WO1980001566A1 - Benzofuran-2-onic or indolin-2-onic compounds as stabilizers of polymers - Google Patents

Benzofuran-2-onic or indolin-2-onic compounds as stabilizers of polymers Download PDF

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Publication number
WO1980001566A1
WO1980001566A1 PCT/CH1980/000017 CH8000017W WO8001566A1 WO 1980001566 A1 WO1980001566 A1 WO 1980001566A1 CH 8000017 W CH8000017 W CH 8000017W WO 8001566 A1 WO8001566 A1 WO 8001566A1
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alkyl
compounds
hydrogen
optionally substituted
compound
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PCT/CH1980/000017
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German (de)
English (en)
French (fr)
Inventor
Horst Mayerhoefer
H Schneider
H Hinsken
Wolfgang Mueller
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Sandoz Ag
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Priority to BR8006453A priority Critical patent/BR8006453A/pt
Publication of WO1980001566A1 publication Critical patent/WO1980001566A1/de

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
    • C07D307/82—Benzo [b] furans; Hydrogenated benzo [b] furans with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
    • C07D307/83—Oxygen atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/15—Heterocyclic compounds having oxygen in the ring
    • C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
    • C08K5/1535—Five-membered rings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
    • C08K5/3415—Five-membered rings
    • C08K5/3417—Five-membered rings condensed with carbocyclic rings

Definitions

  • the present invention relates to the use of optionally substituted benzofuranone (2) compounds and / or optionally substituted
  • Indolinone (2) compounds as stabilizers in polymeric organic materials are examples of Indolinone (2) compounds as stabilizers in polymeric organic materials.
  • the invention relates to the use of benzofuranone (2) compounds and / or indolinone (2) compounds which, in the 3-position, have either at least one hydrogen atom or an organic radical bonded via a double bond, and / or optionally s-substituted bis-3 -Benzofuranone (2) compounds and / or optionally substituted bis-3-indolinone (2) compounds as stabilizers for polymeric organic materials, where (i) in the 3-position unsubstituted benzofuran-2 (3H) on compounds in 5- Position no through tert.
  • the invention relates to the use as stabilizers of compounds of the formula
  • R and R 1 together form an organic radical R 1 bonded via a double bond, hydrogen, optionally substituted alkyl (C 1-22 ), cycloalkyl
  • X is oxygen, or a nitrogen substituted by hydrogen, alkyl (C 1-18 ), cycloalkyl, benzyl, (C 5.6 ) , alkyl (C 1-5 ) cycloalkyl (C 5.6 ), or optionally substituted phenyl, where the molecule has at most one directly bonded benzofuranone (2) or indolinone (2) residue, and when neither R 1 nor R 3 alone nor R 1 together with R has a directly bonded residue of a benzofuranone (2) or indolinone ( 2) - Form connection: one of the substituents R 1 , R 2 , R 3 , R 4 or R 5 or R 1 together with R can also form a suitable bridge member which contains further residues of a benzofuranone (2) - and / or indolinone ( 2) - Compound, which in the 3-position have at least one hydrogen atom or an organic residue bonded via a coupling bond, can be carried, whereby furthermore the 3-position-unsubstituted be
  • R * is hydrogen or
  • phenyl radical independently of one another hydrogen, alkyl (C 1-12 ), at most two of the substituents R 3 , R 4 , R 5 cycloalkyl (C 5.6 ), alkyl (C 1-5 ) cycloalkyl (C 5.6 ), hydroxyl, alk ⁇ xy (C 1-22 ), alkyl (C 1- 18 ) - Caib ⁇ iyloxy, phenylcarbonyloxy or chlorine or one of these substituents optionally substituted by 1 or 2 alkyl (C 1-12 ) with together up to 16 C atoms phenoxy, phenylalkyl (C 1-9 ), the phenyl nucleus of which is alkyl (C 1 -11) , hydroxyl, alkyl (C 1-18 ) carbonyloxy, and / or phenylcarbonyloxy may be substituted, alkoxy (C 1-22 ) carbonyl, phenoxycarbonyl, COCH,
  • R 6a is hydrogen, alkyl (C 1-18 ), cycloalkyl (C 5.6 ), alkyl (C 1-5 cycloalkyl (C 5.6 ), phenyl or benzyl, or
  • R 6 and R 6a together with the common carbon atom form a 5- or 6-membered aliphatic ring which is optionally substituted by an alkyl (C 1-4 ) group,
  • R 7 is hydrogen, alkyl (C 1-18 ), which is optionally interrupted by oxygen or sulfur, dialkyl (C 1-4 ) aminoalkyl (C 1-8 ), cycloalkyl (C 5.6 ), optionally by 1 to 3 alkyl (C 1-12 ) with a maximum of 18 C-substituted phenyl,
  • R 8 independently of one another hydrogen, alkyl (C 1-18 ), cycloalkyl (C 5.6 ), alkyl (C 1-5 ) cycloalkyl (C 5.6 ), optionally with 1 or 2 alkyl (C 1-12 ) with together at most 16 carbon atoms substituted phenyl or
  • R 9 has one of the meanings of R 8 with the exception of the radical (d / 4), R 9a is hydrogen.
  • R 10 is hydrogen, alkyl (C 1-18 ), cycloalkyl (C 5.6 ), alkyl (C 1-5 ) cycloalkyl (C 5.6 ) or optionally substituted by 1 or 2 alkyl (C 1-12 ) residues with a maximum of 16 C atoms, phenyl, benzyl, R 11 hydrogen, alkyl (C 1-22 ), Cycloalkyl ( 5-12 ), phenylalkyl (C 1-6 ), optionally substituted by 1 or 2 alkyl (C 1-12 ) residues with a maximum of 16 C-atoms substituted phenyl, R 12 alkyl (C 1-18 ), 2-Hydroxyethyl, phenyl or alky
  • E 3 is to be used.
  • R 13 independently of one another is hydrogen, alkyl (C 1-16 ) with a maximum of 16 carbon atoms, phenyl or a radical (a / 4) or (a / 3) and
  • R 14 is hydrogen or methyl
  • A is a 2-6-valent saturated, optionally interrupted by sulfur, oxygen or nitrogen atoms, alifatic, aralifatic or cycloalifatic hydrocarbon radical with 1-22 C atoms, or a 2- or 3-valent radical of the benzene, or for the rest (e / 1) or (e / 9) too
  • Indolinone (2) nucleus in compounds which have 2 benzofuranone (2) or indolinone (2) nuclei bonded directly to one another (residues (a / 1), (a / 3), (a / 7) and the directly bound radical E 3 and (iii) compounds which have two or more benzofuranone (2) or indolinone (2) nuclei bonded via a bridging element (residues (e / 1) to (e / 15)).
  • R preferably denotes R 'or together with a radical (a / 2) preferably R', preferably water material.
  • R 'in (a / 7) is preferably hydrogen.
  • R 1 is preferably or together with R 'is a radical (a / 2), preferably preferably ie hydrogen, alkyl (C 1-18 ), phenyl optionally substituted by 1 or 2 alkyl (C 1-8 ) and / or hydroxyl, or one of the radicals (a / 4), (a / 5) or together with R ' (a / 2), preferably ie alkyl (C 1-18 ) or ge optionally substituted by 1 or 2 alkyl (C 1-8 ) and / or hydroxyl phenyl, preferably ie optionally by 1 alkyl ( 1-4 ) substi tuated phenyl, preferably phenyl.
  • R 1 as substituted phenyl is preferably free of chlorine.
  • R 1 is a phenyl radical. dyrch one pp substituted, it is preferably in the 2- or 4-position, preferably in the 2-position.
  • An alkyl group (C 1-4 ) is also preferably at the same time, preferably in the para position to present.
  • R 1a is preferably free of chlorine.
  • R 1a preferably denotes phenyl optionally substituted by 1 or 2 alkyl (C 1-8 ) and / or hydroxyl, preferably phenyl optionally substituted by 1 alkyl (C 1-4 ), preferably phenyl, R 1 denotes optionally substituted phenyl or R is a radical (a / 1),
  • R 2 is preferably hydrogen or methyl, preferably hydrogen.
  • R 2 is preferably and preferably wise, ie hydrogen, alkyl (C 1-4 ) or together with R 3 a fused-on remainder of the benzene, preferably ie hydrogen or methyl, preferably hydrogen.
  • R 3 preferably and preferably means hydrogen, alkyl (C 1-12 ), phenyl, alkoxy (C 1-18 ), phenoxy, alkyl (C 1-18 ) carbonyloxy, a residue
  • R 4 a residue (ba / 1), or together with R "an annexed residue of the benzene, preferably ie hydrogen, alkyl (C 1-12 ), phenyl, or a radical (a / 4) or, together with R 2, an annexed radical of the benzene, preferably ie hydrogen, alkyl (C 1-9 ) or (a / 4), preferably ie hydrogen or alkyl (C 1-9 ), preferably hydrogen or alkyl (C 1-5 ), preferably hydrogen, ffethyl, tert-butyl or tert-amyl, preferably tert. Butyl. If R 2 and R 3 together represent a fused-on benzene radical, the substituents R 4 and R 5 preferably denote hydrogen or one of the two alkyl
  • R 3 together with R 4 represents a radical (b / 1), its bridging oxygen atom is preferably bonded in the 6-position.
  • R 4 preferably means or one of the meanings of and (together standards) or from and (taken together), preferably% ie water substance, alkyl (C 1-12 ), alkoxy (C 1-18 ), phenoxy, preferably ie water substance or alkyl (C 1-12 ), preferably hydrogen.
  • R 4 as alkyl preferably has 1-8, preferably 1-4 C atoms and is preferably methyl or tert-butyl. If R 4 and R 5 form a residue (b / 1), its bridge oxygen is preferably in the 7 position.
  • R 5 preferably means preferably ie hydrogen, alkyl (C 1-12 ), Phenyl, or a radical (a / 4), (a / 5), (g / 1), (g / 2), or together with Tetra ⁇ ethylen, preferably ie hydrogen or alkyl (C 1-8 ), preferred wise ie alkyl (C 1-8 ), preferably ie alkyl (C 1-5 ), preferably Methyl, tert-butyl, tert-amyl, preferably tert-butyl.
  • none of the substituents R 2 , R 3 , R 4 or R 5 is hydroxyl.
  • the compound is preferably free of nitro groups.
  • R 3 or R 5 preferably R 5, may preferably be used.
  • the other substituents R 2 , R 4 are then preferably hydrogen and R 3 or R 5 are hydrogen or methyl.
  • Such substituents of the formula are preferred
  • R 15 independently of one another are hydrogen, linear or branched alkyl (C 1-9 ),
  • R 16 hydrogen, linear alkyl (C 1-4 )
  • R 17 is independently hydrogen or alkyl (C 1-4 ).
  • R 18 is hydrogen or or
  • X is preferably X ', ie oxygen, -NH-, -N (alkyl [C 1-12 ]) -, or -N (C 6 H 5 ) -, preferably oxygen, -N (alkyl [C 1-4 ] ) - or -N (C 6 H 5 ) -; preferably oxygen or -N (C 6 H 5 ) -, preferably oxygen.
  • R 1 is preferably optionally substituted phenyl.
  • R 1 is preferably different from (a / 5).
  • R 6 as optionally substituted phenyl is preferably phenyl, hydroxyphenyl or 3,5-di-tert-butyl-4-hydroxyphenyl which is optionally substituted by 1 or 2 alkyl (C 1-12 ) radicals with a maximum of 16 C atoms, preferably optionally by 1 Alkyl (C 1-12 ) substituted phenyl or 3,5-di-tert-butyl-4-hydroxyphenyl, preferably phenyl.
  • R 6 preferably means alkyl (C 1-18 ), phenyl, 3,5-di-tert-butyl 4-hydroxyphenyl or a radical (c / 1) or together with R 6a cyclohexylidene, ie preferably alkyl (C 1-12 ), phenyl or together with R 6a cyclohexylidene, preferably ie alkyl (C 1-12 ) or phenyl.
  • R 6 has as alkyl preferably 1-12, preferably 1-8, preferably 1-4 C atoms.
  • R 6a preferably means hydrogen, alkyl (C 1-12 ) or together with cyclohexylidene, preferably hydrogen.
  • R 6a as alkyl preferably has 1-8, preferably 1-4 C atoms and is preferably methyl.
  • R 6 is a substituted phenyl radical or -CH (C 6 -H 5 ) 2 or (c / 1)
  • R 6a is preferably hydrogen.
  • R 7 preferably means hydrogen, alkyl (C 1-18 ), if appropriate phenyl substituted by 1 or 2 alkyl (C 1-12 ) with a maximum of 16 carbon atoms, preferably P ie alkyl (C 1-18 ) or optionally by 1 alkyl (C 1-12 ) substituted phenyl, preferably alkyl (C 1-18 ), preferably alkyl (C 8-18 ).
  • R 8 independently of one another preferably denotes hydrogen, alkyl (C 1-18 ), or both R 8 together with the common N atom form a radical (d / 4), preferably hydrogen or alkyl (C 1-4 ).
  • R 9 preferably denotes hydrogen, alkyl (C 1-18 ), or - CH 2 CH 2 CH, preferably hydrogen or alkyl (C 1-18 ), preferably alkyl (C 1-8 ), preferably with 1-4 C-At ⁇ ren .
  • R 9a preferably denotes hydrogen, alkyl (C 1-8 ) or - CH 2 CH 2 OH.
  • R 9a as alkyl preferably has 1-8 preferably 1-4 C atoms.
  • R 10 (bound to X) preferably means ie hydrogen, alkyl (C 1-12 ) or phenyl, preferably ie alkyl (C 1-4 ) or phenyl, preferably phenyl.
  • R 10 as alkyl preferably has 1-4 C atoms. If R 10 is phenyl, R 1 is also preferably phenyl.
  • R 10 (bound to A as NR 10 ) preferably denotes hydrogen or alkyl (C 1-4 ).
  • R 11 is preferably hydrogen, alkyl (C 1-22 ) if phenyl substituted by 1 or 2 alkyl (C 1-12 ) with a maximum of 16 C atoms, preferably ie alkyl (C 1-18 ) or phenyl.
  • R 11 is preferably phenyl.
  • R 11 as alkyl preferably has 1-17 carbon atoms. If a residue (b / 2) is present, it is preferably in the 5-position, which, if R 11 is different from hydrogen, is preferably in the adjacent hydroxyl group in the 6-position.
  • R 12 is preferably alkyl (C 1-12 ), phenyl or 4-alkyl (C 1-9 ) phenyl.
  • n is preferably 1 or 2, preferably 2.
  • n in (a / 4) or (a / 5) for R 1 is preferably 1 and for R 3 is preferably 2.
  • R 14 is preferably hydrogen.
  • Cycloalkyl or alkylcycloalkyl preferably each mean cyclohexyl or methylcyclohexyl, preferably cyclohexyl.
  • a as a divalent radical preferably means
  • OMPI preferably (f / 1), (f / 3) and (f / 4).
  • Rest (f / 1) is straight or branched.
  • q represents 2-10, preferably 2-6 or 10; preferably alkyl (C 1-3 ) or phenyl
  • a as a trivalent radical preferably means
  • a as a tetravalent radical preferably means
  • a as a 6-valent radical preferably means
  • R 10 in the radicals (e / 2) and (e / 3) is preferably hydrogen or
  • m is preferably 2-6, preferably 2-5, preferably 2-4.
  • s is preferably zero or 1-12, preferably zero or 1 to
  • p is preferably 2 or 3, preferably 3.
  • D is preferably the direct bond, oxygen or
  • R 13 independently of one another preferably means hydrogen, Alkyl (C 1-4 ) or one of the two R 13 is a radical (a / 4), in which R 7 is a monovalent radical, preferably hydrogen or alkyl (C 1-4 ), preferably methyl.
  • R 7 is a monovalent radical, preferably hydrogen or alkyl (C 1-4 ), preferably methyl.
  • R 7 is a monovalent radical, preferably hydrogen or alkyl (C 1-4 ), preferably methyl.
  • R 7 is a monovalent radical, preferably hydrogen or alkyl (C 1-4 ), preferably methyl.
  • R 7 is a monovalent radical, preferably hydrogen or alkyl (C 1-4 ), preferably methyl.
  • those compounds are preferred which have the radicals E 1 , E 3 or E 5 , preferably the radicals E 1 or E 3 , preferably the radicals E 3
  • R is a radical (a / 1) or R 3 is a radical E 3 , preferably those in which R 1 is optionally substituted phenyl.
  • the compounds which have a radical (e / 1), (e / 6) are preferred, preferably (e / 1), preferably in the 5-position.
  • R 1 optionally substituted phenyl, or R 5 is one of the radicals (e / 1), (e / 2), (e / 3),
  • Alkyl esters or for (e / 7) and (e / 8) the acid chlorides are Alkyl esters or for (e / 7) and (e / 8) the acid chlorides.
  • R 2 , R 3 , R 4 , R 5 , D and Z have the above meaning, with 2 moles of one
  • a process for the preparation of compounds of the formula (I) in which R and R 1 are hydrogen is characterized in that a compound of the formula
  • R 3a and R 5a have the same meanings of R 3 and R 5 , with the exception that no residue (a / 5) is present and in a possibly present residue (a / 4) R 4 is only hydrogen, and G is secondary Amine residue or halogen means, heated with at least the equivalent amount of cyanide ions and the product obtained hydrolyzed in the presence of water in a manner known per se and condensed with the phenolic hydroxyl group with elimination of water, and then, if R 7 in the end product is different from hydrogen or the Rest (a / 5) to be achieved, esterified with the corresponding alcohol or amidated with the corresponding amine.
  • G as a secondary amino radical is preferably -N [alkyl (C 1-4 )] 2 , preferably
  • G as halogen is preferably chlorine or bromine, preferably chlorine.
  • the present invention also relates to polymeric organic materials which have a benzofuranone (2) compound and / or indolinone (2) compound which in the 3-position either have at least one hydrogen atom or an organic radical bonded via a double bond and / or optionally substituted bis- 3-benzofuranone (2) compounds and / or optionally substituted bis-3-indolinone (2) compounds, wcfoei in the 3-position unsubstituted benzofuran-2 (3H) ⁇ nharmen in the 5-position none by tert.
  • the invention also relates to a method for stabilizing polymeric organic materials against thermooxidative, photooxidative and the degradation occurring due to mechanical stress during the processing of polymeric screenings, characterized in that a benzofuranone (2) compound and / or indolinone (2 ) compound which in the 3-position either have at least one hydrogen breath or an organic radical bonded via a double bond and / or an optionally substituted bis-3-benzofuranone (2) compound and / or an optionally substituted bis-3-indolinone (2) compound, weave in the 3-position substituted benzofuran-2 (3H) on-compounds in the 5-position none by tert.
  • a benzofuranone (2) compound and / or indolinone (2 ) compound which in the 3-position either have at least one hydrogen breath or an organic radical bonded via a double bond and / or an optionally substituted bis-3-benzofuranone (2) compound and / or an optionally substituted bis-3-indolinone (2) compound, weave in the 3-position substituted benzofuran-2 (3
  • the amount of protective agent to be introduced can vary within wide limits, for example between 0.01 and 5%, preferably between 0.02 and 1%, based on the material to be protected.
  • a method for stabilizing the polymeric organic materials just mentioned is particularly preferred, in which additional additives for improving the properties of the polymeric organic materials are added to the benzofuranone (2) compounds and / or indolinone (2) compounds according to the invention.
  • additional additives for improving the properties of the polymeric organic materials are added to the benzofuranone (2) compounds and / or indolinone (2) compounds according to the invention.
  • These other aids can either be sterically hindered antioxidants Be phenols, or sulfur- or phosphorus-containing costabilizers or a mixture of suitable sterically hindered phenols and sulfur and / or phosphorus-containing compounds.
  • polystyrene especially polyethylene and polypropylene, ethylene / propylene copolymers, polybutylene, as well as polystyrene, chlorinated polyethylene, and also polyvinyl chloride
  • polyester, polycarbonate, polymethyl methacrylates, polyphenylene oxides, polyamides such as nylon, polyurethanes, polyprylene oxide, phenol-formaldehyde resins and corresponding polyacrylamide resins, epoxydihyde resins Copolymsrisate and ABS terpolymers are particularly numerous.
  • polyolefins especially polyethylene and polypropylene, ethylene / propylene copolymers, polybutylene, as well as polystyrene, chlorinated polyethylene, and also polyvinyl chloride
  • Polyethylene including high molecular weight polyethylene, ethylene / propylene copolymers, polyvinyl chloride, polyester, polyamide, polyurethanes, polyacrylonitrile, ABS terpolymers, terpolymers of acrylic esters, styrene and acrylonitrile, copolymers of styrene and acrylonitrile or styrene and butadiene, preferably for polypropylene / polyethylene Propylene copolymer or ABS.
  • Natural substances can also be stabilized, such as rubber and also lubricating oils.
  • the materials to be protected are incorporated or coated using methods known per se.
  • a particularly important application method is the intimate mixing of a plastic with the new compounds in the melt, e.g. in a kneader or by extrusion, injection molding, blow molding, spinning to corresponding articles.
  • Polypropylene or polyethylene in granular, semolina or powder form is preferably used.
  • Blow molds are obtained, for example, from foils, films, hoses, tubes, containers, bottles, profile parts, threads or tapes. You can also coat metal wires with the polymer melt using a suitable extruder. Also in the reprocessing of waste polymers (recycling) additives of the stressed compounds improve the quality of the polymer material thus recovered.
  • the plastics do not necessarily have to be completely polymerized or condensed before they are mixed with the antioxidants according to the invention. Mcnomers or prepolymers or precondensates can also be mixed with the stabilizers according to the invention and only afterwards with or after condensing or polymerizing, convert the plastic to its final shape.
  • co-stabilizers are sulfur-containing compounds, e.g.
  • distearylthiodipropionate distearylthiodipropionate, dilaurylthiodipropionate, tetrakis ( methylene-3-hexyl-thiopropionate) methane, tetrakis (methylene-3-dodecyl-thiopropionate) methane and dioctadecyl disulfide or phosphorus-containing compounds such as TrincnyIphenyIphosphit; 4,9-distearyl-3,5,8,10-tetraoxadiphosphaspiroundecan, tri s- (2,4-Ditert.-butylphenyl) phosphite or tetrakis (2,4-ditert.-butylphenyl) -4,4 'biphenylylene diphosponate.
  • TrincnyIphenyIphosphit 4,9-distearyl-3,5,8,10-tetra
  • the ratio of the benzofuranone (2) or indolinone (2) compounds to the further added stabilizers or stabilizer mixtures is, for example, 1:15 to 5: 1, preferably 1: 6 to 3: 1 and, if only phenolic stabilizers are present, preferably 1: 3 to 1: 1.
  • the benzofuranone (2) and / or indolinone (2) compounds according to the invention, and their mixtures mentioned above, can also be used in the presence of further additives.
  • further additives Such are known per se and described, for example, in DOS 2606 358.
  • the claimed compounds can also be combined with metal deactivators, for example N, N'-dibenzoylhydrazide, N-benzoyl-N'-salicylcylhydrazide, N, N'-distearylhydrazide, N, N; -Bis- [3- (3.5 ditert.
  • the invention also relates to antioxidant agents for stabilizing polymers, characterized in that they have a benzofuranin (2) compound and / or indoline (2) compound which in the 3-position either have at least one hydrogen breath or an organic radical bonded via a double bond and / or an optionally substituted bis-3-benzofuranone (2) compound and / or an optionally substituted bis-3-indolinone (2) compound.
  • Such means are e.g. known as masterbatches and contain, for example, 5-90%, preferably 20-60%, preferably 20-30% of the benzofuranone (2) and / or indolinone (2) compounds in a polymeric organic material.
  • the benzofuranone (2) and / or indolinone (2) compounds according to the invention can also be melted together with suitable, sterically hindered phenols and / or light stabilizers and / or metal deactivators and ground after the melt has cooled.
  • An additive mixture produced in this way has the great advantage over a physical mixture of different additive powders that segregation of the individual components is no longer possible due to different grain size, density, adsorptive forces, static charge and other conceivable physical properties.
  • the concentration of added additive mixture can be determined by simply measuring the fluorescence intensity, since the relative fluorescence intensity over a relatively wide concentration range of the optical brightener is linearly related to the concentration of the additive mixture which is incorporated into a polymer.
  • the use of additive mixtures produced via the melt brings not only the advantage of additive homogeneity, but also an effective and rapid production control in the Stabilization of plastics, since this simple measurement of the fluorescence intensity can be carried out, for example, directly on the product extruder.
  • the invention therefore also relates to the use of a ground melt of the compounds according to the invention together with suitable phenolic antioxidants and, if appropriate, suitable light stabilizers, metal deactivators, nucleating agents and lubricants as well as an optical brightener for optimal distribution of the additive components in the polymer and for simple determination of the additive content by measuring the intensity of the Fluorescence radiation, which is caused by the optical brightener present as a result of UV radiation, and the ground melt itself.
  • phenol, p-cresol, m-tert-butylphenol, p-tert-butylphenol, 3,5-dimethylphenol, 2,4-di-tert are used .
  • Compound No. 17 is also obtained by esterifying compound No. 16 with stearic acid chloride; the compound No. 21 by esterification of the compound No. 20 with stearyl alcohol in a manner known per se.
  • a mixture of 1200 parts of a commercially available unstabilized polypropylene (Profax 6501), 0.6 parts of calcium stearate, 0.6 parts of tetrakis [methylene-3 (3'5'-di-tert-butyl-4'-hydroxyphenyl) propionate] - Methane and 0.6 parts of compound no. 4 according to Table 1 are mixed vigorously in a shaker for 10 minutes and in an extruder with a temperature profile of 150-240-260-200 ° in the individual heating zones and 120 rpm. extruded into a strand that is granulated after passing through a water bath.
  • the granules obtained are extruded and granulated a further 9 times, a portion being removed in each case for determining the melt flow index (MET according to ASTM D 1238 L, 230 °; 2.16 kp), which is a measure of the thermomechanical oxidative degradation of the polymer serves.
  • the melt flow index MET according to ASTM D 1238 L, 230 °; 2.16 kp
  • a mixture is extruded, which contains no benzofuranone compound.
  • ABS powder (Marbon AOE 301075) are dissolved in 2200 parts of chloroform and this solution is added dropwise to 8000 parts of methanol, the ABS failing. After filtration, this is freed from the stabilizer system ABS freed of the solvent mixture in vacuo overnight at room temperature.
  • test specimens produced from these films are stored in a convection oven at 95 °.
  • Plastic bag mixed by repeated shaking 43 parts of this powder mixture are heated in a Brabender Plasti-Corder PLV 151 at 50 rpm to 220 ° C and the course of the torque is registered until a significant drop.
  • the polymer is better stabilized by the added mixed mixture than in a comparative experiment in which double the amount of a 1: 1 mixture of tetrakis [methylene-3- (3 ', 5 , -di-tert.-but ⁇ l-4'-hydroxyphenyl ) propionate] methane. and 2.6 di-tert-butyl-4-methylphenol was added.
  • the relative fluorescence intensity can be determined by means of the incorporated optical brightener using a fluorescence spectrophotometer. This fluorescence intensity is linear in the concentration range from 0.01 to 1 ppm brightener in the polymer to the concentration of the melt mixture.
  • the content of additive in the polymer granules can be determined by simply measuring the fluorescence intensity.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
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PCT/CH1980/000017 1979-02-05 1980-02-05 Benzofuran-2-onic or indolin-2-onic compounds as stabilizers of polymers WO1980001566A1 (en)

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BR8006453A BR8006453A (pt) 1979-02-05 1980-02-05 Aplicacao de compostos organicos

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CH110479 1979-02-05
CH1104/79 1979-02-05
CH879379 1979-09-28

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FR2464278A1 (fr) 1981-03-06
NO802930L (no) 1980-10-03
GB2044272B (en) 1983-03-16
US4611016A (en) 1986-09-09
FR2460943A1 (fr) 1981-01-30
GB2044272A (en) 1980-10-15
ES8101628A1 (es) 1980-12-16
US4325863A (en) 1982-04-20
CA1150257A (en) 1983-07-19
IT1188889B (it) 1988-01-28
JPS55501181A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1980-12-25
BR8006453A (pt) 1980-12-30
FR2460943B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1983-11-25
CH645908A5 (de) 1984-10-31
FR2464278B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1983-11-18
SE8006932L (sv) 1980-10-03
FR2449106B1 (fr) 1986-09-05
FR2464261B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1984-02-10
GB2042562B (en) 1983-05-11
FR2464261A1 (fr) 1981-03-06
DE3030673D2 (en) 1981-02-26
US4338244A (en) 1982-07-06
SE443570B (sv) 1986-03-03
CA1134094A (en) 1982-10-19
IT8047806A1 (it) 1981-08-05
IT8047806A0 (it) 1980-02-05
JPS6326771B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-05-31
FR2449106A1 (fr) 1980-09-12
NL8020018A (nl) 1980-11-28
GB2042562A (en) 1980-09-24
ES488290A0 (es) 1980-12-16

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