55 results about "Alkoxy radical" patented technology

The present invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1 and R1* each, independently of one another, denote an alkyl or alkoxy radical having 1 to 15 C atoms, where, in addition, one or more CH2 groups in these radicals may each be replaced, independently of one another, by —C≡C—, —CF2O—, —OCF2—, —CH═CH—, —O—, —CO—O—, —O—CO— in such a way that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by halogen, L1 and L2 each, independently of one another, denote F, Cl, CF3 or CHF2, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PA-VA, SS-VA, SA-VA, PS-VA, PALC, IPS, PS-IPS, FFS or PS-FFS effect.

The invention relates to organosilicon compounds modified with mono- or polyhydroxylated hydrocarbon radicals or carbohydrate derivatives and containing units of the general formula (I)in whichR is a substituted or unsubstituted hydrocarbon radical,X is chlorine, or an alkoxy radical,A is a hydroxylated hydrocarbon, preferably a mono-, oligo-, or polysaccharide, and the sum of a, b, and c<=4. The organosilicon compounds are interface-active.

A process for producing amino-functional polysiloxanes by reacting the components A) identical or different terminally hydroxy-functional, linear or branched polysiloxanes, B) identical or different alkoxysilanes of the formulaR1xR23-xSiR3  (I)where R1 is identical or different alkyl radicals having 1 to 4 carbon atoms, R2 is identical or different alkoxy radicals having 1 to 4 carbon atoms, R3 is an organic radical having at least one nitrogen atom, x=0 to 2, and C) water, in the presence of D) one or more phosphorus-containing, Brønsted-acidic compounds, to the correspondingly obtainable polysiloxanes containing nitrogen-containing groups, and to the use thereof are provided.

A process for preparing optically active alkanols of the formula Iin whichn is an integer from 0 to 5;Cyc is an optionally substituted, mono- or polynuclear, saturated or unsaturated, carbocyclic or heterocyclic ring, andR1 is halogen, SH, OH, NO2, NR2R3 or NR2R3R4+X−, with R2, R3 and R4 independently of one another being hydrogen or a lower alkyl or lower alkoxy radical and X− being a counterion,which process comprises incubating in a medium comprising alkanone of the formula IIin which n, Cyc and R1 are as defined above,an enzyme having a polypeptide sequence(i) SEQ ID NO: 1 or(ii) in which, compared to SEQ ID NO:1, up to 25% of the amino acid radicals have been altered by deletion, insertion, substitution or a combination thereof and which retains at least 50% of the enzymic activity of SEQ ID NO:1,with the compound of the formula II being enzymically reduced to give the compound of the formula I, and isolating the product formed.

Dermatological compositions contain, formulated into a physiologically acceptable medium, at least one retinoid compound selected from among all-trans retinoic acid, isotretinoin, motretinide, and naphthoic acid compounds of formula (I), and salts and esters thereof:wherein R is a hydrogen atom, a hydroxyl radical, a branched or unbranched alkyl radical having from 1 to 4 carbon atoms, an alkoxy radical having from 1 to 10 carbon atoms, or a cycloaliphatic radical which is substituted or unsubstituted, and benzoyl peroxide, and also at least one anti-irritant compound selected from among 18β-glycyrrhetinic acid, and its salts and derivatives thereof.

The present invention provides a polymerizable organosilicon nanocapsule, which includes:a nanoscale core A, which includes:at least one particle comprising at least one oxide or mixed oxide, KA-O, of at least one metal or semimetal selected from the group including main groups 2 to 6 of the Periodic Table, transition groups 1 to 8 of the Periodic Table, lanthanides, and mixtures thereof;andan organosilicon shell B, which includes:at least one organosilicon compound having the formula (Ia):(Si′O—)xSi—R  (Ia)wherein R is a vinyl or allyl group;wherein x is a number from 0 to 20;wherein remaining free valences of Si are each independently (KA-O)—, SiO— or —Z;wherein remaining free valences of Si′ are each independently (KA-O)—, SiO—, —R, or —Z;wherein the Z's are each independently hydroxyl or alkoxy radicals; andwherein each Si and Si′ in the shell B have not more than one R group attached thereto.

Silicone compositions that are cationically crosslinkable into hard, anti-mist / anti-fouling coatings, e.g., onto thermoplastic substrates, contain colloidal particles of non-functionalized silica and also: at least one crosslinkable and / or polymerizable silicone monomer, oligomer and / or polymer comprising: at least one structural unit of formula (I): Z1(R0)aSiO(3−a) / 2  (I) in which: a=0, 1 or 2; the radicals R0, which may be identical or different when a >1, are each an alkyl, cycloalkyl, aryl, vinyl, or alkoxy radical, or a hydrogen atom; the radicals Z1, which may be identical or different when the number of units of formula (I) is greater than 1, are each an organic substituent comprising at least one epoxy and / or alkenyl ether and / or oxetane and / or dioxolane and / or carbonate reactive functional group; and a total number of silicon atoms per molecule at least equal to 2; and an effective amount of at least one cationic initiator; and optionally, at least one organic solvent.

A terpolymer having units of Formula IwhereinX is a C2-10 alkyl, C6-12 aryl, or C4-12 alkoxy radical,d is from about 3 to about 50,R is a fluoroalkyl radical Rf-(A)v-(B)w-,Rf is a fully fluorinated straight or branched aliphatic radical optionally interrupted by at least one oxygen atom,A is a divalent radical selected from -SO2N(R'')-, -CON(R'')-, -S-, or -SO2-, where R'' is H, or a C1-6 alkyl radical,B is a divalent linear hydrocarbon radical -CtH2t-, where t is 1 to 12,Y is a divalent radical -CH2-O-,u, v, and w are each independently zero or 1,R' is hydrogen or methyl,e is from about 0.05 to about 10,M is hydrogen, alkali metal, or ammonium, andf is from about 5 to about 40,and its use to provide soil resistance and resistance to staining by acid dyes for fiber substrates is disclosed.

To an aromatic ring-bearing synthetic resin such as an aromatic polycarbonate resin or aromatic epoxy resin is added a minor amount of an organopolysiloxane which contains phenyl radicals and monofunctional siloxane units in a molecule wherein the contents of alkoxy radicals and hydroxyl radicals are each set at less than 2% by weight. Molded parts of the resin composition are flame retardant, optically transparent, and recyclable for reuse.

A one-component moisture-curable room temperature vulcanizable silicone composition comprising an alkylalkoxyacyloxy group selected from the group consisting of R1SiR2aR33-a and R4R5bR63-bSi-O-SiR7R8cR93-c and mixtures thereof silane, wherein R1, R4 and R7 are independently selected from the alkyl group of formula (CH2) nX, wherein n is an integer from 1 to 10, and X is selected from hydrogen, amino, epoxy, cyano, thiocyanate Acid group, allyl group, and vinyl group; R2, R5 and R8 are independently selected from the acyloxy group of formula OC (O) (CH2) mH, wherein m is the integer of 1 to 8; R3, R6 and R9 Independently selected from alkoxy groups or mixtures of alkoxy groups of 1 to 10 carbon atoms, wherein the subscripts a, b and c are subject to the following conditions: 0<a<3; 0<b<3; and 0< c<3, wherein said alkylalkoxyacyloxysilane is liquid at a temperature higher than 0°C.

The present invention relates to an epoxy modified polysiloxane composition obtainable by combining the following ingredients:—a polysiloxane of formula (1), wherein each R1 is independently selected from hydroxy, alkyl, aryl or alkoxy radicals having up to six carbon atoms, each R2 is independently selected from hydrogen, alkyl or aryl radicals having up to six carbon atoms and, wherein n is selected so that the molecular weight for the polysiloxane is in the range of from about 400 to 10,000; with formula (1)—an epoxy resin having more than one 1,2-epoxy groups per molecule with an epoxy equivalent weight in the range of from 100 to about 5,000; and—an amino hardener component having active hydrogens able to react with epoxy groups in the epoxy resin to form polymers containing hydroxyl groups, which are able to react with the silanol groups of hydrolyzed polysiloxane to form a polymer network, wherein the epoxy chain polymers and polysiloxane polymers polymerize to form a cured epoxy modified polysiloxane polymer composition.

The present invention relates to a liquid-crystalline medium which comprises at least one compound of the formula I, in which R1 and R1* each, independently of one another, demote an alkyl or alkoxy radical having 1 to 15C atoms, where, in addition, one or more CH2 groups in these radicals may each be replaced, independently of one another, by -C=C- -CF2O -OCF2- -CH=CH- -O- -CO-O- -O-CO- in such away that O atoms are not linked directly to one another, and in which, in addition, one or more H atoms may be replaced by halogen, L1 and L2 each, independently of one another, denote F, C1, CF3 orCHF2, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PA-VA, SS-VA,PS-VA,PALC,IPS,PS-IPS,PPS or PS-FFS effect.

The present invention relates to a process for preparing alkoxysilane-functional prepolymers by reactingA) 1.0 equivalent of a polyol component have a number average molecular weight of 3000 g / mol to 20,000 g / mol and containing one or more polyoxyalkylene polyols or polyoxyalkylene polyol prepolymers withB) 1.05 to 1.50 equivalent of an isocyanate- and alkoxysilane-functional compound of formula I)whereinX, Y, and Z independently of one another are linear or branched C1-C8 alkyl or C1-C8 alkoxy radicals, wherein at least one of the radicals is a C1-C8 alkoxy group andR is an organic radical having a functionality of at least two,and subsequently further reacting the remaining free NCO groups by allophanatization or by reaction withC) an isocyanate-reactive component.The present invention also relates to the alkoxysilane-functional prepolymers obtained by the process of the invention.

A liquid silicone rubber coating composition comprising (A) an organopolysiloxane containing silicon-bonded alkenyl radicals, (B) an organohydrogenpolysiloxane containing SiH radicals, (C) an addition reaction catalyst, (D) finely divided silica, (E) an organosilicon compound containing epoxy and alkoxy radicals, (F) an organic titanium, zirconium or aluminum compound, and (G) a silanol-containing silane or siloxane compound is coated on a surface of an airbag base fabric and cured to form a rubber coating layer thereon. The composition is suited for curtain airbags.

This invention relates to the oligomerisation of olefinic compounds in the presence of an activated oligomerisation catalyst. The invention also extends to a particular manner for providing an activated oligomerisation catalyst. According to the the present invention, there is provided a process for producing an oligomeric product by the oligomerisation of at least one olefinic compound, the process including (a) providing an activated oligomerisation catalyst by combining, in any order, and (b) contacting the at least one olefinic compound with the activated oligomerisation catalyst to produce an oligomeric product.

A process for the preparation of di- and trialkylsilanes of the general formula (I)in whichmono- or dialkylsilanes of the general formula (II)are reacted with alkenes A which have at least 3 carbon atoms and are optionally substituted by fluorine, chlorine or bromine atoms or cyano groups, in the presence of a transition metal catalyst and a trihalogenosilane of the general formula (III)as an activator,wherein, in the above general formulae (I) to (III),R is a branched or cyclic hydrocarbon radical having at least 3 carbon atoms, optionally substituted by fluorine, chlorine, or bromine, or cyano groups,R1 is an alkyl radical optionally substituted by fluorine, chlorine, or bromine, or cyano groups,R2 is a hydrogen atom, or an alkyl radical optionally substituted by fluorine, chlorine, or bromine, or cyano groups,X is fluorine, chlorine, or bromine, or an alkoxy radical having 1 to 18 carbon atoms optionally substituted by fluorine, chlorine, or bromine, or cyano groups,Y is fluorine, chlorine or bromine,a is 1 or 2,b is 1 or 2, andc is 1 or 2.