Rubber Compounding Materials
Vulcanization Materials
Activators


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Polydex E(ZNO)85

Polychem Dispersions
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Sp.gr. 3.05; fine particle French process zinc oxide in a soft rubber slab; shipped in 50# boxes.

Used where batch to batch uniformity and excellent dispersion is essential; for mill or mixer addition.


Polydex PPD(ZNO)75
75% zinc oxide in light process oil
Polychem Dispersions
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Sp.gr. 2.43; zinc oxide in a paste form.

Paste form for better incorporation in soft compounds or for late mixer additions.


Ultra (ZNO) 88
88% zinc oxide treated with a proprietary polymeric binder
Polychem Dispersions
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Sp.gr. 3.50; shipped 50 lb. bags.

Semi dustless and free flowing powder.


Zinc Oxide Ultra 88
88% zinc oxide treated with a proprietary polymer binder
Polychem Dispersions
ï

Sp.gr. 3.50; semi dustless and free flowing powder.

Activator for polymer cure systems; used to speed the incorporation of zinc oxide in mill or mixer compounds.


Polydox C-80
80% CaO in a napthenic oil binder
Polychem Dispersions
ï

Sp.gr. 2.07; calcium oxide paste dispersion

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.


Polydox C-90
90% CaO, oil treated
Polychem Dispersions
ï

Sp.gr. 2.43; calcium oxide, oil treated in a powder form.

Similar to Polydex C-80; is also used as a dessicant in vinyl plastisols


Zinc Oxide Poly Slab
85% French process zinc oxide in an EPR binder
Polymerics
ï

Sp.gr. 3.38.

Activator for natural and synthetic rubber; excellent incorporation and dispersion; very easy handling.


Red Lead Poly Slab
90% red lead in an EPR binder
Polymerics
ï

Sp.gr. 4.63; Red Lead in a rubber slab form; excellent storage stability.

Activator for NR and SRs; excellent incorporation and dispersion; very easy handling.


DOTG Poly Slab
75% EPR binder
Polymerics
ï

Sp.gr. 1.09; pellet or slab.

Predispersed activator for thiazoles; better processing safety than DPG.


Magox Premium
Magnesium oxide
Premier Magnesia, LLC
ï

Odorless, high surface area, non-toxic white powder; available in bulk or 50 lb. poly-lined bags.

For CR, CSM, PE, NBR, polysulfides; vulcanizing agent; activator; acid acceptor; useful in adhesives and polyester sheet molding compounds.





Nickle Dimentyl dithiocarbamate (NDMC)

Rhein Chemie Corporation
ï

See also Curebead PB(NDMC)-70


PLC(SR517)-72
72% SR517
Rhein Chemie Corporation
ï

Sp.gr. 1.26; free flowing dust suppressed powder on an inert carrier.

PLC(SR517)-72 is a replacement for other SR517 liquids sould be evaluated as a direct replacement on an active ingredient basis; the improved handling and reduced waste can reduce raw material requirements


Mag-Beads
Magnesium oxide beads
Rhein Chemie Corporation
ï

Sp.gr. 1.76; odorless, tan, free-flowing beads in high flash organic binder.

For CR, CSM, PE, NBR, polysulfides; activator, acid acceptor and vulcanizing agent; this dispersion in bead form resists hydration, handles easily and incorporates rapidly.


Poly-Dispersion ERD-90
Red Lead in an EPR binder
Rhein Chemie Corporation
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Sp.gr. 4.57; Red Lead, 90%; very fine dispersion in elastomeric slab form, scored, dusted and separated with PE.

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.


MgO

Rhein Chemie Corporation
ï

See also Mag-Paste, Mag-Beads, Rhenogran 2060, Scorchguard O, Rhenofit: 2060,2120,2150, D/A


Magnesium Oxide (MgO)

Rhein Chemie Corporation
ï

See also Mag-Paste, Mag-Beads, Rhenofit 2060, Rhenofit 2120, Rhenofit 2150, Rhenofit D/A, Rhenogran G-1, Rhenofit G-3, Rhenogran MgO-75, Scorchguard O


PLC(TEA)72
72% triethanloamine on an inert mineral carrier.
Rhein Chemie Corporation
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Sp.gr. 1.33; off-white dustless powder form

Powdered liquid concentrates are free flowing dustless powder dispersions of liquid ingredients on an inert mineral carrier.


Poly-Dispersion SR-517-50
50% Saret 517 in polymeric binder
Rhein Chemie Corporation
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Sp.gr. app. 1.12; encapsulated and protected form.

Crosslinkable; acrylic monomer, used in peroxide vulcanization to provide high hardness; promotes batch to batch cure rate uniformity.


Scorchguard "O"
Magnesium oxide dispersion
Rhein Chemie Corporation
ï

Sp.gr. 1.90; buff-gray bars; very fine dispersion, protected from loss of activity

Used in chloroprene and chlorosulfanated polyethylene; gives superior protection against scorch, at process temperatures while giving excellent acceleration and vulcanization rates at cure temperatures; further aids processing by rapid incorporationand elimination of sticking to the mixer; retarder for halobutyls


Rhenofit F
Specially treated fine CaO
Rhein Chemie Corporation
ï

Sp.gr. approx. 3.0; white powder

Cross-linking modifier and desiccant for the use in fluoroelastomers.





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