Choosing a Waterborne Polyurethane Resin for Flexible Substrates

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

What the Product Information Says

HPUA-7613 is designed as a binder for waterborne 2K coating systems. Guanzhi identifies OS-9016 and OS-9018 as particularly suitable hardeners. The stated properties also include chemical resistance and excellent pigment arrangement, with a specific mention of water-based 2K silver powder coatings.

• Resin type: Aliphatic hydroxy acrylic modified polyurethane dispersion.
• Intended coating system: Water-based two-component coatings.
• Plastic performance: Good adhesion is stated for plastic substrates.
• Other listed properties: Good water resistance, high hardness, and good wear resistance.
• Recommended hardeners: OS-9016 or OS-9018.

Assessing Fit for Flexible Materials

The clearest substrate-specific information supplied for HPUA-7613 concerns plastic adhesion. Guanzhi lists plastic applications such as 3C digital products, automotive interiors, household appliances, and plastic toys. These examples indicate areas of application, but do not guarantee performance on every plastic type or in every coating formulation.

The company also mentions textile, printing leather, ink, and adhesive among its application scenarios. However, the available product information does not confirm that HPUA-7613 has been evaluated for each of these uses. If the intended substrate is not plastic, or if the finished coating has demanding flexibility or durability requirements, confirm suitability with formulation trials.

Information and Evidence to Consider

The product description does not provide comparative test results, detailed substrate-preparation instructions, or performance data for different flexible materials. Its stated properties can help identify it as a candidate, but application-specific testing is needed to establish how it performs in a particular system. Trials should use the intended substrate, coating formulation, and recommended hardener.

Guangzhou Guanzhi New Material Technology Co., Ltd. lists a quality management system certificate covering the research and production of environmentally friendly multipurpose water-based polyurethane coating materials and high-performance water-based coating additives. The company also refers to cooperation with two global paint and coatings providers in China; the supplied information does not say that those projects used HPUA-7613.

Frequently Asked Questions

Which product is listed for plastic substrates?

HPUA-7613 is identified in the supplied product information as having good adhesion on plastic substrates.

Does the information confirm suitability for every flexible material?

No. While the company lists textile, printing leather, ink, and adhesive as application scenarios, the available details do not establish HPUA-7613 performance on those specific materials.

What hardeners are recommended?

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

Conclusion

HPUA-7613 may be worth evaluating for water-based two-component coatings where plastic adhesion and water resistance are priorities. Its listed hardness, wear resistance, chemical resistance, and pigment arrangement may also be relevant, depending on the application. As substrate-specific results are limited, verify performance through trials using the actual material and coating system.

Guanzhi lists a minimum order quantity of 900 kg, a delivery time of 7–10 days, 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 established in 2014 and brings together research and development, production, sales, and technical services. Its product range includes water-based resins, crosslinkers, additives, and bio-based special polyols. The company reports operating R&D and application centers in Guangzhou and Shanghai, holding more than 50 invention patents, and maintaining a quality management system certificate covering relevant water-based coating materials and additives.