Rubber Compounding Materials
Vulcanization Materials
Activators


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Stearic Acid F-1000
Stearic acid
Harwick Standard Distribution Corporation
ï

Stearic acid, 70-75%; non-toxic white powder; color (Lovibond), 10.0Y/15R; titer, 58-62C; iodine number, 6 max.; acid number,200-207; sap number, 201-208.

Rubber activator; dispersing agent; lubricant; stabilizer; processing aid; latex activator.


Stearic Acid - Industrene
Stearic acid
R.E. Carroll Inc.
ï

White powder or flakes.

Single, double, triple pressed.


Stearic Acid
Rubber grade stearic acid
The HallStar Co.
ï

Sp.gr. 0.84' white flakes, mild fat odor; non-toxic; mp, 70°C; idine no, 9.5, titre 52°C, acid number 197-209.

For NR, SRs (except IIR), latexes; activator; plasticizer; softener; gives acid-type activation; improves processing; aids filler and pigment dispersion; add directly.


Stearic Acid
Stearic acid
H.M. Royal, Inc.
ï

Sp.gr. 0.84; white powder, flakes, slabs; mild fat odor; non-toxic; mp, 126-133°F; iodine No, 0-15; mp and Iodine number both depend on purity (whether single, double or triple-pressed).

For NR, SRs, (except IIR), latexes; activator; plasticizer; softener; gives acid-type activation; improves processing; aids filler and pigment dispersion; add directly.


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.


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.


Starmag CX-150
Magnesium oxide
HB Chemical
ï

Surface area 135 m2/g; iodine absorption 145 mg/g; bulk density 0.35 g/ml; fine white powder

Excellent processing and dispersion; recommended for fluoroelastomer compounding; high activity; known for superior dispersability.


Starmag 150
Magnesium oxide
HB Chemical
ï

Surface area 135 m2/g; iodine absorption 155 mg./g; bulk density 0.35 g/ml; fine white powder

High activity for use with Neoprene and other chlorinated polymers; acts as an acid acceptor and high temperature aging improver.


Stan-Mag Products
Magnesium oxide
Harwick Standard Distribution Corporation
ï

A variety of of magnesium oxide based products in powder, bead, or bar form


Stan-Mag MLW
Lightly calcined magnesium oxide
HEXPOL Compounding
ï

Sp.gr. 3.22; surface area- 115m2/g; 98% passes 325 mesh

Medium-high activity and surface area grade used as an activator, acid acceptor and scorch protector for halogenated polymers CR, CSM and CPE





Stan-Mag MLW
Lightly calcined magnesium oxide
Harwick Standard Distribution Corporation
ï

Sp.gr. 3.22; surface area- 115m2/g; 98% passes 325 mesh

Medium-high activity and surface area grade used as an activator, acid acceptor and scorch protector for halogenated polymers CR, CSM and CPE


Stan-Mag Mini Beads
Medium light calcined, high activity magnesium oxide in a paraffinic oil binder system
Harwick Standard Distribution Corporation
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
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 DS-2 Bar
57% Magnesium Oxide
HEXPOL Compounding
ï

Sp. gr. 1.80

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


Stan-Mag DS2
Magnesium oxide
HEXPOL Compounding
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


Stan-Mag DS2
Magnesium oxide
Harwick Standard Distribution Corporation
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


Stan-Mag Bar
65% MgO in a proprietary binder
Harwick Standard Distribution Corporation
ï

Sp.gr. 1.80;bar form

Medium-high activity grade MgO used as an activator, acid acceptor and scorch protector for halogenated polymers such as CR and CSM


Stan-Mag Bar
65% Magnesium Oxide in napthenic oil
HEXPOL Compounding
ï

Sp. gr. 1.80

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


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


Stan-Mag AG
Magnesium oxide
Harwick Standard Distribution Corporation
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





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Suppliers listed
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Harwick Standard Distribution Corporation

R.E. Carroll Inc.

The HallStar Co.

H.M. Royal, Inc.

HB Chemical

HEXPOL Compounding

     

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