3437-84-1Relevant academic research and scientific papers
Reactions of alkyl radicals with substituted toluenes and the effect of substituents on dissociation energies of benzyl C-H bonds
Arafat, Abdelfattah M.,Mathew, Samuel K.,Akintobi, Solademi O.,Zavitsas, Andreas A.
, p. 2226 - 2242 (2006)
Reactions of isopropyl and of undecyl radicals with meta- and para-substituted toluenes are reported. The results demonstrate that the reactivities of toluenes are due to both benzyl-H abstraction and addition of the alkyl radicals to the aromatic ring. Relative reactivities yield curved Hammett plots, consistent with kinetic data reported by Dutsch and Fischer. Abstractions and ring additions occur with comparable rates, but opposite Hammett slopes. Addition is favored by electron-withdrawing and abstraction by electron-donating substituents. The effects of substituents on the dissociation energies of benzyl C-H bonds are shown to be the major factor influencing reaction rates for benzyl-H abstraction by alkyl radicals.
PROCESS FOR THE PRODUCTION OF DIACYL PEROXIDES
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Page/Page column 13-14, (2020/12/30)
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.
ONLINE CONTINUOUS FLOW PROCESS FOR THE SYNTHESIS OF ORGANIC PEROXIDES USING HYDROGEN PEROXIDE AS RAW MATERIAL
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Paragraph 0294, (2020/06/29)
An online continuous flow production process for directly preparing organic peroxides by using hydrogen peroxide as a raw material. This production process uses hydrogen peroxide, catalyst, and an oxidation substrate as a raw material. Substrate will be turned to designated peroxides sequentially through oxidation and workup. This process is performed in a plug-and-produce integrated continuous flow reactor, and the raw materials are continuously fed to the reactor. So, specified peroxide can be continuously obtained at the outlet of the plug-and-produce integrated continuous flow reactor.
Method for continuously producing diisobutyryl peroxide through multipoint feeding and reinforced mixing
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Paragraph 0025-0060, (2020/05/14)
The invention discloses a method for continuously producing diisobutyryl peroxide by multi-point feeding and enhanced mixing. The method comprises the following steps: (1) continuously feeding a hydrogen peroxide aqueous solution and an alkaline aqueous solution stream 1 into a first flow reactor to carry out salt forming reaction; (2) reacting the reaction solution obtained in the step (1) and acontinuously added isobutyryl chloride solution stream 1 for generating IBP in a second flow reactor; (3) feeding the reaction solution obtained in the step (2) and a continuously added aqueous alkalistream 2 into a third flow reactor for salt forming reaction; and (4) reacting the reaction solution obtained in the step (3) and the continuously added isobutyryl chloride solution stream 2 for generating IBP in a fourth flow reactor; wherein the IBP is abbreviation of diisobutyryl peroxide. According to the method disclosed by the invention, side reactions such as acyl chloride hydrolysis can be obviously reduced, the IBP yield is improved, and reaction heat is removed in time, so that the whole reaction is carried out under safe and environment-friendly continuous conditions.
PROCESS FOR THE PRODUCTION OF DIACYL PEROXIDES
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Page/Page column 15; 16, (2020/12/30)
Process for the production of a diacyl peroxide involving the reaction of an anhydride with an aldehyde and oxygen, removal of the formed carboxylic acid, production of an anhydride from said carboxylic acid, and recycling of the anhydride within the process.
POLYMERIZATION METHOD INCLUDING DIACYL PEROXIDES
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Paragraph 0064, (2017/01/02)
PROBLEM TO BE SOLVED: To provide a method to make and use specific diacyl peroxides in polymerization reactions. SOLUTION: In a peroxidation process, an aqueous mixture comprising specific diacyl peroxides is made by reacting at least one kind of specific acid halides and i) MOOH/M2O2 in an aqueous phase. The method includes the steps of: bringing acid halides or a mixture of acid halides only essentially into contact with water comprising MOOH/M2O2 and/or at least one kind of peracids or salt of peracids; transferring the aqueous mixture comprising the specific diacyl peroxide from the above mentioned step into a reactor for polymerization; and pyrolyzing the specific diacyl peroxide in the presence of vinyl chloride to generate organic free radicals and polymerizing the vinyl chloride in the reactor for polymerization, wherein a reactor in which the peroxidation process is carried out is connected with the reactor for polymerization directly. COPYRIGHT: (C)2015,JPO&INPIT
Safe diacyl peroxide solution compositions
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, (2008/06/13)
A safe peroxide solution composition consisting essentially of a diacyl peroxide having 1-5 carbon atoms in each aliphatic group and an aliphatic hydrocarbon, ketone, ester, ether, or alcohol characterized by a vapor pressure substantially that of the peroxide. Example: Equal parts by weight of diacetyl peroxide and ethyl butyl ketone.
