摘要:
An oligomerized polyorganosiloxane cocondensate which may be obtained, in part, by mixing an water-soluble amino-functional organosilane represented with at least one of the followoing: a fluoro-functional organosilane, an organosilane, and an organosilane. The cocondensate may be used, for example, in a method of treating surfaces.
摘要:
An alcoholic fluoroalkyl-functional group containing organosiloxane based composition is prepared by the controlled hydrolysis of at least one fluoroalkyl-functional group containing organosilane of formula I: R1—Y—(CH2)2SiHx(R2)y(OR)3−x−y (I), in which R1 is a mono, oligo- or perfluorinated alkyl group having 1-9 C atoms or a mono-, oligo- or perfluorinated aryl group, Y is a CH2, O or S group, R2 and R are each independently a linear, branched or cyclic alkyl group having 1-8 C atoms or an aryl group and x=0, 1 or 2 and y=0, 1 or 2, where (x+y)≦2, at a temperature in the range of 0-120° C. over a period of 0.5-24 hours and with thorough mixing in an alcoholic medium which contains water and a weak mono- or polybasic acid or a weak base or a weak mono- or polybasic acid and a weak base or an acid or basic salt, the water employed and the alkoxysilane employed being in a molar ratio of 2-500:1.
摘要:
An alcoholic fluoroalkyl-functional group containing organosiloxane based composition prepared is prepared by the controlled hydrolysis of at least one fluoroalkyl-functional group containing organosilane of formula I: R1—Y—(CH2)2SiHx(R2)y(OR)3−x−y (I), in which R1 is a mono, oligo- or perfluorinated alkyl group having 1-9 C atoms or a mono-, oligo- or perfluorinated aryl group, Y is a CH2, O or S group, R2 and R are each independently a linear, branched or cyclic alkyl group having 1-8 C atoms or an aryl group and x=0, 1 or 2 and y=0, 1 or 2, where (x+y)≦2, at a temperature in the range of 0-120° C. over a period of 0.5-24 hours and with thorough mixing in an w alcoholic medium which contains water and a weak mono- or polybasic acid or a weak base or a weak mono- or polybasic acid and a weak base or an acid or basic salt, the water employed and the alkoxysilane employed being in a molar ratio of 2-500:1.
摘要:
The present invention relates to a composition which comprises (i) at least one block condensate of organofunctional siloxanes of the general formula (I) [F]e[QcPb]d (I) and/or (ii) at least one mixture composed of e[F] and d(c[Q]+b[P]) and, where appropriate d[QcPb]. These compositions or block condensates are obtainable via reaction of block units F with block units Q, P, and/or QP, by one of the following methods:—c1) diluting block unit F optionally with an alcohol, adding an organic or inorganic acid and from 0.5 to 150 mol of water per mole of Si of the siloxane used, whereupon at least partial hydrolysis of the block units used takes place, then adding block unit Q and block unit P, and allowing the mixture to react, or—c2) diluting block unit F optionally with an alcohol, mixing with Q, P, and/or block unit QP, then adding an organic or inorganic acid and, using from 0.5 to 150 mol of water per mole of Si of the siloxanes used, carrying out partial hydrolysis and block-condensation, or—c3) diluting block unit F optionally with an alcohol, adding an organic or inorganic acid and from 0.5 to 150 mol of water per mole of Si of the siloxane used, with at least partial hydrolysis, adding block unit QP, and allowing the mixture to react, or—c4) diluting block units Q, P, and/or QP, optionally with an alcohol, adding an organic or inorganic acid and from 0.5 to 1.5 mol of water per mole of Si of the siloxanes used, and at least partially hydrolyzing, then adding block unit F and also from 0 to 148.5 mol of water per mole of Si of the siloxanes used, and allowing the mixture to react, or—c5) diluting block unit F optionally with an alcohol, mixing with from 0.5 to 150 mol of water per mole of Si of the siloxanes used, and with an organic or inorganic acid, and then adding a tetraalkoxysiloxane, and allowing the mixture to react. The present invention further relates to a process for the preparation of these compositions or block condensates, and to their use and to items thus obtainable: abrasion-resistant easy-clean coatings and items equipped with this type of coating.
摘要:
The invention relates to an aqueous composition of bis-amino-functional silicon compounds which is essentially free of organic solvents and releases essentially no further alcohol in the course of crosslinking, and to processes for preparing it and to the use thereof, for example for hydrophobization of metal or glass surfaces.
摘要:
The invention relates to an aqueous composition of bis-amino-functional silicon compounds which is essentially free of organic solvents and releases essentially no further alcohol in the course of crosslinking, and to processes for preparing it and to the use thereof, for example for hydrophobization of metal or glass surfaces.
摘要:
A process for preparing an alkylaminoalkylalkoxysilane of formula (I) R—(NR′)—Y—Si(R1)n(OR2)3-n (I) in which R is a linear, branched or cyclic alkyl group having 1 to 12 carbon atoms, R′ is a hydrogen (H) or is a linear, branched or cyclic alkyl group having 1 to 12 carbon atoms, Y is a bivalent alkyl group from the group of —CH2—, —(CH2)2—, —(CH2)3—, —(CH2)(CH(CH3))(CH2)— and —(CH2)4—, R1 and R2 groups are the same or different and are each a linear or branched alkyl group having 1 to 4 carbon atoms, and n is 0 or 1 or 2, by reacting an alkylamine, used in excess, with a haloalkylalkoxysilane, distilling off excess free alkylamine, treating the remaining product mixture with the alkylaminoalkylalkoxysilane and working up.
摘要:
The present invention relates to the use of a composition in coating agents, which is poor in volatile organic compounds (VOC) or essentially free of VOC, wherein the composition is at least partially based on one or more partially or fully hydrolyzed and optionally condensed or co-condensed aminoalkyl- and oligosilylated-aminoalkyl-, alkoxy- or hydroxy-functional silicon compounds and the alcohol is at least partially removed from the composition. The invention also relates to a composition containing aminoalkyl- or oligosilylated-aminoalkyl-, hydroxy- and optionally alkoxy-functional silicon compounds and to a method for producing such a composition.
摘要:
The present invention relates to a process for preparing silicon compounds bearing fluoroalkyl groups by hydrosilylation of a fluoroolefin in the presence of a hydrosilylation catalyst, which comprises initially charging and heating a hydrogenchlorosilane, then metering in the fluoroolefin and reacting the reaction mixture and subsequently isolating the hydrosilylation product.
摘要:
The present invention relates to a process for preparing silicon compounds bearing fluoroalkyl groups by hydrosilylation of a fluoroolefin in the presence of a hydrosilylation catalyst, which comprises initially charging and heating a hydrogenchlorosilane, then metering in the fluoroolefin and reacting the reaction mixture and subsequently isolating the hydrosilylation product.