NO332004B1 - Fremgangsmate for a stabilisere en vandig farmasoytisk sammensetning, anvendelse av en antioksidant for a oppna nevnte stabilisering, samt en vandig oyensammensetning - Google Patents
Fremgangsmate for a stabilisere en vandig farmasoytisk sammensetning, anvendelse av en antioksidant for a oppna nevnte stabilisering, samt en vandig oyensammensetning Download PDFInfo
- Publication number
- NO332004B1 NO332004B1 NO20004872A NO20004872A NO332004B1 NO 332004 B1 NO332004 B1 NO 332004B1 NO 20004872 A NO20004872 A NO 20004872A NO 20004872 A NO20004872 A NO 20004872A NO 332004 B1 NO332004 B1 NO 332004B1
- Authority
- NO
- Norway
- Prior art keywords
- dimethylethyl
- composition
- antioxidant
- group
- hydroxyphenyl
- Prior art date
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Abstract
Den foreliggende oppfinnelsen beskriver en spesiell fremgangsmåte for å stabilisere en farmasøytisk sammensetning ved å kontakte sammensetningen med et polymermateriale omfattende en antioksidant.
Description
Den foreliggende oppfinnelsen beskriver spesielt en fremgangsmåte for å stabilisere en vandig farmasøytisk sammensetning ved å kontakte sammensetningen med et polymermateriale inneholdende en antioksidant. Videre vedrører oppfinnelsen anvendelse av en antioksidant som er innarbeidet i et polymermateriale, og en vandig øyensammensetning omfattende ketotifen eller et farmasøytisk akseptabelt salt derav og en antioksidant innarbeidet i et polymermateriale.
Det er et behov for å stabilisere farmasøytiske sammensetninger, spesielt vandige farmasøytiske sammensetninger, og spesielt vandige øyedråper, slik at de blir stabile mot dekomponering forårsaket av varme, lys og/eller oksygeneksponering.
EP 0827741 A2 viser til et transdermalt tilførselssystem for et ikke-steroid anti-inflammatorisk middel (NSAID) som er et propionsyrederivat for å øke den termo-dynamiske aktiviteten til midlet og permeabiliteten av midlet gjennom huden. Dette dokumentet viser ikke til anvendelse av en antioksidant i sammenheng med det krevde tilførselssystemet.
US 3.966.905 A viser til en katekolaminløsning med økt stabilitet og som omfatter, i et vandig medium: 0,1 til 10 vekt-% av et Cg til C12katekolamin; fra 0,1 til 5 vekt-% polyvinylpyrrolidon med en molekylvekt på fra omtrent 1 x IO<4>til omtrent 10 x IO<4>; fra omtrent 0,1 til omtrent 2 vekt-% borsyre som borat; og en fysiologisk akseptabel antioksidant valgt fra askorbinsyre, erytorbinsyre, acetylcystein og tioglycerol i en mengde på omtrent 0,1 til 5 vekt-%; en pH i området fra omtrent 5,5 til 8,5. Antioksidanten som det vises til i dette dokumentet er en del av løsningen som inneholder medikamentet, dvs. katekolaminet.
Problemet er løst i samsvar med hovedkravet, nemlig ved å kontakte nevnte farmasøy-tiske sammensetning med et polymermateriale som inneholder en antioksidant, der polymermaterialet er en støpt artikkel på form av et rør, en beholder eller en flaske. Fordelen med en slik stabilisering består i muligheten for å utelate en ekstra antioksidant og/eller en stabilisator som ellers er påkrevet hos slike farmasøytiske sammensetninger. Derfor viser slike farmasøytiske sammensetninger vanligvis en forbedret utholdenhet sammenlignet med ordinært stabiliserte sammensetninger, siden antioksidanten ikke administreres til organismen som har behov for en slik farmasøytisk sammensetning.
Følgelig er et formål ved den foreliggende oppfinnelsen en fremgangsmåte for å stabilisere en farmasøytisk sammensetning, spesielt i samsvar med hovedkravet, for eksempel ved å benytte en plastflaske omfattende en antioksidant.
Innenfor den foreliggende oppfinnelsen vedrører stabilisering stabiliteten av den samlede farmasøytiske sammensetningen og spesielt stabiliteten av den aktive ingrediensen i seg selv når den utsettes for lagring, oksygen og/eller luft (oksygenradikaler), lys (UV) og/eller varme (for eksempel steriliseringstrinn ved 121°C). Varmesterilisering vil også refereres til som autoklavering.
Uttrykket "polymermaterialet" vedrører en polymer som foretrukket er uløselig i den flytende farmasøytiske sammensetningen ifølge den foreliggende oppfinnelsen og der det polymere materialet videre kan være på formen av en tilfeldig støpt artikkel. Eksempler på støpte artikler er spesielt en pellet, en perle, en stang, en stav, et flak, et rør, eller en beholder og mer foretrukket en flaske. Et foretrukket polymert materiale omfatter eller består av polyetylen (PE), polypropylen (PP) og/eller blandinger derav.
Følgelig vedrører uttrykket "plastflaske" spesielt en polyetylen (PE)- og/eller en polypropylen (PP)-flaske. Disse kan eventuelt inneholde ytterligere hjelpemidler, slik som et lysabsorberende materiale, for eksempel titandioksid, et fargepigment, en UV-absorba-tor og/eller lignende.
En antioksidant innenfor betegnelsene ifølge den foreliggende oppfinnelsen forstås å være en forbindelse valgt fra gruppen bestående av 2,2',2",6,6',6"-heksa-(l,l-dimetyl-etyl)-4,4',4"-[(2,4,6-trimetyl-l,3,5-benzentriyl)-trismetylen]-trifenol ("Irganox 1330"), 1,3,5,tris[3,5-di(l ,1 -dimetyletyl)-4-hydroksybenzyl]- 1H,3H,5H-1,3,5-triazin-2,4,6-trion, pentaerytrityl tetrakis[3-[3,5-di(l ,1 ,-dimetyletyl)-4-hydroksyfenyl]-propionat], oktadecyl-3-[3,5-di( 1,1 -dimetyletyl)-4-hydroksyfenyl]-propionat, tris[2,4-di( 1,1 -di-metyletyl)-fenyl]-fosfitt, 2,2'-di(okta-decyloksy)-5,5'-spirobi(l,3,2-dioksafosforinan), dioktadecyldisulfid, dididecyl-3,3 '-tiodipropionat, dioktadecyl-3,3 '-tiodipropionat, butylhydroksytoluen, etylen bis[3,3-di[3-(l,l-dimetyletyl)-4-hydroksyfenyl]butyrat] og blandinger derav. En foretrukket antioksidant er "Irganox 1330".
Mengden av antioksidant som omfattes i polymermaterialet er typisk i området innenfor anbefalingene av den europeiske farmakopoe og er typisk fra 0,05 til 1,0 vekt-%, mer foretrukket fra 0,1 til 0,7 vekt-% og enda mer foretrukket fra 0,12 til 0,55 vekt-%. Andre antioksidanter, slik som askorbinsyre, acetylcystein, cystein, natriumhydrogen-sulfitt, butyl-hydroksyanisol og a-tokoferolacetat kan også være til stede.
En fordel ved en antioksidant omfattet i et polymermateriale ifølge den foreliggende oppfinnelsen er at det typisk kun er en minimal frigivelse, eller stort sett ingen frigivelse, av antioksidanten inn i et legemiddel og spesielt inn i en vandig øyensammensetning der sammensetningen er i kontakt med polymermaterialet. Dette kan typisk resul-tere i en faktisk ekskludering av antioksidanten fra den farmasøytiske sammensetningen.
En antioksidant benyttes typisk under fremstillingsprosessen av et polymermateriale for å unngå dekomponering og/eller oksidering. Følgelig er et slikt polymermateriale, spesielt innenfor termene ifølge den foreliggende oppfinnelsen, nemlig et polymermateriale omfattende en antioksidant.
En farmasøytisk aktiv ingrediens er for eksempel valgt fra gruppen bestående av acetyl-kolin, klorid, acyklovir, adrenalin, ametokain, aminokapronsyre, antazolinfosfat, arakin-donsyre, atropin, betaksolol, bupivakain, karbakol, karteolol, kloramfenikol, klortetra-cyklin, kymatrypsin, klonidin, kokain, korynantin, kromolyn, cyklopentolat, demakar-ium, deksametason, dibutolin, diklorfenamid, diklofenak, dipivefrin, ekodtiopat, efedrin, erytromycin, etambutol, etidokain, eukatropin, fluorometalon, fluormetolin, gentamycin, gramicidin, H-tymidin, homatropin, hyaluronsyre, hydrokortison, idoksuridin, indometacin, isofluoropat, isosorbide, ketorolak, ketotifen, laksesin, levobunolol, levokabastin, lidokain. lignokain, medrysin, mepivakain, metakolin, metazolamid, nafazolin, natamycin, neomycin, neostigmin, noradrenalin, ofloksacin, oksybuprokain, oksymeta-zolin, oksyfenonium, feniramin, fenyleprin, fysostigmin, pilokaprin, polymyksin B, prednisolon, proparakain, proksymetakain, pyrilamin, retinoinsyre, retinol, retinolacetat, retinolpalmitat, sokopolamin, sorbinil, sulfacetamid, tamoksifen, tetrakain, tetracyklin, tetrahydrozolin, timolol, trifluridin, tropikamid, vidarabin og farmasøytisk akseptable salter, og blandinger derav.
Foretrukne farmasøytiske aktive forbindelser er valgt fra gruppen av betaksolol, kloramfenikol, diklofenak, dipivefrin, efedrin, erytromycin, gentamycin, indometakain, ketotifen, levobunolol, levokabastin, ofloksakin, polokarpin, polymykdin B, prednisolon, retinoinsyre, retinol, retinolacetat, retinolpalmitat, tetracyklin og farmasøytisk akseptable salter derav.
Mer foretrukne farmasøytiske aktive forbindelser er valgt fra gruppen av betaksolol, kloramfenikol, diklofenak, ketotifen, levobunolol, levokabastin, pikokarpin, retinoinsyre, retinol, retinolacetat, retinolpalmitat og farmasøytisk akseptable salter derav.
Svært foretrukket er ketotifen, retinoinsyre, retinol, retinolacetat, retinolpalmitat og farmasøytisk akseptable salter derav.
Enda mer foretrukket er ketotifen og farmasøytisk akseptable salter derav.
Innenfor den foreliggende oppfinnelsen er en farmasøytisk sammensetningkarakterisertved bæreren der den farmasøytisk aktive forbindelsen blandes, suspenderes, oppløses og/eller delvis oppløses og velges fra gruppen bestående av vann, blandinger av vann og vannblandbare løsningsmidler, slik som Ci- til C7-alkanoler, vegetabilske oljer og mineraloljer omfattende fra 0,5 til 5 vekt-% hydroksyetylcellulose, etyloleat, karboksymetylcellulose, polyvinylpyrrolidon og andre ikke-toksiske vannløselige polymerer, spesielt for øyebruk, slik som for eksempel cellulosederivater, slik som metylcellulose, alkaliske metallsalter av karboksymetylcellulose, hydroksymetylcellulose, hydroksyetylcellulose, metylhydroksypropylcellulose og hydroksypropylcellulose, akrylater eller metakrylater, slik som salter av polyakrylsyre eller etylakrylat, polyakrylamider, natur-stoffer, slik som gelatin, alginater, pektiner, tragant, karayagummi, xantangummi, karra-genin, agar og akasia, stivelsesderivater, slik som stivelsesacetat og hydroksypropylstiv-else, og også andre syntetiske stoffer, slik som polyvinylalkohol, polyvinylpyrrolidon, polyvinylmetyleter, polyetylenoksid, foretrukket kryssbundet polyakrylsyre, slik som naturlig karbapol, eller blandinger av disse polymerene. Foretrukne bærere er vann, cellulosederivater, slik som metylcellulose, alkaliske metallsalter av karboksymetylcellulose, hydroksymetylcellulose, hydroksyetylcellulose, metylhydroksypropylcellulose og hydroksypropylcellulose, naturlig karbopol, eller blandinger derav. En svært foretrukket bærer er vann. Konsentrasjonen av bæreren er typisk fra 1 til 100.000 ganger konsentrasjonen av den aktive ingrediensen. Uttrykket "vandig" står typisk for en vandig sammensetning der bæreren er i en utstrekning av mer enn 50%, mer foretrukket mer enn 75% og spesielt mer enn 90%, basert på vekt vann.
Innenfor termene ifølge den foreliggende oppfinnelsen vedrører betegnelsen "sammensetning" spesielt en løsning, en suspensjon, en gel, en salve, en emulsjon og/eller en blanding derav.
Videre er farmasøytiske sammensetninger som er egnede for okular administrering foretrukket. Derfor omfatter en slik farmasøytisk sammensetning foretrukket ytterligere ingredienser for å møte kravene for okular tålelighet. Ved et spesielt aspekt vedrører den foreliggende oppfinnelsen derfor stabiliseringen av en øyensammensetning og spesielt en vandig øyensammensetning.
Disse ytterligere ingrediensene kan inkludere toniske forsterkere, konserveringsmidler og pH-regulerende midler.
For reguleringen av pH, foretrukket til en fysiologisk pH, kan buffere være spesielt nyttige. Eksempler på buffersubstanser er acetat, askorbat, borat, hydrogenkarbonat/- karbonat, citrat, glukonat, laktat, fosfat, propionat og TRIS (trometamin)-buffere. Trometamin- og boratbuffer er foretrukne buffere. Mengden av buffersubstans som tilsettes er typisk den som er nødvendig for å sikre og opprettholde et fysiologisk tålelig pH-område. pH-området er generelt i området fra 4 til 9, foretrukket fra 4,5 til 8,5 og mer foretrukket fra 5,0 til 8,2.
Tonisitet reguleres, om nødvendig, typisk ved toniske forsterkningsmidler. Slike midler kan for eksempel være av ionisk og/eller ikke-ionisk art. Eksempler på ioniske tonisi-tetsforsterkere er for eksempel alkalimetall eller jordmetallhalider, slik som for eksempel CaCl2, KBr, KC1, LiCl, Nal, NaBr eller NaCl, Na2S04eller borsyre. Ikke-ioniske tonisitetsforsterkningsmidler er for eksempel urea, glyserol, sorbitol, mannitol, propylenglykol eller dekstrose. Typisk kan en tilstrekkelig mengde av tonisk forsterk-ningsmiddel tilsettes for å gi en øyensammensetning, som beskrevet over, en osmolalitet på omtrent fra 50 til 1000 mOsmol, foretrukket fra 100 til 400 mOsmol, mer foretrukket fra 200 til 400 mOsmol og enda mer foretrukket fra 250 til 350 mOsmol.
Et konserveringsmiddel kan typisk velges fra en kvaternær ammoniumforbindelse, slik som benzalkoniumklorid, benzokaoniumklorid eller lignende. Benzalkoniumklorid beskrives bedre som: N-benzyl-N-(C8-Ci8alkyl)-N,N-dimetylammoniumklorid. Eksempler på konserveringsmidler som er forskjellige fra kvaternære ammoniumsalter er alkyl-kvikksølvsalter av tiosalisylsyre, slik som for eksempel tiomersal, fenylkvikk-sølvnitrat, fenylkvikksølvacetat eller fenylkvikksølvborat, parabener, slik som for eksempel metylparaben eller propylparaben, alkoholer, slik som for eksempel klorbuta-nol, benzylalkohol eller fenyletanol, guanidinderivater, slik som for eksempel klorheksi-din eller polyheksametylenbiguanid, natriumperborat, "Germal II" eller sorbinsyre. Foretrukne konserveringsmidler er kvaternære ammoniumforbindelser, spesielt benzalkoniumklorid, alkyl-kvikksølvsalter og parabener. Når det er passende, tilsettes en tilstrekkelig mengde av konserveringsmiddel til øyensammensetningen for å sikre beskyttelse mot sekundære forurensninger ved bruk forårsaket av bakterier og sopp.
En farmasøytisk sammensetning kan i tillegg behøve nærvær av et oppløsningsmiddel, spesielt dersom de aktive eller ikke-aktive ingrediensene tenderer til å danne en suspensjon eller en emulsjon. Et oppløsningsmiddel som er egnet for en sammensetning som beskrevet over er for eksempel valgt fra gruppen bestående av tyloksapol, fettsyre-glyserolpolyetylen-glykolestere, fettsyrepolyetylen-glykolestere, polyetylen-glykoler, glyserolestere, et cyklodekstrin (for eksempel a-, (5- eller y-cyklodekstrin, for eksempel alkylerte, hydroksyalkylerte, karboksyalkylerte eller alkyloksykarbonyl-alkylerte deri-vater, eller mono- eller di-glykosyl-oc-, (5- eller y-cyklodekstrin, mono- eller di-maltosyl-a-, p- eller y-cyklodekstrin eller panosyl-cyklodekstrin), polysorbat 20, polysorbat 80 eller blandinger av disse forbindelsene. Et spesifikt eksempel på et spesielt foretrukket oppløsningsmiddel er et reaksjonsprodukt av lakserolje og etylenoksid, for eksempel de kommersielle produktene "Cremophor EL" eller "Cremophor RH 40". Reaksjonspro-dukter av lakserolje og etylenoksid har vist seg å være spesielt gode oppløsningsmidler som tolereres ekstremt bra av øyet. Et annet foretrukket oppløsningsmiddel er valgt fra tyloksapol og fra cyklodekstrin. Konsentrasjonen som benyttes avhenger spesielt av konsentrasjonen av den aktive ingrediensen. Mengden som tilsettes er typisk tilstrekkelig for å oppløse den aktive ingrediensen. For eksempel er konsentrasjonen av oppløs-ningsmiddelet fra 0,1 til 5.000 ganger konsentrasjonen av den aktive ingrediensen.
En ovenfor beskrevet farmasøytisk sammensetning kan videre omfatte ikke-toksiske eksipienter, slik som for eksempel emulgeringsmidler, fuktemidler eller fyllstoffer, slik som for eksempel polyetylenglykolene betegnet 200, 300 400 og 600, eller karbowax betegnet 1000, 1500, 4000, 6000 og 10000. Andre eksipienter som kan benyttes, om ønskelig, er opplistet nedenfor, men de er ikke ment å begrense omfanget av mulige eksipienter på noen måte. Mengden og typen av eksipient som tilsettes er i samsvar med de spesielle behovene og er generelt i området fra omtrent 0,0001 til omtrent 90 vekt-%.
Ytterligere formål ved den foreliggende oppfinnelsen er de som er beskrevet i alle selv-stendige og uselvstandige krav.
Et ytterligere formål ifølge den foreliggende oppfinnelse er anvendelsen av en plastflaske i samsvar med eksemplene for å stabilisere en sammensetning som der er beskrevet.
Oppfinnelsen tilveiebringer også anvendelse av en antioksidant som er innarbeidet i et polymermateriale, som er en støpt artikkel på form av et rør, en beholder eller en flaske, for stabiliseringen av en farmasøytisk sammensetning.
Endelig tilveiebringer oppfinnelsen en vandig øyensammensetning omfattende ketotifen eller et farmasøytisk akseptabelt salt derav og en antioksidant innarbeidet i et polymermateriale som er en støpt artikkel på form av et rør, en beholder eller en flaske, og der polymermaterialet er valgt fra gruppen bestående av polyetylen, polypropylen og en blanding derav.
Eksempel 1; Ketotifen 0, 025% øyedråper
Eksempel 2; Ketotifen 0, 05% øyedråper
Eksempel 3;
Ingredienser omfattet i en 0,025% øyensammensetning omfattende ketotifen:
Eksempel 4;
Ingredienser omfattet i en 0,05% øyensammensetning omfattende ketotifen:
Eksempel 4 (fortsatt) Eksempel 5; Vitamin A øyedråper
Eksempel 6;
Ingredienser omfattet i vitamin A øyedråper (gel) Eksempel 6 (fortsatt)
Eksempel 7;
Ketotifen øyedråper ifølge eksempel 3 (0,025% øyensammensetning) utsatt for stabilitetstest:
0-verdi stresstest ved 40°C og 75 % relativ fuktighet
Claims (15)
1.
Fremgangsmåte for stabilisering av en vandig farmasøytisk sammensetning,karakterisert vedå kontakte nevnte farmasøytiske sammensetning med et polymermateriale som inneholder en antioksidant, der polymermaterialet er en støpt artikkel på form av et rør, en beholder eller en flaske.
2.
Fremgangsmåte ifølge krav 1, der den farmasøytiske sammensetningen er en øyensammensetning.
3.
Fremgangsmåte ifølge krav 1-2, der sammensetningen er en løsning.
4.
Fremgangsmåte ifølge et hvilket som helst av krav 1-3, der polymermaterialet er valgt fra gruppen bestående av polyetylen, polypropylen og en blanding derav.
5.
Fremgangsmåte ifølge krav 4, der polymermaterialet er på form av en flaske.
6.
Fremgangsmåte ifølge krav 1, der antioksidanten er valgt fra gruppen bestående av 2,2 ',2",6,6',6"-heksa-( 1,1 -dimetyletyl)-4,4',4"-[(2,4,6-trimetyl-1,3,5-benzentriyl)-trismetylen]-trifenol ("Irganox 1330"), l,3,5,tris[3,5-di(l,l-dimetyletyl)-4-hydroksy-benzyl]- 1H,3H,5H-1,3,5-triazin-2,4,6-trion, pentaerytrityl tetrakis[3- [3,5 -di( 1,1,-dimetyletyl)-4-hydroksyfenyl]-propionat], oktadecyl-3-[3,5-di(l,l-dimetyletyl)-4-hydroksyfenyl]-propionat, tris[2,4-di( 1,1 -dimetyletyl)-fenyl]-fosfitt, 2,2 '-di(okta-decyloksy)-5,5' -spirobi( 1,3,2-dioksafosforinan), dioktadecyldisulfid, dididecy 1-3,3' - tiodipropionat, dioktadecyl-3,3'-tiodipropionat, butylhydroksytoluen, etylen bis[3,3-di[3-(l,l-dimetyletyl)-4-hydroksyfenyl]butyrat] og blandinger derav.
7.
Fremgangsmåte ifølge krav 1 eller 5, der polymermaterialet er valgt fra gruppen bestående av polypropylen og polyetylen og antioksidanten er valgt fra gruppen bestående av 2,2\2",6,6\6"-heksa-(l,l-dimetyletyl)-4,4\4"-[(2,4,6-trimetyl-l,3,5- benzentiryl)-trismetylen]-trifenol ("Irganox 1330"), l,3,5,tris[3,5-di(l,l-dimetyletyl)-4-hydroksybenzyl]-lH,3H,5H-l,3,5-triazin-2,4,6-trion, pentaerytrityl tetrakis[3-[3,5-di( 1,1 ,-dimetyletyl)-4-hydroksyfenyl]-propionat], oktadecyl-3-[3,5-di( 1,1 -dimetyletyl)-4-hydroksyfenyl]-propionat og tris[2,4-di(l,l-dimetyletyl)-fenyl]-fosfitt, 2,2'-di(okta-decyloksy)-5,5'-spirobi( 1,3,2-dioksafosforinan).
8.
Fremgangsmåte ifølge krav 1 eller 5, der polymermaterialet er polypropylen og antioksidanten er valgt fra gruppen bestående av butylhydroksytoluen og 2,2',2",6,6',6"-heksa-( 1,1 -dimety letyl)-4,4' ,4"- [(2,4,6-trimetyl-1,3,5 -benzentriyl)-trismetylen]-trifenol ("Irganox 1330").
9.
Fremgangsmåte ifølge krav 8, der sammensetningen er en øyensammensetning.
10.
Fremgangsmåte ifølge krav 9, der øyensammensetningen videre omfatter en farmasøy-tisk aktiv ingrediens valgt fra gruppen bestående av ketotifen, retinonsyre, retinol, retinolacetat, retinolpalmitat og farmasøytiske akseptable salter derav.
11.
Fremgangsmåte ifølge krav 9, der sammensetningen videre omfatter en buffer, en tonisitetsforsterker og et konserveringsmiddel.
12.
Anvendelse av en antioksidant som er innarbeidet i et polymermateriale, som er en støpt artikkel på form av et rør, en beholder eller en flaske, for stabiliseringen av en farma-søytisk sammensetning.
13.
Anvendelse ifølge krav 12, der sammensetningen omfatter en farmasøytisk aktiv ingrediens valgt fra gruppen bestående av ketotifen, retinonsyre, retinol, retinolacetat, retinolpalmitat og farmasøytiske akseptable salter derav.
14.
En vandig øyensammensetning omfattende ketotifen eller et farmasøytisk akseptabelt salt derav og en antioksidant innarbeidet i et polymermateriale som er en støpt artikkel på form av et rør, en beholder eller en flaske, og der polymermaterialet er valgt fra gruppen bestående av polyetylen, polypropylen og en blanding derav.
15.
Sammensetning ifølge krav 14, der antioksidanten er valgt fra gruppen bestående av 2,2 ',2",6,6',6"-heksa-( 1,1 -dimetyletyl)-4,4',4"-[(2,4,6-trimetyl-1,3,5-benzentriyl)-trismetylen]-trifenol ("Irganox 1330"), l,3,5,tris[3,5-di(l,l-dimetyletyl)-4-hydroksy-benzyl]- 1H,3H,5H-1,3,5-triazin-2,4,6-trion, pentaerytrityl tetrakis[3- [3,5 -di( 1,1,-dimetyletyl)-4-hydroksyfenyl]-propionat], oktadecyl-3-[3,5-di( 1,1 -dimetyletyl)-4-hydroksyfenyl]-propionat, tris[2,4-di( 1,1 -dimetyletyl)-fenyl]-fosfitt, 2,2 '-di(okta-decyloksy)-5,5' -spirobi( 1,3,2-dioksafosforinan), dioktadecyldisulfid, dididecy 1-3,3' - tiodipropionat, dioktadecyl-3,3'-tiodipropionat, butylhydroksytoluen, etylen bis[3,3-di[3-(l ,l-dimetyletyl)-4-hydroksyfenyl]butyrat] og blandinger derav.
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