Choosing a Waterborne Polyurethane Resin for Flexible Substrates

When selecting a waterborne coating binder for flexible plastic parts, Guangzhou Guanzhi’s HPUA-7613 is one candidate to evaluate. It is an aliphatic hydroxy acrylic modified polyurethane dispersion intended for water-based two-component coatings. Product information reports good adhesion to plastic, good water resistance, high hardness, and wear resistance.

What the Product Data Says

HPUA-7613 is designed to serve as a binder in water-based 2K coating formulations. The manufacturer also notes excellent pigment arrangement, especially in water-based 2K silver-powder coatings, as well as chemical resistance. OS-9016 and OS-9018 are identified as particularly suitable hardeners.

• Resin type: Aliphatic hydroxy acrylic modified polyurethane dispersion.
• Intended coating system: Water-based two-component coatings.
• Stated plastic-related performance: Good adhesion and water resistance.
• Other stated properties: High hardness, wear resistance, pigment arrangement, and chemical resistance.
• Recommended hardeners: OS-9016 or OS-9018.

Assessing Flexible Substrate Compatibility

The clearest substrate-specific claim in the available information is good adhesion on plastic. Guanzhi identifies applications such as 3C digital products, automotive interiors, household appliances, and plastic toys. These examples indicate potential areas of use, but they do not establish compatibility with every plastic type, surface treatment, or coating formulation.

Textile, printing leather, ink, and adhesive are also mentioned among the company’s application scenarios. However, the supplied product information does not confirm HPUA-7613 performance on each of these materials. Test the resin on the actual substrate and under the intended processing and service conditions before selecting it for a project.

Information to Confirm Before Selection

The available data does not include comparative test results, detailed substrate preparation guidance, or performance figures for different flexible materials. Formulation trials should therefore assess adhesion, water resistance, wear, and any other project-specific requirements. Include the selected hardener, OS-9016 or OS-9018, in those evaluations.

Frequently Asked Questions

What product is identified for coating plastic substrates?

HPUA-7613 is the dispersion in the supplied information for which good adhesion on plastic is stated.

Does the data confirm suitability for every flexible material?

No. Although the company lists textile, printing leather, ink, and adhesive as application scenarios, the product data does not verify HPUA-7613 for those specific uses.

Which hardeners are recommended?

Guanzhi identifies OS-9016 and OS-9018 as particularly suitable hardeners for HPUA-7613.

Conclusion

HPUA-7613 may be worth evaluating when a water-based 2K coating calls for a polyurethane dispersion with stated plastic adhesion and water resistance. Confirm its performance on the target substrate through practical formulation testing, including the intended hardener. Guanzhi lists a 900 kg minimum order, a 7–10 day delivery period, factory quality control, technical support, and free reference formulas. For technical inquiries, contact sophia@guanzhihg.com.

About Guangzhou Guanzhi

Guangzhou Guanzhi New Material Technology Co., Ltd. was founded in 2014 and brings together research and development, manufacturing, sales, and technical services. Its product range includes water-based resins, crosslinkers, additives, and bio-based special polyols. The company operates research and application centers in Guangzhou and Shanghai, reports more than 50 invention patents, and lists a quality management system certificate covering research and production of environmentally friendly multipurpose water-based polyurethane coating materials and high-performance water-based coating additives. Its cooperation examples include coating-related work with two global paint and coatings providers in China; the supplied information does not specify whether HPUA-7613 was used in those projects.