摘要:
In the method for the epoxidation of an olefin, the olefin is continuously reacted with hydrogen peroxide in a mixed reactor in the presence of a water soluble epoxidation catalyst, comprising a manganese complex, the reaction is carried out in a reaction mixture comprising an aqueous liquid phase and an organic liquid phase with mixing of the liquid phases, reaction mixture is continuously withdrawn from the mixed reactor and separated into a separated aqueous phase and a separated organic phase, and part of the separated aqueous phase is continuously recycled into the mixed reactor, with the combined hold-up time of aqueous phase in withdrawing, separating phases and recycling aqueous phase being kept at less than 15 minutes.
摘要:
An epoxy group-containing a fluorene compound has a methallyl group at the end thereof and is represented by the following general formula (1): wherein R represents a hydrogen atom or a methyl group. The compound gives a compound excellent in regioselectivity at the time of hydrosilylation with a Si—H containing organosilicon compound, with a less formed amount of an internally added β adduct, as compared with the conventionally known fluorene compound having an allyl group, so that heat resistance of the resulting organosilicon compound is expected to be improved whereby it is a useful compound.
摘要:
The present invention describes the use of an ionic liquid acid catalyst for the hydrolysis of cellulose into reducing sugars and other degradation products. The use of an ionic liquid catalyst for the hydrolysis of cellulose provides a low volatility catalyst and eliminates the hazards associated with the handling of mineral acids. Conditions such as temperature, catalyst modification, and ionic liquid solvent control the production of reducing sugars and other products. The combination of using an ionic liquid as the solvent for cellulose and ionic liquid catalyst provides an unprecedented tunability of the reaction properties giving more control over the conversion process to produce dehydration products with higher yields depending on the desired feedstock.
摘要:
A non-curable coating composition which uses a modified silicone having a functional group and can effectively prevent or reduce adhesion of sticky contamination substances to the surface of a substrate is provided. The non-curable coating composition contains a carboxy-modified silicone having carboxy-containing groups at side chains, and an epoxy/oxyalkylene-modified silicone having an epoxy-containing group and an oxyethylene-containing group at side chains, in a weight ratio ranging from 1:2 to 1:30.
摘要:
Ionic liquid epoxide monomers capable of reacting with cross-linking agents to form polymers with high tensile and adhesive strengths. Ionic liquid epoxide monomers comprising at least one bis(glycidyl) N-substituted nitrogen heterocyclic cation are made from nitrogen heterocycles corresponding to the bis(glycidyl) N-substituted nitrogen heterocyclic cations by a method involving a non-nucleophilic anion, an alkali metal cation, epichlorohydrin, and a strong base.
摘要:
Disclosed is a process for the preparation of emulsifiers E1 which are obtained by (a) reacting a polyol with propylene oxide or a mixture of ethylene oxide and propylene oxide, to give an intermediate Z1, (b) reacting the intermediate Z1 with epichlorohydrin, forming an intermediate Z2, (c) reacting the intermediate Z2 with an adduct of ethylene oxide or a mixture of ethylene oxide and propylene oxide, with a C1-C22 monoalcohol, provided that on average at least one epoxide function of the intermediate Z2 is reacted and on average at least one epoxide function originating from the intermediate Z2 is retained. Compounds E1 are suitable as emulsifiers for preparing aqueous emulsions or dispersions of epoxy resins.
摘要:
This invention concerns novel substituted unsaturated tetracyclic tetrahydrofuran derivatives with binding affinities towards serotonine receptors, in particular 5-HT2A and 5-HT2C receptors, and towards dopamine receptors, in particular dopamine D2 receptors and with norepinephrine reuptake inhibition properties, pharmaceutical compositions comprising the compounds according to the invention, the use thereof as a medicine, in particular for the prevention and/or treatment of a range of psychiatric and neurological disorders, in particular certain psychotic, cardiovascular and gastrokinetic disorders and processes for their production.The compounds according to the invention can be represented by general Formula (I) and comprises also the pharmaceutically acceptable acid or base addition salts thereof, the stereochemically isomeric forms thereof, the N-oxide form thereof and prodrugs thereof, wherein all substituents are defined as in claim 1.
摘要:
Disclosed is a method for the reduction of residual peroxides in vegetable oils, preferably epoxidized vegetable oils using a phosphorous compound preferably alkyl/aryl substituted phosphite compounds or hypophosphorous acid and its derivatives.
摘要:
The present invention has its object to provide a liquid-form modified product of polyhedral polysiloxane which is excellent in moldability and transparency, and a composition produced using the modified product. In addition, the present invention can provide an easy-to-handle modified product and composition. The present invention provides a modified product of polyhedral polysiloxane which is obtainable by modifying a polyhedral polysiloxane compound (a) with a compound (b), and a composition containing the modified product. The polyhedral polysiloxane compound (a) has an alkenyl group and/or a hydrosilyl group, and the compound (b) has a hydrosilyl group and/or an alkenyl group each capable of hydrosilylation with the component (a).
摘要:
An object of the present invention is to provide a cyclohexene oxide compound that gives a cured resin having a low refractive index and excellent transparency, curability, mold release properties, and mechanical properties, and that can be used as a component of an actinic radiation curing composition and/or heat curing composition.The present invention is a cyclohexene oxide compound having a cyclohexyl group or a long-chain alkyl group, represented by Formula (1) below (in Formula (1), A denotes a cyclohexyl group, Formula (2) below, or an optionally branched alkyl group having 8 to 16 carbons) (in Formula (2), R1 denotes a hydrogen atom or an optionally branched alkyl group having 1 to 4 carbons and R2 denotes a hydrogen atom or an optionally branched alkyl group having 1 to 4 carbons).