Abstract: The present invention relates to 4-formylamino-N-methylpiperidine derivatives of the formula (I) where the variables are as defined in the Description, to a process for preparing these piperidine derivatives, to the use of these piperidine derivatives of the invention, or prepared according to the invention, for stabilizing organic material, in particular for stabilizing plastics or coating materials, and also to the use of these piperidine derivatives of the invention, or prepared according to the invention, as light stabilizers or stabilizers for wood surfaces. The present invention further relates to stabilized organic material which comprises these piperidine derivatives of the invention or prepared according to the invention.

Abstract: Described is a stabilizer composition comprising a 3-arylacrylic ester, a polymeric compound having a molecular weight of at least 2000 which carries, on a polymeric framework, side groups having secondary amine functions, all substituents positioned to the amine nitrogen being other than hydrogen, a chroman derivative, and an organic phosphite and/or phosphonite. The stabilizer composition is particularly suitable for stabilizing thermoplastic polyurethane against light, oxygen and heat.

Abstract: A method of using compounds of formula I in which the C═C double bond is present in E and/or Z configuration and the variables have the following meanings: R1 denotes COOR5, COR5, CONR5R6, CN, O═S(—R5)═O, O═S(═OR5)═O, R7O—P(—OR8)═O; R2 denotes COOR6, COR6, CONR5R6, CN, O═S(—R6)═O, O═S(═OR6)═O, R7O—P(—OR8)═O; R3 denotes hydrogen, an optionally substituted aliphatic, cycloaliphatic, araliphatic or aromatic radical having in each case up to 18 carbon atoms; R4 denotes an optionally substituted aromatic or heteroaromatic radical containing from 5 to 12 ring atoms; R5 to R8 independently denote hydrogen, an open-chain or branched-chain aliphatic, araliphatic, cycloaliphatic or optionally substituted aromatic radical containing in each case up to 18 carbon atoms, where the variables R3 to R8 may also form, together with the carbon atoms to which they are attached, a 5-membered or 6-membered

Abstract: A monomer composition, which contains A) vinyl-containing monomers in which a heteroatom selected from the group consisting of the halogens, nitrogen, oxygen, sulfur and silicon is present on the vinyl group, and B) a compound or a mixture of compounds of the formula II  where R4 is methyl, ethyl, isopropyl, n-propyl, n-butyl, isobutyl, sec-butyl, tert-butyl or trimethylsilyl.

Abstract: Vinyl monomers are polymerized in the aqueous phase in the presence of at least one N-oxyl compound of a secondary amine, having no hydrogen atoms bonded to the &agr; carbon atoms. This process substantially eliminates deposits on reactor surfaces.

Abstract: A cosmetic preparation which comprises a sunscreen agent for protecting the human epidermis against UV light in the range from 280 to 400 nm, which comprises, in a cosmetically suitable carrier, alone or together with compounds which absorb in the UV region and are known for cosmetic preparations, as photostable UV-A filters, effective amounts of compounds of the formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are hydrogen or aliphatic or cycloaliphatic radicals each having up to 18 carbon atoms, it being possible for any two of the radicals R.sup.1, R.sup.2 and R.sup.3 together to form a 5- or 6-membered ring, and R.sup.4 and R.sup.5 are an unsubstituted or substituted aromatic or heteroaromatic radical having 5 to 12 ring atoms, and R.sup.5 can additionally be hydrogen.

Abstract: Maleimide/.alpha.-olefin copolymers are composed of structural units I ##STR1## where R.sup.1 is a tetramethylpiperidinyl radical of the formula II ##STR2## R.sup.3 is hydrogen, C.sub.1 -C.sub.6 -alkyl, formyl, C.sub.2 -C.sub.6 -alkanoyl, C.sub.1 -C.sub.12 -alkoxy, C.sub.5 - or C.sub.6 -cycloalkoxy, cyanomethyl, 2-hydroxyethyl, benzyl or a radical of the formula --CR.sup.4 =CH--CO--OR.sup.5, R.sup.4 is hydrogen, C.sub.1 -C.sub.6 -alkyl or a radical of the formula --CO--OR.sup.5, andR.sup.5 is C.sub.5 -C.sub.18 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.7 -C.sub.18 -aralkyl, phenyl or tolyl, andup to 8 mol %, based on II, of R.sup.1 may furthermore be hydrogen, C.sub.1 -C.sub.22 -alkyl or C.sub.5 -C.sub.8 -cycloalkyl, and R.sup.2 is a mixture of C.sub.14 -C.sub.28 -alkyl groups, where two of these alkyl groups, which may differ by no more than two carbon atoms, each account for at least 30% of this mixture, having an average molecular weight of from 1,000 to 50,000.

Abstract: N-Vinyl-containing glycoluril derivatives I ##STR1## where R.sup.1 and R.sup.2 independently of one another are each hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, phenyl, tolyl or C.sub.7 -C.sub.12 -phenylalkyl orR.sup.1 and R.sup.2 together form a tri-, tetra- or pentamethylene group,R.sup.3 to R.sup.6 are each C.sub.1 -C.sub.4 -alkyl,R.sup.7 is hydrogen, C.sub.1 -C.sub.8 -alkyl, cyano or a radical of the formula COOR.sup.9,R.sup.8 is cyano or a radical of the formula COOR.sup.9 andR.sup.9 is C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, phenyl, tolyl or C.sub.7 -C.sub.12 -phenylalkyl,are suitable as light stabilizers and stabilizers for organic material, in particular for plastics and coatings.

Abstract: Polyalkylpiperidine-containing acetic acid and 3-aminoacrylic acid derivatives I ##STR1## where R.sup.1 is hydrogen, C.sub.1 - to C.sub.6 -alkyl, formyl, C.sub.2 - to C.sub.6 -alkanoyl, C.sub.1 - to C.sub.12 -alkoxy, C.sub.5 - to C.sub.6 -cycloalkoxy, cyanomethyl, hydroxymethyl, 2-hydroxyethyl or a radical of the formula --CR.sup.3 =CH--CO--OR.sup.4, whereR.sup.3 is hydrogen, C.sub.1 -to C.sub.6 -alkyl or a radical of the formula --CO--OR.sup.4 andR.sup.4 is C.sub.1 - to C.sub.20 -alkyl, C.sub.5 - to C.sub.8 -cycloalkyl, C.sub.7 - to C.sub.18 -aralkyl, phenyl, tolyl or a radical of the formula --(CH.sub.2 CH.sub.2 O).sub.n H or --[CH(CH.sub.3)CH.sub.2 O].sub.n H, where n is a number from 1 to 30,X is O, NH or NR.sup.6, whereR.sup.6 is C.sub.1 - to C.sub.12 -alkyl, andY is hydrogen or a group of the formula =CH--NHR.sup.7 or =CH--NR.sup.6 R.sup.7, whereR.sup.7 is phenyl which can be substituted by one to three C.sub.1 - to C.sub.12 -alkyl, C.sub.1 - to C.sub.

Abstract: Aminovinylphosphonic esters I ##STR1## where R.sup.1 is cyano, a radical of the formula --CO--OR.sup.6 or a group of the formula ##STR2## R.sup.2, R.sup.3 and R.sup.6 are C.sub.1 -C.sub.20 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.7 -C.sub.18 -aralkyl, phenyl or tolyl,R.sup.4 is an unsubstituted or substituted phenyl or heterocyclic group defined belowR.sup.5 is hydrogen or C.sub.1 -C.sub.12 -alkyl,R.sup.7 is hydrogen, C.sub.1 -C.sub.6 -alkyl, formyl, C.sub.2 -C.sub.6 -alkanoyl, C.sub.1 -C.sub.12 -alkoxy, C.sub.5 - or C.sub.6 -cycloalkoxy, cyanomethyl, 2-hydroxyethyl, benzyl or a radical of the formula --CR.sup.8 .dbd.CH--CO--OR.sup.6,R.sup.8 is hydrogen, C.sub.1 -C.sub.6 -alkyl or a radical of the formula --CO--OR.sup.6, andX is oxygen or NH, are used as light, oxygen and heat stabilizers for organic material.

Abstract: A polyalky-piperidinyl-containing .beta.-aminoacrylic ester derivative represented by the formula I ##STR1## is useful in stabilizing plastic and paints against light, oxygen and heat.

Abstract: Compounds of the general formula (I) or (II) ##STR1## where m is 2 or 3,n is an integer from 1 to 6,R.sup.1 and R.sup.2 are, independently of one another, hydrogen, C.sub.1 - to C.sub.18 -alkyl, C.sub.3 - to C.sub.8 -alkenyl or C.sub.5 - to C.sub.12 cycloalkyl, R.sup.4 and R.sup.5 are, independently of one another, hydrogen, C.sub.1 - to C.sub.18 -alkyl, C.sub.3 - to C.sub.8 -alkenyl, C.sub.5 - to C.sub.12 -cycloalkyl or C.sub.7 - to C.sub.12 -phenylalkyl, in which the phenyl ring may be substituted by up to 3 C.sub.1 - to C.sub.12 -alkyl or C.sub.1 - to C.sub.12 -alkoxy groups,X is oxygen or NR.sup.3,R.sup.3 is an R.sup.1 radical or a group of the formula ##STR2## B completes a 3- to 12-membered heterocycle, A when n=1 is an aliphatic radical or unsubstituted or substituted phenyl, andA when n>1 is a divalent organic radical, are used as processing stabilizers for thermoplastic materials.

Abstract: Esters and amides of aminomethylenecyanoacetic acid I ##STR1## where R.sup.1 and R.sup.2 are each, independently of one another, phenyl, naphthyl, biphenylyl or five- or six-membered hetaryl with one, two or three nitrogens or one oxygen or one sulfur or one nitrogen and one oxygen or one nitrogen and one sulfur, which can be benzo-fused, it being possible for these radicals to be substituted by one to three C.sub.1 -C.sub.12 -alkyl groups, C.sub.1 -C.sub.12 -alkoxy groups, halogen atoms, cyano groups, hydroxyl groups or groups of the formulae COOR.sup.3, COR.sup.3, CONHR.sup.3, OCOR.sup.3 or NHCOR.sup.3, and whereR.sup.3 is C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl or phenyl,X is C.sub.2 -C.sub.30 -alkylene which can be interrupted by non-adjacent oxygens, or is C.sub.4 -C.sub.12 -alkenylene or C.sub.4 -C.sub.12 -alkynylene where the unsaturated bonds are not adjacent to the ester oxygens, or is C.sub.5 -C.sub.8 -cycloalkylene or phenylene, andY is O or NH.

Abstract: N-(.beta.-carbonyl- and .beta.-cyanovinyl)-2,2,6,6-tetramethylpiperidine derivatives of the formula I ##STR1## where R.sup.1 is COOR.sup.3, COR.sup.4, CONR.sup.4 R.sup.5 or CN,R.sup.2 has the meanings of R.sup.1 or is C.sub.1 -C.sub.12 -alkyl or hydrogen,R.sup.3 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.3 -C.sub.5 -alkenyl or phenyl which can be mono- to trisubstituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkoxycarbonyl, halogen, hydroxyl, phenoxy, phenyl, tolyl or xylyl,R.sup.4 and R.sup.5 are each hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl or phenyl which can be mono- to trisubstituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkoxycarbonyl, halogen, hydroxyl, phenoxy, phenyl, tolyl or xylyl,n is 1-4,X and A for each individual n have been defined in the specification.

Abstract: A process for preparing polyaryl ethers of the formula I or Ia ##STR1## by condensation of at least one appropriate bisphenol with at least one appropriate aromatic dichloride in the presence of an alkali metal carbonate in a dipolar aprotic solvent, is carried out in the presence of a catalyst selected from the alkali metal nitrites and the group of compounds of the formula II ##STR2## where r.sup.1 and r.sup.3 are each hydrogen, C.sub.7 -C.sub.16 -phenylalkyl, C.sub.1 -C.sub.12 -alkoxy, fluorine, chlorine, bromine, iodine or nitro, and R.sup.2 is nitro or nitroso, or ##STR3## where R.sup.4 is hydrogen, C.sub.1 -C.sub.4 alkyl, fluorine, chlorine, bromine or iodine.

Abstract: The use of an aminovinyl-substituted heterocyclic compound of the general formula I ##STR1## in which R.sup.1 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, or halogen, and, if more than one radical R.sup.1 are present, these may be the same or different,R.sup.2 denotes cyano or C.sub.1 -C.sub.20 -alkoxycarbonyl or C.sub.3 -C.sub.6 -cycloalkoxycarbonyl,R.sup.3 denotes hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.1 -C.sub.18 -alkoxy, halogen, cyano, C.sub.1 -C.sub.20 -alkoxycarbonyl, or C.sub.3 -C.sub.6 -cycloalkoxycarbonyl, and, if more than one radical R.sup.3 are present, these may be the same or different,X denotes NH, O or S,m is equal to 1 or 2, andn is an integer from 1 to 5,as a stabilizer for organic materials.

Abstract: A process for the preparation of aromatic carbonyl or sulfonyl compounds with a diaryl ether structure by reacting phenols with halogenated carbonyl- or sulfonylaromatic compounds in a dipolar aprotic solvent is carried out in the presence of catalytic amounts of alkali metal nitrite or an aromatic nitro, nitroso, azo, azoxy or hydrazo compound.

Abstract: A polyalkylpiperidine derivative of formula I ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.8 -alkyl, phenyl- or tolylalkyl with 1 to 4 carbon atoms in the alkyl, C.sub.1 -C.sub.6 -acyl, benzoyl, allyl, cyanomethyl, hydroxyethyl, aminoethyl, hydroxyl or oxyl free radical,R.sup.2 is a radical of the formula: ##STR2## R.sub.3 is hydrogen, C.sub.1 -C.sub.22 -alkyl, C.sub.3 -C.sub.22 -alkenyl, C.sub.7 -C.sub.22 -phenyl- and diphenylalkyl, where the phenyl can be unsubstituted or substituted one to three times by C.sub.1 -C.sub.12 -alkyl, C.sub.1 --C.sub.12 -alkoxy, fluorine, chlorine, bromine, C.sub.3 -C.sub.12 -alkylamino or C.sub.1 -C.sub.12 -dialkylamino, or is C.sub.3 -C.sub.12 -cycloalkyl or bicycloalkyl, C.sub.4 -C.sub.22 -alkyl which is interrupted by oxygen or nitrogen atoms and which can additionally carry hydroxyl groups, phenyl which can be substituted by one to three methyl or carbo-C.sub.1 -C.sub.12 -alkoxy groups, or is C.sub.1 -C.sub.

Abstract: Polyalkylpiperidine derivatives of the formula I ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.8 -alkyl, phenyl- or tolylalkyl with 1 to 4 carbon atoms in the alkyl, C.sub.1 -C.sub.6 -acyl, benzoyl, allyl, cyanomethyl, hydroxyethyl, aminoethyl, hydroxyl or oxyl free radical,R.sup.2 is a radical of the formula ##STR2## R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are as defined in the specification. Included are tautomers and acid addition salts of the compound I. The compounds are used as UV absorbers and stabilizers for organic material.

Abstract: Cyclic amides of the general formula I ##STR1## where A is a group of the formula ##STR2## where in each case the left-hand free bond is linked to the amide nitrogen and the right-hand free bond, depending on the group, is a single or double bond, and where R.sup.7 to R.sup.12 are hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl, and R.sup.13 is one of the radicals R.sup.7 to R.sup.12 or hydroxyl,R.sup.1 to R.sup.4 are C.sub.1 -C.sub.4 -alkyl, where R.sup.1 and R.sup.2 and/or R.sup.3 and R.sup.4 may in each case be linked to form a 5- or 6-membered ring,R.sup.5 is hydrogen or C.sub.1 -C.sub.3 -alkyl, andR.sup.6 is hydrogen, C.sub.1 -C.sub.4 -alkyl which may additionally be substituted by cyano, hydroxyl, amino or phenyl, or is C.sub.1 -C.sub.4 -acyl.are described and are used as stabilizers for organic materials.