Overview
SN-239 is a multifunctional mercaptan-modified polychloroprene rubber that exhibits medium crystallization rate. A notable feature of this material is its exceptional tear strength, which remains impressive even under conditions of high filler content or plasticization.
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White or light grey chipsShipping Port :
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International safety compliant with detailed MSDS/SDSGeneral properties
Chemical Name: 2-CHLORO-1,3-BUTADIENE POLYMERS
Grade：SN-239
CAS NO.: 9010-98-4
Molecular formula: (C4H5Cl)n
Technical Data:
|
Items |
Index |
|
Appearance |
White or light grey chips |
|
Molecular Weight |
100,000～600,000 |
|
Density |
1.23 |
|
Softening Temperature (℃) |
80 |
|
Tg(℃) |
-38～-40 |
|
Specific Heat (KJ/kg•℃) |
2.18 |
|
Volume Resistance (Ω•cm) |
109 ～1012 |
|
Crystallization Rate |
Medium |
|
Mooney Viscosity ML(1+4) 100℃ |
110-130 |
|
Mooney Scorch MS t5 (min) |
≥12 |
|
Module at 500% Elongation（MPa） |
4-8 |
|
Tensile Strength（MPa） |
≥13 |
|
Ultimate Elongation（%） |
≥650 |
|
Volatiles(wt.%) |
≤0.8 |
|
Ash(wt.%) |
≤1.0 |
Applications:
1. The primary use of SN-239 lies in its application within heavily filled compounds and in modifying the viscosity of adhesive formulations. Often, SN-239 is processed through extrusion as a hose, with notable utilization in the production of more rigid wire and cable sheaths.
2. SN-239 plays a role in the development of adhesives, particularly in the formulation of adhesive plasters.
Package:
Packed in 25kg kraft-plastic bag.
Storage:
Maintain the storage environment in a cool, well-ventilated area, shielding it from direct sunlight. An optimal temperature should be kept below 25℃.
Overview Provided that compounds are are appropriately formulated and processed, the resulting vulcanizates demonstrate excellent resistance to environmental factors such as weather and ozone. Additionally, they exhibit strong resistance to aging, hot air, and various chemicals, as well as adequate resistance to oils and gasoline. Furthermore, these materials possess favorable mechanical and physical characteristics, along with notable abrasion resistance.
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Overview SN-238 is a versatile mercaptan-modified polychloroprene rubber characterized by medium rate of crystallization. Compounds formulated with SN-238 demonstrate robust resistance to oil, chemicals, ozone, aging, sunlight, fire, and possess commendable electrical properties.
Overview SN-239 is a multifunctional mercaptan-modified polychloroprene rubber that exhibits medium crystallization rate. A notable feature of this material is its exceptional tear strength, which remains impressive even under conditions of high filler content or plasticization.
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Overview SN-242B is a chloroprene rubber that has been modified with mercaptan, characterized by its exceptional adhesive properties and fast crystallization rate. It exhibits robust resistance to ozone, environmental factors, oils, chemical deterioration, and fire.
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