The world's coating variety structure is developing in the direction of reducing VOC, and water-based coating is one of the development directions. The proportion of traditional solvent-based coatings in China has gradually declined, and the development speed of water-based coatings is also very fast, but the low-grade varieties of polyvinyl alcohol still account for a large proportion. When choosing exterior wall coatings, whether water-based coatings are necessary depends on factors such as specific needs, environmental conditions and budget. Advantages of water-based coatings 1. Environmental protection ● Low VOC (volatile organic compounds), small odor during construction, more friendly to the environment and human health, in line with environmental regulations (especially suitable for public places or areas with strict environmental standards). Step 2: Security ● Non-flammable, low storage and construction risk, suitable for high-rise buildings or dense areas. 3. Breathability ● Water-based coatings usually have good permeability, can reduce the accumulation of water vapor inside the wall, reduce the risk of mildew, suitable for humid climate areas. 4. Convenient construction ● Can be diluted directly with water, easy to clean tools, suitable for DIY or quick construction. 5. Weather technological progress ● Modern water-based coatings (such as acrylic, silicon C class) ultraviolet resistance, weather resistance has been close to oil-based coatings, high-end products can meet the general climate needs. Oil-based paint application scenarios 1. Extreme environments ● Oil-based coatings (such as solvent-based fluorocarbon paint) may be more durable in areas that are resistant to chemical corrosion, high temperature, high humidity or strong ultraviolet light (such as coastal, industrial areas). 2. Adhesion and hardness ● Oil-based paint has strong adhesion to the base and high hardness of the paint film, which is suitable for external walls that are easy to wear or need impact resistance. 3. Renovate old walls ● If the old wall has an oily coating, directly covering the water-based paint may require additional treatment (such as sanding, transition primer), and the oil-based paint is more compatible. When is water-based paint recommended? 1. High environmental requirements ● Such as homes, schools, hospitals and other air quality-sensitive scenes. 2. Humid climate ● In the rainy areas in the south, the permeability of water-based coatings can reduce wall bubbling and peeling. 3. Conventional climate ● Medium and high-end water-based products (such as elastic latex paint) have been able to meet most climate needs, and the durability can reach 5-10 years. Matters needing attention ● Base treatment: regardless of water or oil, the base needs to be clean and firm, and the alkaline is too high (new cement wall) needs to be covered. ● Product selection: Identify the brand and test report, pay attention to weather resistance, stain resistance and other...

Acrylic emulsion for water-based ink SA-8408 SA-8409 is a special modified acrylic emulsion, which has excellent adhesion on PET, OPP, BOPP and other film materials. The product has excellent alcohol solubility, and can improve the drying speed with alcohol in any ratio of mutual solubility. It is widely used in ink packaging industry. Product features Good adhesion on the film material Excellent alcohol solubility Typical Properties Features Value Appearance Milky translucent bluish liquid Viscosity @25℃ ＜3000cps SolidContent 42-44% GlassTemperature 7℃ pH 7.0-8.0 Applications Recommended for inks Storage The resin should be stored in a properly sealed container at 5 ~ 35°C; Under these conditions, the storage stability of this product is 6 months

PET Film PET molecular structure is highly symmetrical, has a certain ability to crystal orientation, due to its molecular particularity, the general coating is difficult to attach on its surface, directly on its surface for spraying or printing, the coating is easy to peel, fall off. In order to increase the adhesion of PET material, it is necessary to pretreat its surface. There are mainly the following ways: [1] Corona treatment By corona treatment, the molecular structure of the substrate surface is rearranged to produce more polar parts, which is conducive to the adhesion of foreign objects. In order to make the PET substrate Dyne value should not decay with the passing of time, secondary corona treatment should be carried out on the PET substrate surface when spraying and printing. The machinery is expensive and complex to operate, and is not used by small and medium-sized enterprises. [2] Flame treatment The flame treatment head is covered on the PET surface, so that it instantly reaches a high temperature of 1000 degrees Celsius, and at high temperature, the macromolecules on the PET surface undergo oxidation reaction to produce polar groups, thereby increasing its adhesion. Due to the flame treatment temperature and the contact distance between the flame and PET, the PET surface will be burned due to poor operating contact or too long contact time. [3] PET Promoter / primer 1.With PET Promoter / primer on the PET surface for 10-15 μm spraying (coating), after drying can be rolled up, and can be reprinted or sprayed on its coating at any time within a year. 2.With PET Promoter /primer main agent, can add color paste, gold and silver powder, conductive material, magnetic material on PET material screen printing, spraying, printing. 3.PET Promoter / primer low price, easy to operate, widely used in film printing, keyboard screen printing, conductive, magnetic coating carrier, model pre-coating PET material. If you want to know more about the product information, or need samples, please contact us.

Leather finishing is generally divided into bottom coating, middle coating and top coating three parts. The bottom coating requires strong adhesion, hiding power, good embossing formability and stereotyping, and the middle coating further covers and corrects the color, and finally achieves the visual and physical performance requirements through the top coating. With a specific top coat, the effect of extinction or light can be created. Waterborne polyurethane resin is the main material commonly used in leather coating. Its film forming performance is good, the bond is firm, and the coating has the characteristics of high wear resistance, high elasticity, water resistance, weather resistance, cold resistance, chemical resistance and so on. After finishing, the finished leather feels full and comfortable, which improves the grade of the finished leather and plays a role in protecting the leather. In order to meet customers' pursuit of quality and meet the most stringent environmental requirements, Sinograce Chemical launched two single-component waterborne polyurethanes, which are polymerized from aliphatic isocyanates. Excellent adhesion, good adhesion resistance, comfortable feel, no yellowing, good weather resistance. The products are widely used in leather shoes, belts, sofas and luggage leather and other leather products. For leather top finish to provide excellent gloss and permeability, excellent wear resistance and weather resistance. Product features and applications PU-403 PU-404 Very high gloss and excellent transparency Natural light, high penetration High hardness, high temperature and high humidity resistance High hardness, good flexibility Feel smooth, excellent water resistance Feel smooth, good weather resistance, solvent resistance Low odor, low VOC, no APEO, NMP and tin substances Low odor, low VOC, no APEO, NMP and tin substances If you want to know more about the product information, or need samples, please contact us.