摘要:
Inorganic-organic foams are obtained by foaming a mixture of(a) a 5 to 60% by weight aqueous alkali metal silicate or ammonium silicate solution,(b) a sufficient amount of a conventional hardener for aqueous silicate solutions,(c) a polymer of (meth)acrylic acid or a copolymer of acrylic acid and methacrylic acid or of (meth)acrylic acid and a copolymerizable monomer containing ethylinic double bonds, the polymer and copolymer being soluble in the aqueous silicate solution, some or all the carboxyl groups of the polymer or copolymer, where relevant, being neutralized by a base and the amount of polymer or copolymer being 0.1 to 30 parts per 100 parts of SiO.sub.2 contained in the aqueous silicate solution,(d) a blowing agent,(e) a surfactant having a foaming action and, where relevant,(f) gelling agent for solidifying the foam before hardening and/or conventional fillers, and allowing the foam to harden.The foams can be used as insulating materials in the construction industry.
摘要:
The invention relates to compositions containinga) at least one organic polymer andb) a dibenzalacetone palladium complex of formula I ##STR1## which is homogeneously dissolved in said polymer but is not copolymerisable therewith, in which formula IR.sup.1 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.18 alkoxy or unsubstituted or substituted phenyl,R.sup.2 has one of the meanings of R.sup.1 or is also an amino, nitro or cyano group, an --O--C.sub.m H.sub.2mn OR.sup.4 or --O--CH.sub.2 --CH.OR.sup.4 --CH.sub.2.OR.sup.5 radical or a halogen atom or a glycidyl ether radical,R.sup.3 is hydrogen or C.sub.1 -C.sub.4 alkyl or the two groups R.sup.3 together form a C.sub.2 -C.sub.4 polymethylene chain,R.sup.4 and R.sup.5 have one of the meanings of R.sup.1,q is a value from 1 to 3.5,m is a value from 2 to 6 andn is a value from 0 to 20, with the proviso that the composition does not contain a polymer with an olefinic double bond.Said compositions can be used for metal deposition without current or for producing conductive patterns.
摘要:
Dehydrogenated poly(spiro[2,4]hepta-4,6-diene) which is insoluble in organic solvents, has an electrical conductivity of at least 10.sup.-10 S.times.cm.sup.-1, and contains, relative to the total number of recurring structural units in the polymer, 0-90 mol % of the recurring structural units of the formulae I and II ##STR1## in which R.sup.1 is in each case a hydrogen atom or an alkyl group having 1 to 4 C atoms, and 10-100 mol % of at least one of the recurring structural units of the formulae III to VI ##STR2## in which R.sup.1 is as defined in formula I or II and X.sup.- is a bromide or iodide ion or an anion of a Lewis or protonic acid, is obtained by treating poly(spiro[2,4]-hepta-4,6-diene) with bromine, iodine or a Lewis or proton-donating acid, and can be used in an electrically conducting material for the production of, for example, conductors, electrodes, batteries or semiconductor components.
摘要:
This invention pertains to an acrylate or methacyrate of monohydric or dihydric, mononuclear or binuclear phenols which are substituted by allyl, methallyl or 1-propenyl groups, or hydroxyalkyl ethers thereof.The acrylates or methacrylates of the invention can be used in compositions useful in a casting or impregnating resin, adhesive, lacquer and binder which can be cured by irradiation and/or heat.
摘要:
Mixtures which can be cured to give moulded materials having technically very valuable mechanical and dielectric properties, characterized in that they contain(a) mono-, bis- or tris-maleimides and/or maleimide pre-polymers of the maleimides with an aliphatic, cycloaliphatic or aromatic diprimary diamine,(b) acetone-anil, and optionally(c) a copolymerizable compound containing at least one olefinic C.dbd.C double bond in the molecule.
摘要:
Epoxysiloxanes having, per molecule, at least two groupings of the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another are C.sub.1 -C.sub.10 alkyl, C.sub.1 -C.sub.10 alkyoxy, C.sub.3 -C.sub.8 cycloalkyl, C.sub.6 -C.sub.10 aryl, benzyl or a halogen atom and in which each grouping of the formula I in each case is attached directly to a silicon atom of the siloxane radical, are suitable for use as epoxy resins. They can be used together with customary epoxy resin curing agents, for example, for the production of adhesives, sealing materials, lacquers or encapsulating resins, and afford products having excellent properties. The epoxysiloxanes according to the invention are also valuable reactive thinners and flexibilizers for curable epoxy resin mixtures.
摘要:
The invention relates to compositions of a soluble polyimide and polypyrrole. These compositions can preferably be prepared by anodic oxidation of pyrrole or a pyrrole derivative at electrodes coated with polyimide. They make it possible to prepare free standing electrically conductive films.
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:
Compounds of formula I or II ##STR1## in which formulae R.sup.1 and R.sup.2 are each independently of the other hydrogen, alkyl, alkenylmethyl, cyclohexyl, phenyl, benzyl or tolyl, or are a --CH.sub.2 CHR.sup.3 --CH.sub.2 --S--H group, R.sup.3 and R.sup.4 are each independently of the other hydrogen or methyl, X is alkylene, --S--, --SO--, --SO.sub.2 -- or substituted alkylene, R.sup.5 and R.sup.6 are each independently of the other hydrogen or alkyl, R.sup.8 is hydrogen, alkyl, alkenylmethyl or phenyl, and wherein n is an integer from 1 to 10, can be used as hardeners for epoxy resins.The compositions containing epoxy resins and these hardeners are particularly suitable for use as adhesive formulations. The cured products have good moisture resistance.
摘要:
Mono- and polyvalent phenolglycidyl ethers which contain in the molecule at least one 1-propenyl group in the ortho- or para-position with respect to the glycidyl ether group, or isomeric mixtures of mono- or polyvalent phenolglycidyl ethers which are propenyl-substituted in the ortho or para-position with respect to the glycidyl ether group and mono- or polyvalent phenolglycidyl ethers which are allyl-substituted in the ortho- or para-position with respect to the glycidyl ether group, the proportion of propenyl groups in the isomeric mixture having to be at least 5 equivalent-%, relative to the sum of the equivalents of propenyl and allyl groups, are obtained by a process wherein the propenyl-substituted phenols, or isomeric mixtures of propenyl- and allyl-substituted phenols, are glycidylated with an epihalohydrin. The novel compounds can be converted, both by use of curing agents for epoxide resins and by radical polymerization, into polymers having valuable mechanical properties.