PROCESS FOR PRODUCING 2-PROPYLHEPTYL ACRYLATE BY TRANSESTERIFICATION
申请人:Arkema France
公开号:US20160023985A1
公开(公告)日:2016-01-28
The invention relates to the industrial production of highly pure 2-propylheptyl acrylate with a high yield according to a process by transesterification, preferably in semi-continuous mode. The process according to the invention uses ethyl titanate in solution in 2-propylheptanol or 2-propylheptyl titanate as tranesterification catalyst, and implements a purification sequence comprising a single distillation column and a film evaporator.
An efficient and commercial phosphorylation process of a complex alcohol, such as secondary and tertiary alcohols, with P4O10 at high temperatures, and a product obtained by the process.
UV/VISIBLE-ABSORBING VINYLIC MONOMERS AND USES THEREOF
申请人:Novartis AG
公开号:US20170242274A1
公开(公告)日:2017-08-24
Described herein are UV-absorbing vinylic monomers and their uses in preparing UV-absorbing contact lenses capable of blocking ultra-violet (“UV”) radiation and violet radiation with wavelengths from 380 nm to 440 nm, thereby protecting eyes to some extent from damages caused by UV radiation and potentially from violet radiation.
The present invention relates to ionic silicone hydrogel contact lenses which comprise at least one pharmaceutical or nutriceutical component and are formed from reaction mixtures comprising a mixture of slow-reacting hydrophilic monomers, including at least one slow-reacting ionic monomer, at least one silicone-containing component and at least one hydroxyl-containing component, wherein the ratio of the slow-reacting hydrophilic component half lives to the silicone-containing component half life is at least 2.
[EN] ALKYL PHENYL ALKANOLS, DERIVATIVES THEREOF AND DETERGENT COMPOSITIONS COMPRISING SAME<br/>[FR] ALKYL-PHENYL-ALKANOLS, LEURS DERIVES, ET COMPOSITIONS DETERGENTES LES COMPRENANT
申请人:PROCTER & GAMBLE
公开号:WO2003099751A1
公开(公告)日:2003-12-04
Alkyl phenyl alkanols and alkyl phenyl alkanol derivatives having the formula: wherein R is C5-C30 linear or branched alkyl, and mixtures thereof; R1 and R2 are independently selected from linear or branched C1-C6 alkylene; Q is a hydrocarbon moiety containing between one and six carbon atoms; Y1 and Y2 are hydrogen, SO3M, and mixtures thereof; the index x is from 0 to 50; the index z is from 0 to 20; and M is an alkali metal, alkaline earth metal, organic counterion, ammonium, substituted ammonium or mixtures thereof, that provide enhanced primary biodegrability elative to conventional surfactants such as alkyl phenol ethoxylates.