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VIACRYL SC 303/65XB
- Product Code : VIACRYL SC 303/65XB
- Manufacture : Allnex - Thailand
- Packing : 200 KG/DRUM
- Description :
Acrylic resin for cross-linking with amino resins
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Product name: VIACRYL SC 303/65XB
Made in: Thailand
Packing: 200 Kg/Drum
Description: Acrylic resin for cross-linking with amino resins
Performance: Good adhesion, gloss, hardness, flexibility and corrosion resistance
Applications: Automotive finishes, in particular for metallics, especially for metallic basecoats (wet-on-wet process)
Specifications:
- Dynamic Viscosity (25 1/s; 23 °C): 19000 - 30000 mPa.s
- Dynamic viscosity (25 1/s; 23 °C) 50% X: 700 - 1300 mPa.s
- Hazen colour value: <= 80
- Acid Value (solids): 10 - 15 mg KOH/g
- Non-Volatile Matter (1 h; 125 °C; 2 g; EAC): 63 - 67%
- Flash Point: 27°C
PROCESSING:
As a thermosetting cross-linking acrylic resin Viacryl SC 303/65XB must be combined with amino resins. In the stoving temperature range of 120 - 150 °C, reactive melamine resins such as Maprenal MF 590 and Maprenal MF 650 are used as reaction partners.
In special cases it may be advantageous to combine the resin with the less reactive hexamethoxymethylmelamine resins, e. g. Maprenal MF 900. The most suitable combination ratios are 70 to 85 parts acrylic resin and 15 to 30 parts melamine resin, calculated on solids. With acid catalysts, such as maleic acid or p-toluene sulphonic acid, cross-linking takes place already at stoving temperatures as low as 90 °C. The addition of cellulose acetobutyrate speeds up physical drying.
Pigmentation: Viacryl SC 303 can be processed with usual pigments suitable for stoving enamels, and with aluminium pigments. Depending on the shade required, the aluminium pigment content may be max. 4 % based on solid resin.
Dilution: The principial diluents used are aromatic hydrocarbons in combination with alcohols or glycol ethers or their esters. STORAGE:
At temperatures up to 25 °C storage stability packed in original containers amounts to at least 730 days.
