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Styrene Acrylic Emulsion For Water Based Varnish For PE Double Coated Paper
WQ-2090 Water Based Acrylic Emulsion
Introduction
WQ-2090 is a hard non-film-forming styrene-acrylic copolymer emulsion specially formulated for water-based overcoat varnishes and printing inks. The varnish formulated with this product has fast drying speed and high gloss, good water resistance and anti-stick back performance, and it has good compatibility with popular acrylic polymers on the market. Because this product cannot form a film alone, it must be used with a suitable film-forming aids or mixed with a film-forming acrylic emulsion with a smaller particle size, such as used with our film-forming varnish emulsion WQ-2027, WQ-2024, WQ-2018, WQ-2015, etc. Besides, in flexo and gravure inks, the product has excellent pigment wetting.
Physical Property:
| Appearance | Translucent milky emulsion |
| Solid content (%) | 45±1 |
| Viscosity at 25℃,cps(Brookfield, LVT No.4,60 RPM ) | 1000-2000 |
| Acid value | 65 |
| pH value | 8.0-9.0 |
| Density(g/l) | 1.02-1.05 |
| Particle size(μm) | 0.20-0.30 |
| MFFT (℃) | >90 |
| Tg(℃) | +110 |
Performance
Application
| Suggested formula for water-based varnish | |||
| Water Based Varnish For PE double-coated paper (Flexography) | |||
| No. | Raw Materials | % | |
| ① | WQ-2090 (non-film forming) | 11.00 | |
| ② | WQ-2028 (water resistance/ improve gloss) | 10.00 | |
| ③ | Deionized water | 5.00 | |
| ④ | WQ-2015 (film-forming) | 63.00 | |
| ⑤ * | DOWSIL™ 51 | 2.00 | Dow Corning |
| ⑥ | Waterproof Wax Emulsion | 8.00 | WQ-W40 or local supplier |
| ⑦ | Defoamer | 1.00 | TEGO Foamex 825 |
| Total | 100.00 | ||
| Remark: 1. The process of adding raw materials: ① + ② + ③, first add these three raw materials while stirring , + ④ + ⑤ , finally add wax emulsion and defoamer while stirring + ⑥ + ⑦ Stirring time: about 30 minutes, 300 rpm/min. 2. *: DOWSIL™ 51 needed to be diluted with Ethanol =1:1 3. 4# cup: 25 ± 5s PH value: 8.30 ± 0.5 4. Final inks: varnish 50%+pigment paste 50% =100 (Ajusting it accoring to needs) Test Standards for inks: ① Ice resistance: Ice is placed for 10 minutes and wipe 15 times without decoloring as qualified. ② N-hexane resistance: 15 minutes of immersion without decoloring is qualified. ③ 4% Acetic acid resistance: Rub 15 times without decoloring as qualified. ④ Saliva resistance: Rub 15 times without decoloring as qualified. ⑤ Sauce resistance : Rub15 times without decoloring is qualified. ⑥ Edible oil resistance: Rub15 times without decoloring is qualified. | |||
Storage
Store in a closed container and avoid freezing and high temperature. Suggested normal storage temperature is 10 to 35℃.
Packing
200KG/Drum.
Special Tips
This material is complied according to our existing technology and experience, the technical advice provided is sincere, but it is not guaranteed to be used in all samples and formulations, all the data are for users reference only.
