Rubber Compounding Materials
Vulcanization Materials
Activators


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Elastomag 170 Powder
Magnesium oxide
Akrochem Corp.
ï

White powder and micro pellets. sp. gr, 3.2; sa avg 170 m2/gr,; avg ps 2.2μ; shipped: 50 lb multiwall bags and PE pouches in cartons; protect from air and moisture.

For halogenated elastomers; vulcanizing and curing, activator, acid acceptor; high activity type MgO.


Elastomag 100
Magnesium oxide
H.M. Royal, Inc.
ï

White powders. sp. gr, 3.2, surface area 100m2/gm, avg, sp gr, 2.5; shipped in 50# multiwall bags and PE pouches; protect from air and moisture.

For halogenated elastomers; vulcanizing and curing; activator, acid acceptor.


Stan-Mag DS2
Magnesium oxide
Harwick Standard
ï

Sp.gr. 3.22;surface area- 165 m2g; powder

A high activity ,high surface area magnesium oxide for use as an acid acceptor in chlorinated polymers CR,CSM and CPE


Starmag CX-50
Magnesium oxide
HB Chemical
ï

Surface area 42 m2/g; iodine absorption 50 mg/g; bulk density 0.51 g/ml, fine white powder; recommended for Viton, Fluorel; med. activity because of its superior dispersion.

Excellent processing and superior dispensability.


Westco MO-140
Magnesium oxide
Western Reserve Chemical
ï

Fine white powder; surface area 45 m2/g.

Scorch retarder, curing agent and acid acceptor in polychloroprene and other chlorinated polymers.


Stan-Mag AG
Magnesium oxide
Harwick Standard
ï

Sp.gr. 3.22; surface area- 140 m2g;powder

A high activity, high surface area magnesium oxide for stabilizing chlorinated polymers- CR,CSM,and CPE


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.


Stan-Mag AG
Magnesium oxide
HEXPOL Compounding
ï

Sp.gr. 3.22; surface area- 140 m2g;powder

A high activity, high surface area magnesium oxide for stabilizing chlorinated polymers- CR,CSM,and CPE


Starmag U
Magnesium oxide
HB Chemical
ï

Surface area 145 m2/g; iodine absorption 160 mg/g; bulk density 0.43 g/ml; fine white powder

Highest activity for use in Neoprene G, W, TW types; acts as an acid acceptor in rubber and styrenic resins, CR contact adhesives; recommended for SMC thickener.


Ken-Mag
Magnesium oxide - bar form
Flow Polymers LLC
ï

Activator in bar form





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.


Akro-Mag Blue Label Bar
Magnesium oxide dispersion
Akrochem Corp.
ï

Sp.gr. 1.51; very fine dispersion; protected from loss of activity; cream color to dark tan. 3 lb bars, easy dispersing; good storage stability; all magnesium oxide is Elastomag 170 grade; highest activity type; superior protection.

Vulcanizer, activator, acid acceptor; used in polychloroprene, Hypalon; recommended at 4.0 parts/100 RHC.


Akro-Mag Green Label Bar
Magnesium oxide dispersion
Akrochem Corp.
ï

Sp.gr. 1.56; very fine dispersion; protected from loss of activity; cream color to dark tan 3lb. poly wrapped bars; easy dispersion; good storage stability; slightly less active magnesium oxide than Akro-Mag yellow bar.

Vulcanizer, activator, acid acceptor; used in polychloroprene, Hypalon; recommended at 4.0 parts/100 RHC.


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


Struktol WB 900A
Magnesium oxide dispersion
Struktol Company of America, LLC
ï

Specific gravity: 2.09, magnesium oxide: 75+/-1, appearance: tan bead

Struktol metal oxide preparations may be used in rubber compounds where the dispersion of untreated metal oxides gives rise to problems; they reduce sticking to the rotor blades and mill rolls; WB 900A provides protection against humidity and carbon dioxide.; reduces the scorch risk of polychloroprene compounds.


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.


MgO, Sovsperse
Magnesium oxide, various active contents on proprietary binder
Flow Polymers LLC
ï

Pellets or slabs

Activator, acid receptor and stabilizer for CR, CSM, chlorinated IIR, chlorinated PE and fluoroelastomers.


Struktol Zinc Stearate
Manufactured from a high quality technical grade stearic acid in a tightly controlled production operation that guarantees product uniformity.
Struktol Company of America, LLC
ï

Appearance: Three forms are available bead, pastille, and powder; zinc stearate bead is a free-flowing spray-dried microbead; the pastille is lens-shaped and approximately 1/8 inch in diameter; the bead and pastille are relatively new product forms in the industry; they have the major advantage of being essentially dust-free during handling, in contrast to powder forms; in all other aspects, the properties are equivalent to the standard stearates being used in the plastic and rubber industries.

Serves primarily as a lubricant, but also as a densifying agent and a partitioning agent; used extensively in color concentrates as a dispersion aid; used to improve processing of the styrenics and polyesters, and to a lesser extent with the olefins; In rubber applications, it functions as an elastomer processing aid and release agent.


Stan-Mag Mini Beads
Medium light calcined, high activity magnesium oxide in a paraffinic oil binder system
HEXPOL Compounding
ï

Sp.gr. 1.80; small bead form; 65% activity.

Pre-wet form which is non-dusty, free flowing and protected from the deleterious affects of humidity; use for rapid dispersion in halogenated polymers as an acid acceptor, scorch protector and curative.


Stan-Mag Mini Beads
Medium light calcined, high activity magnesium oxide in a paraffinic oil binder system
Harwick Standard
ï

Sp.gr. 1.80; small bead form; 65% activity.

Pre-wet form which is non-dusty, free flowing and protected from the deleterious affects of humidity; use for rapid dispersion in halogenated polymers as an acid acceptor, scorch protector and curative.





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Suppliers listed
on this page

Akrochem Corp.

H.M. Royal, Inc.

Harwick Standard

HB Chemical

Western Reserve Chemical

Premier Magnesia, LLC

HEXPOL Compounding

Flow Polymers LLC

Rhein Chemie Corporation

Struktol Company of America, LLC

     

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