Rubber Compounding Materials
Vulcanization Materials
Activators


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Poly-Dispersion GRD-90
90% Red Lead oxide in an ECO binder
Rhein Chemie Corporation
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Sp.gr. 5.18; orange slabs

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.


Poly-Dispersion TRD-90
90% red lead oxide in an EPDM/EVA binder
Rhein Chemie Corporation
ï

Sp.gr. 4.58; orange slabs

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.


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.


Calcium Oxide

Rhein Chemie Corporation
ï

See Rhenogran CaO-80, Rhenofit C, Elast-O-Sperse RS-1, FE(Ca(OH)2)-68, FE (CaO)-75 and Elast-O-Cal S-80, Elast-O-Cal 80, Elast-O-Cal 80HT, Elast-O-Cal 80FDA,Elast-O-Cal C-75, Elast-O-Cal 90, Elast-O-Cal (G-50)-90, Elast-O-Cal P-90


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.


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.


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.


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.


Rhenogran ZnO-85
84% ZnO in polymer binder
Rhein Chemie Corporation
ï

Sp.gr. approx. 3.03; white polymer-bound granules, problem-free dosing and mixing, excellent dispersion, fast incorporation; the bound chemical is non-dusting

Curing activator for the use in natural and synthetic rubbers, particularly CR.


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





Rhenogran CaO-80
80% CaO in polymer binder
Rhein Chemie Corporation
ï

Sp.gr. approx. 2.25; grey polymer-bound granules

Desiccant for rubber compounds of all kinds to prevent porosity.


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.


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.


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.


Elast-O-Cal 80FDA
80% Codex grade CaO dispersion in USP grade white
Rhein Chemie Corporation
ï

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.


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.


Rhenomag G 1
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.


Rhenogran HPCA-70
60% methyl-2-mercaptobenzimidazol and 1,8 diazabicyclo-5,4,0 undec-7-en, in a polymer binder
Rhein Chemie Corporation
ï

Sp.gr. 1.1; off white granules

Can replace MgO in polychloroprene compounds; excellent heat aging properties can be achieved; replacement of MgO in blends with HIIR compounds is possible.


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.





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