Rubber Compounding Materials
Vulcanization Materials
Activators
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Tradename
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Composition
Supplier
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Properties
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Function
& Compounding
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Polydex M(TEA)75
75% TEA on a Microcel E carrier
Polychem Dispersionsï |
Sp.gr. 1.29; triethanolamine in a powdered form.
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Easier handling and faster incorporation for mill and internal mixing.
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Polydex PPD(ZNO)75
75% zinc oxide in light process oil
Polychem Dispersionsï |
Sp.gr. 2.43; zinc oxide in a paste form.
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Paste form for better incorporation in soft compounds or for late mixer additions.
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Poly-Dispersion ERD-90
Red Lead in an EPR binder
Rhein Chemie Corporationï |
Sp.gr. 4.57; Red Lead, 90%; very fine dispersion in elastomeric slab form, scored, dusted and separated with PE.
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To produce low water absorption polychloroprene compounds and EPDM wire; provides processing and handling safety, excellent dispersion, uniform cures curing activator for CR, IIR, CSM.
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Poly-Dispersion GRD-90
90% Red Lead oxide in an ECO binder
Rhein Chemie Corporationï |
Sp.gr. 5.18; orange slabs
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Used as a cure activator in ECO cure systems; the red lead acts as an acid scavenger for the cure system allowing a more rapid cure.
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Poly-Dispersion JZFD-90P
88% zinc oxide in a NR binder
Rhein Chemie Corporationï |
Sp.gr. 3.50; white pellets
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Vulcanizing activator for use in natural and synthetic rubber compounds.
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Poly-Dispersion SR-517-50
50% Saret 517 in polymeric binder
Rhein Chemie Corporationï |
Sp.gr. app. 1.12; encapsulated and protected form.
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Crosslinkable; acrylic monomer, used in peroxide vulcanization to provide high hardness; promotes batch to batch cure rate uniformity.
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Poly-Dispersion T(HRL)D-90
Fine particle size litharge in an EPDM binder
Rhein Chemie Corporationï |
Sp.gr. 4.75; litharge 90%; very fine dispersion in elastomeric slab form, scored, dusted, and separated with PE.
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chlorosulfonated polyethylene stabilizer, add in first step in mixing cycle; provides processing and handling safety, excellent dispersion, uniform cures.
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Poly-Dispersion TRD-90
90% red lead oxide in an EPDM/EVA binder
Rhein Chemie Corporationï |
Sp.gr. 4.58; orange slabs
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Preferably used as an activator in acid resistant compounds. It considerably reduces the swelling of vulcanizates in water; is suitable as an oxidizing agent for the vulcanization of butyl rubber with p-quinone dioxime; can be used to improve the heat resistance in peroxide cured CPE compounds; is not recommended for use in thiadiazole cured CPE; filler in compounds for protective covering, because of the high absorption capacity to x-rays.
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Polydox C-80
80% CaO in a napthenic oil binder
Polychem Dispersionsï |
Sp.gr. 2.07; calcium oxide paste dispersion
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An efficient moisture absorber for all commonly used elastomers giving protection from porosity or blistering of rubber products produced in low or high-temperature cure systems.
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Polydox C-90
90% CaO, oil treated
Polychem Dispersionsï |
Sp.gr. 2.43; calcium oxide, oil treated in a powder form.
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Similar to Polydex C-80; is also used as a dessicant in vinyl plastisols
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Polyethylene Glycol EF/Enviropeg Line
Polyethylene glycol
The Dow Chemical Companyï |
Line includes Solids - Sp gr 1.22; white powder or flake PEG-E-3350, E-4000, E-6000,E-8000 and E-20,000; Melt pt.55-61°C
Semi-solids - Sp.gr. 1.13; white E-1450, E-1500, and E-2000; melt point 44-48° C Liquids - Sp.gr. 1.13 E-200, E-300, E-400, E-600, & E-1000.
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Activator used in conjunction with high surface area silicas and internal lubricant in elastomeric compounds.
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Polyethylene Glycol EF/Enviropeg Line
Polyethylene glycol
Harwick Standardï |
Line includes Solids - Sp gr 1.22; white powder or flake PEG-E-3350, E-4000, E-6000,E-8000 and E-20,000; Melt pt.55-61°C
Semi-solids - Sp.gr. 1.13; white E-1450, E-1500, and E-2000; melt point 44-48° C Liquids - Sp.gr. 1.13 E-200, E-300, E-400, E-600, & E-1000.
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Activator used in conjunction with high surface area silicas and internal lubricant in elastomeric compounds.
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Pristerene 9429
Stearic acid.
M.F. Cachatï |
Tallow based rubber grade stearic acid; titre, 52-60°C, iodine no. 11 max., acid value 192-210 and saponification value 194-212.
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Red Lead FlowSperse
90% Red Lead on different carriers
Flow Polymers LLCï |
Past or elastomeric dispersion.
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Prespersion of red lead; vulcanizer for halogenated polymers.
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Red Lead Poly Slab
90% red lead in an EPR binder
Polymericsï |
Sp.gr. 4.63; Red Lead in a rubber slab form; excellent storage stability.
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Activator for NR and SRs; excellent incorporation and dispersion; very easy handling.
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Redimix 4167 HMT-70
70% HMT in a DOP binder
HEXPOL Compoundingï |
Sp. gr. 1.20
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Dispersed form of HMT - Hexamethylenetetramine for use in natural and synthetic rubbers.
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Rhenofit 1600
Combination of urea derivatives and dispersing agent
Rhein Chemie Corporationï |
Sp.gr. approx. 1.25; light-colored aqueous paste
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Blow promoter and deodorizer as well as vulcanization activator with built-in scorch retarder.
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Rhenofit 1987
Combination of activating substances based on urea
Rhein Chemie Corporationï |
Sp.gr. approx. 1.5; white powder.
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Curing activator and promoter for reinforcing fillers
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Rhenofit 2060
Magnesium oxide in a binder
Rhein Chemie Corporationï |
Sp.gr. 3.57; light gray powder
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Curing activator and acid acceptor particularly suitable for polychloroprene rubber (CR) and adhesives. a low active magnesium oxide especially selected for the use in the rubber processing industry; improves the processing safety of rubber compounds based on CR, CSM, CM and CIIR; raises the critical temperature of basic accelerators and thus prevents scorching; for acid accelerators the activating temperature is decreased; in polymers containing chlorine, especially CR, it serves as an acidacceptor and thus improves the ageing properties of the vulcanizates; in cold cured rubber coated fabrics, it is used to neutralize acid traces; moduli are generally increased by the addition of Rhenofit 2060.
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Rhenofit 2120
Active magnesium oxide
Rhein Chemie Corporationï |
Sp.gr. 3.57; white powder
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An active magnesium oxide especially selected for the use in the rubber processing industry; improves the processing safety of rubber compounds based on CR, CSM, CM and CIIR; raises the critical temperature of basic accelerators and thus prevents scorching; In acid accelerators, the activiting temperature of acid accelerators is decreased; in polymers containing chlorine, especially CR, it serves as an acid acceptor and thus improves the aging properties of the vulcanizates; in cold cured rubber coated fabrics, Rhenofit 2120 is used to neutralize acid traces; moduli are generally increased by its addition.
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