Antioxidants.

PRODUCT LINES REVIEWED

ACETO CORP.

Polyphenols for plastics and rubber.

AKROCHEM CORP.

Antioxidants include hindered phenols, mercapto-benzimidazoles, dihydroquinoline, butylated paracresol, amines, and unsaturated acetals.

ALBEMARLE CORP.

Ethanox 702 sterically hindered diphenolic reportedly provides excellent temperature stability. It melts at 309 F and is FDA-approved for food-contact use in several substrates.

Ethanox 330 high-performance premium phenolic is noncoloring, extraction resistant, and FDA approved. It melts at 471 F and is biologically inert.

ALBRIGHT & WILSON AMERICAS

Trialkyl and dialkyl hydrogen phosphites are heat, light, and color stabilizers in polymers. Most popular are tris (2-chloroethyl) phosphite, triisopropylphosphite, trimethylphosphite, and bis (2-ethylhexl) hydrogen phosphite. Offer high solvency, slow oxidation, low volatility, and ability to combine with metal halides.

AMERICHEM INC.

Concentrates contain antioxidants, uv absorbers, and other stabilizers. Available for almost all thermoplastics in cubes, pellets, and powders.

AVECIA

PTZ phenothiazine stabilizes unsaturated polyester, polyolefins, styrenics, PUR, and vinyls. Xenoxyl stabilizer inhibits polymerizations of acrylic, styrenic and vinylic monomers.

BURLINGTON SCIENTIFIC CORP.

Burlox BHT (butylated hydroxytoluene) primary antioxidant for use in rubber, polyolefins, PS, thermoplastic elastomers, and coatings. Meets Food Chemical Codex requirements.

CHROMA CORP.

Dry powder or compounding of antioxidant masterbatches from 25-lb to truckloads in all resin systems and additives combined with colorants to provide multifunctional concentrates.

CIBA SPECIALTY CHEMICALS 

Irganox high-molecular-weight hindered phenolics provide long-term oxidative and thermal stability. Irganox 1010 and 1076 have good compatibility with polyolefins and styrenics and are FDA-regulated. Irganox MD-1024 is a metal deactivator and all-purpose antioxidant. Irganox 1035, 1010 and MD-1024 are for wire and cable.

Irganox B-225 and B-215 low-volatility, heat- and hydrolysis-resistant additive blends reportedly offer excellent processing and long-term stability in polyolefins.

New ES systems provide polyethylene fibers and thin-section materials with reportedly exceptional resistance to gas fade, excellent initial color, and a combination of long-term thermal and uv stability, in a phenolic-free stabilizer package. FS 812, a new combination of hindered amine stabilizer, uv absorber and hydroxyl amino processing stabilizer, offers gloss and color retention for molded-in color applications.

Irganox HP products are synergistic combinations of phenolic antioxidants, phosphites, and a new Lactone processing stabilizer. The combination results in improved melt flow control, allows for higher temperature processing, and can result in improved overall processing, heat, and long-term stability of the polymer.

New Irganox XP processing stabilizers are combinations of the new lactone processing stabilizer, high-performance phosphites and phenolic antioxidant. Irganox XP combines superior compatibility and solubility with outstanding processing stability and color control.

Irganox E a vitamin E antioxidant for use in food and medical packaging offers superior melt flow and color control, low migration, and superior extraction resistance. (See ad this page.)

CINCINNATI SPECIALTIES GROUP

Hindered phenolic and other antioxidants include CAO-3 food-grade BHT, which can be used for technical-grade applications; CAO-5 (antioxidant 2246), a tert-butylphenol; Prodox 168 tris(2,4-ditertiarybutyl phenyl) phosphite; Prodox 46-S 2,2-thiobis-(4-methyl-6-tertiarybutyl phenol); Prodox 316 styrenated p-cresol; Prodox-500 butylated hydroxy ethyl benzene (BHEB); Prodox-3114, tris-(di-tertbutyl hydroxy benzyl) isocyanurate; Prodox SCR tert-butyl-metacresol; Prodox 120 styrenated phenol; and Prodox 1010, tetrakis (methylene di-tert-butyl-hydroxy-hydrocinnamate) methane.

CLARIANT CORP.

BUSINESS UNIT ADDITIVES

Sandostab P-EPQ high-molecular-weight phosphonite secondary antioxidant for polyolefins and engineering resins is stable to 660 F and highly soluble and compatible in polyolefins, especially lower-density polyethylenes. Broadly FDA-approved with low migration, it synergizes with sulfur and phenolic antioxidants and lactones and is not deactivated by fillers such as talc. Especially suited for low-water-carryover polyolefin applications like 2X100 mil slit tapes. Also recommended for applications requiring high clarity. Product continues to be used for all polyolefins, styrenics, PC, polyesters, polyamides, polyther imides and other engineering resins to ald in maintaining color, rheological control and physical properties. Sandostab P-EPQ also inhibits burnout of many borderline heat-stable colorants for polyolefins and engineering resins and aids in dispersion of fillers and colorants and extends uv stability of recycled resins by providing better physical property retention of recycled resins prior to uv ex posure.

Hostanox PAR24 triphenyl phosphite secondary antioxidant offered alone or blended with Hostanox 010 and 016 as synergistic combinations of processing stabilization of polyolefins.

Hostanox 03 hindered phenolic antioxidant recommended for low-water extractability in appliance and nonappliance applications for extended long-term thermo-oxidative stability. It is synergistic with sulfur-based secondary antioxidants. Hostanox 010 high-molecular primary antioxidant and Hostanox 016 lower molecular-weight antioxidant recommended as processing and long-term thermo-oxidative stabilizers for polyolefins and engineering resins. Both are synergistic with sulfur- and phosphorus-based secondary antioxidants and offered as blends with phosphites.

Hostanox 014 primary antioxidant especially suited for polyolefin applications in thin and thick sections that need low gas staining and enhanced uv stabilization. Alone or combined with Sandostab P-EPQ or PAR24, it will not distract from uv stability of thin-section PP in fibers or slit films but rather enhance properties without the tendency for gas yellowing.

Hostanox OSP-1 metal deactivator and antioxidant has stronger metal deactivating properties than other metal deactivators.

COZ PLASTICS, INC.

Concentrates contain antioxidants, heat and light stabilizers, and lubricants in PS, polyolefins, and most other thermoplastics.

CROMPTON CORP. POLYMER ADDITIVES

Phenolic, phenolic-phosphite, and alkyl and aryl phosphite antioxidants for polyolefins, ABS, and other polymers include general-purpose and FDA-regulated grades in liquid and solid form.

Thioester-type secondaries include DLTDP, DMTDP, DSTDP, and blends for HDPE, LDPE, LLDPE, PF, and EVA modified FE, as well as engineering resins and elastomers.

CROMPTON CORP. UNIROYAL CHEMICAL

Naugard antioxidants include hindered phenolics, aromatic amines, and phosphites. Phenolics include Naugard BHT, Naugard 76, and Naugard 10 for polyolefins, styrenics, etc.

Liquid phenolic antioxidants include Naugard 536 for use in emulsion polymerization such as of ABS. Naugard 529 FDA-regulated liquid for polyolefins and Naugard SF economical general-purpose antioxidant.

Naugard XL-1 high-molecular-weight phenolic antioxidant and metal deactivator is reportedly the only FDA-regulated product to provide both antioxidant and metal-deactivation activity.

Aromatic amines include Naugard Super Q for carbon black systems such as wire and cable, and geomembranes. Naugard 445 white, nonstaining secondary amine for ABS, polyolefins, nylon, and polyether polyols; Naugard SA high-temperature, high-performance stabilizer; and Naugard HM11 and HM22 phenolic/ amine blends.

Phosphites include Naugard P and Wytox 312 general-purpose secondary antioxidants; Naugard 524 high-performance solid phosphite; and Naugard 492 phenolic/phosphite blend.

CYTEC INDUSTRIES INC.

Phenolic antioxidants include Cyanox 425, 2246, 1741 and 1790 for polyolefins and styrenics. Cyanox 1790 high-performance phenolic is said to offer excellent activity at one-half to one-third typical loadings as other hindered phenolics. It reportedly offers excellent gas-fade resistance, melt stabilization, and low hot-water extractability.

Cyanox 2777 high-performance phenolic/phosphite blend is based on Cyanox 1790 and hydrolysis-resistant tris(2,4-di-t-butylphenyl) phosphite.

New Cyanox 2888 antioxidant/phosphite blend is said to offer excellent melt processing protection in many resin systems and is resistant to discoloration. It also provides a high level of thermo-oxidative protection in rotomolded LLDPE applications.

Thioester antioxidants such as Cyanox LTDP, STDP, 1212, and 711 liquid synergize with phenolics for in-service stabilization of polyolefins and other polymers.

DOVER CHEMICAL CORP.

Dovernox solid hindered phenol antioxidants used as processing stabilizers for various polymers.

Doverphos liquid and solid organophosphites used as heat stabilizers for PVC, ABS, and polyolefins and also improve color stability in polyesters, polyurethanes, and alkyds.

EASTMAN CHEMICAL CO.

Hydroquinone derivatives are antioxidants for polyether polyols. Eastman Inhibitor OABH is a copper deactivator for polyolefins, especially in wire insulation. Tenox TBHQ and Tenox BHA are food-grade antioxidants for PE packaging.

EQUISTAR CHEMICALS, LP

Spectratech line includes concentrates containing various antioxidants, singly and in combination with other additives.

FAIRMOUNT CHEMICAL CO.

Mixxim AO-20 and AO-30 high-molecular-weight hindered phenolic antioxidants provide processing and in-use thermal stability and color stability to plastics and elastomers. Mixxim CD-12 metal deactivator retards degradation of polyolefin wire and cable. Also reduces extruder corrosion by halogenated flame-retardant polymers.

FLOW POLYMERS, INC.

Concentrated dispersions of all standard antioxidants come in a choice of compatible vehicles.

GE SPECIALTY CHEMICALS

Weston polymer additives include various liquid and solid organic phosphites that function as hydroperoxide decomposers, metal-complexing agents, and antioxidants. When used with primary antioxidants, phosphites offer increased resistance to heat and light. Weston 619 distearyl pentaerythritol diphosphite reduces discoloration in polyolefins and improves molecular weight control.

Ultranox 626, 627A and 641 high-performance secondary antioxidants offer cost-effective, optimum processing stability (color and melt flow), and gas-fade resistance to polyolefins, HIPS, ABS, PET, and other polymers. Ultranox 641 offers superior hydrolytic stability and hydrocarbon solubility.

Weston 619, Ultranox 626 and 627A have broad regulatory approval in PP, PE, PVC, and PC for food packaging. Weston TPP (triphenyl phosphite) is used primarily in. PVC and epoxies. Weston TNPP (tins nonylphenyl phosphite) improves processing and properties in many polymers and has broad regulatory approval for food packaging. Ultranox 200 series of phenolics includes Ultranox 276 high-molecular-weight hindered phenol.

GOODYEAR CHEMICAL

Nonstaining, nondiscoloring Wingstay phenolic antioxidants provide long-term protection against aging and degradation of polymers. Products are suited for rubber and plastic including solid rubber applications, latex foams, coatings and ABS resins. Some are suitable for food-contact applications. Wingstay amine antioxidant/antiozonants have low volatility and high activity. Suitable for high-temperature applications requiring resistance to weather and ozone.

GREAT LAKES CHEMICAL CORP.

Range of phenolic and phosphite antioxidants for various polymers includes Lowinox TBM6 thiobisphenol antioxidant, which has a synergistic effect with carbon black, for use in FE cables and pipes. Lowinox 22M46 and 44B25 are bisphenols widely used in synthetic rubber and latices.

Anox FF18, 20, IC-14, and 70 high-molecular-weight hindered phenolic antioxidants used in polyolefins. Anox PP18 and Lowinox GP45 used to stabilize styrenic polymers. Alkanox 240 is a widely used hydrolytically stable phosphite.

M.A. HANNA COLOR

Specialty additive concentrates, liquid or solid, with or without colorants available with antioxidants and other additives.

HITECH POLYMERS INC.

Custom made pelletized concentrates of antioxidants, pigments, and other additives for elastomers and engineering thermoplastics.

HOFFMANN-LAROCHE INC.

Ronotec high-performance primary phenolic antioxidants and proprietary formulations designed for specific end uses. Ronotec 202 liquid USP alphatocopherol (vitamin E) provides good processing and color stability. Safe and acceptable for food contact.

Ronotec 201 technical-grade vitamin E offers a cost-effective method to stabilize polyolefins, polyols, TPEs, and unsaturated polyesters. Exceptional thermal stability alleviates volatility problems and cuts down on gel formation in films and coatings.

Phosphite-free Ronotec CF-120 liquid tocopherol-based formulation provides color stability, superior melt-flow control, and eliminates hydrolytic instability and black specks.

KENRICH PETROCHEMICALS INC.

Titanate coupling agents provide antioxidant metal deactivation. Reported to be highly dispersible and about 25 times more efficient than products such as alkyl triaryl phosphites.

MAYZO, INC.

Manufactures and imports hindered phenolic antioxidants and proprietary liquid antioxidants.

MERISOL ANTIOXIDANTS LLC

Produces BHT.

MORTON INTERNATIONAL, INC.

Carstab and Morstille thioester synergists for PP, HDPE, and ABS. Carstab DLTDP (dilauryl thiodipropionate) and DSTDP (distearyl thiodipropionate) provide high performance when combined synergistically with hindered phenolics to retard color formation and embrittlement during processing or long-term heat aging. FDA-approved for food packaging.

MORTON PERFORMANCE CHEMICALS

PATCO ADDITIVES DIV.

Lactate-based neutralizers for use with all common antioxidant systems in polyolefins. Pationic 1233, 1240, 1250, 930, and 940 provide effective neutralization of residual metal catalysts and improve color and gas-fade properties.

REEDSPECTRUM DIV., CLARIANT CORP.

Custom-formulated antioxidant concentrates for thermoplastics include multifunctional pellet concentrates of antioxidants and metal deactivators for olefin polymers. Colorants may be included.

RHODIA HPCII

Uvi-Nox 1494 (tert-isobutyl-nonylphenol) liquid primary antioxidant provides improved thermal stabilization of polyolefins and lower vapor pressure.

SCHENECTADY INTERNATIONAL

Isonox 129 high-performance hindered phenolic crystalline antioxidant provides process stability to polyolefins and styrenics. Has broad FDA approval for indirect food contact. Isonox 132 low-cost, liquid hindered phenolic antioxidant for stabilizing liquid polyols also effective in PVC.

A. SCHULMAN INC.

Polybatch antioxidant concentrates include different carriers and other additives as required.

STANDRIDGE COLOR CORP.

Custom-formulated antioxidant concentrates for nylon, PP, and polyester fibers as single dispersions or in combination with other additives or colorants.

TECHMER PM

Concentrates of phenolics, phosphites, or blends of the two to meet any application in polyolefins.

TEKNOR COLOR CO.

Custom-formulated antioxidant concentrates for commodity resins can include other additives and processing aids.

SUB. OF TENOR APEX CO.

UNIROYAL CHEMICAL

See Crompton Corp.

R.T. VANDERBILT CO. INC.

Vanox phenolic and aromatic-amine antioxidants for PE, PP, nylon, and flexible urethane polyols. Vanox synergistic antioxidant systems improve high-temperature stability of filled PP.

WITCO CORP.

See Crompton Corp.

ZENECA INC.

See Avecia.