Antioxidants /Antiozonants
Specialty Chemicals and Additives For Rubber,
Polymers, Textiles, Lubricants and Intermediates.

 
 

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Western Reserve Chemical
  4837 Darrow Road
  Stow, OH 44224
  800-321-2676
  330-650-2244
  FAX-330 650-2255
  support@wrchem.com
 
  Antioxidants / Antiozonants
 
Western Reserve Chemical supplies the following chemicals and additives throughout the North American markets from our three warehouses located across the United States.
  
  Westco™ AOZ (100)
  A powerful and persistent antioxidant and antiozant. Ozone resistance is improved by the presence of waxes especially in CR.
 

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  Westco™ AO-29
  Styrenated diphenylamine
Westco™ AO-29 is a non-staining, slightly discoloring antioxidant for natural and synthetic rubbers and latices. Westco™ AO-29 provides excellent resistant to heat aging and flex fatigue.
It is especially effective in polychloroprene.
 

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  Westco™ AO-2246
  NON-STAINING ANTIOXIDANT
2.2’-methylenebis-(4-methyl-6-tertiary-butylphenol)
Westco™ AO-2246 is a highly effective non-staining non-discoloring phenolic antioxidant.
Westco™ AO-2246 can be used as the primary stabilizer in a wide range of synthetic elastomers including polybutadiene, styrene-butadiene, neoprene, butyl, halobutyl and nitrile rubber. Westco™ AO-2246 is highly recommended for use in natural and synthetic latex rubber, latex products, caulks, sealants, and adhesives.
 

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  Westco™ AO-309
  p-(p-toluenesulfonyl amido) diphenylamine
 

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  Westco™ AO-316
  Westco™ AO 316 - 2, 6 distyrl-p-cresol
Westco™ 316 combines the high activity of BHT with the low volatility of high molecular weight antioxidants. Westco™ 316 is recommended for use in rubber compounds using phenolic antioxidants, e.g. in caulks and sealants, molded rubber articles and adhesives. It may also find use in the stabilization of polyols used in urethane foams, where it can replace BHT, which is being phased out by the industry. It is an excellent antioxidant for polyolefins, particularly LLlDPE. Westco™ 316 is recommended as an economical replacement for Antioxidant 1076 in many applications, especially polystyrene, due to its lower cost, higher activity and liquid form. Westco™ 316 is also used in a variety of lubricants and industrial oils.
 

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  Westco™ AO-445G
  SLIGHTLY STAINING ANTIOXIDANT
4.4’-Bis (alpha, alpha-dimethylbenzyl) diphenylamine
Westco™ AO-445 is a very slightly staining, and discoloring in sunlight, antioxidant. Relatively nondiscoloring during heat aging. For BR, CR, nitrile (Paracril®) rubbers, EPDM (Royalene®), and SBR. The combination of high amine antioxidant activity, good color and low volatility makes it an ideal antioxidant and heat stabilizer for rubber and plastics. Westco™ AO-445 is especially effective in polyisoprene, Neoprene, nitrile (Paracril), HNBR and acrylic rubbers.
 

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  Westco™ AO668
  WESTCO AO 688 N-phenyl-N’-1-methylheptyl-p-phenylenediamine Antiozonant for natural and synthetic vulcanizates
 

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  Westco™ B-25
  Westco™ B-25, a diphenylamine-acetone reaction product, is an antioxidant for natural and synthetic rubbers. It is recommended for rubber compounds where resistance to heat aging and flex cracking are important, and where staining and discoloration are not objectionable.
 

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  Westco™ B-75
  A dispersion of B-25 on an inert filler. Westco™ B-75 is an antioxidant for natural and synthetic rubber compounds where resistance to heat aging and flex cracking are important and where staining and discoloration of light colored rubber are not objectionable.
 

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  Westco™ BHT "Non-Staining" Antioxidant
  2,6 di-tertiary-butyl-p-cresol (BHT)
Westco™ BHT is a versatile antioxidant that acts as a stabilizer and processing aid in natural and synthetic elastomers,
polymeric materials, subject to oxidation, packaging materials, waxes, insecticides, synthetic lubricants, paints, etc. Westco
BHT meets FDA specifications as an addition to a variety of food products, packaging, and other materials coming in contact
with food products.
It retards oxidation in animal, vegetable and mineral oils, fats, greases and products containing these materials..
 

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  Westco™ BHT Kosher "Non-Staining" Antioxidant
  2,6 di-tertiary-butyl-p-cresol (BHT)
Westco™ BHT is a versatile antioxidant that acts as a stabilizer and processing aid in natural and synthetic elastomers, polymeric materials, subject to oxidation, packaging materials, waxes, insecticides, synthetic lubricants, paints, etc. Westco™ BHT meets FDA specifications as an addition to a variety of food products, packaging, and other materials coming in contact with food products.
 

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Westco™ DPPD
  Westco™ DNPD - (N,N’-Di-b-naphthyl-p-phenylenediamine)

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Westco™ DNPD
  Westco™ DNPD - Diphenyl-p-phenylenediamine

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Westco IPPD
  Westco™ IPPD is used mainly in the manufacture of solid tires, belts, hoses, cables, automotive mounts and other mechanical goods requiring protection from ozonation. It provides powerful antiozonant and antioxidant properties to rubber compounds particularly in high temperature and flex fatigue applications. Recommended for use with NR, SBR and BR.

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  Westco™ NBC
  Nickel dibutyldithiocarbamate
Used as an antioxidant and UV stabilizer for NBR, SBR, BR and CR. It improves heat resistance of EPDM compounds and is used as a heat stabilizer for epichlorohydrin polymers and copolymers.
 

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  Westco OPDA
 

Westco OPDA Octylated diphenylamine
 

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  Westco PHP
 

Westco PHP is a polymeric, hindered phenolic, non-staining antioxidant.
 

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  Westco™ SP 120 DLD
  Westco™ SP120 DLD is a 70% active antioxidant on an inert carrier.
 

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  Westco™ SP 120 Styrenated phenol
  Westco™ SP-120 is a pale yellow to amber liquid-antioxidant for use in most elastomers, particularly SBR.  Westco™ SP-120 has FDA approval for use in rubber articles intended for repeated or continuous food contacts.  It is recommended for a variety of applications in plastics, elastomers, thermoplastic elastomers and urethane foams.  1-3 PHR is recommended.
 

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  Westco™ SP 120 Emulsion
 

Antioxidant Emulsion
This anionic-type emulsion is of a general purpose antioxidant used in latex compounding.  It is non-staining and non-discoloring, and provides good activity and persistence.  Suggested use level in natural and synthetic latices is 1.00 to 2.00 phr.
 

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  Westco™ 1010
 

Tetrakis[methylene-3(3’,5’-di-tert-butyl-4’-hydroxyphenyl)propionate]methane
Westco™ AO 1010 is a versatile antioxidant giving excellent processing stability and long term heat aging characteristics.  It is used in a variety of polymers where elevated processing temperatures are encountered.  Effective in mineral filled compounds based on fully saturated polymers used in rubber production. Also excellent for use in high density polyethylene and polypropylene production.
 

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  Westco™ AO 1076
 

Octadecyl 3,5-di-t-butyl-4-hydroxyhydrocinnamate
Westco™ AO-1076 is a cost-effective antioxidant used in a wide variety of polymers.  It has low color generation characteristics and is used whenever color is of major importance.  This product effectively reduces degradation of most polymeric substances and can be used in a wide variety of polymers, such as linear low-density polyethylene and polystyrene. Non-staining, prevents color and gel formation in unvulcanized SR’s.  Good thermal stabilizer.
 

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  Westco™ 6PPD
 

N-(1,3-dimethylbutyl)-N-phenyl-p-phenylenediamine
 Mainly used in manufacture of tires, rubber shoes and other technical goods. A very effective antioxidant and antiozonant for NR and SR.  It provides protection against flex cracking and heat aging.  Excellent incorporation and easy handling.

 

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  Westco™ MMBI
  Westco™ MMBI : 4-and5-methyl-2-mercaptobenzimidazole.
 

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  Westco™ TBHQ
  Tt-butyl hydroquinone.
 

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  Westco™ TBHQ Food Grade
  Tt-butyl hydroquinone.
 

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  Westco™ TMQ
  Westco™ TMQ belongs to a group of slightly staining, sterically hindered amines.  Westco™ TMQ is a highly effective agent that prevents heat-induced aging and also provides minor protection against ozone and fatigue crack failure.  Its major field of application is with black elastomers based on SBR. NR, IR, BR and NBR as well as lattices.  Highly effective agent, TMQ is also added to polyethylene that has been cross-linked with peroxide.
 

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  Westco™ ZMTI
  Westco™ ZMTI is a nonstaining, nondiscoloring antioxidant suitable for use in Natural and synthetic rubbers; it is especially effective in NBR and EPDM. Westco™ ZMTI is a synergist with Westco™ TMQ in high service temperature vulcanizates.
 

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Technical Data and MSDS Sheets
Technical Product Sheets and MSDS sheets are available for each of the chemicals listed. Click on any of the chemicals listed to access the links.
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1-800-321-2676
 
 

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