Rubber Compounding Materials
Vulcanization Materials
Activators


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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.


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.


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


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 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.


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.


Rhenogran TAC-50
50% triallyl cyanurate in polymer binder
Rhein Chemie Corporation
ï

Sp.gr. approx. 1.20, beige polymer-bound granules, problem-free dosing and mixing, excellent dispersion, fast incorporation; the bound chemical is non-dusting

Activator for the peroxide vulcanization of synthetic rubbers.


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.


Rhenofit TRIM/S
70% trimethylolpropane trimethacrylate, 30% silica
Rhein Chemie Corporation
ï

Sp.gr. approx. 1.27; white powder, non-dusting, non-staining

Crosslinking activator for the peroxide vulcanization of synthetic rubbers.





Poly-Dispersion GRD-90
90% Red Lead oxide in an ECO binder
Rhein Chemie Corporation
ï

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.


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


Rhenofit EDMA/S
70% ethylene glycol dimethacrylate, 30% silica
Rhein Chemie Corporation
ï

Sp.gr. approx. 1.25; white powder, non-dusting, non-staining

Crosslinking activator for the peroxide vulcanization of synthetic rubbers.


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.


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.


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.


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.


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.


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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