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MSDS
PEROXAN PB
Peroxyester / Polymerization / Curing / Crosslinking
tert-Butyl peroxybenzoate
98%,
Liquid
PEROXAN PB is used for the (co)polymerization of ethylene, styrene, acrylonitrile, vinylacetate, acrylates and methacrylates.
TDS HP
PEROXAN PB is used for the curing of unsaturated polyester resins.
TDS UP
PEROXAN PB is used for the crosslinking of natural rubber and synthetic rubber, as well as polyolefins.
TDS CL
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PEROXAN PB
Molecular weight:
CAS No.:
194.2
614-45-9
Appearance:
Peroxide assay:
Active oxygen assay:
Density at 20°C:
clear, colourless or light yellow liquid
min. 98%
min. 8.07%
1.04 g/cm³
in chlorobenzene:
in an EPDM compound:
Maximum storage temperature (Ts max):
Minimum storage temperature (Ts min):
Storage stability as from date of delivery:
30°C
10°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.
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Flash point: SADT: |
>SADT°C 60°C |
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The SADT (Self Accelerating Decomposition Temperature) is the lowest temperature at which a self accelerating decomposition may occur.
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Schlavenhorst 71 D-46395 Bocholt Germany |
Phone: +49 (0)2871 / 99 02-0 Fax: +49 (0)2871 / 99 02-50 www.pergan.com |
HPUPCL/004/0919 Page 1 of 2 |
PEROXAN PB
Peroxyester / Polymerization / Curing / Crosslinking
Polymerization of ethylene:
PEROXAN PB is used for high pressure polymerization of ethylene in both autoclave and tubular processes, usually in combination with other peroxides of varying degrees of activity.
Temperature range: 220 to 270°C
Light-off temperature at 2300 bar: 225°C
Polymerization of styrene:
PEROXAN PB may be used in polymerization and copolymarization of styrene.
In a mass process PEROXAN PB can be used to increase polymerization rates.
In suspension polymerization processes, PEROXAN PB is often used for reduction of residual styrene content during the final polymerization stage.
Temperature range: 100 to 140°C
Dosing: 0,02 to 0,1 phr
Polymerization of acrylates and methacrylates:
PEROXAN PB can be used as initiator for the solution, bulk and suspension (co)polymerization of acrylates and methacrylates.
Temperature range: 90 to 130°C
Dosing: 0,1 to 1 phr
Other applications:
PEROXAN PB may also be used for the (co)polymerization of acrylonitrile and vinyl acetate.
PEROXAN PB is used for the curing of unsaturated polyester resins at high temperatures.
PEROXAN PB is preferred for the curing of UP resin based hot press moulding formulations in the temperature range from 140° to 160°C.
PEROXAN PB is often times used in combination with a high reactive peroxide like PEROXAN BCC or PEROXAN MI-60 K as kicker in in formulations for pultrusion processes in the temperature range of 100° to 140°C.
In combination with a cobalt accelerator e.g. PERGAQUICK C100 (10% cobalt), PEROXAN PB is applicable for the cure of UP resins in the temperature range of 70°C and higher.
Depending on application and working conditions, the following peroxide and when applicable cobalt accelerator dosage levels are recommended:
PEROXAN PB: 1,0 to 2,0 phr
PERGAQUICK C100: 0,1 to 0,6 phr
PEROXAN PB is recommended for the crosslinking of NBR, SBR, EP(D)M, LDPE and EVA.
Rubber compounds containing PEROXAN PB have moderate processing safety in combination with a very high speed of cure.
Safe processing temperature (t2): 100°C
Typical crosslinking temperature (t90): 140°C
The safe processing temperature t2 is defined as the temperature, at which the scorch time is longer than 20 minutes. The typical crosslinking temperature t90 is defined as the temperature at which 90% of the crosslinks in the compound are formed within about 12 minutes.
Please refer to the material safety data sheet (MSDS) for information concerning safe storage, use and handling of PEROXAN PB. 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/004/0919 Page 2 of 2 |
Material Safety Data Sheets
Here you can download safety data sheets according to Regulation (EC) no. 1907/2006.
Safety Data Sheets are an important source of information on chemicals, such as identity of the product,
occurring hazards, transport, safe handling and measures for prevention in case of danger