摘要:
A description is given of the use of naphthalene-1,8-dicarboxylic monoimides of the formula (I), in which R1 is hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, heterocycloalkyl, aryl or heteroaryl and R2 is a radical containing at least one π electron system containing a carbon atom and at least one further atom selected from carbon, oxygen, and nitrogen, with the proviso that the radical contains at least one atom other than carbon; to protect organic material from the damaging effects of light, of compositions which comprise at least one naphthalene-1,8-dicarboxylic monoimide of the formula (I) in an amount which provides protection from the damaging effects of light, and at least one organic material, and of new naphthalene-1,8-dicarboxylic monoimides (I).
摘要:
A description is given of the use of naphthalene-1,8-dicarboxylic monoimides of the formula I in which R1 is hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, heterocycloalkyl, aryl or heteroaryl and R2 is a radical containing at least one π electron system containing a carbon atom and at least one further atom selected from carbon, oxygen, and nitrogen, with the proviso that the radical contains at least one atom other than carbon; to protect organic material from the damaging effects of light, of compositions which comprise at least one naphthalene-1,8-dicarboxylic monoimide of the formula I in an amount which provides protection from the damaging effects of light, and at least one organic material, and of new naphthalene-1,8-dicarboxylic monoimides I.
摘要:
The present invention relates to a process for preparing dye-comprising aqueous polymer dispersions by free-radical aqueous emulsion polymerization of ethylenically unsaturated monomers in the presence of free-radical initiators, in which at least some of the monomers are employed in the form of an oil-in-water emulsion E1 whose disperse phase comprises at least one oil-soluble dye, wherein the disperse phase of E1 is formed essentially of dye-comprising monomer droplets having a diameter
摘要:
A process for preparing quaterrylene-3,4:13,14-tetracarboximides of the general formula I in which R, R′ are each independently hydrogen or optionally substituted C1-C30-alkyl, C5-C8-cycloalkyl or aryl or hetaryl; which comprises reacting a perylene-3,4-dicarboximide of the general formula IIa in the presence of a base-stable, high-boiling, organic solvent and of an alkali metal base or alkaline earth metal base, with a perylene-3,4-dicarboximide of the general formula IIb in which X is hydrogen, bromine or chlorine.
摘要:
Dibenzorylenetetracarboximides of the general formula I in which the variables are each defined as follows: R′ are identical or different radicals: hydrogen; optionally substituted aryloxy, arylthio, hetaryloxy or hetarylthio; R are identical or different radicals: hydrogen; optionally substituted C1-C30-alkyl, C3-C8-cycloalkyl, aryl or hetaryl; m, n are each independently 0 or 1.
摘要:
Black perylene pigments which comprise one of the isomers of the formula Ia or Ib in which R1, R2 are each independently phenylene, naphthylene or pyridylene, each of which may be mono- or polysubstituted by C1-C12-alkyl, C1-C6-alkoxy, hydroxyl, nitro, and/or halogen; X is halogen; n Is from 0 to 4, or comprises a mixture of both isomers and has a blackness value ≧210 in an alkyd/melamine baking varnish.
摘要:
Perylene-3,4-dicarboximides I ##STR1## (R.sup.1 is hydrogen; C.sub.1 -C.sub.8 -alkyl; C.sub.5 -C.sub.8 -cycloalkyl; substituted or unsubstituted phenyl or naphthyl;R.sup.2 independently at each occurrence is hydrogen; C.sub.1 -C.sub.18 -alkyl, substituted or unsubstituted aryloxy, arylthio, hetaryloxy or hetarylthio)are prepared by reacting the corresponding perylene-3,4,9,10-tetracarboxylic acid or its anhydride (II) with an amide IIIR.sup.3 --CO--NHR.sup.1 III(R.sup.3 : C.sub.1 -C.sub.4 -alkyl or --NR.sup.4 R.sup.5 where R.sup.4 and R.sup.5 independently are hydrogen or one of the R.sup.1 alkyls, cycloalkyls, phenyls or naphthyls and where if two or more of R.sup.1, R.sup.4 and R.sup.5 are other than hydrogen they are identical)under superatmospheric pressure in the presence of an inert diluent and a transition metal catalyst.
摘要:
Provided is a process for fusion-bonding plastic parts with the aid of laser radiation of a wavelength outside the visible region, wherein a bonding region of a plastic part to be bonded comprises at least one material which is transparent in the visible region of the electromagnetic spectrum, is substantially colorless and absorbs the laser radiation, wherein the material comprises at least one nonionic compound that is resistant to the laser radiation, has a thermal stability of at least 300° C. and is selected from polycyclic organic compounds, doped tin oxides and hexaborides MB6 of lanthanides and alkaline earth metals M. Also provided is a preparation suitable for producing fusion-bonded plastic parts with the aid of laser radiation whose wavelength is outside the visible region, the preparation comprising: a thermoplastic matrix polymer suitable for forming the plastics parts; at least one of said material; optional UV stabilizers; and optional additives.
摘要:
A process for preparing perylene-3,4:9,10-tetracarboxylic diimides of the general formula I comprising dimerizing a naphthalene-1,8-dicarboximide of the formula II in a reaction medium consisting essentially of an apolar aprotic organic solvent and an alkali metal base and subsequently reoxidizing the resulting alkali metal salt of the leuco form of the perylene-3,4:9,10-tetracarboxylic diimide in the presence of a polar solvent.
摘要:
Tert-alkylphenoxy-substituted polycyclic compounds of the general formula I where P is a conjugated polycyclic radical which is stable to bases and nucleophiles, optionally bears aryl substituents and contains no group from the group consisting of —CO—NH—CO—, —COOH and —CO—O—CO—; R is C1–C8-alkyl, whose carbon chain may be interrupted by one or more groups selected from the group consisting of —O—, —S—, —NR1—, —CO— and/or —SO2— and which may be monosubstituted or polysubstituted by C1–C6-alkoxy or by a 5- to 7-membered heterocyclic radical which is attached via a nitrogen atom and may contain further heteroatoms and be aromatic; C5–C8-cycloalkyl whose carbon chain may be interrupted by one or more groups selected from the group consisting of —O—, —S—, —NR1—, —CO— and/or —SO2— and which may be monosubstituted or polysubstituted by C1–C6-alkyl; R1 is hydrogen or C1–C6-alkyl; Hal is chlorine and/or bromine; m is from 0 to 15; n is from 1 to 16, subject to the proviso that the sum m+n is ≦16, are prepared and used.