摘要:
The invention relates to a method for producing an adsorption heat exchanger, which is characterized by the following Steps: producing a heat exchanger structure; forming an adhesive layer (5) on the heat exchanger structure; filling the heat exchanger structure with a sorbent material (6.1); removing from the heat exchanger structure portions of the sorbent material that have bonded only weakly or not at all to the adhesive structure.
摘要:
The present invention relates to a method for producing triazine carbamates by conversion of at least one triazine with at least one chloroformate in the presence of at least one alkaline or alkaline earth metal compound, wherein the alkaline or alkaline earth metal compound is not present in form of an alcoholate.
摘要:
Polymers are prepared from A) 60 to 95 percent by weight of a mixture including A1) 20 to 70 percent by weight of hydroxyalkyl amino triazines and A2) 30 to 80 percent by weight of bis(hydroxyalkyl) amino triazines B) 5 to 40 percent by weight of polyfunctional compounds selected from one or more of B1) polyisocyanates and/or oligomeric polyesters or polyethers with isocyanate end groups, B2) aliphatic dicarboxylic acids, esters, chlorides or anhydrides, or aromatic polybasic acids, esters, chlorides or anhydrides, B3) aliphatic or aromatic diglycidal compounds or triglycidyl compounds, and, optionally, C) 1 to 20 percent by weight of aliphatic, cycloaliphatic or aromatic dihydroxy compounds, polyalkylene glycols and aliphatic aldehydes.
摘要:
Mixtures of triazine derivatives free from polyalkylene oxide Mixtures of triazine derivatives free from polyalkylene oxide are produced from 20 to 70 percent by weight of triazine derivatives with hydroxyalkyl amino groups and 80 to 30 percent by weight of triazine derivatives with bis(hydroxyalkyl) imino groups by catalytic reaction of alkylpropylene oxides with triazine derivatives at a melamine derivative/alkylpropylene oxide molar ratio of 1:1.5 to 1:10 in the presence of metal alkyls, metal hydrides, metal alcoholates and/or metal alkylamides as catalysts. The triazine derivative/hydroxy group mixtures free from polyalkylene oxide are particularly suited for producing plastic materials, flame retardants, additives, pharmaceuticals, textile auxiliaries, and paints or finishes.
摘要:
The invention relates to a method for producing an adsorption heat exchanger, which is characterized by the following Steps: producing a heat exchanger structure; forming an adhesive layer (5) on the heat exchanger structure; filling the heat exchanger structure with a sorbent material (6.1); removing from the heat exchanger structure portions of the sorbent material that have bonded only weakly or not at all to the adhesive structure.
摘要:
A circuit for detecting current flow in a triac, wherein the circuit operates with only one operating voltage with one pole of this operating voltage being connected to a current terminal of the triac and simultaneously being the voltage reference point for the triac. The triac gate voltage fluctuating around the voltage reference point is used to detect the triac current flow, the gate voltage of the triac is transformed, if necessary, into the voltage range of the operating voltage of the detector circuit, and digital information is generated as a function of the gate voltage to indicate whether a load current is flowing in the triac or not.