Abstract:
The invention relates to a method for carrying out a chemical reaction for producing a target compound by heating in a reactor a reaction medium containing at least one first reactant, such that a chemical bond inside the first reactant or between the first and a second reactant is formed or modified. The reaction medium is brought into contact with a solid heating medium that can be warmed by electromagnetic induction and that is inside the reactor and is surrounded by the reaction medium. Said heating medium is heated by electromagnetic induction with the aid of an inductor and the target bond is formed from the first reactant or from the first and a second reactant and said target bond is separated from the heating medium.
Abstract:
The invention relates to a method for carrying out an oxidation reaction for producing a product by heating a reaction medium containing a reactant and oxygen or an oxygen carrier in a reactor, wherein the reaction medium is brought into contact with a solid heating medium which may be heated by electromagnetic induction, which is surrounded by the reaction medium. The heating medium is heated by electromagnetic induction using an inductor, wherein an oxidation reaction is carried out on the first reactant to give a product and the product is separated from the heating medium. The inductor preferably generates an alternating field with a frequency in the range 1 to 100 kHz, preferably in the range 10 to 80 kHz and in particular up to 50 kHz.
Abstract:
A method for performing a phase transition, in particular a melting process, by heating a carrier medium containing or constituting a phase change material in a reactor, the carrier medium being brought into contact with a solid heating medium that can be heated by electromagnetic induction and that is contained in the reactor and is surrounded by the carrier medium, and heating the heating medium by electromagnetic induction by means of an inductor, the phase change material undergoing a phase transition and the carrier medium being separated from the heating medium after the phase transition. This preferably takes place in a continuous-flow reactor. The inductor preferably generates an alternating field having a frequency in the range from 1 to 100 kHz.
Abstract:
Aerobically hardening adhesives based on polymers of acrylates or methacrylates having a relatively high boiling point such as polyurethane (meth)acrylates are described, wherein the adhesives contain at least one initiator capable of forming free radicals, at least one accelerator, and at least one siccative. Such adhesives are largely odorless and harden completely such that the adhesive surface at the boundary with air is not tacky.
Abstract:
The invention pertains to a composition containing an activator system for free-radical polymerizations and a free-radical polymerizable compound of the general formula II: �H.sub.2 C.dbd.CR.sup.1 --C(.dbd.O)--O--R.sup.2 --O--C(.dbd.O)--NH--Q--NH--C(.dbd.O)!.sub.2 �{--O--R.sup.4a --O--C(.dbd.O)--NH--Q'--NH--C(.dbd.O)}.sub.m --O--R.sup.4a --O--!(II) wherein m is from 0 to 10; R.sup.1 is hydrogen or a methyl group; R.sup.2 is a linear or branched chain alkyl group containing from 2 to 6 carbon atoms or an alkylene oxide containing from 4 to 21 carbon atoms; Q and Q' independently are aromatic, aliphatic or cycloaliphatic groups containing from 6 to 18 carbon atoms which are derived from the basic diisocyanate or diisocyanate mixtures; and R.sup.4a is derived from a polyesterdiol having a C:O ratio of >2.6, a C:H ratio of
Abstract:
A disinfectant-containing hard surface cleaner composition having increased bacteria count-reducing efficacy is provided by adding thereto a mixture of an alkyl or alkenyl oligoglycoside and certain C.sub.8 -C.sub.18 alkyl ethers.
Abstract:
A method for performing a chemical reaction to produce a target compound by heating a reaction medium containing a reactant in a reactor, the reaction medium being brought into contact with a solid heating medium that can be heated by electromagnetic induction and that is located inside the reactor and surrounded by the reaction medium and the heating medium being heated by electromagnetic induction with the aid of an inductor, causing the target compound to form, and the target compound being separated from the heating medium, wherein the target compound has a lower molar mass than the reactant and at least one covalent bond of the reactant is cleaved in order to produce said target compound from the reactant.
Abstract:
The invention relates to a molded part for bonding to metal or plastic substrates for use as a fastening element. Said molded part comprises a hot melt adhesive, said hot melt adhesive being based on polyamide, polyolefins, polyesters, polyacrylates or polystyrene. The molded part according to the invention is characterized in that the hot melt adhesive has a softening point between 100° and 250° C., a tensile stress at yield of between 1 and 35 MPa and the molded part consists entirely of the hot melt adhesive. The invention also relates to a method for bonding molded parts from hot melt adhesives to substrates by way of inductive heating.
Abstract:
A method of adhesively bonding a first component to a second component, which comprises a peripheral zone with which the first component is adhesively bonded in overlapping manner is provided. In such method, a) at least one body of hot-melt adhesive is adhesively bonded to the first component in such a way that it comes into contact with the peripheral zone upon adhesive bonding of the first component to the second component, b) the peripheral zone is heated locally at at least one point, at which the applied body of hot-melt adhesive comes into contact with the peripheral zone upon adhesive bonding of the first component, indirectly or directly by electromagnetic induction to a temperature above the melting temperature of the hot-melt adhesive, c) the first component is brought into contact with the peripheral zone of the second component in such a way that the body of the hot-melt adhesive comes into contact with the point of the peripheral zone heated in step b), such that the hot-melt adhesive melts at the point of contact with the peripheral zone and bonds the first component to the peripheral zone of the second component after cooling. In addition, prior to step b) or after step c) a reactive adhesive is introduced in such a way between the first and the second component that it bonds the first component to the peripheral zone of the second component, the reactive adhesive being cured or allowed to cure.