The series product is achromatous and yellowish fat aldehyde hard resin in shape of grain with characteristic of anti-yellowing; it is applicable to the solvent based coating, solvent-based printing ink, and solvent-free industrial coatings, water-based coating, powder coating, resin modification and other related fields. Its performance is able to improve the anti-yellowing of membrane and shorten drying time, enhance membrane hardness, roundness and luster and solid content.
1ãÂÂTechnical Parameters of Special Formaldehyde Resin:
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Test item
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Indicators
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Test Method
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Appearance
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Colourless or yellowish powder
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Visual
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softening pointï¼ÂâÂÂï¼Â
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120ï½Â135
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DIN 53180
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Iodine colorimetry
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﹤3
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DIN 6162
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acid valueï¼ÂmgKOH/g)
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﹤2
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DIN 53402
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hydroxy value ï¼ÂmgKOH/gï¼Â
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150±5
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ISO 4629
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Vitrification temperatureï¼ÂâÂÂï¼Â
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80ï½Â115
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DIN 53765
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Viscosityï¼Â mpa.sï¼Â
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60ï½Â80
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DIN 53015
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2ãÂÂSolubility
Be able to dissolve in almost all paint solvents, such as aromatic hydrocarbons, alcohols, ketones, esters, and so on, do not dissolve in water, completely in the non-polar solvents such as mineral oil, aliphatic hydrocarbons, alicyclic hydrocarbon solubility in small.
3ãÂÂCharacteristics
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Performance
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ZY—521
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Solubility
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Polar-solvent
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Excellent
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Non-polar-solvent
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Excellent
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Compatibility
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Excellent
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Paint wetness
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Excellent
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Anti-yellowing
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Excellent
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4ãÂÂPackage
paper-plastics composite bag, net weight: 25kg
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