DAPRO Ap1622

Product Details

CasNo： 9006-65-9

Appearance： liquid

Delivery Time： 15 days

Packing： 25kg/drum

Purity： 99%

1. Basic Information

• Brand & Model: DAPRO Ap1622
• Core Ingredients: Silicone as the main active component, compounded with high - efficiency dispersants and stabilizers to form a targeted defoaming system, which has both rapid defoaming and long - term foam inhibition capabilities.
• Appearance & Properties: Usually a colorless to pale yellow transparent liquid, without obvious mechanical impurities, with good fluidity, and no delamination or precipitation at room temperature.
• Packaging Specifications: The standard packaging is 25 kg/blue iron drum. The drum body is treated with an anti - corrosion coating, which can effectively prevent product deterioration caused by the external environment during transportation and storage. Large - size packages such as 50 kg and 200 kg can be customized according to customers' batch requirements.
• Physical Parameters:
  • Density: Approximately 0.95 - 1.05 g/cm³ (at 25℃), similar to the density of most solvent - based systems, facilitating uniform dispersion.
  • Flash Point: ≥100℃, it is a flammable liquid, and should be kept away from open flames and high - temperature environments.
  • Viscosity: 200 - 500 mPa·s (at 25℃), the moderate viscosity ensures easy stirring and dispersion in the system, and at the same time, it is not easy to reduce the defoaming efficiency due to excessive dilution.
  • pH Value: 6.0 - 8.0 (at 25℃, 1% aqueous solution), neutral, suitable for most solvent - based and water - based modified systems, and will not destroy the pH balance of the formula.

2. Product Features

• Dual Advantages of Efficient Defoaming and Long - term Foam Inhibition: The silicone component can quickly penetrate to the surface of the foam film, reduce the surface tension of the film, and cause the foam to rupture within a few seconds. The compounded stabilizer can form an invisible "foam inhibition layer" in the system, inhibiting new foam generated due to air entrainment during stirring and construction, and solving the pain point that traditional defoamers "defoam quickly but inhibit foam for a short time".
• Strong System Compatibility: Developed for solvent - based paints, coatings and modified resin systems, it has excellent compatibility with mainstream film - forming substances such as alkyd resins, urethanes, and acrylic resins. It will not cause problems such as paint film shrinkage, loss of gloss, and decreased adhesion. It is especially suitable for transparent oils and plastic coatings with high transparency requirements.
• Temperature and Shear Stability: It maintains stable performance in the temperature range of - 5℃ - 60℃, and will not fail due to low - temperature precipitation or high - temperature decomposition. At the same time, it can withstand high - speed stirring (≤3000 r/min) and shear force during construction, ensuring continuous play throughout the production and coating process of coatings and inks.
• Low Addition Amount and High Cost - effectiveness: In most systems, only 0.1% - 0.3% (based on the total formula mass) needs to be added to achieve the ideal defoaming effect, which is much lower than the addition amount of similar non - silicone defoamers, effectively reducing the formula cost for customers.

3. Application Fields

4. Usage Methods and Recommended Dosages

• Recommended Dosage: Based on the total formula mass, the conventional addition amount is 0.1% - 0.3%. If the foam problem in the system is serious (such as high - viscosity formula, high - speed stirring process), it can be appropriately adjusted to 0.3% - 0.5%. It is recommended to determine the optimal dosage through small - batch tests.
• Addition Methods:
  • Stage Addition Method: First, add 50% - 70% of the defoamer in the pigment dispersion stage or resin mixing stage of coatings and inks, and add the remaining part in the later stage of paint/ink mixing (that is, when the system viscosity tends to be stable), which can take into account defoaming efficiency and foam inhibition durability.
  • Pre - dilution Addition Method: For high - viscosity systems, the defoamer can be diluted with solvents in the system (such as xylene, ethyl acetate) at a ratio of 1:5 - 1:10 first, and then added to the main system after stirring evenly to avoid the problem that the defoamer agglomerates locally and affects the dispersion effect.
• Stirring Requirements: After addition, it is recommended to stir at a speed of 500 - 1000 r/min for 10 - 15 minutes to ensure that the defoamer is fully integrated with the system; avoid ultra - high - speed stirring (> 3000 r/min) to prevent excessive shearing from destroying the structure of silicone active components.

5. Storage and Safety

• Storage Conditions: It should be stored in a cool, dry and ventilated warehouse in a sealed manner, avoiding direct sunlight and rain. The storage temperature should be controlled at 5℃ - 35℃, away from heat sources (such as heaters, boilers) and fire sources. The unopened product has a shelf life of 18 months under suitable storage conditions; it should be used as soon as possible after opening (it is recommended to use it within 3 months), and the drum mouth should be sealed in time after each use to prevent solvent volatilization from causing changes in product concentration.
• Safety Precautions:
  • Operators should wear solvent - resistant gloves, goggles and masks when using to avoid direct skin contact or inhalation of volatile gases. If it accidentally contacts the skin, it should be rinsed with soapy water immediately. If it splashes into the eyes, it should be rinsed with plenty of water and seek medical attention in time.
  • The product is a flammable liquid. Fire - fighting equipment such as dry powder fire extinguishers should be equipped in the storage and use areas. Smoking or carrying open flames into the area is prohibited. It should comply with the dangerous chemicals transportation regulations during transportation and avoid being mixed with strong oxidants and strong acids.
  • It should not be stored together with food, medicine, cosmetics and other items. A clear "flammable chemical" sign should be set in the storage area to prevent accidental taking and misuse.