摘要:
Isoindoline metal complexes of the formula I ##STR1## wherein R.sup.1 and R.sup.2 are independently of each other H or C.sub.1 -C.sub.4 -alkyl, X.sup..crclbar. is one equivalent of a colorless anion and Me is Zn.sup.2+, Ni.sup.2+, Co.sup.2+ or Cu.sup.2+, are suitable for pigmenting surface coatings, plastics and printing inks.
摘要:
Tetrachloro-3-iminosisoindolin-1-one (I) or its alkali metal salt (Ia) is prepared by reacting tetrachloro-ortho-phthalodinitrile with lithium hydroxide, sodium hydroxide and/or potassium hydroxide in substantially anhydrous tert-butanol and, if desired, liberating (I) from (Ia) by means of a dilute acid.
摘要:
A compound having the formula (I): ##STR1## wherein D is a radical of a heterocyclic or aromatic component selected from the group of aniline, anthraquinone, phthalimide or aminobenzene radicals, wherein the radical is unsubstituted or is substituted by fluorine, chlorine, bromine, nitro, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, trifluoromethyl, cyano, C.sub.1 -C.sub.4 -alkylsulfonyl, carboxylic acid ester groups, carbamyl, sulfamyl, 1,3,4- or 1,2,4-oxadiazolyl or acylamino groups; X is CO-- or --SO.sub.2 --; and R is an aliphatic, aromatic or heterocyclic radical selected from the group of C.sub.1 -C.sub.20 alkyl which is unsubstituted or is substituted by chlorine, bromine, cyano or dialkylamino groups; or phenyl or methyl groups unsubstituted or substituted by fluorine, bromine, methyl, ethyl, methoxy, ethoxy, cyano, carbamyl, sulfamyl or acylamino groups; or amino group; or a radical of the formula: ##STR2## wherein ring a is unsubstituted or is substituted by nitro, fluro, bromine or methoxy groups; and ring b is unsubstituted or is substituted by chlorine, bromine or nitro groups.The majority of the compounds of the formula (I) have yellow hues and are used as pigments in printing inks and finishes, and as disperse dyes for synthetic fibers.
摘要:
J-Acid urea of the formula ##STR1## is prepared by reacting 7-amino-4-hydroxynaphthalene-2-sulfonic acid (J-acid) with urea at from 100.degree. to 140.degree. C. under a pressure ranging from atmospheric pressure to 10 bar in an inert solvent to a partial extent, precipitating unconverted J-acid in an acidic medium and separating it off, and, if desired, isolating J-acid urea from the resulting neutralized solution by salting out.
摘要:
N-hydroxypyrazoles of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 may be identical or different and are each hydrogen or halogen, are prepared by a process in which a pyrazole of the general formula II ##STR2## where R.sup.1, R.sup.2 and R.sup.3 have the meanings stated for formula I, is reacted with an aliphatic or aromatic peroxocarboxylic acid, preferably in the presence of from 0 to 15 moles of an alkali metal hydroxide, alkaline earth metal hydroxide, alkali meteal carbonate or alkaline earth metal carbonate in such a way that the reaction temperature is from -5.degree. C. to 60.degree.C.The reaction can be carried out in water as a solvent or in a 2-phase system consisting of water and an inert organic solvent which is poorly miscible with water, in the presence or absence of a suitable phase transfer catalyst. The peroxocarboxylic acid can be prepared in the reaction mixture before the reaction from H.sub.2 O.sub.2 and an acyl halide or a carboxylic anhydride or can be used in the form of an alkali metal salt or alkaline earth metal salt.
摘要:
A tetrachloroperylene-3,4,9,10-tetracarboxylic acid diimide pigment which contains not less than 85% by weight of the tetrachloro compound of the formula ##STR1## which is present to the extent of not less than 95% by weight in the .beta.-modification and which, in an X-ray spectrum, exhibits 2.sup..crclbar. CuK.sub..alpha. main lines at 9.0.degree., 13.3.degree., 15.0.degree., 16.8.degree., 19.1.degree., 21.5.degree., 24.2.degree., 25.4.degree., 26.5.degree., 27.0.degree. and 27.5.degree..In finishes, the pigment gives very brilliant colorations which are very highly lightfast and fast to weathering and which, upon weathering, neither bleach nor darken up.
摘要:
The compounds of the formula ##STR1## where Y is hydrogen, chlorine, bromine or nitro, Z is hydrogen, chlorine, bromine, a sulfonic ester group or unsubstituted or substituted sulfamyl, X is --O-- or ##STR2## R is alkylene which may or may not be interrupted by oxygen or ##STR3## m is 0 or 1, p is 1 or 2, R.sup.1 and R.sup.2 independently of one another are each hydrogen, unsubstituted or substituted alkyl, alkenyl, cycloalkyl, aralkyl, or aryl, or R.sup.1 and R.sup.2 together with the nitrogen form a heterocyclic structure, R.sup.3 is hydrogen or unsubstituted or substituted alkyl, R.sup.6 and R.sup.7 independently of one another are each hydrogen, unsubstituted or substituted alkyl, alkoxy or acylamino, K is a radical of a coupling component, A.crclbar. is an anion, R.sup.4 is unsubtituted or substituted alkyl and R.sup.5 is hydrogen or C.sub.1 -C.sub.4 -alkyl, and the radical ##STR4## may furthermore be an unsubstituted or substituted piperazine radical, are useful for dyeing acid-modified fibers, leather and in particular paper.
摘要:
N-.alpha.-alkoxyethylformamides of the formula ##STR1## where R is C.sub.1 -C.sub.18 -alkyl, are prepared by reacting a vinyl ether of the formulaCH.sub.2 .dbd.CH--OR (II),where R has the meaning stated in the formula I, with formamide in the presence of an acidic or basic catalyst at from -10.degree. to 150.degree. C.
摘要:
2-(1-Hydroxycarbalkoxymethyl)-acrylonitriles and 2-(1-hydroxycarbalkoxymethyl)-acrylates are prepared by a process in which an acrylonitrile or an acrylate is reacted with a glyoxylate in an aqueous medium at a pH greater than or equal to 6, in the presence of a tertiary amine as a catalyst.
摘要:
Cured aminoplast resins are recycled by a process in which said resins, which may contain fillers, are treated with an aqueous sulfite, hydrogen sulfite or disulfite solution and the resulting low molecular weight degradation products are used in chemical processes. The resulting low molecular weight degradation products of cured aminoplast resins are used for coating moldings, for tanning leather and skins and for the production of moldings which contain cured aminoplast resins or consist thereof.