Rubber Compounding Materials
Vulcanization Materials
Activators


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Actafoam R3
Fatty acid salts dispersion
Chemtura
ï

Sp.gr. 1.05; amber liquid; lead free; for use in FDA approved applications.

Activator-stabilizer for foamable thermoplastic compounds; replacement for a portion of the normal zinc oxide level in sponge rubber compounding.


Activator Dispersions - Taber brand
Various activators
Taber Inc.
ï

Paste, polymer masterbatches and netted powders of activators; compatibags, slabbed and/or pellitized masterbatches.

Consistent dispersion to improve processing.


Actone
Surface coated urea
Parabor Industria E Comercio de Produtos Quimicos LTDA
ï

Fine white powder; sp. gr. 1.32; slightly hygroscopic.

Activator for blowing agents; reduces odor of DNPT blowing agents; activator for MBT, MBTS and dithiocarbamates.


Akrochem 9930 Zinc Oxide Transparent
Precipitated basic zinc carbonate
Akrochem Corp.
ï

White powder; sp. gr. 3.5; 99% through 200 mesh.

Accelerator, activator of extremely fine particle size; particularly useful for transparent and translucent rubber articles (NR and SR); acid acceptor in CR adhesive where transparency is required; very good dispersion characteristics.


Akrochem E-9347 Urea OT
Oil treated urea
Akrochem Corp.
ï

Sp.gr. 1.30; free flowing white powder, mp 129-134°C; slight water solubility.

Blow promoter for nitrogen blowing agents; also a cure activator for thiazole accelerators in CR, IIR, NBR, NR and SBR.


Akrochem Oleic Acid
Primarily cis-9-octadecenoic acid (oleic)
Akrochem Corp.
ï

Oyster white liquid; sp.gr. 0.90

Utilized as an activator, plasticizer in NR and SR where color or clarity are not critical; typical loading 2-10 phr.


Akrochem PEG 3350
Polyethylene glycol
Akrochem Corp.
ï

White flakes; sp.gr. 1.20; melt point 130°F; soluble in water

As an activator for silica/mineral filled compounds; aso as a process aid/lubricant; typical dosages 1.5 to 3.0 phr; higher levels are used to add polarity to mircrowave-cured EPDMs.


Akrochem RG (Untreated) Zinc Oxide
Zinc oxide
Akrochem Corp.
ï

Sp.gr. 5.6; primary zinc oxide; odorless, non-toxic, fine white powder.

NR, SR, latex activator, reinforcer, good inorganic color; add directly to rubber, as water dispersion to latex.


Akrochem RGT (Treated) Zinc Oxide
Zinc oxide surface treated with proprionic acid
Akrochem Corp.
ï

Sp.gr. 5.6; primary zinc oxide; odorless, non-toxic, fine white powder.

NR, SR activator reinforcer, good inorganic color; add directly to rubber, easy dispersing.


Akrochem Stearic Acid-Rubber Grade (RG)
Stearic acid
Akrochem Corp.
ï

Titer 52-64°C; iodine value 10 max.; acid no. 193-213; saponification no. 193-214; Gardner color 10 max.

Dispersing agent and accelerator activator in rubber compounds.





Akrochem Stearic Acid-TP
Mixture of stearic and palmitic acids
Akrochem Corp.
ï

White flakes; sp.gr. 0.85; iodine <1; Gardner color <1.

High purity triple pressed (TP) stearic acid used in rubber compounding as an activator; excellent color, low iodine; plasticizer, process aid and internal/external lubricant.


Akrochem Zinc Oxide 35
Precipitated zinc oxide
Akrochem Corp.
ï

White to light yellow powder; sp.gr. 5.6; surface are 35 m2/gram.

Effective activator of extremely fine particle size; use in NR, SR and latex applications; high activity permits 20-30% reduction in loading compared to regular zinc oxide; useful in transparent and translucent rubber articles; crosslinking agent for CR and XNBR.


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.


Akrosperse Pb3O4-90/ECO/S (Akrosperse D-198)
Red Lead in ECO
Akrochem Corp.
ï

90% active.

Easy and safer handling; used primarily as ECO acid acceptor.


Akrosperse PbOMC-90/EPR/S (Akrosperse D-190)
Calcined litharge in EPR
Akrochem Corp.
ï

90% active MB in slab form.

NR and SR cure activator/acid acceptor in CSM.


Akrosperse PbOMC-90/PIB/S
Calcined litharge in PIB
Akrochem Corp.
ï

90% active in polyisobutylene binder, MB in slab form.

NR and SR cure activator.


Akro-Zinc Bar 85
Zinc oxide dispersion
Akrochem Corp.
ï

Sp.gr. 3.60, zinc oxide 85%; 6 lb. bar; 54 lb carton.

Use in place of zinc oxide powder on a part for part basis; use for applications where a pre-wetted product is desirable; G type Neoprenes where addition of zinc oxide late in mix is indicated; low hardness compounds where zinc oxide dispersion is amust.


BIK-OT
Surface-coated urea
Chemtura
ï

Sp.gr. 1.31; fine, white powder; mp, 129-134°C; good storage stability under normal conditions; somewhat hydroscopic.

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.


Bostex 422
Aqueous dispersion of zinc oxide
Akron Dispersions, Inc.
ï

Off white liquid; total solids 59.5-63.5%; pH - 9.0-11.0.

A 60% aqueous dispersion of a conventional activator for accelerator systems used in natural and synthetic latices.





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Suppliers listed
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Chemtura

Taber Inc.

Parabor Industria E Comercio de Produtos Quimicos LTDA

Akrochem Corp.

Akron Dispersions, Inc.

     

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