Rubber Compounding Materials
Vulcanization Materials
Activators


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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 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.


Mastermix Zinc Oxide 5090 Slab-85
85% Zinc Oxide in an EPDM binder
HEXPOL Compounding
ï

Sp. gr. 3.10

Dispersed form of medium surface area zinc oxide for use in natural and synthetic rubbers.


Mastermix MgO H 5901 Slab-40
40% high activity magnesium oxide in an FKM (genuine Viton) binder.
HEXPOL Compounding
ï

Sp. gr. 2.07.

A pre-dispersed form of high activity magnesium oxide typically used as an acid acceptor in the curing of FKM compounds.


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


Mastermix CalMag 5903 Slab-45
45% active 2:1 blend of calcium hydroxide and magnesium oxide in an FKM (genuine Viton) binder.
HEXPOL Compounding
ï

Sp. gr. 1.94.

A convenient dispersed blend of activators for FKM compounds.


Mastermix Zinc Oxide 5118 Slab-90
90% Zinc Oxide in an EPR binder
HEXPOL Compounding
ï

Sp. gr. 3.75

Dispersed form of a high surface area zinc oxide for use in natural and synthetic rubbers.


Mastermix Zinc Oxide 4932 Paste-60
60% Zinc Oxide in a PIB binder
HEXPOL Compounding
ï

Sp. gr. 1.80

Dispersed form of medium surface area zinc oxide for use in natural and synthetic rubbers.


Mastermix Zinc Oxide 5539 Paste-70
70% Zinc Oxide in a DUP binder
HEXPOL Compounding
ï

Sp. gr. 2.27

Dispersed form of medium surface area zinc oxide for use in natural and synthetic rubbers.





Mastermix Zinc Oxide 5223 Paste-80
80% Zinc Oxide in a TOTM binder
HEXPOL Compounding
ï

Sp. gr. 2.89

Dispersed form of medium surface area zinc oxide for use in natural and synthetic rubbers.


Mastermix Zinco 4910 Bar-90
90% Zinc Oxide
HEXPOL Compounding
ï

Sp. gr. 3.57

Dispersed form of medium surface area zinc oxide for use in natural and synthetic rubbers.


Mastermix Zinc Oxide 5169 Slab-80
80% Zinc Oxide in an EPDM binder
HEXPOL Compounding
ï

Sp. gr. 2.68

Dispersed form of medium surface area zinc oxide for use in natural and synthetic rubbers.


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

Sp.gr. 2.24; paste

A premium paste dispersion for rapid mixing in rubber compounds; a cure activator; eliminates porosity due to moisture related blistering; used in low pressure or pressureless continuous curing of rubber extrusion products such as automotive weatherseals and pipe insulation.


Mastermix Zinc Oxide 4625 Paste-55
55% Zinc Oxide in napthenic oil
HEXPOL Compounding
ï

Sp. gr. 3.06

Dispersed form of medium surface area zinc oxide for use in natural and synthetic rubbers.


PolyBound 357 MgO DS-2-80
80% Mag Oxide encapsulated in a proprietary binder
HEXPOL Compounding
ï

Sp. gr. 2.13

Polymer bound powder form of mag oxide; dust free form incorporates rapidly during mixing.


Mastermix Zinc Oxide 4849 Slab-90
90% Zinc Oxide in an EPR binder
HEXPOL Compounding
ï

Sp. gr. 3.73

Dispersed form of medium surface area zinc oxide for use in natural and synthetic rubbers.


Mastermix Zinc Oxide 5318 Pellet-85
85% Zinc Oxide in an EPR binder
HEXPOL Compounding
ï

Sp. gr. 3.11

Dispersed form of medium surface area zinc oxide for use in natural and synthetic rubbers.


Mastermix Zinc Oxide 5350 Pellet-85
85% Zinc Oxide in an EPDM binder
HEXPOL Compounding
ï

Sp. gr. 3.10

Dispersed form of medium surface area zinc oxide for use in natural and synthetic rubbers.


DLP 1035 SR-350E-30K
30% SR-350E on a carrier
HEXPOL Compounding
ï

Sp. gr. 1.82

Dry Liquid Powder - free flowing version of the SR-350E liquid - TMPTMA - Trimethylolpropane Trimethacrylate. Easier to handle, weigh and incorporate into NR and SR compounds.





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