Rubber Compounding Materials
Vulcanization Materials
Activators


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Desical
80% calcium oxide in a naphthenic oil binder system
Harwick Standard
ï

Sp.gr. 2.10; liquid

Dispersion provides rapid incorporation into liquid systems, such as vinyl plastisols, and eliminates porosity due to moisture related blistering; used for pressureless and fusion processes for plastics.


Desical
80% calcium oxide in a naphthenic oil binder system
HEXPOL Compounding
ï

Sp.gr. 2.10; liquid

Dispersion provides rapid incorporation into liquid systems, such as vinyl plastisols, and eliminates porosity due to moisture related blistering; used for pressureless and fusion processes for plastics.


D-B-A Accelerator
Dibenzylamine-monobenzylamine blend
Chemtura
ï

Sp.gr. 1.01; pale-yellow free flowing liquid; good storage stability.

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.


Daewoon
Zinc oxide
Intertex World Resources, Inc.
ï

Low purity, low cost transactivated zinc oxide.

General purpose rubber applications.


Cri-Ox-50
50% dispersion of calcium oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 2.11±.05; solubility - esters and ketones; appearance - opaque, off-white, slab.

Used at the 4-10 part level in fluorocarbon elastomer compounding.


Cri-Mag-M-40
40% dispersion of low activity magnesium oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 2.04±.05; solubility - esters and ketones; appearance - dark brown, chopped. or slab

Used at the 30-40 part level in fluorocarbon elastomer compounding.


Cri-Mag-H-40
40% dispersion of high activity magnesium oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 2.04±.05; solubility - esters and ketones; appearance - dark brown, chopped or slab

Used at the 6-10 part level in fluorocarbon elastomer compounding.


Cri-FDA-45-1/1
45% disp. of codex food grade calc. hydroxide and mag. oxide in a 1/1 ratio on a fluoroelastomer base
Cri-Tech
ï

Sp. gr. 1.98±.05; solubility - esters and ketones; appearance - opaque, brownish, chopped or slab.

Used at the 10-20 part level in fluoroelastomer compounding for consistent rheology and excellent dispersion.


Cri-C-50
50% dispersion of calcium hydroxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 1.88±.05; solubility - esters and ketones; appearance - opaque, yellow, chopped or slab.

Used at the 6-12 part level in fluorocarbon elastomer compounding.


Cri-Act-45-LV
45% dispersion of a 2/1 ratio of calc. hydroxide and mag. oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 1.96±.05; solubility - esters and ketones; appearance - opaque, brownish yellow, chopped or slab.

Used at the 10-20 part level in fluoroelastomer compounding for consistent rheology and excellent dispersion; for use in low viscosity compounds.





Cri-Act-45 1/1
45% dispersion of a 1/1 ratio of calc. hydroxide and mag. oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 1.98±.05; solubility - esters and ketones; appearance - opaque, brownish yellow, chopped or slab.

Used at the 10-20 part level in fluoroelastomer compounding for consistent rheology and excellent dispersion.


Cri-Act-45
45% dispersion of a 2/1 ratio of calc. hydroxide and mag. oxide on a fluorocarbon elastomer base
Cri-Tech
ï

Sp.gr. 1.92 ±.05; solubility - esters and ketones; appearance - opaque, brownish, chopped or slab.

Used at the 10-20 part level in fluoroelastomer compounding for consistent rheology and excellent dispersion.


CR-4USP-2
Zinc oxide
Harwick Standard
ï

High purity, French process USP Grade sp.gr. 5.6

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber


CR-4G
Zinc oxide
Harwick Standard
ï

High purity French process, white granule/pellet sp.gr 5.6; medium particle size, medium surface

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber; pellet grade provides less dust


CR-420
Zinc oxide
Harwick Standard
ï

High purity French process, white powder sp.gr 5.6; small particle size, high surface and surface treated with propionic acid

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber; treated grade provides easier, faster incorporation


CR-42
Zinc oxide
Harwick Standard
ï

High purity French process, white powder,sp.gr 5.6; small particle size and high surface area available with surface treatment (CR-420)

For natural and synthetic rubbers and latices as cure activator where high reactivity and high purity are required.


CR-40
Zinc oxide- treated
Harwick Standard
ï

High purity French process, white powder, sp.gr.5.6; medium particle size and medium surface area, surface treated with propionic acid

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber; surface treatment provides easier, faster incorporation.


CR-4
Zinc oxide
Harwick Standard
ï

High purity French process ,white powder, sp.gr. 5.6; medium particle size and medium surface area; available with surface treatment (CR-40)

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber.


CR-30
Zinc oxide
Harwick Standard
ï

High purity French process , white powder, sp.gr 5.6;large particle size,low surface area and treated with propionic acid

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber; surface treated grade provides easier, faster incorporation.


CR-3
Zinc oxide
Harwick Standard
ï

High purity French process , white powder, sp.gr 5.6;large particle size,low surface area ; also available with surface treatment CR-30

For natural and synthetic rubbers and latices as cure activator and/or vulcanizer; add directly to rubber





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Harwick Standard

HEXPOL Compounding

Chemtura

Intertex World Resources, Inc.

Cri-Tech

     

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