Abstract: Process for the production of dyed oxide layers on aluminum or aluminum alloys by dyeing in an aqueous dyebath, rinsing with water and sealing, in which the dyeing is carried out using at least one water-soluble anionic dye (A) which possesses at least one substituent and/or component combination with a ligand character that is capable of forming a nickel complex with nickel ions, and the sealing is carried out by cold sealing with at least one sealing agent preparation (B) containing nickel ions Ni2+ and fluoride ions F− and optionally hot secondary sealing with water, especially for achieving dyeings of improved light fastness.

Abstract: A filled polyolefin, particularly polypropylene, containing a sterically hindered phenol antioxidant and a compound of formula I and/or II ##STR1## in which R is unsubstituted phenyl or phenyl substituted by 1 or 2 C.sub.1-12 alkyl groupsn is 0 or 1 andA is a monofunctional or difunctional residue of a phenyl, diphenyl, diphenyl ether, diphenylmethane or dibenzofuran,as processing stabilizer has good long-term stability even in the absence of conventional sulphur-containing co-stabilizers.

Abstract: Aryl phosphonites and thiophosphonites of the formula, ##STR1## in which the or each R, independently, is alkyl, alkoxy, chlorine or dialkylamino, there being at the most one dialkylamino group, at the 4-position and unaccompanied by any other substituents, on the benzene nucleus,n is zero, 1, 2 or 3,each X, independently, is oxygen or sulphur,and each R.sub.1, independently, is alkyl or optionally substituted phenyl,are useful as antioxidants. Organic material, e.g. polypropylene, which are susceptible to the degradative effects of oxygen, are treated with one or more of such compounds, e.g. by incorporation into the body of the organic material, in order to be stabilized against such effects.

Abstract: Fluorene phosphonites and thiophosphonites of the formula, ##STR1## in which each R, independently, is alkyl or optionally substituted phenyl, each Y, independently, is oxygen or sulphur, and n is zero or 1, are useful as antioxidants. Organic materials, which are susceptible to the degradative effects of oxygen, are treated with one or more of such compounds e.g. by incorporation into the body of the organic material, in order to be stabilized against such effects.

Abstract: Novel compounds based on a hydroxybiphenyl nucleus in which the hydroxy group is in the para position relative to the other phenyl ring and has an adjacent tertiary alkyl radical, are useful stabilizers for organic compounds against heat, light or oxygen.

Abstract: Organic materials are stabilized against the effects of heat, light or oxygen by addition of a compound of the formula ##STR1## WHEREIN X is --CH.sub.2 --, --O-- or -- S--,Y.sub.1, y.sub.2, y.sub.3 and Y.sub.4 are --O-- or --S--,R.sub.1, r.sub.2, r.sub.3 and R.sub.4 are hydrogen or hydrocarbon radicalsn is 0 or 1And rings A and B may be further substituted by 1 or 2 alkyl groupsOr an inorganic salt of such a compound in which any of R.sub.1 -R.sub.4 are hydrogen.

Abstract: The purpose of the invention are new benzene phosphonous acid compounds in which two to four benzene nuclei are bound together and which contain one to three phosphorus atoms. The new compounds are free acids, their salts with inorganic cations, their esters, thioesters or amides. The invention concerns also the manufacture of these benzene phosphonous acid compounds and their use for the stabilization of organic materials.

Abstract: The present invention concerns novel nitrogen-containing aromatic heterocyclic compounds of the formula: ##STR1## wherein R is a group of the formula ##STR2## wherein R.sub.1 and R.sub.2 are substituents, e.g. alkyl and R.sub.3 is hydrogen or a substituent, e.g. alkyl; R.sub.4 is a group R.sub.14 --X--, wherein R.sub.14 is a substituent, e.g. alkyl and X is --O--, --S-- or ##STR3## wherein R.sub.6 is hydrogen or a substituent, e.g. alkyl, or R.sub.4 is a heterocyclic ring or has one of the significances of R; R.sub.5 has one of the significances of R.sub.4 ; and Y is --N.dbd. or --CH.dbd..The compounds are useful as anti-oxidants in, e.g. plastics materials.

Abstract: Triazine derivatives of formula ##STR1## in which R.sub.1 is a tertiary alkyl radical,R.sub.2 is hydrogen or a substituent, e.g. alkyl,n is 0 or an integer,R.sub.3 is --NH-- or --O--CH.sub.3 --.sub.mWherein m is an integer,X is --O--, --S-- or --NR.sub.6 --,wherein R.sub.6 is hydrogen or a substituent, e.g. alkyl or phenyl,R.sub.4 is one of the radicals signified by R.sub.6, or, when X is --NH--, a radical of formula ##STR2## R.sub.1, R.sub.2, n and R.sub.3 being as indicated above, OR R.sub.4, R.sub.6 and the common nitrogen atom, and optionally a further hetero atom, form a saturated 5- or 6-membered heterocyclic ring,And R.sub.5 is one of the radicals signified by --X--R.sub.4, or a substituent, e.g. alkyl,Are useful for stabilizing organic materials, e.g. polypropylene, against the degradative effects of oxygen, heat and/or light.

Abstract: The purpose of the invention are new benzene phosphonous acid compounds in which two to four benzene nuclei are bound together and which contain one to three phosphorus atoms. The new compounds are free acids, their salts with inorganic cations, their esters, thioesters or amides. The invention concerns also the manufacture of these benzene phosphonous acid compounds and their use for the stabilization of organic materials.

Abstract: The present invention concerns novel aromatic heterocyclic hydrazide derivatives of the formula: ##SPC1##Wherein A is a radical ##SPC2##Wherein R.sub.1 is tertiary alkyl and R.sub.2 and R.sub.3 are hydrogen or substituents, e.g. alkyl, R.sub.4 is a group -X-R.sub.14.sub.' wherein X is a bridging function, e.g. O, and R.sub.14 is a substituent, e.g. alkyl, a heterocyclic group--N Zwherein Z, with the nitrogen atom, forms a heterocyclic ring or a radical -NH-A, wherein A is as defined above, R.sub.5 has inter alia one of the significances of R.sub.4 and Y is -N= or -CH=, which are useful antioxidants, e.g. for stabilizing plastics material.

Abstract: The purpose of the invention are new benzene phosphonous acid compounds in which two to four benzene nuclei are bound together and which contain one to three phosphorus atoms. The new compounds are free acids, their salts with inorganic cations, their esters, thioesters or amides. The invention concerns also the manufacture of these benzene phosphonous acid compounds and their use for the stabilization of organic materials.