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PEROXAN BHP-70
Hydroperoxide / Polymerization / Curing / Crosslinking
tert-Butyl hydroperoxide
70%,
Solution in water
PEROXAN BHP-70 is used for the copolymerization of styrene/butadiene (SBR rubber) and acryl nitrile/butadiene/styrene (ABS rubber) as well as for the emulsion polymerization of vinylacetate, (meth-)acrylates and acrylic resins dispersions.
TDS HP
PEROXAN BHP-70 is used for the curing of unsaturated polyester resins and polymerization of styrene alkyde mixtures.
TDS UP
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PEROXAN BHP-70
Molecular weight:
CAS No.:
90.1
75-91-2
Appearance:
Peroxide assay:
Active oxygen assay:
Density at 20°C:
clear liquid
appx. 70%
appx. 12.43%
0.93 g/cm³
in chlorobenzene:
Maximum storage temperature (Ts max):
Minimum storage temperature (Ts min):
Storage stability as from date of delivery:
30°C
5°C to prevent freezing
6 months
Keep packaging tightly closed in a well ventilated place at indicated storage temperature. Keep away from reducing agents e.g. amines, acids, alkalis, heavy metal compounds (e.g. accelerators, driers, metal soaps). Never weigh out in storage room.
Oxidizing agent. Decomposes violently under the influence of heat or by contact with reducing agent. Never mix with accelerators.
Organic Peroxides are more or less stable products but will decompose under the influence of heat. To minimize a loss of quality during storage, it is important that the recommended maximum storage temperature is not exceeded. If a minimum storage temperature is given, an undesirable process such as a solidification or phase separation, is known to occur below this temperature.
|
SADT: |
80°C |
The SADT (Self Accelerating Decomposition Temperature) is the lowest temperature at which a self accelerating decomposition may occur.
|
Schlavenhorst 71 D-46395 Bocholt Germany |
Phone: +49 (0)2871 / 99 02-0 Fax: +49 (0)2871 / 99 02-50 www.pergan.com |
HPUPCL/003/0919 Page 1 of 2 |
PEROXAN BHP-70
Hydroperoxide / Polymerization / Curing / Crosslinking
Copolymerization of styrene/butadiene (SBR rubber) and acryl nitrile/ butadiene/styrene (ABS rubber):
The emulsion polymerization can be initiated through a redox mechanism at low temperatures.
Suitable reducing agents are Fe-salts, sulphites, dithionites, etc.
Temperature range: 5 to 25°C
Dosing: 0,1 to 0,3 phr
Polymerization of vinylacetate, (meth-)acrylates and acrylic resins dispersions:
The emulsion polymerization can be initiated through a redox mechanism at low temperatures.
Suitable reducing agents are Fe-salts, sulphites, dithionites, ascorbinic acid or sugar, etc.
PEROXAN BHP-70 is particularly suitable for reduction of residual monomer.
Temperature range: 50 to 80°C
Dosing: 0,1 to 0,5 phr
PEROXAN BHP-70 may be used for hot curing of UP resins at temperatures above 110°C. The use of cobalt accelerator will not decrease the kick-off temperature, therefore PEROXAN BHP-70 is not suitable for curing at ambient temperature.
Additional dosage of PEROXAN BHP-70 slows down the curing process in Ketone peroxide/Cobalt accelerator systems, and a longer gel time, longer curing time and a decrease in the peak exotherm temperature can be obtained.
Furthermore, PEROXAN BHP-70 is used in polymerization of alkyde styrene resins.
Depending on working conditions, the following peroxide and accelerator dosage levels are recommended:
PEROXAN BHP-70: 0,2 to 1,0 phr
Please refer to the material safety data sheet (MSDS) for information concerning safe storage, use and handling of PEROXAN BHP-70. This information should be thoroughly reviewed prior to acceptance of this product. The MSDS is available for downloading at www.pergan.com or through contacting Pergan directly.
|
Schlavenhorst 71 D-46395 Bocholt Germany |
Phone: +49 (0)2871 / 99 02-0 Fax: +49 (0)2871 / 99 02-50 www.pergan.com |
HPUPCL/003/0919 Page 2 of 2 |
Material Safety Data Sheets
Here you can download safety data sheets according to Regulation (EC) no. 1907/2006.
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occurring hazards, transport, safe handling and measures for prevention in case of danger