Amylphenol disulfide polymer
China [CN] Arkema Vultac 2,3,5 equivalent with different sulfur content and softening point.they are nitrosamine free vulcanizing agent and bleaching agent in the disproportionation of rosin or rosin esters.
Arkema Vultac 2 equivalent
Composition:Poly-tert-amylphenol disulfide 100%
Specification:
|
Item |
Standard |
Test Way |
|
Appearance |
brown tacky solid |
Visual |
|
Sulfur content, % |
21.8-23.8 |
Combustion |
|
Softening point, ℃ |
50.0-60.0 |
Ring & Ball |
|
Specific gravity @ 25℃ |
1.15 |
Typical |
|
Flash point closed up |
455℉(235℃) |
/ |
|
Viscosity at 100℃ |
1000 cP |
/ |
|
Viscosity at 135℃ |
100 cP |
/ |
|
Solubility in water |
Insoluble |
/ |
|
Solubility in organic solvents |
Soluble in toluene Insoluble in hexane |
/ |
Arkema Vultac 3 equivalent
Composition: Poly-tert-amylphenol disulfide(>95% )+sulfur(<2%)
Specification:
|
Item |
Standard |
Test Way |
|
Appearance |
Reddish-brown to dark brown pastilles |
Visual |
|
Sulfur content, % |
27.0-29.0 |
Combustion |
|
Softening point, ℃ |
78.0-93.0 |
Ring & Ball |
|
Specific gravity @ 25℃ |
1.2 |
Typical |
|
Flash point closed up |
644℉(340℃) |
/ |
Arkema Vultac 5 equivalent
Composition: Poly-tert-amylphenol disulfide(75% )+silica gel(25%)
Specification:
|
Item |
Standard |
Test Way |
|
Appearance |
Beige free flowing powder |
Visual |
|
Sulfur content, % |
20.0-22.0 |
Combustion |
|
% Passing 50 Mesh |
≥98 |
/ |
|
% Passing 20 Mesh |
≥99 |
/ |
|
Water content,% |
≤2 |
/ |
Applications:
V2 can be used as a bleaching agent in the disproportionation of rosin or rosin esters.
V3 and V5 is nitrosamie free vulcanizing & curing agent for different rubbers.
Characteristics:
Polymers: Natural rubber and synthetic elastomers. Especially good in curing rubber that contains chlorine such as chlorobutyl and polychloroprene.
Synergism: Can be used with most typical rubber accelerators and sulfur. When used as a partial replacement for sulfur, para tert amylphenol disulfide tends to improve dispersion of other additives in the rubber.
Crosslink Type: para tert amylphenol disulfide promotes mono-sulfidic crosslinks resulting in vulcanizates with excellent heat and aging resistance.
Non-nitrosamine: para tert amylphenol disulfide does not produce nitrosamines like many of the other sulfur donors such as DTDM and the thiurams.
Advantages:
Non-nitrosamine
Lower tack to make it easier to stock and handle
Lower volatility
Lower volatile degradation products
Good compatibility with many rubber polymers
Very good antioxidant properties
Improve heat age properties of vulcanizates because of its generation of mono- and di-sulfic crosslinks
Increase the resinous plasticizer during processing
Increase the green tack in NBR,BR and SBR based compounds
Improve the dispersion of other compound ingredients into rubber
Package:
V2 : 200kgs/drum
V3 and V5: 25kgs/kraft bag;25kgs/drum;25kgs/25kgs/carton box
Storage:
stock them in dry,cool(temperature within 30℃) and well ventilated place
Shelf life:
2 years if stoc as the above conditions indicated
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