摘要:
Novel impact strength modifiers which are obtained by reaction of amphiphilic block copolymers. These impact strength modifiers are suitable in particular for use in heat-curing epoxy resin adhesives. In particular, combinations of different impact strength modifiers are also suitable for use in heat-curing epoxy resin adhesives. Also disclosed are methods of bonding heat-stable substrates.
摘要:
The present invention relates to epoxy group-terminated polymers of the formula (I). Said epoxy group-terminated polymers are suited extremely well as impact resistance modifiers, particularly in epoxy resin compostions. They are particularly suited for use in heat-curing epoxy resin adhesives. It has been found that such epoxy resin compostions not only have excellent mechanical properties and high glass transition temperatures, but also above all improved impact resistance properties, both at room temperature and at low temperatures.
摘要:
The invention relates to differently blocked polyurethane polymers of formula, to their use as impact resistance modifiers, to heat-curable epoxy resin compositions containing said impact resistance modifiers and to methods for the production of said compositions. The invention also relates to bonding methods using said compositions and to articles produced by said methods.
摘要:
A formulation comprisinga) at least one polythiophene in oxidised polycationic form and containing structural repeating units of formula I ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other linear or branched C.sub.1 -C.sub.18 alkyl or C.sub.2 -C.sub.18 alkoxyalkyl; or are C.sub.3 -C.sub.8 cycloalkyl, phenyl or benzyl which are unsubstituted or substituted by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy or halogen; or R.sub.1 and R.sub.2, taken together, are linear C.sub.1 -C.sub.8 alkylene which is unsubstituted or substituted by C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, halogen, C.sub.3 -C.sub.8 cycloalkyl, phenyl, benzyl, C.sub.1 -C.sub.4 alkylphenyl, C.sub.1 -C.sub.4 alkoxyphenyl, halophenyl, C.sub.1 -C.sub.4 alkylbenzyl, C.sub.1 -C.sub.4 alkoxybenzyl or halobenzyl; andb) at least one polyanion of a film-forming thermoplastic polymer containing sulfated alcohol groups ##STR2## and/or sulfonatoalkylated alcohol groups ##STR3## in structural repeating units, wherein the group --(C.sub.n H.sub.2n)-- is linear or branched C.sub.2 -C.sub.12 alkylene which contains 2 to 5 carbon atoms in the carbon chain and is unsubstituted or substituted by C.sub.1 -C.sub.4 alkoxy. The formulation is an intrinsically electrically conductive themoformable material.
摘要:
Compounds of the formula I ##STR1## in which X is O, S, SO, SO.sub.2 or NR.sub.13, R.sub.13 is, for example, methyl, and R.sub.1 to R.sub.12, independently of one another, are, for example, H, C.sub.1 -C.sub.12 alkyl, C.sub.1 14 C.sub.12 alkoxy, halogen or --CN. The compounds are photosensitive and photochromic and as suitable are photosensitizers and simultaneously as colour indicators, and as photoswitchable colour filters.
摘要:
Compounds of formula I or III or mixtures thereof ##STR1## wherein R is unsubstituted C.sub.6 -C.sub.14 aryl or C.sub.6 -C.sub.14 aryl which is substituted by C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy, C.sub.1 -C.sub.12 alkylthio, phenyl, benzyl, --CN, --CF.sub.3, halogen or --COOR.sub.3, x is 1 or 2, and R.sub.1 is H, linear or branched C.sub.1 -C.sub.12 alkyl, C.sub.2 -C.sub.12 alkenyl or C.sub.2 -C.sub.12 alkynyl, C.sub.7 -C.sub.16 aralkyl, C.sub.8 -C.sub.16 alkaralkyl, --CH.sub.2 COOR.sub.3 or C.sub.1 -C.sub.12 acyl, wherein R.sub.3 is H, C.sub.1 -C.sub.18 alkyl, cyclohexyl, cyclopentyl, phenyl, C.sub.1 -C.sub.12 alkylphenyl, benzyl or C.sub.1 -C.sub.12 alkylbenzyl, are reversible photochromic systems which can be used for contrast formation, light absorption or for the reversible optical storage of information.
摘要:
When irradiated, a mixture of (a) a non-volatile substance containing at least one olefinic double bond and (b) a dibenzalacetone palladium complex deposits zero-valent palladium. Electrically non-conductive carrier materials which have been coated with a layer of said mixture can, after irradiation, be metallized by metal deposition without current, with electrically conductive coatings or patterns being obtained.
摘要:
Compounds of formula I ##STR1## wherein R.sub.1 is hydroxyl or glycidyloxy, R.sub.2 is hydrogen, alkyl, alkoxy, halogen, aryl, aralkyl or alkaryl, R.sub.3 is hydrogen or alkyl or both R.sub.3 s together are alkylene, and q is 1 to 3.5, together with epoxy resins and thermoactivatable hardeners and/or curing catalysts, are suitable for the preparation of curable mixtures. The cured products obtained therefrom can be employed for the preparation of electrically conductive coatings or patterns by tempering at elevated temperature or by irradiation with actinic light. Metal can be deposited without current on said electrically conductive coatings or patterns.
摘要:
Novel xanthones and thioxanthones of the formula I ##STR1## in which A, X, Y, Z, E and E' are as defined in patent claim 1, are described. A is preferably --S-- and E and E' are preferably bonded in the ortho-position relative to one another. The compounds (I) are suitable, for example, as sensitizers for photocrosslinkable polymers or photocurable compositions, or for use in mixtures with polymers with H donor groups for image formation, in particular electrically conductive coatings and patterns, by means of electroless deposition of metals.
摘要:
Photosensitive compositions of matter which are capable of undergoing condensation or addition reactions and may or may not be crosslinkable, and which contain an anthraquinone of the formula I ##STR1## in which X, X', R' and R" are as defined in patent claim 1 and X or X' is, for example, --OH or --NH.sub.2, at least one monomeric, oligomeric or polymeric compound which can be reacted with this anthraquinone, for example, if X is --OH, a polymer with terminal glycidyl groups, and, where relevant, a crosslinking agent and/or a salt of a metal of group Ib or VIII of the periodic table, are suitable for image formation by means of electroless metal deposition.