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Rhenogran® S-80 is a predispersed rubber chemical used primarily as a curing agent for both natural and synthetic rubbers. Here's a detailed overview of its composition, properties, and applications:

Product Description:

• Supplier: Rhein Chemie (a subsidiary of LANXESS)
• Type: Predispersed rubber chemicals and additives
• Function: Curing agent for all natural and synthetic rubbers

Composition:

• Main Components:
  • 80% sulphur (technical grade)
  • 20% elastomer binder and dispersing agents

Appearance:

• Form: Yellow granules
• Density: Approximately 1.64 g/cm³ at 20°C

Physiological Properties:

• See safety data sheet for detailed information.

Use:

• Functionality: Rhenogran S-80 is utilized as a curing agent in rubber formulations. It facilitates quick incorporation into rubber mixes and ensures excellent dispersion of sulphur throughout the compound.
• Advantages: Homogeneous dispersion of sulphur helps prevent localized overcured zones, thereby improving resistance against aging and dynamic fatigue of vulcanizates.
• Suitability: Particularly beneficial in soft compounds where achieving complete sulphur distribution is challenging.

Mode of Action:

• Dispersion: The thermoplastic, fully compatible elastomer binder combined with special dispersing agents enables quick absorption and optimal dispersion of sulphur in the rubber matrix.

Processing:

• Dosage: Typically used at similar dosages as non-elastomer-bound sulphur. Enhanced dispersion often makes higher dosages unnecessary.

Application:

• Recommended for:
  • Soft compounds requiring bright-colored appearance and free of sulphur stains
  • Rubber articles subjected to dynamic stress where improved fatigue resistance is essential

Packing:

• Packaging: Available in 25 kg cartons

Storage Stability:

• Storage Conditions: Store in original closed containers under cool and dry conditions, ensuring a maximum storage stability of 2 years.

Handling:

• Safety: Consult the material safety data sheet (MSDS) for comprehensive handling instructions and safety precautions related to Rhenogran S-80.

Rhenogran S-80 from Rhein Chemie is designed to enhance the processing and performance of rubber compounds by providing uniform dispersion of sulphur, thereby improving the overall quality and durability of vulcanizates in various applications.

Rhenogran® TBBS-80 is a predispersed rubber chemical primarily used as an accelerator in the vulcanization process of natural and synthetic rubbers. Here's a detailed breakdown of its composition, properties, and applications:

Product Description:

• Supplier: Rhein Chemie (a subsidiary of LANXESS)
• Type: Predispersed rubber chemicals and additives
• Function: Accelerator for vulcanization

Composition:

• Main Components:
  • 80% N-tert-butyl-2-benzothiazyl sulphenamide (technical grade)
  • 20% elastomer binder and dispersing agent

Appearance:

• Form: Beige granules
• Density: Approximately 1.17 g/cm³ at 20°C

Physiological Properties:

• See safety data sheet for detailed information.

Use:

• Functionality: Rhenogran TBBS-80 provides a long scorch time, ensuring excellent processing safety during rubber compound preparation. It promotes fast full cure during vulcanization.
• Application: Used either as a sole accelerator for low sulfur vulcanization or in combination with dithiocarbamate or thiuram accelerators.
• Benefits: Vulcanizates (rubber products) produced using Rhenogran TBBS-80 exhibit good aging resistance and mechanical moduli.

Mode of Action:

• Effectiveness: Demonstrates a reduced curing rate when combined with thiuram and dithiocarbamate accelerators.
• Secondary Acceleration: Thiourea enhances the acceleration effect of Rhenogran TBBS-80, particularly in compounds with low sulfur content. It may delay scorch in mixes accelerated with mercaptanes and thiurams.

Processing:

• Binder and Dispersing Agents: Contains a thermoplastic, fully compatible elastomer binder with specialized dispersing agents, ensuring quick absorption and excellent dispersion in rubber compounds.

Dosage:

• Recommended Dosage:
  • NR (Natural Rubber):
    • Primary: 0.5 - 1.0 phr (parts per hundred parts of rubber) with 2.5-3.5 phr sulfur
    • Secondary: 0.5 phr with 1.5-3.5 phr sulfur and 0.3 phr mercapto or thiuram accelerator
  • SBR (Styrene Butadiene Rubber):
    • 1.0-1.4 phr with 1.5-2.5 phr sulfur and 0 -0.2 phr thiuram accelerator

Application:

• Typical Uses: Treads for tires, air hoses, conveyor belts, footwear, and other technical rubber articles.
• Packing: 25 kg cartons

Storage Stability:

• Storage Conditions: Store in original closed containers under cool and dry conditions, ensuring a maximum storage stability of 2 years.

Handling:

• Safety: Refer to the material safety data sheet (MSDS) for comprehensive handling instructions and safety precautions related to Rhenogran TBBS-80.

Rhenogran TBBS-80 from Rhein Chemie is favored for its versatility in rubber compounding, offering enhanced processing safety, excellent vulcanizate properties, and compatibility with various rubber types and accelerators. It is particularly beneficial where maintaining scorch resistance and achieving rapid curing times are critical requirements.

Vulkalent® E/C is a specialized chemical additive used in the rubber industry, specifically designed as a retarder and replasticizing agent for the vulcanization process of natural and synthetic rubbers. Here’s an overview of its composition, properties, and applications:

Product Description:

• Supplier: LANXESS Deutschland GmbH, Business Unit Rhein Chemie
• Type: Specialty and Standard Chemicals
• Function: Retarder for vulcanization, replasticizing agent

Composition:

• Main Components:
  • N-Phenyl-N-(trichloromethylsulphenyl)-benzene sulphonamide with additives
• Appearance: White to beige powder, oil coated
• Density: Approximately 1.6 g/cm³ at 20°C

Typical Product Features:

• Assay: ≥ 90.0%
• Oil content: 1.5 ± 0.5%
• Volatile matter: ≤ 0.3%
• Ash content: ≤ 6.0%
• Sieve residue (0.063 mm): ≤ 0.5%

Properties and Use:

• Mode of Action: Vulkalent® E/C significantly increases the scorch time of rubber compounds, thereby extending the flow time during processing. It does not greatly affect the total vulcanization time but ensures a steep vulcanization curve, which is advantageous in maintaining good scorch resistance while achieving short curing times.
• Compatibility: Effective in systems with accelerators like Vulkacit® DM, Vulkacit® Merkapto, Vulkacit® CZ, Vulkacit® NZ, Rhenogran® MBS-80.
• Application Compatibility: Suitable for a wide range of rubber types including NBR, SBR, NR, and others depending on the accelerator system used.

Benefits:

• Processing: Easy to incorporate, disperses well even with small additions, and does not significantly alter viscosity.
• Vulcanizate Properties: Generally does not negatively impact mechanical properties such as tensile strength and resilience. It may slightly increase modulus and improve crosslinking by 5-10%.
• Color Stability: Does not affect the intrinsic color of vulcanizates; minimal discoloration observed under prolonged exposure.
• Odor and Blooming: No noticeable odor in vulcanizates, and no blooming observed when used within recommended levels.

Dosage and Applications:

• Dosage: Typical additions range from 0.1 to 2.0 parts per hundred parts of rubber (phr), depending on the specific accelerator system and desired effect (retardation or replasticization).
• Applications: Primarily used in molded goods production via injection and transfer molding, especially in applications where maintaining good scorch resistance and controlling flow times are critical.

Solubility and Packaging:

• Solubility: Soluble in ethyl acetate, methylene chloride; slightly soluble in acetone, alcohol, petrol (gasoline); practically insoluble in water.
• Packaging: Available in 25 kg boxes on pallets or 450 kg Bigbags.

Storage and Handling:

• Storage: Store in original closed containers under cool (approximately 25°C) and dry conditions, with a shelf life of approximately 547 days from the production date.
• Handling: Follow guidelines provided in the safety data sheet for proper handling procedures.

Vulkalent® E/C from LANXESS Rhein Chemie is valued for its ability to tailor the vulcanization process in rubber manufacturing, ensuring efficient processing and maintaining high-quality product characteristics across various rubber applications.

Rhenogran® CLD-80 is a predispersed rubber chemical known as a non-staining sulphur donor used for the vulcanization of natural and synthetic rubbers. Here’s a detailed overview of its composition, properties, and applications:

Product Description:

• Supplier: Rhein Chemie Rheinau GmbH
• Type: Predispersed rubber chemicals and additives
• Function: Non-staining sulphur donor for vulcanization

Composition:

• Main Components:
  • 80% caprolactam disulfide (technically defined)
  • 20% elastomer binder and dispersing agents
• Appearance: Off-white to beige granules
• Density: Approx. 1.20 g/cm³ at 20°C
• Melting Point: Minimum 120°C
• Sulphur Content: Minimum 16%
• Water Content: Maximum 1%
• Physiological Properties: Refer to the safety data sheet

Properties and Use:

• Mode of Action: Rhenogran CLD-80 liberates free sulfur under common curing conditions. This sulfur forms mono and disulfidic bridges, which contribute to excellent heat aging resistance in vulcanizates.
• Advantages:
  • Absence of blooming typically seen with thiuram disulfides.
  • Improved safety in scorch properties.
  • Rapid vulcanization suitable for voluminous molded articles.
  • Broad curing plateau, advantageous in high-temperature processing like salt bath vulcanization and injection molding.
  • Avoidance of reversion effects, favorable compression set properties, and low permanent elongation values in vulcanizates.

Dosage Recommendations:

• Recommended Dosages:
  • NR and SBR (with carbon black or colored fillers):
    • Rhenogran CLD-80: 1.0-2.0 phr
    • Sulphur: 0.25-1.0 phr
    • Rhenogran CBS-80: 0.5-0.75 phr
    • Rhenogran MBTS-80: 0.3-0.5 phr
  • NBR and IIR:
    • NBR: Rhenogran CLD-80: 1.0-2.0 phr, Sulphur: 0-0.5 phr, Rhenogran MBTS-80: 1.0-1.5 phr
    • IIR: Rhenogran CLD-80: 1.2-2.5 phr, Sulphur: 1.0-1.75 phr, Rhenogran MBTS-80: 1.0-2.5 phr
  • Sulphurless Vulcanization:
    • Rhenogran CLD-80: 1.25-2.0 phr
    • Rhenogran CBS-80: 1.0-1.5 phr
    • Rhenogran TMTD-80: 1.0-1.5 phr

Applications:

• Suitable for:
  • Tyre carcasses (NR)
  • Nitrile rubber seals (NBR)
  • Age-resisting articles (SBR, NBR, EPDM)

Packaging and Storage:

• Packaging: 25 kg paper bags
• Storage Stability: Store in original closed containers under cool and dry conditions for up to 12 months.
• Handling: Refer to the material safety data sheet (MSDS) for specific handling instructions.

Additional Information:

• Trademark: The ® symbol indicates it is a registered trademark of Rhein Chemie.

Rhenogran CLD-80 is particularly valued for its ability to provide high heat resistance in rubber vulcanizates, along with improved processing safety and reduced blooming effects compared to traditional accelerators. Its versatility makes it suitable for various applications across different types of rubber compounds.

Rhenogran® MBTS-80 is a predispersed rubber chemical designed as a semi-ultra accelerator for the vulcanization of natural and synthetic rubbers. Here are the details of its composition, properties, and usage:

Product Description:

• Supplier: Rhein Chemie Rheinau GmbH
• Type: Predispersed rubber chemicals and additives
• Function: Semi-ultra accelerator for the vulcanization of natural and synthetic rubbers

Composition:

• Main Components:
  • 80% dibenzothiazyl disulphide (technically defined)
  • 20% elastomer binder and dispersing agents
• Appearance: Green granules
• Density: Approx. 1.36 g/cm³ at 20°C
• Melting Point: Minimum 169°C
• Substance Content: Minimum 95.5%
• Ash Content: Maximum 0.5%
• Sieve Residue 63 μ: Maximum 0.5%
• Free MBT: Maximum 1.0%
• Evaporation Loss: Maximum 0.5%
• Physiological Properties: Refer to the safety data sheet

Properties and Use:

• Mode of Action: Rhenogran MBTS-80 acts as a versatile accelerator with good processing safety. It can be used alone or in combination with other accelerators.
• Activation: It is activated by thiurams, dithiocarbamates, and aldehyde-amines. When used with activated dithiocarbamates, it prevents scorching.
• Effect in Compounds:
  • In CR (polychloroprene) compounds, it has a retarding effect during processing and vulcanization.
  • When combined with ultra-accelerators, it enhances processing safety and improves the aging properties of vulcanizates.

Dosage:

• Recommended Dosages:
  • NR: Primary usage at 1-2 phr with 2-3 phr sulfur; secondary usage at 0.5-1 phr with 1-2 phr sulfur and 0.2-0.5 phr dithiocarbamate accelerator.
  • SBR: Primary usage at 1-3 phr with 1-3 phr sulfur; secondary usage at 0.25-0.75 phr with 1-3 phr sulfur and 0.3-0.6 phr sulphenamide accelerator.
  • NBR: Primary usage at 1-2 phr with 0.2-2 phr sulfur; secondary usage at 0.75 phr with 0.2-2 phr sulfur and 0.3 phr sulphenamide accelerator.
  • IIR: Usage ranges from 0.25-1 phr with 1-2 phr sulfur.

Applications:

• Suitable for various technical rubber articles of all kinds, providing essential properties in vulcanization processes for NR, SBR, NBR, IIR, and CR.

Packaging and Storage:

• Packaging: 25 kg paper bags
• Storage Stability: Should be stored in original closed containers under cool and dry conditions, with a maximum shelf life of 1 year.
• Handling: Refer to the material safety data sheet (MSDS) for specific handling instructions.

Additional Information:

• Trademark: The ® symbol indicates it is a registered trademark of Rhein Chemie.

Summary:

Rhenogran® MBTS-80 is a reliable semi-ultra accelerator used across various rubber types to enhance the vulcanization process. Its formulation ensures good processing safety, compatibility with other accelerators, and improved aging characteristics of vulcanizates, making it suitable for a wide range of industrial applications.

Rhenogran® ZBEC-70 is a predispersed rubber chemical used as an ultra accelerator in the vulcanization process of natural and synthetic rubbers. Here's an overview of its characteristics and usage:

Product Description:

• Supplier: Rhein Chemie Rheinau GmbH
• Type: Predispersed rubber chemicals and additives
• Function: Ultra accelerator for the vulcanization of natural and synthetic rubbers

Composition:

• Main Components:
  • 70% Zinc-dibenzyl-dithiocarbamate (technically defined)
  • 30% elastomer binder and dispersing agents
• Appearance: White-grey granules
• Density: Approx. 1.22 g/cm³ at 20°C
• Active Content: ≥ 97%
• Melting Point: Minimum 180°C
• Physiological Properties: Does not produce harmful N-nitrosamines

Properties and Use:

• Mode of Action: Rhenogran ZBEC-70 acts as a fast-acting thiocarbamate accelerator. It can be used as a primary or secondary accelerator in natural and synthetic rubbers such as EPDM, IR, SBR, NBR, and IIR.
• Advantages:
  • Offers high processing safety compared to conventional dithiocarbamate accelerators.
  • Compatible with basic accelerators or Rhenogran® Geniplex®-80, which activate its effectiveness.
  • Demonstrates similar modulus properties as other dithiocarbamates when used in equimolar quantities.
  • Improves aging characteristics significantly when combined with antioxidants.
• Dosage: Typically used at 0.8 to 2.5 parts per hundred rubber (phr) in EPDM, and varying dosages in NR, SBR, and NBR depending on specific requirements.
• Recommended Combinations: For EPDM, combinations with Rhenogran S-80, Rhenogran MBT (MBTS)-80, and Rhenogran CBS-80 are suggested.

Applications:

• Suitable for a wide range of technical rubber articles based on NR, EPDM, IR, SBR, NBR, or IIR.
• Particularly effective for light or brightly colored rubber articles.

Packaging and Storage:

• Packaging: 25 kg paper bags
• Storage Stability: Should be stored in original closed containers under cool and dry conditions for a maximum of 2 years.
• Handling: Refer to the material safety data sheet (MSDS) for specific handling instructions.

Additional Information:

• Trademark: The ® symbol indicates it is a registered trademark of Rhein Chemie.

Summary:

Rhenogran® ZBEC-70 is a specialized accelerator used to enhance the vulcanization process in various rubber formulations. Its high processing safety, compatibility with other accelerators, and ability to improve aging characteristics make it suitable for demanding applications in the rubber industry, particularly where color retention and performance under stress are critical.

Rhenogran® TP-50 is a predispersed rubber chemical used as a special accelerator in the vulcanization process of diene rubbers. Here are the key details about this product:

Product Description:

• Supplier: Rhein Chemie Rheinau GmbH
• Type: Predispersed rubber chemicals and additives
• Function: Non-staining special accelerator for the rapid vulcanization of diene rubbers

Composition:

• Main Components:
  • 50% zinc dialkyldithiophosphate
  • 50% elastomer binder, dispersing agents, and silica
• Appearance: Blue granules
• Density: Approx. 1.25 g/cm³ at 20°C
• Sulphur Content: Approximately 10.7%

Properties and Use:

• Mode of Action: Rhenogran TP-50 accelerates the vulcanization process in EPDM compounds and other diene rubbers, particularly when combined with accelerators of the thiazol and thiuram classes, sulfur, and zinc oxide.
• Advantages:
  • Provides high cross-linking efficiency.
  • Does not cause blooming (exudation of additives to the surface) when used within recommended dosages.
  • Ensures good processing safety and storage stability of the compounded raw materials.
  • Does not form hazardous N-nitrosamines during vulcanization.
• Compatibility: Suitable for use with NR, IR, SBR, NBR, IIR, EPDM, etc.
• Dosage: Typically used at 2 to 4 parts per hundred rubber (phr), depending on the specific application and compound requirements. May be used in higher dosages (up to 5 phr) in heavily filled compounds.
• Recommended Combinations:
  • Primary: 0.6 - 1.9 phr Rhenogran MBT-80 and 0.3 - 1 phr Rhenogran TMTD-80.
  • Secondary: 0.3 - 0.6 phr Rhenogran MBTS-80 and 0.3 - 0.6 phr Rhenogran S-80.
• Applications: Used in the production of technical molded and extruded articles such as sheets, buffers, dock fenders, and profiles.

Packaging and Storage:

• Packaging: 25 kg paper bags
• Storage Stability: Should be stored in original closed containers under cool and dry conditions for a maximum of 2 years.
• Handling: Refer to the material safety data sheet (MSDS) for specific handling instructions.

Additional Information:

• Trademark: The ® symbol indicates it is a registered trademark of Rhein Chemie.

Summary:

Rhenogran® TP-50 is a specialized accelerator designed to enhance the vulcanization process in diene rubbers, providing excellent cross-linking efficiency, processing safety, and storage stability. It is particularly suitable for applications requiring rapid vulcanization without staining, such as in the production of various technical rubber products.

Rhenogran® DPG-80 is a predispersed rubber accelerator primarily used for the vulcanization process in both natural and synthetic rubbers. Here are the key details about this product:

Product Description:

• Supplier: Rhein Chemie (Qingdao) Ltd.
• Type: Predispersed rubber chemicals and additives
• Function: Accelerator for the vulcanization of natural and synthetic rubbers

Composition:

• Main Components:
  • 80% N,N'-diphenyl guanidine (DPG)
  • 20% elastomer binder and dispersing agents
• Appearance: Purple granules (color intensity may vary)
• Density: Approx. 1.14 g/cm³ at 20°C

Properties and Use:

• Mode of Action: Provides a very long scorch time (time before vulcanization starts) and a relatively slow full cure. It can cause slight discoloration and is not suitable for use in light-colored rubber articles, except as an activator.
• Compatibility: The binder and dispersing agents ensure quick absorption and excellent dispersion in rubber, maximizing the effectiveness of the accelerator.
• Dosage:
  • Primary: Typically used at 1 - 2 parts per hundred rubber (phr) with 2.5 - 3.5 phr of sulfur.
  • Secondary: Typically used at 0.1 - 0.25 phr with 0.75 - 1 phr of mercapto accelerator and 2.5 phr of sulfur.
• Applications: Suitable for technical articles of various kinds where vulcanization is required.

Packaging and Storage:

• Packaging: 25 kg cartons
• Storage Stability: Should be stored in original closed containers under cool and dry conditions for a maximum of 2 years.
• Handling: Refer to the material safety data sheet (MSDS) for specific handling instructions.

Additional Information:

• Compatibility Notes: Rhenogran DPG-80 strongly activates accelerators of the mercapto type but has little effect in IIR (Butyl Rubber) and EPDM.
• Trademark: The ® symbol indicates it is a registered trademark of Rhein Chemie.

Summary:

Rhenogran® DPG-80 is a specialized accelerator designed to facilitate the vulcanization process in rubber manufacturing. Its predispersed form ensures easy handling and effective incorporation into rubber compounds, enhancing processing efficiency and final product performance in technical applications.