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Ortho UPR Liquid Clear

Orthophthalic Polyester Resins

Cost-Effective, Versatile, Reliable

Our orthophthalic resins are the workhorse of composites manufacturing, ideal for cost-sensitive, general-purpose applications in construction, decorative, and industrial markets.

The Backbone of the Composites Industry

Orthophthalic resins are the most widely used family of unsaturated polyester resins (UPR). Known for their balance of performance and cost-efficiency, they are the go-to choice for a wide range of molded, laminated, and cast products.

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At Happy Composites, we provide ISO 9001:2015 certified orthophthalic resins manufactured by Grupo Químico Industrial de Toluca, distributed with U.S.-based logistics and compliance so you can focus on production.

Key Properties

Applications

Construction & Decorative

  • Cultured marble (vanities, bathtubs, shower trays)

  • Polymer concrete (floors, countertops, decorative elements)

  • Solid surface applications (kitchen, bathroom)

Industries Served

  • Construction & Infrastructure: cultured marble, panels, polymer concrete

  • Consumer & Decorative: sinks, bathtubs, countertops

  • Industrial Manufacturing: FRP laminates, molded parts

Certifications & Standards

  • ISO 9001:2015 certified manufacturing

  • Tested against:

    • ASTM D638: Tensile Properties

    • ASTM D648: Heat Distortion Temperature (HDT)

    • ASTM D790: Flexural Properties

  • Formulations available with low-styrene emissions (LSE) or no-styrene for regulatory compliance

Why Happy Composites for Orthophthalics

  • Broad portfolio of general-purpose and specialty orthophthalics

  • U.S.-based distribution removes import complexity

  • Reliable lead times and batch consistency

  • Datasheets and technical support available on request

Looking for a Cost-Effective Resin Solution?

Tell us about your project, and we’ll match you with the right orthophthalic resin grade for your needs.

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