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Rubber Accelerator TMTM
Specification:
Description:
Chemical Name:
Tetramethyl thiuram monosulfide
CAS NO:
97-74-5
NO.
Item
Unit
Specification
1
Appearance
-
Light-yellow powder
2
Initial M.P. (Min)
°C
104.0
3
Loss on drying (Max)
%
0.40
4
Ash (Max)
5
Residue on 63µm sieve (Max)
0.50
(*): Upon customer\'s request
Properties:
No odor or taste. Specific gravity: 1.37--1.40. Soluble in chloroform, acetone, benzene, toluene, carbon disulfate; Insoluble in water and gasoline.
Application:
Generally used as a secondary accelerator or as a booster for sulphenamides to achieve faster cure rate. Distinguished by very good processing safety in comparison with other thiurams, high curing activity and no discoloration. No cure actinty in the absence of added elemental sulphur. An excellent accelerator for polychloroprene in association with DPG and Sulphur.
Storage:
Keep container tightly closed in a cool, well-ventilated place. The recommended max. storage life is 2 years when stored under normal conditions.
Packaging:
25kg bag.
Rubber Accelerator TMTD
Tetramethyl thiuram disulfide
137-26-8
White powder
142.0
0.30
Residue on 150µm sieve (Max)
0.10
No odor and poison. Irritating to the skin and the respiratory tract. Specific gravity: 1.38--1.44. Soluble in chloroform, acetone, benzene; hardly soluble in carbon tetrachloride, ethyl alcohol & insoluble in water or gasoline.
Can be used as a single accelerator, as a secondary accelerator or as a sulphur donor in most sulphur-cured elastomers. Scorchy and gives fast cure rates. Produces an excellent vulcanisation plateau with good heat aging and compression set resistance In sulphurless and EV cure systems. Good color retention is obtained in non-black vulcanisation. A valuable secondary accelerator for EPDM. May be used as a retarder in the vulcanisation of polychloroprene rubber with ETU.
Rubber Accelerator TBBS(NS)
N-tert-butyl-2-benzothiazyl sulfenamide
95-31-8
Grayish-white
granule
Residue on 150um sieve (Max)
Grey or light yellow in color with bitter taste and slight odor. Specific gravity: 1.26--1.32, Soluble in ethanol, carbon tetrachloride, acetone, benzene, carbon disulfate, chloroform; Hardly soluble in gasoline and insoluble in water. It is not hygroscopic.
Provides fast cure rate and high modulus development in NR, SBR, BR and blends. Normally used alone or with small quantities of ultra Accelerators in tire compounds or industrial rubber products.
Keep container tightly closed in a cool, well-ventilated place. The recommended max. storage life is 1 year when stored under normal conditions.
Rubber Accelerator MBTS
Dibenzothiazole disulfide
120-78-5
165.0
Residues on 150µm sieve (Max)
A little bitter taste. Specific gravity: 1.50--1.59. Soluble in chloroform, toluene, benzene, carbon tetrachloride. Insoluble in water and ethyl alcohol.
Given flat, moderately fast cures in NR and SR. Also used in a wide range of general purpose rubber. Non-staining/non-discolouring in "white" socks; use as a plasticiser and/or retarder in polychloroprene rubber. Secondary acceleration is usually required for synthetic polymers. Better scorch safety than MBT.
20kg bag.
Rubber Accelerator MBT
2-Mercaptobenzothiazole
149-30-4
Yellow powder
170.0
Slightly foul odor and bitter taste, nonpoisonous. Specific gravity: 1.46-1.52.Soluble in ethyl acetone, acetone, dilute solution of sodium hydroxide and sodium carbonate, ethyl alcohol. Not easily soluble in benzene. Insoluble in water and gasoline.
Used for NR, IR, SBR, NBR, HR and EPDM.One of the mainly used acidic accelerators currontly and a medium fast primary accelerator. Imparts excellent aging properties, when used both alone and in combination with DM, TMTD and many others, mainly basic accelerators for higher activity. But care should be taken because it has a slight tendency to scorch. Unsuitable for use in the manufacture of food contact materials. Mainly used in the manufacture of tires, tubes, footwear, rubber belts and hoses etc.
Rubber Accelerator DPG
Diphenyl guanidine
Molecular Formula
C13H13N3
Molecula structure
Molecula weight
211.27
102-06-7
Grayish-white powder
144.0
No odor or poison. Specific gravity:1.13--1.23. Soluble in chloroform, toluene benzene and ethanol; Insoluble in gasoline and water. Not hygroscopic.
Used as a secondary accelerator with thiazoles and sulphenamides in NR and SBR compounds. Exhibits better storage stability compared to thiuram and dithiocarbamates but is not so active. DPG can be used in latex as secondary gelling agent (foam stabilizer) in the silico-flouride foam process.
Keep container tightly closed in a cool, well-ventilated place. The recommended maximum storage life is 2 years when stored under normal conditions.
25kg/bag.
Description: Rubber Accelerator CBS(CZ)
N-Cyclohexyl-2-benzothiazole sulfenamide
MolecularFormula:
C13H16N2S2
Molecular Structure
Molecular weight
264.4
95-33-0
Grayish-white powder, granule
98.0
Residues on 150m sieve (Max)
A slight odor. Specific gravity: 1.26--1.31. Soluble in benzene, chloroform, carbon disulfide; Insoluble in water.
A medium fast primary accelerator suitable for NR, IR, SBR, NBR, HR and EPDM. An outstanding delayed action accelerator. Be top effective and safe when used at ordinary processing temperatures, causing no scorches. Vulcanized show excellent physical property and quick complete. Usually used alone, when activated by DPG, TMTD and TMTM.
