided. The photochromic-electrochromic diarylethene compound of Formula (1A)/(1B) have improved photochromic, electrochromic or photochromic and electrochromic properties, and is useful to provide variation of the light transmission properties of optical filters. The compound also possesses improved solubility making it suitable for incorporation in commercial products..
[EN] PROCESS FOR THE PRODUCTION OF DIACYL PEROXIDES<br/>[FR] PROCÉDÉ DE PRODUCTION DE PEROXYDES DE DIACYLE
申请人:NOURYON CHEMICALS INT BV
公开号:WO2020249688A1
公开(公告)日:2020-12-17
Process for the production of a diacyl peroxide involving the reaction of an anhydride with hydrogen peroxide, removal of the formed carboxylic acid, production of an anhydride from said carboxylic acid, and recycling of the anhydride within the process.
The present invention relates to an eggshell catalyst comprising an active metal selected from the group consisting of ruthenium, rhodium, palladium, platinum and mixtures thereof, applied to a support material comprising silicon dioxide, wherein the pore volume of the support material is 0.6 to 1.0 ml/g, determined by Hg porosimetry, the BET surface area is 280 to 500 m
2
/g, and at least 90% of the pores present have a diameter of 6 to 12 nm, to a process for preparing this eggshell catalyst, to a process for hydrogenating an organic compound which comprises at least one hydrogenatable group using the eggshell catalyst, and to the use of the eggshell catalyst for hydrogenating an organic compound.
Biphenyl Esters, Their Production and Their Use in the Manufacture of Plasticizers
申请人:ExxonMobil Chemical Patents Inc.
公开号:US20150361027A1
公开(公告)日:2015-12-17
A biphenyl diester useful as a plasticizer having the formula (I):
wherein R
1
is an alkyl group having 5 to 15 carbon atoms and R
2
is a methyl group or a phenyl group.
Compounds useful as plasticizers and the synthesis thereof are disclosed. In general, the invention includes mixed alkyl/aryl asymmetric cyclic diesters where the aryl and alkyl ester moieties are attached to a cyclic structure at vicinal carbons. The invention also includes synthetic processes of making such compounds. Blends of these asymmetric cyclic diesters with other plasticizers are demonstrated to be of use in plasticizing polymers.