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 a system, to a reactor and to a process for continuous industrial performance of a reaction wherein allyl glycidyl ether A is reacted with an HSi compound B in the presence of a catalyst C and optionally of further assistants, and the system is based at least on the combination of reactants (3) for components A (1) and B (2), at least one multielement reactor (5) which in turn comprises at least two reactor units in the form of exchangeable pre-reactors (5.1) and at least one further reactor unit (5.3) connected downstream of the prereactors, and on a product workup (8).
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.
摘要:
A process for producing surface-sealed hollow glass containers, wherein as part of the production process the hollow glass containers are coated with a water-based cold end coating composition in the region of the exit from the annealing lehr, which is arranged following a machine for producing hollow glass containers, where the cold end coating composition comprises the following components: I. a water-based organopolysiloxane-containing composition prepared from alkoxysilanes which carry a functional group and alkoxysilanes which are selected from trialkoxysilanes, dialkoxysilanes and tetraalkoxysilanes, and II. a silicon-free component selected from a wax, a partial fatty acid ester, a fatty acid and/or a surfactant. The hollow glass containers produced in this way feature an enhanced long-term service strength.
摘要:
A discoloration of an aminosilane having a content of a free base is treated by adding an acid chloride to the aminosilane to obtain a mixture having a molar excess of acid chloride; neutralizing the molar excess of the acid chloride in one or more steps with a molar deficit of a base to obtain a mixture containing a salt; separating off the salt from; and irradiating the remaining aminosilane with UV-containing light.
摘要:
A process for producing surface-sealed hollow glass containers, the hollow glass containers are, in the production process in the region of the exit from the annealing lehr which is located downstream of a machine for producing hollow glass containers, coated by means of a water-based cold end coating composition comprising at least the following components: I. a trialkoxysilane, a dialkoxysilane and/or a tetralkoxysilane or their hydrolysis and/or condensation products and also II. a water-soluble or water-dispersible mixture of a polyol and a crosslinker, wherein the applied layer of the cold end coating composition is subsequently subjected to a crosslinking step. The hollow glass containers produced in this way have an improved strength.
摘要:
A process for preparing an alkylamino-alkylalkoxysilane 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, distilling off excess free alkylamine, treating the remaining product mixture with the alkylaminoalkylalkoxysilane and working up.
摘要:
The present invention relates to surface-modified insulators obtained by coating an insulator body with a preparation containing at least one organofluorine-functional silane and/or siloxane, at least one mineral acid and at least one metal salt of aluminum(III), tin(II), tin(IV), iron(III) or titanium(III) as catalyst, to a process for their preparation and to the use of the preparation for coating insulators.