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| Mobel D 65 |
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Pigment Dispersing Agents
GENERAL INFORMATION
Mobel D 65 is a unique pigment used in both aqueous and organic solvent – based coatings.
The product is a liquid polymeric multi – functional surfactant. |
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| Physical properties |
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| Appearance: |
clear red /brown liquid |
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| Active matter: |
80 % |
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| PH 3% solution in water (Astmd 1172): |
6.0 – 7.5 Density, 20 ◦ c |
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| (Din 53217/3): |
approx. 1015 kg/m3 |
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| Viscosity, 25◦ c (Din 53015): |
max. 600 mpa.s |
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| Solubility: |
soluble in water, ethylene Glycol and xylene |
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| Flash point (ASTM D 90): |
> 150 ◦ c |
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Application and properties
Mobel D 65 is strongly adsorbed onto various substrates. The various reactive sites in the Mobel D 65
Molecule explain the multi – functionality. Depending on the characteristic properties of the solid substrate, specific sites of the molecule will be attracted.
This accounts for the excellent performance as a wetting and dispersing agent onto a very versatile collection of pigments. Mobel D 65 is extremely effective when used in waterborne or aliphatic solvent – based coatings in the systems Mobel D 65 improves pigment wetting and stability, thus reducing milling time. Flooding, floating and sedimentation are also inhibited.
Hydrophilic inorganic pigments and extenders usually do not require a wetting agent if dispersed in an aqueous medium with a polymeric dispersant such as Mobel D 65
Mobel D 65 displays excellent compatibility with Mobel D 64 and a combination of these is recommended when dispersing both Hydrophilic and hydrophobic (mostly organic) pigments in an aqueous system. |
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Dosage
For maximum pigment wetting and dispersion, Mobel D 65 should be added prior to the grinding stage. We recommend the following dosages of Mobel D 65 , calculated on the total weight of the coating:
- As a pigment dispersant in water borne paints: 0.1--- 0.5%
- In aliphatic solvent – based coatings: 0.3 - 1.0%
- To improve colorant compatibility: 0.2 - 0.5%
- As activator for bentonite in – situ addition (on bentonite): 30.0 – 100.0%
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As the quality and production procedures of coatings may vary enormously, it is recommended to check applicability in each case separately.
Aliphatic solvent-based coatings usually display poor wetting properties for hydrophilic and hydrophobic pigments. However, Mobel D 65 benefits are clearly demonstrated at all times when dispersing pigments in such iso – paraffin but aromatic – free coatings. The product also reduces the tendency of sagging these coatings.
Mobel D 65 is also successfully used to improve compatibility in base paints tinted with universal or aqueous colorants.
Furthermore, its usage as a gelling agent for bentonite ensures full activation of these thickeners.
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Mobel D 65 has been successfully used in the following systems:
- dispersion paints
- Waterborne alkyd paints
- Waterborne epoxies
- Aliphatic solvent – based coatings
- High solids
- Polyvinyl chloride coatings
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| Feature |
Consequence |
| Strongly reduces Surface tension |
- speeds up wetting of the pigments |
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| Strong adsorption On a wide range of Pigments |
- improved color development
- better and faster Dispersion
- Reduces rub – up and Color float
- improved compati – Bility of universal Colorants |
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| Electro – neutral compound |
- woks with acid, neutral And basic pigments |
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HANDLING AND SAFETY
More detailed information on handling and safety for each product is included in the relevant material safety data sheet, available for each product.
QUALITY ASSURANCE
Since 2005 the company is a holder of the ISO 9001 &14001 certificate, which guarantees that all operations are conducted according to the stipulated standards. |
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