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SWASTIKA CONSTANT CARE
An ISO9001: 2000 Certified Company
 
Rubber Chemicals
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Product Code : Sccare-12

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Product Specification
Rubber Chemical - Antiozonants

AHB

Chemical Name/Chemical Composition :
Aniline – Heptaldehyde Condensate

Physical Appearance :
Reddish Brown Clear Liquid

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
pH   7.00 8.00
Specific Gravity   0.85 0.95

Packaging & Storage:
Packaging: 50Kgs / 170Kgs. Containers / Barrels
Storage Conditions: Store in a cool and dry place avoiding exposure to direct sun light.
Storage Life: 2 Years

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CBS

Chemical Name/Chemical Composition :
N-Cyclohexyl-2-benzothiazolesulphenamide

Physical Appearance :
Greyish White Pellets/Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point      
Initial °C 99.00  
Final °C 100.00  
Loss on Drying (60°C/2 hrs.) % - 0.50
Ash Content (760°C/2hrs.) % - 0.15
Menthol Insolubles % - 0.50
Assay % 96.00  

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place avoiding exposure to acidic fumes and moisture
Storage Life: 6 Months

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DCBS

Chemical Name/Chemical Composition :
N,N’Diccycloehxyl-2-benzothiazolesulphenamide

Physical Appearance :
Greyish White Micro-Granules / Pellets

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 99.00 -
Final °C 101.00 -
Ash Content (760°C/2hrs.) % - 0.30
Loss on Drying (60°C / 2 hrs.) % - 0.50
Cyclohexane Insolubles % - 0.50
Assay % 95.00 -

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place avoiding exposure to acidic fumes and moisture
Storage Life: 6 Months

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DPG

Chemical Name/Chemical Composition :
N, N’-Diphenylguanidine

Physical Appearance :
White to Cream Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 144.00 -
Final °C 146.00 -
Ash Content (760°C/2hrs.) % - 0.50
Loss on Drying (105 °C/2 hrs % - 0.50
Fineness (though 100 mesh) % 99.90 -
Assay % 97.00 -

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place.
Storage Life: 2 Years

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DTDM

Chemical Name/Chemical Composition :
4, 4’- Dithiodimorpholine

Physical Appearance :
White to Cream Crystalline Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 121.00 -
Final °C 123.00 -
Ash Content (760°C/2hrs.) % - 0.50
Loss on Drying (60°C/2 hrs.) % - 0.50
Assay % 95.00 -

Packaging & Storage:
Packaging: 25Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place.
Storage Life: 3 Months

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F

Chemical Name/Chemical Composition :
Thiazole Accelerators and Secondary Accelerators Blended

Physical Appearance :
Pale Yellow Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 142.00 -
Final °C 145.00 -
Ash Content (760°C/2hrs.) % - 0.75
Loss on Drying (60°C/2 hrs.) % - 0.75
Fineness (through 100 mesh) % 99.90 -

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place.
Storage Life: 2 Years

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MBS

Chemical Name/Chemical Composition :
N-Morpholino-2-benzothiazolesulfenamide

Physical Appearance :
Pale Yellow / Off-White / Light Tan Pellets

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 80.00 -
Final °C 83.00 -
Ash Content (760°C/2hrs.) % - 0.15
Loss on Drying (60°C/2 hrs.) % - 0.50
Methanol Insolubles % - 0.50
Assay % 95.00 -
Free Amine (As Morpholine) % - 0.15

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place avoiding exposure to acidic fumes and moisture
Storage Life: 6 months

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MBT

Chemical Name/Chemical Composition :
2-Mercaptobenzothiazole

Physical Appearance :
Pale Yellow Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 170.00 -
Final °C 175.00 -
Loss on Drying (105°C/2 hrs.) % - 0.50
Ash Content (760°C/2hrs.) % - 0.30
Fineness (through 100 mesh) % 99.90 -
Oil Content % 1.00 -
Methanol Insolubles % - 1.50
Assay % 95.00 -

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place.
Storage Life: 2 Years


MBTS

Chemical Name/Chemical Composition :
Dibenzothiazyldisulfide

Physical Appearance :
Pale Yellow Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 162.00 -
Final °C 168.00 -
Loss on Drying (105°C/2 hrs.) % - 0.50
Ash Content (760°C/2hrs.) % - 0.30
Fineness (through 100 mesh) % 99.90 -
Oil Content % 1.00 2.00
Free MBT % - 2.00
Assay % 93.00 -

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place.
Storage Life: 2 Years

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EPR100:
SCCARE EPR100 is an accelerator blend recommended for EPDM rubber to give very high tensile strength as compared to the conventional curing system used. It is also found to be very cost effective and has no detrimental effect on hot air ageing. Maximum phr recommended is 4.0

Compounding Example:
Formula: EPDM H-511:100, ZnO:5, Stearic Acid:1.5, HAF(N330):80,
Paraffinic Oil:25, MBTS:2, MBT:2, ZDC:1, TMTD:0.5

Properties Normal SCCARE EPR100
Accelerators As Above -
SCCARE EPR100 - 3.0
Sulphur 1.8 2.0
Rheumatic Test Report
Temperature °C 160 160
a. Scorch Time, Ts2, Mins. 1.51 1.58
b. Cure Time, Tc90, Mins. 13.21 14.54
c. T Min. in lbs 25.73 22.66
d. T Max. in lbs 113.87 95.98
     
Curing Temperature °C/Time, Mins. 160 / 14 160 / 15
a. Hardness (Shore A) 70 70
b. Tensile Strength (kg/cm²) 138 175
c. Elongation at Break (%) 420 420
Blooming Characteristic Heavy Bloom No Bloom
Mixing Cycle:
All the above rubber accelerator blends should be mixed at the last stage of mixing. It is preferred the master batch is matured for 24 hrs before adding these accelerators. Whenever applicable, sulphur can be immediately added after that. No special care is needed to mix these Accelerators.

Application:
· Microwave / Autoclave Cured Profiles
· Molded Goods
· Gasket
· Transfer Molded Products ETC…

ACCELERATOR COMPARISION CHART
Formula: EPDM H-511:100, ZnO:5, Stearic Acid:1.5, HAF(N330):80,
Paraffinic Oil:25, MBTS:2, MBT:2, ZDC:1, TMTD:0.5
Properties Normal SCCARE EPR100 EPR170
Accelerators As Above - -
SCCARE EPR 100 /170 - 3.0 4.0
Sulphur 1.8 2.0 1.8
Rheumatic Test Report
Temperature °C 160 160 160
a. Scorch Time, Ts2, Mins. 1.51 1.58 1.39
b. Cure Time, Tc90, Mins. 13.21 14.54 8.80
c. T Min. in lbs 25.73 22.66 23.2
d. T Max. in lbs 113.87 95.98 108.93
       
Curing Temperature °C/Time, Mins. 160 / 14 160 / 15 160 / 09
a. Hardness (Shore A) 70 70 72
b. Tensile Strength (kg/cm²) 138 175 183
c. Elongation at Break (%) 420 420 400
Blooming Characteristic Heavy Bloom No Bloom No Bloom


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EPR170:
SCCARE EPR170 is an accelerator blend recommended for EPDM rubber to give vulcanisate with very snappy cure, higher physical properties coupled with good scorch safety during processing. Blooming on surface, which is generally observed with EPDM products is totally avoided with SCCARE EPR170. Maximum phr recommended is 5.0

Compounding Example:
Formula: EPDM H-511:100, ZnO:5, Stearic Acid:1.5, HAF(N330):80,
Paraffinic Oil:25, MBTS:2, MBT:2, ZDC:1, TMTD:0.5

Properties Normal SCCARE EPR170
Accelerators As Above -
SCCARE EPR100 - 3.0
Sulphur 1.8 1.8
Rheumatic Test Report
Temperature °C 160 160
a. Scorch Time, Ts2, Mins. 1.51 1.73
b. Cure Time, Tc90, Mins. 13.21 9.04
c. T Min. in lbs 25.73 23.91
d. T Max. in lbs 113.87 104.45
     
Curing Temperature °C/Time, Mins. 160 / 14 160 / 10
a. Hardness (Shore A) 70 70
b. Tensile Strength (kg/cm²) 138 160
c. Elongation at Break (%) 420 440
Blooming Characteristic Heavy Bloom No Bloom

Mixing Cycle:
All the above rubber accelerator blends should be mixed at the last stage of mixing. It is preferred the master batch is matured for 24 hrs before adding these accelerators. Whenever applicable, sulphur can be immediately added after that. No special care is needed to mix these Accelerators.

Application:
· Moulded Goods
· Profiles
· Hoses
· Belts Etc…

ACCELERATOR COMPARISION CHART
Formula: EPDM H-511:100, ZnO:5, Stearic Acid:1.5, HAF(N330):80,
Paraffinic Oil:25, MBTS:2, MBT:2, ZDC:1, TMTD:0.5
Properties Normal SCCARE EPR100 EPR170
Accelerators As Above - -
SCCARE EPR 100 /170 - 3.0 4.0
Sulphur 1.8 2.0 1.8
Rheumatic Test Report
Temperature °C 160 160 160
a. Scorch Time, Ts2, Mins. 1.51 1.58 1.39
b. Cure Time, Tc90, Mins. 13.21 14.54 8.80
c. T Min. in lbs 25.73 22.66 23.2
d. T Max. in lbs 113.87 95.98 108.93
       
Curing Temperature °C/Time, Mins. 160 / 14 160 / 15 160 / 09
a. Hardness (Shore A) 70 70 72
b. Tensile Strength (kg/cm²) 138 175 183
c. Elongation at Break (%) 420 420 400
Blooming Characteristic Heavy Bloom No Bloom No Bloom


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TBBS

Chemical Name/Chemical Composition :
N-t-butyl-2-benzothizolesulfenamide

Physical Appearance :
Off-White/Greyish White Pellets / Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 105.00 -
Final °C 107.00 -
Loss on Drying (60°C/2 hrs.) % - 0.50
Ash Content (760°C/2hrs.) % - 0.50
Menthol Insolubles % - 1.00
Assay % 96.00 -

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place avoiding exposure to acidic fumes and moisture
Storage Life: 6 Months

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TBzTD

Chemical Name/Chemical Composition :
Tetrabenzthylthiuramdisulfide

Physical Appearance :
Pale Creamish Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 125.00 -
Final °C 127.00 -
Loss on Drying (105°C/2 hrs.) % - 0.50
Ash Content (760°C/2hrs.) % - 0.50
Assay % 99.90 -

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place.
Storage Life: 2 Years

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TMT

Chemical Name/Chemical Composition :
Tetramethylthiuramdisulfide

Physical Appearance :
Light Yellow to White Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 144.00 -
Final °C 148.00 -
Loss on Drying (105°C/2 hrs.) % - 0.30
Ash Content (760°C/2hrs.) % - 0.20
Fineness (through 100 mesh) % 99.98 -
Oil Content % 1.00 2.00
Free Amine (as DMA) % - 0.10
Assay % 97.00 -
Chloroform Insolubles % - 0.10

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place.
Storage Life: 2 Years


TMTM

Chemical Name/Chemical Composition :
Tetramethylthiurammonosulphide

Physical Appearance :
Yellow Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 104.00 -
Final °C 107.00 -
Loss on Drying (60°C/2 hrs.) % - 0.50
Ash Content (760°C/2hrs.) % - 0.50
Fineness (through 100 mesh) % 99.90 -

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place.
Storage Life: 1 Years

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ZDBC

Chemical Name/Chemical Composition :
Zinc-di-n-butyl dithiocarbamate

Physical Appearance :
White Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial ˚C 105.00 -
Final ˚C 108.00
-
Loss on Drying (65˚C/2hrs.) % - 0.30
Fineness (through 100 mesh) % 99.90 -
Zinc Content % 14.00 16.00
Benzene Insolubles % - 2.50
Water Extract % - 0.20
Total Solid Content % 99.50 -

Packaging & Storage:
Packaging: 20Kgs. Laminated HDPE Bags.
Storage Conditions: No Special Storage Conditions are required.
Storage Life: Indefinitely under Normal Storage Condition.

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ZDC

Chemical Name/Chemical Composition :
Zinc diethyldithiocarbamate

Physical Appearance :
White Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 178.00 -

Final

°C 179.00 -
Loss on Drying (105°C/2 hrs.) % - 0.20
Ash Content (760°C/2hrs.) % - 24.00
Fineness (through 100 mesh) % 99.90 -
Assay % 97.00 -
Zinc Content % 18.00 20.00
Benzene Insolubles % - 1.50

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place.
Storage Life: Stable Indefinitely under normal storage conditions.

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ZDMC

Chemical Name/Chemical Composition :
Zinc dimethyldithiocarbamate

Physical Appearance :
White Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 250.00 -

Final

°C 252.00 -
Loss on Drying (105°C/2 hrs.) % - 0.50
Zinc Content % 20.00 24.00
Fineness (through 100 mesh) % 99.90 -

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: No Special Storage Conditions are required.
Storage Life: Indefinitely under Normal Storage Condition.

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ZMBT

Chemical Name/Chemical Composition :
Zinc 2-mercaptobenzothiazole

Physical Appearance :
Pale Yellow Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point °C - 250.00 (Decomposes)
Loss on Drying (105˚C/2hrs.) % - 0.50

Ash Content (760°C/2hrs.)

% - 25.50
Fineness (through 100 mesh) % 99.90 -
MBT Conent % 1.50 2.50
Zinc Content % 17.50 19.50
Water Extract % - -
Total Solid Content % 99.50 2.50

Packaging & Storage:
Packaging: 50Kgs/200Kgs. Container / Barrel
Storage Conditions: Store in a cool place and away from direct sun light.
Storage Life: 6 Months

6C

Chemical Name/Chemical Composition :
N-(1,3-dimethylbutyl)-N’-phenyl-p-phenylenediamine

Physical Appearance :
Greyish Purple Pastilles

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point      
Initial °C 49.0 -
Final °C 50.0 -
Loss on Drying (60°C/2 hrs.) % - 0.50
Ash Content (760°C/2hrs.) % - 0.50

Packaging & Storage:
Packaging: 25kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place. Do not store under exposure to direct sunlight.
Storage Life: 2 Years

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SP

Chemical Name/Chemical Composition :
Mixture of Styrenated Phenols

Physical Appearance :
Pale Amber Coloured Viscous Liquid

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Viscosity cps 2000 6000
Refractive Index - 1.5990 1.6020
Specific Gravity - 1.078 1.086
Ash Content (760°C/2hrs.) % - 0.10
Loss on Drying (60 ˚C/2 hrs.) % - 1.00
Acidity (as H2SO4) % - 0.10

Packaging & Storage:
Packaging: 30Kgs. Container
Storage Conditions: Store in a cool place away from direct exposure of sun light.
Storage Life: 2 Years

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TQ

Chemical Name/Chemical Composition :
1,2-Dihydro-2,2,4-trimethyl-quinoline, Polymerised

Physical Appearance :
Light to Dark Brown Pastilles

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Softening Point °C 83.0 97.0
Loss on Drying (60°C/2 hrs.) % - 0.30
Ash Content (760°C/2hrs.) % - 0.25
Chloroform Insolubles % - 0.10
Dimer Content % 35.50 -
Bisaniline Content % - 1.00

Packaging & Storage:
Packaging: 25kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place. Do not store under exposure to direct sunlight.
Storage Life: 2 Years

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A

Chemical Name/Chemical Composition :
N-Nitrosodiphenylamine

Physical Appearance :
Yellowish / Dark Brown Flakes or Granules

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 60.00 -
Final °C 62.00 -
Ash Content (760°C/2hrs.) % - 0.10

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place avoiding exposure to direct sun light.
Storage Life: 2 Years

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FS

Chemical Name/Chemical Composition :
Formulated Quarternary Ammonium Salt

Physical Appearance :
Colourless to Pale Yellow Liquid

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
pH - 7.00 8.00
Total Solid Content % 15.00 -

Packaging & Storage:
Packaging: 50Kgs Barrels
Storage Conditions: Store in a cool and dry place avoiding exposure to direct sun light.
Storage Life: 6 Months

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M

Chemical Name/Chemical Composition :
Pentachlorothiophenol with Activating and Dispersing Aids

Physical Appearance :
Light Grey Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Ash Content (760°C/2hrs.) % 40.00 48.00
Loss on Drying (60°C/2 hrs.) % - 1.00
Fineness (though 100 mesh) % 99.95
-
Chlorine content % 25.00 31.00
Active content % 46.00 50.00

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place.
Storage Life: 2 Years

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MSB

Chemical Name/Chemical Composition :
Formulated Alpha Olefin Sulfonates

Physical Appearance :
Clear Yellowish Liquid

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Ph - 7.00 9.00
Total Solid Content % 36.00 -

Packaging & Storage:
Packaging: 50Kgs/200Kgs. Container / Barrel
Storage Conditions: Store in a cool place and away from direct sun light.
Storage Life: 6 Months

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PVI

Chemical Name/Chemical Composition :
Cyclohexylthiophthalimide

Physical Appearance :
White to Light Tan Crystalline Powder

Characteristics Unit Specification Minimum Limit Specification Maximum Limit
Melting Point - - -
Initial °C 86.00 -
Final °C 90.00 -
Loss on Drying (60°C/2 hrs.) % - 0.50
Ash Content (760°C/2hrs.) % - 0.40
Toluene Insolubles % - 0.50

Packaging & Storage:
Packaging: 20Kgs. HDPE Laminated Bags
Storage Conditions: Store in a cool and dry place. Do not store under exposure to direct sunlight.
Storage Life: 2 Years


SCCARE CCS
Surface Treated Sulphur for Improved Dispersion.

Chemical Composition:
Material : Treated Sulphur
Appearance : Yellow Powder
Ash, % : : 1.0 Max
Mesh Size : 200 Min.
Moisture, % : 1.0 Max.

Function:
Sulphur Dispersion has always been problem for rubber industry. This is particularly true for Nitrile Rubber, to some extent Polychloroprene and EPDM Rubber. SCCARE CCS has been electrically / chemically surface treated to avoid agglomeration. This electric charge allows the particles to disperse well in rubber matrix. It very effectively replaces Magnesium Carbonate Coated Sulphur.

Advantages of Using SCCARE CCS:
Avoids blooming during storage of green compound.
No formation of aggregates appears in the rubber avoiding local over cure.
Improved dispersion provides higher physical properties, both before and after ageing.
In dynamic applications it provides higher service life. E.g. in rice dehusking rollers. Due to local burning and presence of phenolic resin in the product, failure of the product can be earlier and erratic. Proper dispersion of sulphur avoids such failure.
In coloured applications, uniform dispersion of sulphur is very important, which is provided by SCCARE CCS. Due to this brown spots are not observed on the surface.

Typical Applications:
Rice Dehusking Rollers
Football Cover
Textile Cots and Aprons
LPG Tubing
Textile blankets and Rolls
Oil Seals and O Rings based on NBR.

Mixing Cycle:
SCCARE CCS treated sulphur should be mixed as usually followed for various rubbers. For Nitrile Rubber, it should be added immediately after rubber is warmed up and forms the band on the mill. For soft compounds, it can be added at the last stage of mixing. Tight nip refining will help further improvement in dispersion of SCCARE CCS.

Compounding Comparison & Guidelines:
Example No.1) Comparison of ageing properties:

Formulation: Nitrile Rubber (Medium): 100, ZnO: 5, Strearic Acid: 1, HAF: 30, Clay: 10, DOP: 10, CBS: 1.2, TMT: 0.2, Sulphur: 1.5
Rheometric Test Report at 150° C MC SCCARE CCS
a) Scroch Time, Ts2, Mins.
03.94
04.17
b) Cure Time, Tc90, Mins. 20.67 21.39
c) T Min., In LBS. 11.61 11.57
d) T Max., In LBS. 68.84 67.96
Curing Temp °C / Time Min. 150/20 150/20
a) Hardness (Shore A)
62
62
b) Tensile Strength (kg/cm²) 162 171
c) Elongation at break (%) 550 580
d) Modulus: 300% (kg/cm²) 56 48
Physical Testing After Ageing at 100 °C for 48 hrs.    
a) Hardness (Shore A)
68
67
b) Tensile Strength (kg/cm²) 144 162
c) Elongation at break (%) 410 490
d) Modulus: 300% (kg/cm²) 100 88
Compression Set at 70 °C for 48 hrs, 25% Deflection (%) 34.20 30.10

*Observation Remarks:
Better physicals are observed with SCCARE CCS over MC Sulphur.

Example No.2) Comparison of MC Sulphur with SCCARE CCS: [Cost Effective Antioxidants]
Formulation: Nitrile Rubber (Medium): 100, ZnO: 5, Strearic Acid: 1, HAF (N-330): 35, DOP: 10, CBS: 1.2, TMTD: 0.2, Sulphur: 1.5
Properties Normal MC SCCARE CCS
6-ppd
1.0
0.7
TDQ 1.0 0.5
Physical Testing Before Ageing    
Cure Temp °C (ASTM) 150 150
Cure Time, Mins. 20 20
Hardness (Shore A) 60 60
Tensile Strenght (kg/cm²) 168 176
Elongation at Break (%) 580 610
Physical Testing After Ageing at 100 °C for 70 hrs.    
a) Hardness (Shore A)
63 (+3)
63 (+3)
b) Tensile Strength (kg/cm²) 153 (-9%) 160 (-9%)
c) Elongation at break (%) 380 (-34%) 390 (-35%)
Compression Set at 70 °C for 48 hrs, 25% Deflection ASTMD – 395, (%) 22.70 16.80

Observation Remarks:
· SCCARE CCS provide better before ageing properties as compared to MS Sulphur.
· Inspite of lower anti-oxidants/anti-ozonants, properties are similar after ageing.


Example No.3) Cost Effectiveness of SCCARE CCS:
Formulation: Nitrile Rubber (Medium): 100, ZnO: 5, Strearic Acid: 1, HAF: 30, DOP: 10, CBS: 1.2, TMT: 1.2, Sulphur: 1.5
Properties MC SCCARE CCS
CLAY, phr 60 70
Physical Testing Before Ageing
   
  150 150
Cure Temp °C 20 20
Cure Time, Mins. 68 69
Hardness (Shore A) 92 98
Tensile Strenght (kg/cm²) 380 375
Elongation at Break (%)    
     
Compression Set, 25% Deflection at 100°C for 24 hrs (%) 52.10 50.17

Observation Remark:
· Additional China Clay does not deter SCCARE CCS
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SCCARE ICS
Surface Treated for Replacement of Insoluble Sulphur

Chemical Composition:
Material : Treated Sulphur
Appearance : Yellow Powder
Assay : 97% Min.
Ash, % : : 1% Max.
Mesh Size : 200 Min.
Moisture, % : 1% Max.
Shelf Life : 2 Years Min.

Function:
SCCARE ICS has been electricity / chemically surface treated which gives no blooming during storage of Rubber Compounds while improving some of the Physical Properties.

Mixing Cycle:
Addition of the SCCARE ICS is recommended after maturation of Master Batch or as usually done on your shop floor.

Compounding Guidelines:
Example No.1) Comparison of ageing properties:

Formulation: RMA1X:85, PBR:15, ZNO:5, Stearic Acid:1.5, P.Wax:0.5 6PPD:2, TDQ:1, HAF:48, A.OIL:8, CBS:1.5
Physical Testing Before Ageing Insoluble (2.6phr) SCCARE ICS (2.2phr)
Curing Time °C
150
150
Curing Time, Min. 12 12
Hardness (Shore A) 63 63
Tensile Strength (kg/cm²) 220 226
Elongation at Break (%) 520 540
Modulus: 300% (kg/cm²) 90 94

Typical Application:
· Truck Tyre
· V-Belt
· Conveyor Belt
· Retreads etc..
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SWASTIKA CONSTANT CARE
An ISO9001: 2000 Certified Company
62, Bentinck Street, 4th Floor, Kolkata - 700069, West Bengal, India
Phone:91-33-40060690
Fax:91-33-40060690
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Mr. Siddharth V. Jeloka (C.E.O.)
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