Abstract: The invention relates to a process for stabilizing an organic phosphite or phosphonite or a mixture of organic phosphites or phosphonites against hydrolysis, which comprises adding, as the stabilizer, a compound from the class of sterically hindered amines, so that the stabilized phosphite or phosphonite contains 0.1 to 25% by weight of the amine compound (relative to the phosphite or phosphonite).Compositions comprising organic phosphite or phosphonite and sterically hindered amines are notable for excellent hydrolytic stability and have a long shelf life even at high atmospheric humidity.The products of the process according to the invention are very useful as stabilizers for organic material, in particular organic polymers, for example synthetic polymers, against the damaging influence of heat, oxygen and/or light.

Abstract: A process for the preparation of 4-hydroxy-1,2,2,6,6-pentamethylpiperidine (HPMP) from 4-oxo-2,2,6,6-tetramethylpiperidine (TAA) is described, in which TAA is first reduced to 4-hydroxy-2,2,6,6-tetramethylpiperidine (HTMP) by means of catalytic hydrogenation in water, the resulting crude solution, if desired after concentration by distillation, is reacted with formaldehyde or paraformaldehyde in at least 20% molar excess, and with formic acid, and the crude product melt separated from the reaction mixture is worked up by distillation.

Abstract: Novel oligomeric compounds of formula I ##STR1## wherein the general symbols are as defined in claim 1, are disclosed as stabilisers for protecting organic material against oxidative, thermal or light-induced degradation.

Abstract: The invention relates to a color-photographic recording material which comprises a magenta coupler and, as stabilizer, at least one compound of formula (Ia), (Ib) or (II), where the radicals are as defined in claim 1, and to the novel stabilizers.

Abstract: o-Hydroxyphenyl-s-triazines are described which contain at least two alkoxyphenyl substituents. They have the formula (1). The compounds according to the invention are suitable as stabilizers for textile fiber materials, in particular polyester fiber materials, and for organic polymers. Furthermore, they are suitable for use as sunscreens in cosmetic preparations.

Abstract: Coatings comprisingA) a binder based on an organic polymer andB) as stabilizer against damage by light, heat and oxygen, a 2-(2'-hydroxyphenyl)-1,3-pyrimidine of the formula I ##STR1## in which the radicals R.sub.1 to R.sup.6 are as defined in claim 1 have an outstanding resistance to the damaging effects of light, oxygen and heat. Compounds of the formula Ib defined in claim 18 are suitable in general for the stabilization of organic material.

Abstract: The present invention provides a diarylide pigment composition which contains a long chain aliphatic primary amine having 10 to 24 carbon atoms; an ethylene polyamine of the formulaH.sub.2 N(CH.sub.2 CH.sub.2 NH).sub.n Hwhere n is 1 to 5; and a propylene triamine of the formulaRNH(CH.sub.2 CH.sub.2 CH.sub.2 NH).sub.2 HorRN(CH.sub.2 CH.sub.2 CH.sub.2 NH.sub.2).sub.2where R is a long chain alkyl group having 10 to 24 carbon atoms.

Abstract: The invention relates to diketopyrrolo?3,4-c!pyrroles of formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, halogen, C.sub.1 -C.sub.6 alkyl, cyano or a --OR.sub.3, --COOR.sub.3, --CON(R.sub.3)(R.sub.4), --COR.sub.3 or --N(R.sub.3)(R.sub.4) group, and R.sub.3 and R.sub.4 are each independently of the other hydrogen, C.sub.1 -C.sub.6 alkyl, phenyl which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.6 alkyl.Said diketopyrrolo?3,4-c!pyrroles are pigments colored in a strong yellow shade having good fastness properties.

Abstract: Compositions comprising compounds of formula ##STR1## wherein the radicals R and R.sub.1 to R.sub.5 are as defined in claim 1, are described.Some of those compounds are novel. They are suitable for the stabilization of organic materials.

Abstract: The invention relates to novel compounds of formula I ##STR1## wherein X is a direct bond, sulfur or --CHR.sub.5 --, R.sub.1 is hydrogen, C.sub.1 -C.sub.25 alkyl, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.8 cycloalkyl; unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.8 cycloalkenyl; unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted phenyl; C.sub.7 -C.sub.9 phenylalkyl or --CH.sub.2 --S--R.sub.6 ; R.sub.2 is hydrogen, C.sub.1 -C.sub.25 alkyl, C.sub.2 -C.sub.24 alkenyl, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.8 cycloalkyl; unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.8 cycloalkenyl; unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted phenyl; C.sub.7 -C.sub.9 -phenylalkyl or --CH.sub.2 S--R.sub.6 ; R.sub.3 is hydrogen or methyl; R.sub.4 is C.sub.1 -C.sub.8 alkyl, O.sup..cndot., OH, NO, --CH.sub.2 CN, C.sub.1 -C.sub.18 alkoxy, C.sub.5 -C.sub.12 cycloalkoxy, C.sub.3 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, C.sub.1 -C.

Abstract: The invention relates to novel compounds of the formula I ##STR1## in which the general symbols are as defined in claim 1, as stabilizers for organic materials against oxidative, thermal or light-induced degradation.

Abstract: Esters or phenol ethers of the formula I or II ##STR1## in which m and n are each an integer from the range from 1 to 6; A.sup.1 is an m-valent hydrocarbon radical having 1 to 30 carbon atoms; or an m-valent hydrocarbon radical having 2 to 30 carbon atoms, which contains the heteroatoms oxygen, nitrogen and/or sulfur and the free valencies of which are located on carbon atoms and in which A.sup.1, in the case where m=2, additionally is a direct bond;A.sup.2 is an n-valent aromatic or araliphatic hydrocarbon radical having 6 to 30 carbon atoms; or an n-valent aromatic or araliphatic hydrocarbon radical having 5 to 30 carbon atoms, which contains the heteroatoms oxygen, nitrogen and/or sulfur and n free valencies of which are located on those carbon atoms which are a constituent of aromatic rings;R.sup.1 is hydrogen; a hydrocarbon or hydrocarbonoxy radical having 1 to 36 carbon atoms, which is unsubstituted or substituted by --CO--N(R.sup.3).sub.2 or interrupted by --CO--N(R.sup.3)-- or --N(R.sup.

Abstract: Mixtures of four .alpha.-alkoxy-substituted phthalocyanine isomers, predominantly ##STR1## or of four .beta.-alkoxy-substituted phthalocyanine isomers, whereMe is a divalent metal atom or a divalent oxo metal,R.sub.1 is a linear or branched C.sub.1 -C.sub.16 alkyl, C.sub.3 -C.sub.16 alkenyl or C.sub.3 -C.sub.16 alkynyl radical which is unsubstituted or substituted by C.sub.1 -C.sub.12 alkoxy, --CN, NO.sub.2, halogen, --OH, phenyl, cyanophenyl, nitrophenyl, halophenyl, hydroxyphenyl or (C.sub.1 -C.sub.12 alkoxy)phenyl,wherein two isomers of the formula II and of the formula III make up at least 80% of the total mixture and the two other isomers make up at most 20% of the total mixture, with the ratio between the compounds of the formula II and the compounds of the formula III being from 0.3 to 3.0:1.The isomer mixtures can be obtained by reacting .alpha.- or .beta.

Abstract: Products are described which can be obtained by reacting components a), b), c) and d), where component a) is a compound of the formula I or a mixture of compounds of the formula I, component b) is a compound of the formula II or a mixture of compounds of the formula II, component c) is a compound of the formula III or a mixture of compounds of the formula III and component d) is a compound of the formula IV or a mixture of compounds of the formula IV, ##STR1## in which the general symbols are as defined in claim 1, the compound of the formula I being, for example, pentaerythritol, thiodiethylene glycol, 1,4-butanediol, 1,2-propanediol, diethylene glycol, triethylene glycol, diethanolamine or glycerol, the compound of the formula II being, for example, sunflower oil or coconut fat, the compound of the formula III being, for example, methyl 3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate and the compound of the formula IV, being for example, sulfur or diisopropyl dithiophosphate.

Abstract: The present invention provides a method of reducing the tendency of a resinated pigment product to self-heat which comprises treating an aqueous slurry of the pigment with a compound of a multivalent metal or metalloid under conditions such as will precipitate an insoluble compound of the metal or metalloid on the pigment, and then isolating the treated pigment.

Abstract: Novel process for the preparation of 2,2,6,6-tetramethyl-4-piperidyloxy-1,3,5-triazines, based on the reaction of cyanuric chloride with C.sub.1 -C.sub.4 alkanols or with sodium or potassium C.sub.1 -C.sub.4 alkoxides and subsequent reaction with 2,2,6,6-tetramethyl-4-piperidinols in the presence of a transesterification catalyst.The various reactions can be carried out in the same reactor, without isolation of the intermediates.

Abstract: Diketopyrrolopyrrole of the formula ##STR1## in its .beta.-modification. The new .beta.-modification is likewise suitable as a pigment for coloring high-molecular weight organic material and, in comparison to the a-modification, shows a shift in shade towards yellowish-red.

Abstract: Pigment compositions comprising an organic pigment whose particle surface is provided with a protective coating layer, which coating comprises(a) a metal phosphate complex in which the metal is selected from the group consisting of, zirconium, titanium and mixtures thereof in a quantity of from 0.5 to 100% by weight, preferably to 20% by weight, particularly preferably from 1 to 10% by weight, based on the pigment; and(b) an amine or ammonium salt, in a quantity of from 0.5 to 15% by weight, preferably up to 10% by weight, particularly preferably up to 5% by weight, based on the pigment. The compositions are distinguished by outstanding properties, especially by the high gloss of the colorations obtained therewith, by very good dispersibility, high dispersion stability and heat resistance and by very good rheological characteristics of the paint millbases or printing inks prepared therewith. The plastics pigmented with the compositions of the invention are likewise distinguished by good dispersibility.