摘要:
The present invention relates to mixtures, containing A) reaction products from isocyanates and NCO-reactive silanes and B) carbosilane dendrimers, a process for preparing powder coatings from the mixtures and their use.
摘要:
Dye-donor element for use according to thermal dye sublimation transfer comprising a support having on one side a dye layer and on the other side a heat-resistant layer, characterized in that said heat-resistant layer comprises a polyether containing at least 10 mol % recurring units corresponding to the following formula (I)O--E--O--E'-- (I)wherein--O--E--O-- represents a divalent diphenolate radical corresponding to the following general formula (II) ##STR1## wherein R.sub.1 and R.sub.2 (same or different) represent hydrogen, halogen, a C.sub.1 -C.sub.8 alkyl group, a C.sub.5 -C.sub.6 cycloalkyl group, a C.sub.6 -C.sub.10 aryl group or a C.sub.7 -C.sub.12 aralkyl group; andX represents the necessary atoms to close a 5- to 8-membered cycloaliphatic ring which may be substituted with one or more C.sub.1 -C.sub.6 alkyl groups or 5- to 6-membered cycloalkyl groups or carry fused-on 5- or 6-membered cycloalkyl groups;--E'-- represents a divalent radical of an aromatic sulfone corresponding to the following general formula (III) ##STR2## or a divalent radical of a diarylketone corresponding to the following general formula (IV) ##STR3## or a divalent radical of benzonitrile corresponding to the following general formula (V) ##STR4## wherein Ar and Ar' in formula III and IV (same or different) represent difunctional aromatic radicals having 6 to 50 carbon atoms.
摘要:
Process for producing a capacitor anode based on at least one of a valve metal and a compound having properties comparable to a valve metal includes providing a pressing or cutting tool which is at least one of made of and coated with a pressing or cutting tool material comprising at least one of a metal carbide, an oxide, a boride, a nitride, a silicide, a carbonitride or alloys thereof, a ceramic material, a hardened steel, an alloy steel, and a capacitor anode material. Particles of the at least one of a valve metal and a compound having properties comparable to a valve metal are pressed or cut with the pressing or cutting tool so as to produce a porous electrode body and form the capacitor anode.
摘要:
The production of electrically conductive polythiophenes by reaction of 2,5-dihalogen-3,4-ethylene dioxythiophenes with 3,4-ethylene dioxythiophenes in a solvent or liquid phase is provided. These polythiophenes can be used as a plastic or lacquer additive to provide antistatic properties.
摘要:
The present invention relates to a stabilised monomer composition comprising at least 50 wt.-%, based on the total weight of the stabilised monomer composition, of a thiophene derivative monomer having the general formula (I) in which R1 and R2 stand, independently of one another, for hydrogen, for an optionally substituted C1-C20-alkyl group or C1-C20-oxyalkyl group, optionally interrupted by 1 to 5 oxygen atoms and/or sulfur atoms, or jointly for an optionally substituted C1-C20-dioxyalkylene group or C6-C20-dioxyarylene group, and 0.001 to 10 wt.-%, based on the total weight of the stabilised monomer composition, of a stabiliser. The present invention also relates to a method for the manufacture of a capacitor, a capacitor obtained by this method, the use of a stabilised monomer composition and to the use of a stabiliser.
摘要:
The invention relates to a process for preparing polythiophene dispersions or for in situ deposition of polythiophenes. The dispersion is prepared by oxidative polymerizing of a thiophene or thiophene derivative, wherein an oxidizing agent is used and is at least one organic peroxidic compound excluding diacyl peroxide. The invention also relates to the use of specific organic peroxides as oxidizing agents in the oxidative polymerization of thiophenes. The invention further relates to a process to process a conductive layer and the use of the conductive layer.
摘要:
The present invention relates to polyisocyanate-modified dicarboxylic acid derivatives obtainable by reacting organic polyisocyanates with excess quantities, based on the equivalent ratio of NCO/COOH groups, of dicarboxylic acid (poly)anhydrides containing free carboxyl groups and water. The present invention also relates to coating compositions, in particular powder coating compositions, containing these polyisocyanate-modified dicarboxylic acids as curing agents for resins containing epoxy groups.
摘要:
An aqueous two-component coating agent whose binder consists essentially of a combination of a) a polyol component present dissolved and/or dispersed in water comprising a1) at least one water-dilutable polymerisation resin or polycondensation resin with a molecular weight Mn of over 500 possessing hydroxyl groups and a2) a reactive diluent consisting of at least one water-soluble compound with a molecular weight Mn of under 500 capable of reacting with isocyanate groups and b) a polyisocyanate component with a viscosity at 23.degree. C. of from 50 to 10 000 mPa present emulsified in the aqueous solution or dispersion, a method for producing such coating agents wherein the said polyisocyanate component is emulsified in the said aqueous solution or dispersion with the optional incorporation of auxiliary substances and additives in the system prior to adding the polyisocyanate, and the use of the coating agents for the production of air-drying and/or heat-drying coatings.
摘要:
Polyisocyanate-modified dicarboxylic (poly)anhydrides which are solid below 40.degree. C., liquid above 120.degree. C. and based on the reaction product of organic polyisocyanates with more than equivalent quantities, based on the NCO/COOH reaction, of dicarboxylic (poly)anhydrides containing free carboxyl groups and optional subsequent modification of the reaction product with less than equivalent quantities, based on the anhydride groups, of anhydride-reactive amino and/or hydroxyl groups; and powder coating compositions containing as binder these polyisocyanate-modified dicarboxylic (poly)anhydrides as curing agents for polyepoxides.
摘要:
Aromatic polyether sulfones based on 5 to 90 mol-%, based on total bisphenols, of special dihydroxydiphenyl cycloalkanes and 10 to 95 mol-% based on the bisphenols of specific phthaleins, a process for their production and their use as molding compounds.