WO1997042171A1 - Neue sterisch gehinderte piperidinderivate als lichtschutzmittel für polymere - Google Patents
Neue sterisch gehinderte piperidinderivate als lichtschutzmittel für polymere Download PDFInfo
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- WO1997042171A1 WO1997042171A1 PCT/EP1997/002212 EP9702212W WO9742171A1 WO 1997042171 A1 WO1997042171 A1 WO 1997042171A1 EP 9702212 W EP9702212 W EP 9702212W WO 9742171 A1 WO9742171 A1 WO 9742171A1
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- formula
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/36—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members 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 ring carbon atoms
- C07D211/40—Oxygen atoms
- C07D211/44—Oxygen atoms attached in position 4
- C07D211/46—Oxygen atoms attached in position 4 having a hydrogen atom as the second substituent in position 4
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
- C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
- C07D211/36—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members 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 ring carbon atoms
- C07D211/56—Nitrogen atoms
- C07D211/58—Nitrogen atoms attached in position 4
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
- C07D417/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing three or more hetero 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
- C08K5/3432—Six-membered rings
- C08K5/3435—Piperidines
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K15/00—Anti-oxidant compositions; Compositions inhibiting chemical change
- C09K15/04—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds
- C09K15/30—Anti-oxidant compositions; Compositions inhibiting chemical change containing organic compounds containing heterocyclic ring with at least one nitrogen atom as ring member
Definitions
- the stabilization of polymeric material against the destructive influence of high-energy radiation is the subject of intensive research.
- the light stabilizers based on the basic body 2,2,6,6-tetramethylpiperidine are of particular importance, as can be seen from numerous patent applications on this subject.
- the low molecular weight stabilizers of this class of substances have the considerable disadvantage of easy extractability and high volatility from polymeric material, so that considerable losses of stabilizer occur in long-term use.
- HALS derivatives that are firmly attached to the polymer are significantly less effective in their light protection than molecular stabilizers that can move freely in the polymer (cf.Chmela, P. Hrdlovic, Polymer Degradation and Stability 1 1 (1985), 339-348), see above that UV radiation is its harmful polymer-degrading effect can develop much faster.
- photoreactive compounds based on ⁇ , ⁇ '-dicyano-p-benzenediacrylic acid derivatives are known, but not in connection with light stabilizers.
- the invention thus relates to compounds of the formula (I)
- n 0 or 1
- a for m 1 one or more times by hydrogen, C 1 -C 4 -alkyl, preferably C 1 -C 2 -alkyl, in particular methyl, trifluoromethyl, C 1 -C 4 -alkoxy, preferably C 1 -C 2 alkoxy, especially methoxy, halogen, cyano, carboxy, nitro, amino, C j -C ⁇ alkylamino, preferably C 1 -C 2 alkylamino, especially methylamine C ⁇ C ⁇ dialkylamino, preferably C 1 -C 2 - Dialkylamino, in particular dimethylamino, acyl or acyloxy, substituted aromatic radical having 6 to 20 carbon atoms in the ring ring means, wherein as heteroaromatics for example pyridine, furan, thiophene, pyrimidine, pyrrole, imidazole, pyrazole, preferably pyridine, thiophene and furan and in particular furan
- radicals are additionally added one or more times by hydrogen, C ] -C 4 -alkyl, preferably C 1 -C 2 -alkyl, in particular methyl, trifluoromethyl, CC ⁇ alkoxy, in particular methoxy, halogen, cyano, carboxy, nitro, amino C 1 -C 2 -alkylamino, preferably C 1 -C 2 -alkylamino, in particular methylamino, C -, - C 4 -dialkylamino, preferably C 1 -C 2 -dialkylamino, in particular dimethylamino, acyl or acyloxy,
- C, -C 4 alkyl preferably C 1 -C 2 alkyl, in particular methyl, trifluoromethyl, C 1 -C 4 alkoxy, preferably C 1 -C 2 alkoxy, in particular Methoxy, halogen, cyan, carboxy, nitro, amino, C 1 -C 4 -alkylamino, preferably C 1 -C 2 -alkylamino, in particular methyiamino, C 1 -C 4 -dialkylamino, preferably C.
- - C 2 -dialkylamino in particular dimethylamino, acyl or acyloxy can be substituted, a hydrogen atom, a C 1 -C 20 alkyl group, preferably a C ⁇ Cg alkyl group, in particular a methyl group, an oxygen radical O ⁇ -OH, -NO, -CH 2 CN, benzyl , Allyl, a C-
- Alkyl group in particular a methyl group
- R 3 represents an oxygen atom, -NR 8 or -NY, where
- R 8 is a hydrogen atom, a C 1 -C 4 -alkyl group, preferably a C 1 -C 5 -alkyl group, in particular a methyl or butyl group, a C 5 -C 10 cycloalkyl group, preferably a C 5 -C 6 cycloalkyl group, in particular a cyclohexyl group or a C 6 -C 9 aryl group, preferably a C 6 -C 7 aryl group and
- Y is a residue of the formula
- R 9 is C r C 2 alkyl, preferably C r C 6 alkyl, in particular methyl and
- R 10 is one or more times by hydrogen, C -, - C 4 alkyl, preferably C 1 -C 2 alkyl, in particular methyl, trifluoromethyl, C, -C 4 - alkoxy, preferably C 1 -C 2 - Alkoxy, in particular methoxy, halogen, cyan, carboxy, nitro, amino, C., - C 4 -Alkyla ⁇ ino, preferably C
- R 10 is a hydrogen atom, a halogen atom, a C., - C. 4 -alkyl group, preferably a C 1 -C 2 -alkyl group, in particular a methyl group,
- R 7 is one or more substituents of the type hydrogen, C
- X is an oxygen atom or -NR 12 , preferably an oxygen atom, wherein
- R 1 2 has the meaning of R 8 or Y in the formula (I).
- R 1 is a hydrogen atom, C 1 -C 5 alkyl, C r C 10 alkyloxy, C 5 -C 6 cycloalkyloxy, C 3 -C 6 alkenyl, C 1 -C 6 acyl, unsubstituted or on the phenyl ring by C 1 Is -C 2 alkyl substituted C 7 -C 8 phenylalkyl,
- R is a hydrogen atom or a C 1 -C 4 alkyl group
- R 3 is an oxygen atom or -NR 8 ,
- R 6 denotes hydrogen, halogen, C r C 2 alkyl, cyano or nitro
- R 8 is a hydrogen atom, a C 5 -C 5 -alkyl group, a C 5 -C 6 cycloalkyl group or a C 6 -C 7 aryl group,
- R 9 is C r C 6 alkyl
- R 10 is substituted one or more times by hydrogen, C -, - C 2 alkyl, C 1 -C 2 alkoxy, C 1 -C 2 alkylamino, CpC ⁇ -dialkylamino, acyl or acyloxy represents aromatic radical with 5 to 14 carbon atoms in the ring structure, and wherein in the formula (III) R 7 one or more substituents of the type hydrogen, C r C 2 alkyl, C r C 2 alkoxy, amino, C, -C 2 -dialkylamino means.
- R 1 is a hydrogen atom or a methyl group
- R 2 is a methyl group
- R 3 is an oxygen atom or -NR 8 , where
- R 8 represents a hydrogen atom or a butyl group
- R 9 is a methyl group
- R 6 is hydrogen, a methyl group or a chlorine atom
- R 7 is hydrogen and X is an oxygen atom.
- the invention also relates to the general production process for compounds of the formula (I) and their use for stabilizing organic material, in particular plastics, oils and paints.
- the compounds of the formula (XXV) can be obtained by reactions of the compounds of the general formula (XXVII) and (XXVIII) which are known per se.
- Metal (IV) tetraalkyl alcoholates of the (IV) subgroup of the PSE are carried out in a high-boiling aprotic solvent, for example toluene, xylene or mesitylene, the low-boiling alcohol R'OH being successively removed from the reaction mixture by distillation.
- Typical condensation reactions are available for the condensation of (XXV) with (XXVI), as described, for example, in C. Ferri, Reactions of Organic Synthesis, Georg Thieme Verlag Stuttgart, 1978 or other conventional ones Textbooks are listed.
- a high-boiling organic solvent for example toluene, xylene or mesitylene
- the reaction temperature should be chosen between 20 ° C and the boiling point of the solvent.
- Suitable auxiliary bases are compounds known from the specialist literature, in particular, for example, pyridine, triethylamine, piperidine or morpholine; preference is given to using piperidine or pyridine.
- the water of reaction which separates is continuously withdrawn from the reaction mixture via a water separator. After the reaction has ended, the compounds of the formula (XXV) can be recrystallized from suitable solvents, such as, for example, alcohols, dimethylformamide or esters.
- Compounds of the formula (I) can be prepared preferably in a high-boiling, aprotic organic solvent, e.g. Toluene or xylene.
- aprotic organic solvent e.g. Toluene or xylene.
- the reaction temperature should be chosen between 20 ° C and the boiling point of the organic solvent.
- reaction conditions correspond to the conditions shown for the preparation of compounds of the general formula (XXV).
- Suitable anions are e.g. of inorganic acids or sulfonic acids.
- inorganic anions are chloride, bromide, sulfate, tetrafluoroborate, phosphate and rhodanide.
- Suitable carboxylic acid anions are formate, acetate, propionate, hexanoate, cyclohexanoate, lactate, stearate, acrylate, methacrylate, citrate, malonate or succinate and anions of polycarboxylic acids with up to 100 COOH groups.
- Sulfonic acid anions are, for example, benzenesulfonate or tosylate.
- the compounds according to the invention are outstandingly suitable for stabilizing organic material against the action of light, oxygen and heat. They are added to the material to be stabilized in a concentration of 0.001 to 5% by weight, preferably 0.02 to 1% by weight, based on the organic material, before, during or after its production, either alone or in combination with others Additives added.
- Organic material is to be understood, for example, as precursors for plastics, paints and oils, but in particular plastics, paints and oils themselves.
- the present invention also relates to an organic material, in particular plastics, lacquers and oils, which is stabilized against the action of light and oxygen and heat and which contains the compounds of the formula (I) in the concentrations given above. These materials include, for example, substances as described in EP-A-705836.
- the organic material stabilized by the compounds according to the invention may optionally contain further additives, for example antioxidants, light stabilizers, metal deactivators, antistatic agents, flame retardants, pigments and fillers.
- antioxidants, light stabilizers, metal deactivators, antistatic agents, flame retardants, pigments and fillers are, for example, compounds based on sterically hindered amines or sterically hindered phenols or costabilizers containing sulfur or phosphorus.
- Suitable additional additives include, for example, compounds as shown in EP-A-705836.
- Suitable additives in addition are: 2,2,, 2 "-nitrilo [triethyl-tris (3,3, 5,5, -tetra-tert-butyl-1, 1, biphenyl-2,2 ' - diyOph ⁇ sphit]; bis [2-methyl-4,6-bis (1, 1-dimethylethyl) phenol] ethyl phosphate; secondary hydroxylamines such as distearylhydroxylamine or dilaurylstearylamine; zeolites such as DHT 44; Zn stearate, Mg stearate , Ca stearate, particularly fine-grained material being particularly suitable for individual applications; condensation product of N, N'-bis [4,6-di (4-n-butylamino, 2,2,6, 6-tetramethylpiperid-4-yl ) 1, 3, 5-triazin-2-yl] -3-aminopropylethylene-1, 2-diamine and 2,4-dichloro-6- (4-n-but
- the additives are incorporated into the organic polymers using generally customary methods.
- the incorporation can be carried out, for example, by mixing or applying the compounds and, if appropriate, further additives into or onto the polymer immediately after the polymerization or into the melt or take place during shaping.
- the incorporation can also be carried out by applying the dissolved or dispersed compounds to the polymer directly or by mixing them into a solution, suspension or emulsion of the polymer, optionally with subsequent evaporation of the solvent.
- the compounds are also effective if they are subsequently introduced into an already granulated polymer in a separate processing step.
- the compounds according to the invention can also be added to the polymers to be stabilized in the form of a masterbatch which contains these compounds, for example in a concentration of 1 to 75, preferably 2.5 to 30% by weight.
- the dark brown suspension is stirred for a further 3 days at room temperature and then the entire reaction mixture is poured onto 2 l of water.
- Examples 3 to 48 in Table 1 were produced by one of the two condensation processes described in Examples 1 and 2.
- the melting point and the longest-wave absorption maximum, measured in dimethyl sulfoxide, are stated as characteristic features of the compounds.
- Examples 51 to 54 summarized in Table 2 were prepared by the method described in Example 51. - - p eox y - ----
- R 1 is hydrogen and R 2 is methyl.
- Example 57 Light-stabilizing effect in polypropylene films: 100 parts by weight of unstabilized polypropylene Hostalen PPK * together with 0.1 part by weight of calcium stearate, 0.05 part by weight of pentaerythrityl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate and 0.1 parts by weight of the stabilizer to be tested kneaded in a Brabender mixer for 10 min at 200 ° C. and 20 rpm. This mixture became 190 ° C a 100 ⁇ m thick film is pressed and the test specimens obtained in this way are exposed in a weathering device (Xenotest 1 200 *).
- the criterion for the stability of the film was the time taken for the carbonylindex to increase by 1.0 unit.
- E means the extinction at the respective wavelength.
- Tab. 3 underlines the very good sun protection effect of the stabilizers produced according to the invention.
- Example 58 Extraction behavior of the stabilizers in polypropylene films after exposure:
- test specimens produced as in Example 57 were exposed for 200 hours in a weathering device (Xenotest 1 200). The test specimens were then subjected to an exhaustive hot extraction with methylene chloride and the in remaining, non-extractable residual stabilizer content of the film is determined via a nitrogen determination (according to the chemiluminescence method). Before the start of the exposure, the entire amount of stabilizer was extractable from the test specimens under the extraction conditions used. The test results with details of the extractable amount are summarized in Table 4.
- the stabilizers according to the invention are much less extractable after 200 hours of exposure due to the change in molecular weight that takes place than before the exposure.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Plural Heterocyclic Compounds (AREA)
- Hydrogenated Pyridines (AREA)
- Paper (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97921831A EP0912514A1 (de) | 1996-05-07 | 1997-04-30 | Neue sterisch gehinderte piperidinderivate als lichtschutzmittel für polymere |
JP09539504A JP2000510174A (ja) | 1996-05-07 | 1997-04-30 | ポリマー用光安定剤としての新規な立体障害ピペリジン誘導体 |
AU27750/97A AU2775097A (en) | 1996-05-07 | 1997-04-30 | Novel sterically hindered piperidine derivatives acting as light stabilisers for polymers |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19618197A DE19618197A1 (de) | 1996-05-07 | 1996-05-07 | Neue sterisch gehinderte Piperidinderivate als Lichtschutzmittel für Polymere |
DE19618197.6 | 1996-05-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997042171A1 true WO1997042171A1 (de) | 1997-11-13 |
Family
ID=7793518
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/002212 WO1997042171A1 (de) | 1996-05-07 | 1997-04-30 | Neue sterisch gehinderte piperidinderivate als lichtschutzmittel für polymere |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0912514A1 (de) |
JP (1) | JP2000510174A (de) |
KR (1) | KR20000010801A (de) |
AR (1) | AR007007A1 (de) |
AU (1) | AU2775097A (de) |
DE (1) | DE19618197A1 (de) |
MA (1) | MA24173A1 (de) |
TW (1) | TW442477B (de) |
WO (1) | WO1997042171A1 (de) |
ZA (1) | ZA973877B (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0822221A2 (de) * | 1996-08-02 | 1998-02-04 | Clariant GmbH | Neue Lichtstabilisatoren auf Basis von sterisch gehinderten Aminen |
EP0900794A1 (de) * | 1997-09-04 | 1999-03-10 | Clariant GmbH | Lichtstabilisatoren auf der Grundlage sterisch gehinderter Amine |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1507826A4 (de) | 2002-05-17 | 2007-11-07 | Othera Pharmaceuticals Inc | Verbesserung der entwicklung von katarakten und anderen augenerkrankungen |
US7825134B2 (en) | 2003-05-19 | 2010-11-02 | Othera Holding, Inc. | Amelioration of cataracts, macular degeneration and other ophthalmic diseases |
US7807719B2 (en) * | 2004-09-14 | 2010-10-05 | Chaim Roifman | Compounds useful for modulating abnormal cell proliferation |
KR20210088857A (ko) | 2020-01-07 | 2021-07-15 | 김동찬 | 콜드보틀 및 그 제조설계 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0517103A1 (de) * | 1991-06-04 | 1992-12-09 | 3V SIGMA S.p.A | Piperidinderivate, ihre Herstellung und Verwendung |
GB2269819A (en) * | 1992-08-17 | 1994-02-23 | Sandoz Ltd | Hindered amine light stabilisers |
WO1997007159A1 (de) * | 1995-08-18 | 1997-02-27 | Clariant Finance (Bvi) Limited | Verwendung von piperidinverbindungen |
-
1996
- 1996-05-07 DE DE19618197A patent/DE19618197A1/de not_active Withdrawn
-
1997
- 1997-04-30 KR KR1019980708935A patent/KR20000010801A/ko not_active Application Discontinuation
- 1997-04-30 WO PCT/EP1997/002212 patent/WO1997042171A1/de not_active Application Discontinuation
- 1997-04-30 EP EP97921831A patent/EP0912514A1/de not_active Withdrawn
- 1997-04-30 AU AU27750/97A patent/AU2775097A/en not_active Abandoned
- 1997-04-30 JP JP09539504A patent/JP2000510174A/ja active Pending
- 1997-05-05 TW TW086106040A patent/TW442477B/zh active
- 1997-05-05 AR ARP970101860A patent/AR007007A1/es unknown
- 1997-05-06 ZA ZA9703877A patent/ZA973877B/xx unknown
- 1997-05-07 MA MA24597A patent/MA24173A1/fr unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0517103A1 (de) * | 1991-06-04 | 1992-12-09 | 3V SIGMA S.p.A | Piperidinderivate, ihre Herstellung und Verwendung |
GB2269819A (en) * | 1992-08-17 | 1994-02-23 | Sandoz Ltd | Hindered amine light stabilisers |
WO1997007159A1 (de) * | 1995-08-18 | 1997-02-27 | Clariant Finance (Bvi) Limited | Verwendung von piperidinverbindungen |
Non-Patent Citations (2)
Title |
---|
"POLYMER STABILIZERS", RESEARCH DISCLOSURE, no. 389, September 1996 (1996-09-01), pages 541 - 545, XP000635466 * |
LIGNER G ET AL: "HOW TO INCREASE HALS PERSISTENCE IN POLYOLEFINS WITHOUT JEOPARDISING STABILISATION EFFICIENCY", 11 November 1996, ADDCON. WORLDWIDE ADDIT. POLYMER MODIF. CONFERENCE, VOL. 125, NR. 20, PAGE(S) 1 - 8, XP002037628 * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0822221A2 (de) * | 1996-08-02 | 1998-02-04 | Clariant GmbH | Neue Lichtstabilisatoren auf Basis von sterisch gehinderten Aminen |
EP0822221A3 (de) * | 1996-08-02 | 1998-11-18 | Clariant GmbH | Neue Lichtstabilisatoren auf Basis von sterisch gehinderten Aminen |
US5919933A (en) * | 1996-08-02 | 1999-07-06 | Clariant Gmbh | Light stabilizers based on sterically hindered amines |
EP0900794A1 (de) * | 1997-09-04 | 1999-03-10 | Clariant GmbH | Lichtstabilisatoren auf der Grundlage sterisch gehinderter Amine |
US6172232B1 (en) | 1997-09-04 | 2001-01-09 | Clariant Gmbh | Light stabilizers based on sterically hindered amines |
Also Published As
Publication number | Publication date |
---|---|
KR20000010801A (ko) | 2000-02-25 |
JP2000510174A (ja) | 2000-08-08 |
TW442477B (en) | 2001-06-23 |
AU2775097A (en) | 1997-11-26 |
AR007007A1 (es) | 1999-10-13 |
MA24173A1 (fr) | 1997-12-31 |
DE19618197A1 (de) | 1997-11-13 |
EP0912514A1 (de) | 1999-05-06 |
ZA973877B (en) | 1997-11-07 |
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