PRODUCTS

BENZOTHIAZYL-2-DICYCLOHEXYL SULFENAMIDE (DCBS)

BENZOTHIAZYL-2-DICYCLOHEXYL SULFENAMIDE (DCBS) is a delayed action sulfenamide accelerator for use in natural and synthetic rubbers.
BENZOTHIAZYL-2-DICYCLOHEXYL SULFENAMIDE (DCBS) is recommended for applications where exceptionally long flow times are required.
BENZOTHIAZYL-2-DICYCLOHEXYL SULFENAMIDE (DCBS) is particularly suitable for rubber goods subjected to high dynamic stresses.
BENZOTHIAZYL-2-DICYCLOHEXYL SULFENAMIDE (DCBS) is a primary accelerator which can be used alone or in combination with many secondary accelerators.
BENZOTHIAZYL-2-DICYCLOHEXYL SULFENAMIDE (DCBS) offers the best scorch resistance of all commonly used sulfenamide accelerators.

CAS: 4979-32-2
European Community (EC) Number: 225-625-8

IUPAC Name: N-(1,3-benzothiazol-2-ylsulfanyl)-N-cyclohexylcyclohexanamine

Molecular Formula: C19H26N2S2
Molecular Weight: 346.6 g/mol

4979-32-2, S-(Benzo[d]thiazol-2-yl)-N,N-dicyclohexylthiohydroxylamine, N,N-Dicyclohexyl-2-benzothiazolesulfenamide, N,N-Dicyclohexyl-2-benzothiazolsulfene amide, 2-BENZOTHIAZOLESULFENAMIDE, N,N-DICYCLOHEXYL-, N-(1,3-benzothiazol-2-ylsulfanyl)-N-cyclohexylcyclohexanamine, n,n-dicyclohexylbenzothiazole-2-sulfenamide, DTXSID3027584, 5OBS6299M8, Soxinol DZ, MFCD00236063, S-(Benzo[d]thiazol-2-yl)-N,N-dicyclohexyl-thiohydroxylamine, Accelerator DZ, Sulfenamid DC, Vulkacit DZ, Meramid DCH, Rhodifax 30, C19H26N2S2, EINECS 225-625-8, Dicyclohexyl-2-benzothiazylsulfenamide, BRN 0621701, UNII-5OBS6299M8, N,N-Dicyclohexylbenzothiazole-2-sulphenamide, M 181, N,N-Dicyklohexylbenzthiazolsulfenamid [Czech], N,N-Dicyklohexylbenzthiazolsulfenamid, N,N-Dicyclohexyl-2-benzothiazolesulfenam, EC 225-625-8, SCHEMBL212831, DTXCID707584, CHEMBL3186869, Tox21_301258, STK771201, AKOS001746624, NCGC00255324-01, AS-15580, SY317194, CAS-4979-32-2, CS-0155326, FT-0746821, N,N-dicyclohexyl-2-benzothiazole sulfenamide, NS00003781, D82281, 2-BENZOTHIAZOLYL-N,N-DICYCLOHEXYLSULFENAMIDE, W-106005, DICYCLOHEXYL-2-BENZOTHIAZOLESULFENAMIDE, N,N-, Q27262639, S-(2-Benzothiazolyl)-N,N-dicyclohexylthiohydroxylamine, Thiohydroxylamine, S-benzothiazol-2-yl-N,N-dicyclohexyl-, N-(1,3-benzothiazol-2-ylthio)-N-cyclohexylcyclohexanamine

BENZOTHIAZYL-2-DICYCLOHEXYL SULFENAMIDE (DCBS) is used as a post-effect accelerator for natural rubber, butadiene rubber, butylaniline, isopentyl rubber, etc. Good dispersion properties in rubber.
The scorch time in natural rubber compounds is longer than that of accelerator DIBS, so the operation safety is higher.
The vulcanization speed at vulcanization temperature is similar to that of accelerator DIBS.
The vulcanization flatness is similar to that of accelerator CZ.

The moldless steam vulcanization of the rubber containing Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is slightly faster than the flat vulcanization.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is suitable for rubber materials with large amounts of highly active reinforcing agents, and also suitable for rubber materials mainly composed of polybutadiene rubber or recycled rubber.
The mechanical properties of vulcanized rubber, especially the dynamic properties, are relatively good, and the elasticity and elongation strength are high.
Because vulcanized rubber has a bitter taste, Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is not suitable for manufacturing rubber products that come into contact with food.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is mainly used in the manufacture of tires, tapes, shock-absorbing products and backing rubber for retreading tires.

Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is a subsulfonamide accelerator with excellent anti-coke performance and delayed curing effect.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is compatible with natural and synthetic rubber, suitable for rubber belts and shock absorbers, radial tires, etc.
In particular, Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) has good adhesion to metals.

The key feature of Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS)'s structure is the presence of a sulfenamide group (S-N bond) linked to a 2-benzothiazole ring system.
The two nitrogen atoms are further connected by two cyclohexyl groups.
This structure allows Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) to interact with sulfur bridges during rubber vulcanization.

Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is very effective for use in thick cross-section molded articles.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) also is finds application where high processing temperatures are encountered or delayed cures are needed for optimum adhesion.
Total curing times are longer than with other sulfenamides, but the flow time/curing time ratio is favorable.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is also employed in conveyor belts, driving belts, shock absorbers, mountings and other intricately shaped molded goods requiring extremely long flow periods in the molding process.
The use of zinc oxide is necessary and stearic acid should be included in compounds where high modulus values are required.

Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is a white powder at room temperature.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is an organic compound not directly used in scientific research but plays a significant role in the rubber industry.

Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) possesses excellent scorching quality of sulfenamide type accelerator with very good operating safety.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is used in manufacturing of tires, rubber belts and shock absorber.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is without foul odor but bitter taste and suitable for use in natural rubber.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) has shelf life of 2 years.

Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is a flammable, difficult to ignite, yellowish solid with a faint odor that is practically insoluble in water.
Above 200 °C, the compound decomposes to form (similar to its hydrolysis) dicyclohexylamine and 2-mercaptobenzothiazole , followed by benzothiazole

N , N -Dicyclohexylbenzothiazole-2-sulfenamide is used as a vulcanization accelerator.

Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is a delayed action sulfenamide accelerator for use in natural and synthetic rubbers.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is recommended for applications where exceptionally long flow times are required.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is particularly suitable for rubber goods subjected to high dynamic stresses.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is a primary accelerator which can be used alone or in combination with many secondary accelerators.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) offers the best scorch resistance of all commonly used sulfenamide accelerators.

Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is a white powder at room temperature.

Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) may be used as an accelerator in the production of natural or synthetic rubber.

Mechanism of Action
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) acts as a vulcanization accelerator.
The proposed mechanism involves the decomposition of Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) and the formation of free radicals that promote crosslinking between rubber chains.
However, the detailed mechanistic pathway needs further investigation.

Physical state: White powder
Melting point: 99 °C
Boiling point: > 300 °C (1013 hPa)
Vapour pressure: < 7.0 x 10-5 Pa at 100°C
Water solubility: 1.9 ug/L at 25°C
Partition coefficient: noctanol/water (log value) > 4.80 at 25 °C

Solubility: Soluble in acetone, benzene & carbon tetrachloride.
Insoluble in water.
Classification: Fast - Delayed action accelerator.
Discoloration & Staining: Non staining.
At higher dosages slight discoloration.

APPLICATIONS:
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is very effective for use in thick cross-section molded articles.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) also is finds application where high processing temperatures are encountered or delayed cures are needed for optimum adhesion.
Total curing times are longer than with other sulfenamides, but the flow time/curing time ratio is favorable.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is also employed in conveyor belts, driving belts, shock absorbers, mountings and other intricately shaped molded goods requiring extremely long flow periods in the molding process.
The use of zinc oxide is necessary and stearic acid should be included in compounds where high modulus values are required.

Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is a sulfenamide accelerator with excellent anti-scorching property and delayed onset of cure.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is compatible with natural and synthetic rubbers, suitable for radial ply tire, rubber belts and shock absorber, etc.
Particularly Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) produces good adhesion to metal.

Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) used as aftereffect accelerator for natural rubber, butadiene rubber, styrene butadiene rubber and isoprene rubber.
Good dispersion in rubber.
The scorching time is longer than that of accelerator DIBS in natural rubber compound, so the operation safety is higher.
The vulcanization rate at the vulcanization temperature was similar to that of the accelerator DIBS.
The vulcanization flatness is similar to that of accelerator CZ.
The rubber compound containing this product is vulcanized with unmolded steam slightly faster than the flat vulcanization speed.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is suitable for rubber materials with large dosage of high activity reinforcing agent, and also suitable for rubber materials mainly composed of polybutadiene rubber or reclaimed rubber.
Vulcanized rubber has good mechanical properties, especially dynamic properties, high elasticity and constant elongation strength.
Because vulcanizates have a bitter taste, they are not suitable for making rubber products that come into contact with food.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is mainly used to manufacture tires, adhesive tapes, shock-absorbing products and refurbished tires.
The general dosage is 0.5-1 part and sulfur is about 2.5 parts.

Synthesis
The specific synthesis of Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is not readily available in scientific literature.
However, benzothiazole sulfenamides can be generally synthesized through the reaction of a secondary amine with 2-benzothiazolesulfenyl chloride.

Vulcanization Acceleration
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) acts as a vulcanization accelerator.
During vulcanization, Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) decomposes, releasing reactive intermediates that promote the formation of sulfur bridges between rubber chains.
The exact mechanism involves the breaking of the S-N bond in Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS), forming free radicals that attack the sulfur in the rubber and initiate crosslinking.

The overall reaction can be simplified as:

Rubber + Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) --> Vulcanized Rubber

Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is a white powder with a water solubility of 1.9 x 10-3 mg/L at 25 °C, a melting point of 99 °C at 1013 hPa and a vapour pressure of < 7.0 x 10-5 Pa at 100 °C.
A measured log Kow value of >4.8 suggests that this chemical is suspected to have a high bioaccumulation potential.
Benzothiazyl-2-Dicyclohexyl Sulfenamide (DCBS) is hydrolysed in water and its half-lives at 25 °C have been measured as 4.92 day at pH 4.0, 18.6 days at pH 7.0 and 112 days at pH 9, producing two major metabolites (dicyclohexylamine and 2-mercaptobenzothiazole)

Storage: Keep container tightly closed in a cool, dry and well-ventilated place, avoiding exposure of the packaged product to direct sunlight.
Always store in a cool (below 30°C) & dry place in single stack pallets away from direct sun light or any other heat source to avoid compaction.
Avoid exposure to acids, acidic materials / atmosphere & high humidity.