Stabilizers for Polyolefins

Sesamex [51-14-9] (Sesoxane) (30) is a synergist oflow toxicity, acute oral LD q (rat) = 2000 2270 mg/kg, for pyrethrins and allethrin. 6,7-Dihydroxy 4-methylcoumarin has been offered as an antioxidant for phenoHcs and polymers, and as an anthelmintic. 2,4,5-Trihydroxybutyrophenone has been available as an antioxidant and light stabilizer for polyolefins, waxes, and foods. Isoflavones, eg (31), have been patented as components of antioxidant compositions for foods and cosmetics (qv) (97). [Pg.381]

C. Krohnke and F. Wemer, Stabilizers for Polyolefins, Rapra Review Report No. 132, Rapra Technology Ltd, Shawbury (2001). [Pg.790]

The hindered-amine light stabilizers for polymers are piperidine derivatives. An example of these products is bis-(2.2,6,6-tetramethyl-4-pipendinyl)sebaeale, tradenained Tinuviii 770, useful as a light stabilizer for polyolefins and styrenics. [Pg.1389]

Selected Novel Trivalent Organophosphorus Processing Stabilizers for Polyolefins... [Pg.351]

Hindered phenols and dialkylhydroxylamines protect plastics against thermal oxidation. Alkylated benzo[b]furane-2(3H)-ones was introduced very recently as a processing stabilizer for polyolefins. [Pg.56]

High molecular weight hindered phenolic antioxidant with photo-and thermo-stability. Provides low volatility and resistance to extraction from polymer compounds. Suitable for PP, PE, polystyrene, ABS, PVC, nylon, and polyurethane. Also used as a radical scavenger providing stabilization for polyolefins. [Pg.102]

Horsey, D. Hydroxylamines, a new class of low color stabilizers for polyolefins. Proceedings of the Fifth International Conference Additives 96, ECM Houston, 1996. [Pg.99]

Since polyolefins readily undergo oxidative deterioration on exposure to UV light, conventional stabilizers were found to be unsatisfactory for long-term outdoor applications. Therefore, more effective stabilizers for polyolefins were desired. [Pg.38]

Piperazine HALS 2 is a colorless crystalline solid which melts at 134-6°C. It is a powerful UV stabilizer for polyolefins as illustrated in the outdoor aging data in isotactic polypropylene tapes. [Pg.92]

Photostabilization processes have not received much attention in the last year other than a multitude of review and specialist industrial articles. These include stabilization of polypropylene fibres, new stabilizer developments, sorting of stabilizers for polyethylene, trends in UV absorbers, hindered piperidines (hindered amine stabilizers (HAS)) for polyacrylics and urethanes, new stabilizers for polyolefins, enhanced service life applications, stabilizer mas-terbatches for polyester, stabilizers for UV cured acrylic overcoats for PVC, ° stabilization of clearcoats and various commercial packages. ... [Pg.240]

It has been shown that the efficiency of esters of 4-hydroxy-3,5-di-f-butylbenzoic acid as light stabilizers for polyolefins is not related to the yield of the photo-Fries rearrangement [132]... [Pg.397]

Chitnassorb . [Ciba-Geigy/Additives] Polymeric hindered amine light and heat stabilizer for polyolefins. [Pg.75]

Mixxim. [Fairmount] Hindoed amine light stabilizer for polyolefins, PS, ABS, PVC, polyurethane, engineering plastics, and elastomers. [Pg.235]

ADK Stab LA 77 Bis(2,2,6,6-tetramethyl-4-piperidinyl) decanedioate Bis(2,2,6,6-tetramethyl-4-piperidinyl)-sebacate Decanedioic acid, bis 2,2,6,6-tetramethyl-4-piperidinyl) ester EINECS 258-207-9 HALS 1 HALS 770 Lowilite 77 LS 770 Mark LA 77 Sanol Sanol 770 Sanol LS 700 Sanol LS 770 Sumisorb 577 T 770 TIN 770 Tinuvin 770 Tinuvin 770DF Tinuvin 770LS TK-10665 Uvaseb 770. Light stabilizer for polyolefins, ABS, PUR acrylics, PS and styrene copolymers, thermoplastic elastomers, ethylene-propylene copolymers, polyamides. Ciba-Geigy Corp. En/Chem SpA bowi. [Pg.74]

AI3-02480 Butanedioic acid, dimethyl ester CCRIS 4803 Dimethyl butanedioate Dimethyl succinate EINECS 203-419-9 FEMA No. 2396 HSDB 5370 Methyl butanedioate Methyl succinate NSC 52209 Succinic acid, dimethyl ester. Light and heat stabilizer for polyolefins, ABS polymer systems, flexible PVC, food packaging chemical intermediate. Liquid mp = 19° bp = 196.4° d = 1.0020 very soluble in Me2CO, CeHe, EtzO. Ashland Chemie Linz N. Am. DuPont Fluka Lancaster Synthesis Co. Penta Mfg. Sigma-Aldrich Fine Chem. [Pg.234]

Ethylidene bis(4,6-di-t-butylphenol), 2,2 -Ethylidenebis(4,6-di-t-butylphenol)i EINECS 252-816-3 Phenol, 2,2 -ethylidenebis(4,6-bis(1,1-dimethyl-ethyl)- Vanox 1290, Antioxidant oxidative inhibitor for polymers process stabilizer for polyolefins stabilizer for PU and PS, Crystals mp 162-164°, Vanderbilt R.T. Co. Inc. [Pg.276]

Hydroxy-3 -t-butyl-5 -methylphenyl)-5-chioro-benzotriazole. Bumetrizol Bumetrizole Bumetrlzolum 2-t-Butyl-6-(5-chloro-2H-benzotriazol-2-yl)-p-cresoi 2-(5-Chloro-2H-ben20triazol-2-yl)-6-(1,1-dimethylethyl)-4-methylphenol EINECS 223-445-4 2-(2-Hydroxy-3-t-butyl-5-methyl-phenyi)-5-chloro-2H-benzotriazole 2-(2-Hydroxy-3 -t-butyl-5 -methylphenyl)-5-chloroben20-triazole Lowltit 26 Phenol, 2-(5-chloro-2H-benzotriazol-2-yl)-6-( 1,1 -dimethylethyl)-4-methyl- Tinuvin UV Absorber-6 Uvazol 236. UV stabilizer for polyolefins, polyester resins and coatings, Used to protect polyolefins, slyrenics, acrylics, PVC, unsaturated polyesters, elastomers, PC, and PU, EniChem SpA Lowi. [Pg.328]

The piperidines and and the nltroxlde are recognized as being very efficient light stabilizers for polyolefins (204). Whatever the reasons nay be for the activity of these UV-transparent, sterlcally hindered piperidines, let us nevertheless now consider their ability to quench singlet oxygen. [Pg.140]

Materials that are not eflfective inhibitors when used alone may nevertheless be able to function as synergists by reacting with an oxidized form of an antioxidant to regenerate it and thus prolong its effectiveness. For example, carbon black forms an effective combination with thiols, disulfides, and elemental sulfur, even though these substances may be almost completely ineffective alone under comparable conditions. Synergistic combinations from a variety of chain terminators and sulfur compounds have been reported. A widely used combination of stabilizers for polyolefins is 2,6-di-ferf-butyl-4-methylphenol (BHT) (Figure 1.41a) with dilauryl thiodipropionate (DLTDP) ... [Pg.107]

Light stabilizers for polyolefins, supplier product guide. Ciba. [Pg.248]

Carbon black is a well-known stabilizer for polyolefins, but has limited utility in fibers unless a black fiber is desired. Even then, the stability of black fibers is not sufficient for many current end-uses. UV absorbers are reasonably effective in products of thick cross section but are of hmited value for products of low denier per filament. The small cross section prevents absorption from being effective. [Pg.180]

Chem. Descrip. Trisnonylphenyl phosphite, 0.75% triisopropanolamine Uses Antioxidant, stabilizer for polyolefins, acrylics, adhesives, elastomers, nylon, PC, PU, PS, PVC, coatings, ABS, PET, food-contact polymers Features Hydrolysis-resist. [Pg.271]

Chem. Descrip. Triisodecyl phosphite CAS 25448-25-3 EiNECS/ELiNCS 246-998-3 Uses Heat stabilizer for polyolefins, PU, PVC, PET, coatings, lubricants improves color in rigid and plasticized PVC chelating agent with metal carboxylates as polymer additives, esp. for chlorinated polymers such as PVC and chlorinated PE antioxidant and EP agent for lubricants Properties APHA 50 max. clear liq. sp.gr. 0.884-0.904 (25/15.5 C) dens. 7.4 Ib/gal vise. 15 cps acid no. 0.05 max. flash pt. (COC) 420 F ref. index 1.4530-1.4610 6.2% P Toxicology Skin irritant... [Pg.271]

Uses Light stabilizer for polyolefins. PS, HIPS, ABS, SAN, ASA Manuf/Distrib. Gallard-Schlesinger Ind. [Pg.999]

Uses Heat/light stabilizer for polyolefins, ABS polymer systems, flexible PVC, food pkg. emollient synthetic flavoring agent in foods and pharmaceuticals solvent for coatings, cleaners, inks, textile lubricants, urethane prod. plasticizer for flexible thennoset polyester polymer intermediate for polyester polyols for urethanes, wet-str. paper resins, polyester resins specialty chemical intennediate Features Fruity flavor... [Pg.1088]

Properties Wh. powd. m.w. 638.93 dens. 1.08 kg/l m.p.101 C Uses Antioxidant, stabilizer for polyolefins, elastomers, styrenics, polyacetals, cellulosics, polyesters, PU, PVC, petroleum prods., org. substrates, food-grade polymers antioxidant in lubricants for incidental food-contact use... [Pg.1138]

Toxicology LD50 (rat) > 6000 mg/kg nontoxic Uses Light stabilizer for polyolefins, ethylene copolymers, PU, surf, coatings... [Pg.1207]

Properties Lt. gm. powd. m.w. 572.54 m.p. 258-281 C Toxicology LD50 (oral, rat) >10 g/kg, (dermal, rabbit) >10 g/kg Uses UV and heat stabilizer for polyolefins, ABS protects syn. resins and paints, esp. in aerospace industry energy quencher free radical scavenger... [Pg.1383]

Toxicology LD50 (oral, rat) 6300 mg/kg TSCA listed Uses Antioxidant/stabilizer for polyolefins, polyamides, PU, PVC, PS, rubbers, cellulosics, food-grade polymers, food-pkg. adhesives antioxidant in lubricants for incidental food-contact use metal deactivator Regulatay FDA 21CFR 175.105,178.2010,178.3570 Manuf./Distrib. Ciba Spec. Chems./Addit. [Pg.1383]

Uses Antioxidant, stabilizer for polyolefins, food-grade poiymers... [Pg.1235]

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