AQUACER 1031

STRUKTOL® WB 16 is a lubricant and process additive manufactured by Struktol Company of America, designed for use in rubber compounds. Here are the details:

Composition:

• Primary Components: Mixture of fatty acid soaps, predominantly calcium-based.

Typical Properties:

• Appearance: Light-colored pastilles or powder.
• Dropping Point: 96 - 108°C.
• Specific Gravity: 0.98.
• Physiological Behavior: Refer to the safety data sheet for detailed information.
• Storage Stability: At least 2 years under normal storage conditions.
• Packaging: 25 kg PE bags.

Recommendations for Application:

• Function: Improves flow properties of rubber compounds by reducing viscosity and internal friction.
• Benefits:
  • Enhances mold release, especially effective for complex mold designs.
  • Prevents sticking to rotors in internal mixers and on open mills.
  • Improves calender roll release.
  • Slightly accelerates the cure rate of sulfur-containing compounds.
• Application: Can be added at any stage of the mixing cycle, including during warm-up prior to calendering. Optimal effectiveness is achieved when added during the final mixing stage.
• Dosage: Typically used at 0.5 to 3% of the total batch weight.

Additional Notes:

• Usage Scope: Suitable for various rubber processing applications where improved flow, reduced friction, and enhanced release properties are required.
• Disclaimer: The information provided is believed to be reliable, but users are advised to refer to the safety data sheet and conduct their own tests to ensure suitability for specific applications.

STRUKTOL® WB 16 is a specialized additive aimed at improving processing efficiency and product quality in rubber manufacturing processes.

Kezadol GR is a desiccant used in rubber compounds to absorb moisture and prevent defects such as blisters and porosity during curing processes. It consists of 81.5% calcium oxide granules coated with special dispersing agents.

Key Characteristics:

• Composition: 81.5% calcium oxide
• Appearance: Light grey, soft granules (diameter 6–8 mm), free-flowing
• Density: Approx. 2.36 g/cm³ at 20 °C
• Storage Stability: 1 year under cool and dry conditions in sealed packaging
• Chemical Characteristics: Calcium oxide coated by special dispersing agents

Functions and Benefits:

• Desiccant: Absorbs moisture in rubber compounds, converting calcium oxide to calcium hydroxide, which happens during storage of the uncured rubber.
• Acid Absorber: Reacts with hydrochloric acid (HCl) to form calcium chloride (CaCl₂), reducing the corrosive effect of HCl on metal parts.
• Nitrosamine Inhibitor: Helps decrease the formation of nitrosamines.
• Delayed Action: Inactive during mixing but reacts quickly afterward, allowing for shorter standing time between mixing and extrusion.
• Improved Physical Properties: Reduces the need for higher dosages compared to calcium oxide powder preparations, which can negatively affect the physical properties of the vulcanizate.
• Enhanced Dispersion: Soft granules disperse easily in various rubber compounds, even in soft rubber and open mills.

Applications:

• Pressureless Continuous Curing Systems: Microwave, LCM (Liquid Curing Media), fluid beds, or hot air.
• Low Pressure Curing: Particularly in the cable industry.
• Rubber Compounds: To prevent blisters and porosity in profiles and other products.

Dosage:

• Depends on the moisture content in the compound.
• For each part of water by weight, approximately 4 parts of Kezadol GR are required.
• Typically, 5-10% of the filler quantity is recommended.
• Best added during the second mixing stage to allow most humidity to escape during the first step at higher temperatures.
• Caution: Overdosage can cause white specks due to unreacted calcium oxide reacting later with humidity.

Packaging:

• Standard: Hermetically sealed PE bags (1 kg each) in cartons of 15 kg each, stored on pallets (960 kg net).
• Custom: Sachets containing 0.5 kg to 5 kg to suit customer requirements at no extra cost.

Handling and Safety:

• Direct addition to the mixer is possible, avoiding weighing and handling.
• Designed to improve workplace safety by reducing direct skin contact.
• For further safety and handling instructions, consult the material safety data sheet (MSDS).

Kezadol GR is particularly advantageous in rubber manufacturing processes requiring moisture control and acid absorption, offering better physical properties and easier handling compared to traditional calcium oxide preparations.

TAC/GR 70 is another specific product detailed in the technical leaflet provided. Here’s a comprehensive description of what TAC/GR 70 entails based on the information available:

Product Name:

• TAC/GR 70

Composition:

• Chemical Name: Triallylcyanurate (TAC)
• Content: Contains 70% triallylcyanurate

Physical Form:

• Appearance: White, soft granules
• Particle Size: Diameter of 6–8 mm
• Flowability: Free-flowing

Chemical Characteristics:

• Coating: Coated by special plasticizers and dispersing agents bound to carriers

Physical Properties:

• Density at 20°C: Approximately 1.21 g/cm³
• Ash Content: 23.0 ± 2.0%

Applications:

• Compatibility: Excellent with polymers such as EPDM, HNBR, CM, and EVA
• Use: Provides a higher amount of active substance compared to TAC/GR 50, thereby potentially enhancing performance in applications requiring higher concentration of triallylcyanurate.
• Benefit: Improves general physical properties and temperature resistance of cured rubber compounds after heat aging
• No Impact on Electrical Properties: Does not negatively affect the electrical properties of insulation compounds

Storage and Packaging:

• Storage Stability: Can be stored for 3 years under suitable conditions (cool and dry)
• Packaging: Hermetically sealed in PE bags of low melting foil (60–85 °C), packaged in cardboxes of 15 kg each. Pre-weighed sachets of 0.5–2.5 kg are available on request.