How to Select a Flexible, Durable Water-Based PU Grade for Your Application

Selecting a water-based polyurethane grade starts with the surface you need to coat and the performance expected from the finished film. Flexibility, adhesion, weathering, and scratch resistance are key factors to compare. For plastic coatings that call for an elastic feel and durable performance, Water-based Flexible Polyol Dispersion HPU-7790 is a grade to evaluate.

When HPU-7790 May Be a Good Fit

HPU-7790 is a polyol dispersion with a polycarbonate structure, designed for waterborne two-component polyurethane coatings. Used with a polyisocyanate, it is described as producing a high-elastic film with good touch, scratch resistance, and weather resistance. The product is particularly suited to water-based plastic paints and is reported to adhere well to plastic substrates.

• Evaluate it when the coating needs a flexible, elastic film and a pleasant feel.
• Consider it for applications where weather and scratch resistance are important; no numerical test results are provided in the product information.
• Its stated adhesion benefit is specific to plastics, so check suitability on other substrates.
• Potential end-use sectors noted in the company profile include 3C digital products, automotive interiors, household appliances, and plastic toys.

Check the Coating System and Formulation

Before choosing a grade, confirm that your process uses a waterborne two-component polyurethane system. HPU-7790 is intended to be combined with polyisocyanates. Guanzhi OS-9016 and OS-9030 are listed as compatible examples, but the available product information does not state mixing ratios or curing conditions. Ask the supplier to confirm these details for your formulation and production setup.

The product is described as solvent-free, organic tin free, and environmentally friendly. Factory quality control is listed for HPU-7790. Separately, the company identifies solid content, pH, viscosity, and particle size distribution among its inspection checks; these are company-level checks, not published numerical specifications for this grade.

Selection Factors at a Glance

Company and Technical Support

Guangzhou Guanzhi New Material Technology Co., Ltd. holds 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 reports cooperation cases involving coating work with two leading Chinese paint and coatings providers.

Its business combines research and development, manufacturing, sales, and technical service. The listed product divisions include water-based resins, crosslinkers, additives, and bio-based special polyols, supported by R&D and application centers in Guangzhou and Shanghai. The company reports more than 50 invention patents and production capacity of 30,000 tons per year, along with an Intellectual Property Compliance Management System Certification.

Frequently Asked Questions

Can HPU-7790 be considered for water-based plastic paint?

Yes. Waterborne plastic paints are identified as a particularly suitable use, and the product information states that it offers good adhesion on plastics.

Which properties support a flexible and durable coating?

The stated profile includes a high-elastic film, good touch, scratch resistance, and weather resistance. Published numerical performance data is not included, so test the coating against your requirements.

What crosslinkers are named for use with this dispersion?

HPU-7790 is intended for use with polyisocyanates. Guanzhi OS-9016 and OS-9030 are given as examples. Confirm the appropriate formulation with the supplier before production.

Recommendation

If you are developing a waterborne two-component polyurethane coating for plastic and require elasticity, weather resistance, scratch resistance, and good substrate adhesion, HPU-7790 is a candidate for evaluation. Compare its stated properties with your application needs, then confirm formulation and processing details with the supplier. For technical solutions or support, contact sophia@guanzhihg.com.

About Us

Guangzhou Guanzhi New Material Technology Co., Ltd. was founded in 2014 and brings together R&D, production, sales, and technical services. Its portfolio spans water-based resins, crosslinkers, additives, and bio-based special polyols. The company reports a 30,000-ton annual production capacity and more than 50 invention patents.