Rubber Compounding Materials
Vulcanization Materials
Activators


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Starmag 150
Magnesium oxide
HB Chemical
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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.


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.


Mastermix MgO L 5881 Slab-40
40% low activity magnesium oxide in an FKM (genuine Viton) binder.
HEXPOL Compounding
ï

Sp. gr. 2.03.

Dispersed form of a low activity magnesium oxide typically used for general-purpose diamine cured FKM compounds.


Mastermix Activator (Caytur 4) 4961 Slab-70
70% Caytur 4 in an EPR binder
HEXPOL Compounding
ï

Sp. gr. 1.39

Dispersed form of Caytur 4 - Partial complex of zinc chloride with 2,2'-dibenzothiazyl disulfide (MBTS) for use in natural and synthetic rubbers.


PolyBound 463 Mag Oxide-70
70% magnesium oxide encapsulated in proprietary binder
HEXPOL Compounding
ï

Sp. gr. 1.83; crumb

Polymer bound powder form of MgO easy to handle; dust free form incorporates rapidly during mixing.


Redimix 4167 HMT-70
70% HMT in a DOP binder
HEXPOL Compounding
ï

Sp. gr. 1.20

Dispersed form of HMT - Hexamethylenetetramine 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 Hexa 4165 Slab-70
70% Hexa in an EPR binder
HEXPOL Compounding
ï

Sp. gr. 1.15

Dispersed form of HMT - Hexamethylenetetramine for use in natural and synthetic rubbers.


Mastermix Hexa 4924 Paste-60
60% Hexa in a DOP binder
HEXPOL Compounding
ï

Sp. gr. 1.30

Dispersed form of HMT - Hexamethylenetetramine for use in natural and synthetic rubbers.


Mastermix MgO H 2229 Slab-40
40% high activity magnesium oxide in an FKM binder.
HEXPOL Compounding
ï

Sp. gr. 2.05

Dispersion of high activity magnesium oxide for use in general-purpose bisphenol cured FKM compounds.





Mastermix Zinc Oxide 6182 Paste-60
60% Zinc Oxide in a DOTP binder
HEXPOL Compounding
ï

Sp. gr. 1.96

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


Mastermix Stan-Mag 5224 Paste-60
60% Stan-Mag in a TOTM binder
HEXPOL Compounding
ï

Sp.gr. 1.69

Dispersed form of a High Activity Magnesium Oxide for use in natural and synthetic rubbers.


Mastermix Magnesium Hydroxide 4901 Cube-65
65% Magnesium Hydroxide in a CPE binder
HEXPOL Compounding
ï

Sp. gr. 1.65

Dispersed form of Magnesium Hydroxide for use in natural and synthetic rubbers.


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 4872 Slab-85
85% Zinc Oxide in an EPDM binder
HEXPOL Compounding
ï

Sp. gr. 3.06

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


Mastermix Bismate 4817 Slab-75
75% Bismate in an EPDM binder
HEXPOL Compounding
ï

Sp. gr. 1.53

Dispersed form of Bismate for use in natural and synthetic rubbers.


Mastermix HMT 402 Paste-70
70% HMT in an aromatic oil
HEXPOL Compounding
ï

Sp. gr. 1.21

Dispersed form of HMT - Hexamethylenetetramine for use in natural and synthetic rubbers.


DLP 1073 SR-231-55MP3
55% SR-231 on a carrier
HEXPOL Compounding
ï

Sp. gr. 1.11

Pelletized version of the SR-231 liquid - Diethylene glycol dimethacrylate. Easier to handle, weigh and incorporate. Carrier is LLDPE.


DLP 1050 DEG-72A
72% DEG on a carrier
HEXPOL Compounding
ï

Dry Liquid Powder - free flowing version of the DEG - Diethylene Glycol liquid. Easier to handle, weigh and incorporate into NR and SR compounds.


DLP 1072 DEG-72A
72% DEG on a carrier
HEXPOL Compounding
ï

Sp. gr. 1.27

Dry Liquid Powder - free flowing version of the DEG - Diethylene Glycol liquid. Easier to handle, weigh and incorporate into NR and SR compounds.





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