Patent application number | Description | Published |
20080214857 | Method Of Reducing A Functional Group In An Oxidized Form - A novel method of reducing a functional group in an oxidised form. The invention relates more particularly to the reduction of aldehyde, ketone, ester, lactone, nitrile or phosphine oxide groups. The reduction method according to the invention is characterised in that it comprises exposing the substrate including the functional group to be reduced to the presence of a siloxane-type compound of the following formula (I), combined with a Lewis acid-type catalyst. In said formula (I):—R1 and R2, which are the same or different, are an alkyl, cycloalkyle or aryl group, —X is a digit from 0 to 50. | 09-04-2008 |
20080255292 | Process for preparing functionalized polyorganosiloxane resins by redistribution in the presence of triflic acid and/or of at least one derivative thereof and of a nonbasic inert filler - The invention provides a method for preparing functionalized polyorganosiloxane resins (POS) comprising units M: (R | 10-16-2008 |
20080255322 | METHOD FOR PREPARING FUNCTIONALIZED POLYORGANOSILOXANE RESINS BY REDISTRIBUTION IN THE PRESENCE OF AT LEAST ONE TRIFLIC ACID DERIVATIVE - The present invention relates to a process for preparing functionalized polyorganosiloxane (POS) resins comprising units M: (R | 10-16-2008 |
20090177003 | Process for obtaining halogenated monoorganoxysilanes which can be used in particular as sysnthesis intermediates - The invention concerns the preparation of halogenated monoorganoxysilanes, of formula (I), | 07-09-2009 |
20100012623 | DELAMINATING SHAPED ARTICLE SUBSTRATES HAVING SILICONE COVERINGS ADHERED THERETO - Shaped article substrates, e.g., plastics, textiles, extrudates, films, etc., having silicone material coverings adhered thereto, are delaminated by treating same with an aqueous solution containing an alkali metal or alkaline earth metal hydroxide and a phase transfer catalyst; particular such shaped article substrates are airbag type of inflatable protection bags having layers of silicone elastomer adhered thereto and used for the protection of the occupants of a motor vehicle. | 01-21-2010 |
20100022789 | Catalytic compositions for the metathesis of unsaturated fatty bodies with olefins and metathesis methods using catalytic compositions - Catalytic compositions useful for carrying out the metathesis of unsaturated fatty bodies, in particular unsaturated fatty bodies comprising oleic acid or oleic acid esters, contain a ruthenium-based catalyst which can be isolated and which has the formula (I) below: | 01-28-2010 |
20100113791 | PREPARATION OF PRECURSORS OF CARBENES OF CAAC TYPE AND PREPARING SAID CARBENES THEREFROM - Precursors of carbenes of CAAC type (Cyclic)(Alkyl)(Amino)(Carbenes) are prepared and carbenes are produced therefrom; novel synthesis intermediates are provided for preparing the precursors of CAAC-type carbenes. | 05-06-2010 |
20100113800 | Formation of Carbon-nitrogen bond - The present invention relates to a process to create a carbon-nitrogen bond by the reaction of an aromatic compound carrying at least one electro attractive group with one nitrogenous heterocyclic type nucleophile compound. The invention aims, in particular, at a link reaction between an aromatic compound carrying at least one electro attractive group and an imidazole heterocycle type. The invention process, consisting of the reaction of an aromatic compound carrying one leaving group and at least one electro attractive group and a nitrogenous heterocyclic type nucleophile compound comprising a N—H pattern likely to substitute the leaving group, thereby creating a carbon-nitrogen bond in the presence of a copper catalyst, of a base in an organic solvent, is characterized by the fact that the said nitrogenous heterocycle reacts with an aromatic type electrophile compound carrying one leaving group (Y) chosen from bromine, chlorine or sulfonic ester and at least one electro attractive group (Z1), in the presence of a copper catalyst, of a mineral or organic base, of an extracting agent selected from aliphatic diamines, aliphatic amino alcohols and diols in a polar aprotic organic solvent with a dielectric constant less than about 20 and a basicity such that its “donor number” is less than about 25. | 05-06-2010 |
20100140541 | PREPARATION OF FUNCTIONALIZED, IN PARTICULAR ALKENYLATED, ORGANOMONOALKOXY-(OR MONOHYDROXY)-SILANES - Functionalized organomonoalkoxy (or monohydroxy) silanes, in particular alkenyl (allyl) functionalized silanes, are useful as intermediates in organic synthesis, and are prepared by reacting dialkyldialkoxysilanes with an organic halide compound (allyl halide) (III) in an ether solvent (SI), such compound (III) being suited to substitute the alkoxy groups by functionalized groups, for example alkenyl groups. | 06-10-2010 |
20100144959 | PREPARATION OF ALKOXY- AND/OR HALOSILANE (POLY)SULFIDES AND COUPLING AGENTS COMPRISED THEREOF - At least one (poly)thio alkoxy and/or halosilane is/are prepared by reaction of at least one sulfur-containing reagent with at least one alkoxy and/or halosilane, wherein an ionic addition of a sulfur-containing reagent to an alkoxy and/or halosilane is preferably conducted with thermal and/or actinic activation; the novel polythio alkoxy and/or halosilanes of formula (III.2) thus prepared are particularly useful as coupling agents in elastomeric compositions containing a white filler of the silica type and having the formula (III.2) wherein, for example, R | 06-10-2010 |
20100145089 | PREPARATION OF (POLY)SULFIDE ALKOXYSILANES AND NOVEL INTERMEDIATES THEREFOR - At least one polythio alkoxy and/or halosilane is/are prepared by reacting at least one sulfur-containing reagent (Rs) with at least one alkoxy and/or halosilane; intermediates therefor include the thio alkoxy and/or halosilanes of formula | 06-10-2010 |
20110046301 | SYNTHESIS OF URETHANES AND POLYURETHANES CATALYSED BY CARBENES - The present invention relates to a process for preparing a compound comprising at least a urethane group —HN—C(═O)—O, said process comprising a step (E) in which a compound (I) comprising at least an isocyanate functional group —N═C═O is reacted with an organic compound (II) carrying at least a hydroxyl group —OH, said reaction being carried out in a presence of a carbene (III) used as a catalyst. | 02-24-2011 |
20130109886 | PROCESS FOR PREPARING DICARBOXYLIC ACIDS | 05-02-2013 |
20130306917 | QUINONE COMPOUNDS FOR USE IN PHOTOVOLTAIC APPLICATION - The invention relates to a photovoltaic coating containing a mixture of organic N-type (acceptor) and P-type (donor) semiconductor compounds, which makes it possible, when selecting the donor/acceptor pair, to modulate the semiconductor properties of the photovoltaic coating so as to enable the use thereof within a photovoltaic device, wherein one of the organic semiconductors includes a quinone core. | 11-21-2013 |
20130345441 | METHOD FOR PREPARING ALCOHOL CARBONATE USING RARE EARTH OXIDES AS CATALYSTS - Disclosed is a method for preparing, by transcarbonation, a compound of formula (I), including reacting a polyol of formula (II) with an alkyl carbonate or an alkylene carbonate in the presence of a catalytic system consisting of a catalytic entity selected from among the rare earth oxides or the mixtures thereof, and optionally an inert substrate. | 12-26-2013 |
20150080613 | METHOD FOR PREPARING GLYCEROL ETHER AND GLYCOL ETHER - The present invention concerns a method for preparing glycerol ether or glycol ether comprising the reaction of a compound of formula (II) with a compound of formula (III) in the presence of a heterogeneous acid catalyst of formulas (II) and (III). | 03-19-2015 |