摘要:
The use of a functionalized organosilicon compound as a coupling agent between an inorganic filler and an elastomer in an elastomer composition including an isoprene elastomer and a reinforcing inorganic filler is disclosed. The compound is selected among functionalized organosilicon compounds including at least one double bond C═C or C═N, and not including any C═C—C═O bonds or N═N bonds, and reacting with the isoprene units according to an electrocyclic reaction, in particular according to a standard cycloaddition reaction [2+1], [2+2], [3+2] or a Diels-Alder reaction [4+2] or an ene-synthesis reaction other than an ene-synthesis reaction between an isoprene unit and a C═C—C═O or N═N function. Also described, are elastomer composition(s) obtained and items manufactured using such compositions.
摘要:
The use of a functionalized organosilicon compound as a coupling agent between an inorganic filler and an elastomer in an elastomer composition including an isoprene elastomer and a reinforcing inorganic filler is disclosed. The compound is selected among functionalized organosilicon compounds including at least one double bond C═C or C═N, and not including any C═C—C═O bonds or N═N bonds, and reacting with the isoprene units according to an electrocyclic reaction, in particular according to a standard cycloaddition reaction [2+1], [2+2], [3+2] or a Diels-Alder reaction [4+2] or an ene-synthesis reaction other than an ene-synthesis reaction between an isoprene unit and a C═C—C═O or N═N function. Also described, are elastomer composition(s) obtained and items manufactured using such compositions.
摘要:
Functionalized organosilicon compounds (I), including at least one azo-activated structural unit, are prepared by: A. reacting at least one silane precursor (IV) with at least one hydrazo-precursor compound (V) to obtain hydrazine precursors (II) of such organosilicon compounds and B. oxidizing the hydrazine group of the precursors (II) to obtain precursors of the compounds (I), employing an oxidizer (NaOCl) and a base (NaOH), the oxidation being carried out in a biphase aqueous/organic medium, with the pH of the aqueous phase ranging from 3 to 11, such oxidation B being carried out directly in the reaction medium obtained from step A and containing the precursors (II), without isolating these precursors.
摘要:
Organomonoalkoxy/monohydroxy silanes, particularly halogenated or aklenylated organomonoalkoxy (or monohydroxy) silanes, which are useful intermediates in organic syntheses, are prepared by reacting an alkoxysilane with an organometallic compound suited for substituting at least certain of the alkoxy functions of the alkoxysilane with a monovalent hydrocarbon radical other than alkoxy and co-preparing a metallic alkoxylate by-product capable of denaturing the substituted silanes thus obtained, including contacting the metallic alkoxylate with at least one agent (A) reactive with the alkoxy functions of the alkoxylate to generate one or more species inert relative to the alkoxysilane, such agent (A) being selected from among the electrophile and/or mineral acid groups.
摘要:
The invention relates to a method for preparing a fluorinated and silylated derivative having a bond between the bearing carbon of at least one fluorine and one silicon. This method comprises at least one step during which a derivative of formula (I) Rf-CO—O-D, in which D is selected among silylated radicals, is placed in the presence of a base. The inventive method is used for synthesizing fluorinated derivatives.
摘要:
The present invention concerns a process for preparing esteramide compounds. More particularly, the invention relates to a process for preparing esteramide compounds by reaction between a diester and an amine, in the presence of a basic compound, wherein the basic compound and the amine in gaseous form are co-added to the diester, the reaction being conducted at a temperature of 30° C. or higher.
摘要:
The present invention relates to a method for preparing esteramide compounds. More particularly, the invention relates to a method for preparing esteramide compounds by reaction between a diester and an amine, in the presence of a basic compound, wherein the amine is solubilized in an organic solvent or in the diester, when the amine is solubilized in an organic solvent, the diester is added onto the reaction mixture comprising the amine and the basic compound, when the amine is solubilized in the diester, the basic compound is added onto the reaction mixture comprising the amine and the diester (II), the reaction is conducted at a temperature greater than or equal to 30° C., the amine is present in molar excess ranging from 0.01 to 50% relatively to the diester.
摘要:
The invention relates to a method for preparing a fluorinated and silylated derivative having a bond between the bearing carbon of at least one fluorine and one silicon. This method comprises at least one step during which a derivative of formula (I) Rf—CO—O-D, in which D is selected among silylated radicals, is placed in the presence of a base. The inventive method is used for synthesizing fluorinated derivatives.
摘要:
An esteramide compound of the following formula (I): R1OOC-A-CONR2R3 (I) is described, wherein: A is a covalent bond or a methylene group —CH2—; R1 is an optionally substituted, saturated or unsaturated aliphatic or cycloaliphatic hydrocarbon group including from 5 to 36 carbon atoms, R2 and R3, either identical or different, are groups selected from a hydrogen atom, and optionally substituted hydrocarbon groups, preferably including from 1 to 36 carbon atoms, and R2 and R3 not being simultaneously hydrogen atoms. Also described, are applications for using the esteramide compound, notably as a solvent.
摘要:
The present invention relates to a method for preparing esteramide compounds. More particularly, the invention relates to a method for preparing esteramide compounds by reaction between a diester and an amine, in the presence of a basic compound, wherein the amine is solubilized in an organic solvent or in the diester, when the amine is solubilized in an organic solvent, the diester is added onto the reaction mixture comprising the amine and the basic compound, when the amine is solubilized in the diester, the basic compound is added onto the reaction mixture comprising the amine and the diester (II), the reaction is conducted at a temperature greater than or equal to 30° C., the amine is present in molar excess ranging from 0.01 to 50% relatively to the diester.