Rubber Compounding Materials
Vulcanization Materials
Activators


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Elast-O-Cal 80FDA
80% Codex grade CaO dispersion in USP grade white
Rhein Chemie Corporation
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Sp.gr. 2.25; firm paste dispersion in a mineral oil binder (see calcium oxide)

Similar in function to Elast-O-Cal 80 except Codex grade calcium oxide is used in a binder of USP grade white mineral oil; it is designed for applications involving food and liquid contact such as potable water contacting items andfood handling belting.


Zic-Stick 'SG'
90% zinc oxide
Rhein Chemie Corporation
ï

Sp. gr. approx. 3.66; very fine particle size

Activator for NR's and SR's, vulcanizer for polychloroprene and other halogenated elastomers, superior activity.


Elast-O-Cal 80
80% CaO in hydrotreated naphthenic oil binder
Rhein Chemie Corporation
ï

Sp.gr. 2.20; firm paste dispersion in a high flash hydrotreated naphthenic oil binder (see calcium oxide)

An efficient moisture absorber for all commonly used elastomers imparting excellent protection against porosity or blistering in rubber products produced in low-pressure, high-temperature cure systems such as microwave units, LCM, hot air cures or fluidize


Rhenofit CF
Specially treated very fine Ca(OH)2
Rhein Chemie Corporation
ï

Sp.gr. approx. 2.2 white powder

Crosslinking activator for fluoro-elastomers.


Elast-O-Cal C-75
75% CaO dispersion in chlorinated paraffin
Rhein Chemie Corporation
ï

Sp.gr. 2.30; firm paste dispersion in a chlorinated paraffin binder (see calcium oxide)

A specially designed desiccant for CPE and other polymers where peroxide cure systems are utilized; it will not reduce the effectiveness of the peroxide system which does occur with naphthenic based desiccants.


Rhenofit 1600
Combination of urea derivatives and dispersing agent
Rhein Chemie Corporation
ï

Sp.gr. approx. 1.25; light-colored aqueous paste

Blow promoter and deodorizer as well as vulcanization activator with built-in scorch retarder.


PLC(TEA)72
72% triethanloamine on an inert mineral carrier.
Rhein Chemie Corporation
ï

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 T(HRL)D-90
Fine particle size litharge in an EPDM binder
Rhein Chemie Corporation
ï

Sp.gr. 4.75; litharge 90%; very fine dispersion in elastomeric slab form, scored, dusted, and separated with PE.

chlorosulfonated polyethylene stabilizer, add in first step in mixing cycle; provides processing and handling safety, excellent dispersion, uniform cures.


Poly-Dispersion ERD-90
Red Lead in an EPR binder
Rhein Chemie Corporation
ï

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.


Elast-O-Cal 90
90% calcium oxide in oil binder
Rhein Chemie Corporation
ï

Sp.gr. 2.73; off-white wetted powder

An efficient moisture absorber for all commonly used elastomers imparting excellent protection against porosity or blistering in rubber products produced in low-pressure, high-temperature cure systems such as microwave units, LCM, hot air cures or fluidized bed units.





Rhenofit 2120
Active magnesium oxide
Rhein Chemie Corporation
ï

Sp.gr. 3.57; white powder

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.


FE(CaO)-75
75% calcium oxide in Carnauba wax
Rhein Chemie Corporation
ï

Sp.gr. 2.09; free flowing bead. (see Calcium Oxide).

FE(CaO)-75 dispersion is a protected form of calcium oxide for general use in fluoroelastomer compounding; wwill improve dispersion, property consistency, and reduce mixing time; for safe handling of calcium oxide, FE(CaO)-75 should be specified.


FE(Ca(OH)2)-68
68% calcium hydroxide in Carnauba wax
Rhein Chemie Corporation
ï

Sp.gr. 1.64; free flowing bead. (see Calcium Hydroxide).

FE(Ca(OH)2)-68 dispersion is a protected form of calcium hydroxide for general use in fluoroelastomer compounding; will improve dispersion, property consistency, and reduce mixing time; for safe handling of calcium hydroxide, FE (Ca(OH)2)-6


Rhenofit 1987
Combination of activating substances based on urea
Rhein Chemie Corporation
ï

Sp.gr. approx. 1.5; white powder.

Curing activator and promoter for reinforcing fillers


Zic-Stick '85'
Zinc oxide dispersion
Rhein Chemie Corporation
ï

Sp.gr. 3.66; zinc oxide content approx 90%; very fine dispersion of highly active zinc oxide

Activator for NR and SRs; vulcanizer for polychloroprene and other halogenated elastomers; superior activity coupled with rapid complete incorporation enables 3 parts of Zic Stick 85 to replace 5 parts of zinc oxide powder in most applications.


Poly-Dispersion SR-517-50
50% Saret 517 in polymeric binder
Rhein Chemie Corporation
ï

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 2060
Magnesium oxide in a binder
Rhein Chemie Corporation
ï

Sp.gr. 3.57; light gray powder

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.


Rhenomag P 2
100% very acitve MgO in polymer binder
Rhein Chemie Corporation
ï

Sp.gr. 1.56; white pellets

Curing activator and acid acceptor, particularly suitable for CR and CM.


Rhenomag G 3
75% very acitve MgO in polymer binder
Rhein Chemie Corporation
ï

Sp.gr. 1.56; white pellets

Curing activator and acid acceptor, particularly suitable for CR and CM.





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