Rubber Compounding Materials
Vulcanization Materials
Activators
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Tradename
Composition
Supplier
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Properties
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Function
& Compounding
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Magnesium Oxide
Brenntag Specialties, Inc.ï |
Magnesium oxide
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Pristerene 9429
Stearic acid.
M.F. Cachatï |
Tallow based rubber grade stearic acid; titre, 52-60°C, iodine no. 11 max., acid value 192-210 and saponification value 194-212.
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Stearic Acid - Industrene
Stearic acid
R.E. Carroll Inc.ï |
White powder or flakes.
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Single, double, triple pressed.
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Actafoam R3
Fatty acid salts dispersion
Chemturaï |
Sp.gr. 1.05; amber liquid; lead free; for use in FDA approved applications.
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Activator-stabilizer for foamable thermoplastic compounds; replacement for a portion of the normal zinc oxide level in sponge rubber compounding.
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Laurex
Zinc salts of lauric and related fatty acids
Chemturaï |
Sp.gr. 1.18; tan flaked solid; mp about 107-118°C, but not definitely specified; good storage stability.
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For CR, NBR, NR, SBR and their latices; recommended for tire carcass and tread compounds, extruded stocks, proof goods; activates thiazole accelerators and their derivatives; evens out and advances curing rates of off-grade rubbers deficient in natural fatty acids. Low blooming from cured and uncured compounds; much less blooming than many other fatty acid softeners; non-discoloring; melts, disperses readily.
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D-B-A Accelerator
Dibenzylamine-monobenzylamine blend
Chemturaï |
Sp.gr. 1.01; pale-yellow free flowing liquid; good storage stability.
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For NR, SBR rubbers and latices, NR reclaim; affects air cures ranging from 24 hrs. at room temp to 20 min at 100°C; retarded by clay and other acidic materials; action with xanthates or carbon disulfide enhanced by thiazoles and thiurams; non-discoloring, non-staining; vulcanization requires zinc oxide and sulfur; fatty acids not necessary and can retard cure; can apply carbon disulfide by painting or dipping compounds thus eliminating danger of precure; for processing and applications see C-P-B.
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BIK-OT
Surface-coated urea
Chemturaï |
Sp.gr. 1.31; fine, white powder; mp, 129-134°C; good storage stability under normal conditions; somewhat hydroscopic.
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For CR, IIR, NBR, NR, SBR and EPDM; activator for nitrogen-type blowing agents; activator for thiazole, thiuram and dithiocarbamate accelerators; relatively nondiscoloring and non-staining; reduces odor-producing properties of dinitrosopentamethylene tetramine blowing agents; helps lower decomposition point of Celogen AZ and Kempore types to range normal for rubber curing.
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Zoco 102
French process zinc oxide
CMMï |
High purity, odorless, white fine powder; surface area 8.00 min.; sp. gr, 5.6; meets ASTM D79.
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NR, SR latex activator, reinforcer and hiding pigment; fast curing, excellent suspensions in latex.
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Zoco 627
French process zinc oxide
CMMï |
High quality, odorless, low dust soft pellet; propionic acid treated; surface area 4.00-6.00; sp. gr, 5.6; meets ASTM D79.
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NR, SR latex activator, reinforcer and hiding pigment; rapid incorporation and excellent dispersion; low dusting, fast cure rate.
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Zoco 604
French process zinc oxide
CMMï |
High quality, odorless, white powder; surface area 4.00-6.00; sp.gr, 5.6; meets ASTM D79.
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NR, SR latex activator, reinforcer and hiding pigment; medium cure rate.
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Zoco 600
French process zinc oxide
CMMï |
High quality, odorless, fine white powder; surface area 6.00 min.; sp. gr, 5.6; meets ASTM D79.
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NR, SR latex activator, reinforcer and hiding pigment; fast curing, excellent suspensions in latex.
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Zoco 101
French process zinc oxide
CMMï |
High quality, odorless, white fine powder; surface area 6.50-7.99; sp.gr, 5.6; meets ASTM D79.
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NR, SR latex activator, reinforcer and hiding pigment; fast curing, excellent suspensions in latex.
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Zoco 172
French process zinc oxide
CMMï |
High purity, odorless, fine white powder; propionic acid treated; surface area 4.00-5.49; sp. gr, 5.6; meets ASTM D79.
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NR, SR, latex activator, reinforcer and hiding pigment; rapid incorporation and excellent dispersion; high cure rate.
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Zoco 124
French process zinc oxide
CMMï |
Sp.gr. 5.6; French process ZnO produced from special high grade zinc; odorless, non toxic, fine white pellet; medium surface area.
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NR, SR latex activator, reinforcer and hiding pigment; low dusting, medium to fast cure rate.
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Zoco 672
French process zinc oxide
CMMï |
High quality, odorless, white powder; propionic acid treated; surface area 4.00-6.00; sp. gr, 5.6; meets ASTM D79.
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NR, SR latex activator, reinforcer and hiding pigment; rapid incorporation and excellent dispersion; fast curing.
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Zoco 100
French process zinc oxide
CMMï |
High purity, odorless, fine white powder; high surface area 5.50-6.49; sp. gr, 5.6; meets ASTM D79.
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NR, SR, latex activator, reinforcer and hiding pigment; fast curing, excellent suspensions in latex.
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Zoco 603
French process zinc oxide
CMMï |
High quality, odorless, coarse white powder; surface area 3.99 max.; sp. gr, 5.6; meets ASTM D79.
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NR, SR latex activator, reinforcer and hiding pigment; slow-medium cure rate.
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Zoco 112 USP
French process zinc oxide
CMMï |
High purity, odorless, fine white powder; surface area 4.00-5.49; sp. gr, 5.6; meets ASTM D79.
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NR, SR latex activator, reinforcer and hiding pigment; medium cure rate; high purity excellent for medical and pharmaceutical rubber applications.
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Zoco 624
French process zinc oxide
CMMï |
High quality, odorless, low dust soft pellet; surface area 4.00-6.00; sp. gr, 5.6; meets ASTM D79.
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NR, SR latex activator, reinforcer and hiding pigment; low dusting, medium to fast cure rate.
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Zoco 104
French process zinc oxide
CMMï |
High purity, odorless, fine white powder; surface area 4.00-5.49; sp. gr, 5.6; meets ASTM D79.
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NR, SR, latex activator, reinforcer and hiding pigment; medium cure rate.
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