- AGENT FOR DYEING HAIR, CONTAINING AT LEAST ONE ORGANIC SILICON COMPOUND, A COLORING COMPOUND AND A FILM-FORMING, HYDROPHILIC POLYMER
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The subject of the present disclosure is a composition for coloring keratinous material, in particular human hair, containing in a cosmetic carrier (a) at least one organic silicon compound selected from silanes having one, two or three silicon atoms, said organic silicon compound further comprising one or more basic chemical functions and one or more hydroxyl groups or hydrolysable groups per molecule,(b) at least one colorant compound from the group of pigments and/or direct dyes, and(c) at least one film-forming hydrophilic polymer.
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- PROCESS FOR DYEING HAIR
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The subject of the present disclosure is a process for dyeing human hair, in which a pretreatment agent (A) which contains at least one organic silicon compound of the formula (I) and/or (II) and contains no direct dyes and no pigments, anda colorant (B) which contains at least one organic silicon compound of the formula (I) and/or (II) and further contains at least one colorant compound from the group of direct dyes and/or pigments, can be applied to the hair, wherein the organic silicon compounds of formulae (I) and (II) are defined as follows [in-line-formulae]R1R2N-L-Si(OR3)a(R4)b??(I),[/in-line-formulae] [in-line-formulae](R5O)c(R6)dSi-(A)e-[NR7-(A′)]f—[O-(A″)]g-[NR8-(A′″)]h—Si(R6′)d′(OR5′)c′??(II).[/in-line-formulae]
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- Tuning cooperativity by controlling the linker length of silica-supported amines in catalysis and CO2 capture
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Cooperative interactions between aminoalkylsilanes and silanols on a silica surface can be controlled by varying the length of the alkyl linker attaching the amine to the silica surface from C1 (methyl) to C5 (pentyl). The linker length strongly affects the catalytic cooperativity of amines and silanols in aldol condensations as well as the adsorptive cooperativity for CO2 capture. The catalytic cooperativity increases with the linker length up to propyl (C3), with longer, more flexible linkers (up to C5) providing no additional benefit or hindrance. Short linkers (C1 and C2) limit the beneficial amine-silanol cooperativity in aldol condensations, resulting in lower catalytic rates than with the C3+ linkers. For the same materials, the adsorptive cooperativity exhibits similar trends for CO2 capture efficiency.
- Brunelli, Nicholas A.,Didas, Stephanie A.,Venkatasubbaiah, Krishnan,Jones, Christopher W.
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supporting information
p. 13950 - 13953
(2012/10/29)
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- Diamino compounds and their production method
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The present invention is to provide diamino compounds useful to polyamide raw materials for production of liquid crystal alignment layers having excellent voltage holding ratios without development of image-sticking phenomena, a method for producing the compounds and liquid crystal display devices equipping the liquid crystal alignment layers. The Diamino compounds are represented by the general formula (1): STR1 wherein R indicates hydrogen or an alkyl group having 1 to 8 carbon atoms, further, X, Y and Z indicate hydrogen, an alkyl group having 1 to 3 carbon atoms or fluorine, respectively, and a part or all of them may be the same or different, and the positions of these substitutive groups may be ortho positions or meta positions.
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- Azido-silane compositions
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Azido-containing silane compositions of matter useful as coupling agents in the production of polymer composite articles.
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- Azido-silane compositions
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Azido-containing silane compositions of matter useful as coupling agents in the production of polymer composite articles.
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