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    Related: Adhesive Binder Styrene Butadiene Latex Epoxy Resin
    • Styrene-acrylic CAS 25085-34-1

    Styrene-acrylic CAS 25085-34-1

    Styrene-acrylic, CAS 25085-34-1, is a water-based styrene-acrylate copolymer dispersion supplied as an anionic emulsion for coating and adhesive formulations. Confirm the required grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

    • CAS: 25085-34-1
    • Synonyms: Styrene Acrylate Copolymer, Styrene-Acrylic Resin Dispersion, Benzene-Acrylic Emulsion, Polymerized Styrene-Acrylic Binder, Styrene Acrylic Latex
    • Einecs: 607-531-3
    • Molecular Formula: (C₈H₈·C₃H₄O₂)x
    • Grade: Coating / Industrial Grade
    • Package: 200kg/drum or 1000kg/IBC drum
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    Product Description

    Styrene-acrylic CAS 25085-34-1 is a water-based styrene-acrylate copolymer dispersion, with the repeat-unit formula (C₈H₈·C₃H₄O₂)x and EINECS 607-531-3.

    Synonyms: Styrene Acrylate Copolymer; Styrene-Acrylic Resin Dispersion; Benzene-Acrylic Emulsion; Polymerized Styrene-Acrylic Binder; Styrene Acrylic Latex.

    CAS: 25085-34-1.

    Molecular formula: (C₈H₈·C₃H₄O₂)x.

    It is supplied mainly as an anionic emulsion, appearing as a milky white liquid with a slight blue tint.

    The styrene contributes hardness and water resistance, while the acrylic component improves film formation, adhesion and flexibility.

    It is used as a binder in interior and exterior architectural paints, waterproof coatings, polymer-modified cement mortar, adhesives, paper coatings, textile printing and water-based inks.

    It generally has good calcium-ion stability, allowing it to remain dispersible in alkaline cement environments.

    It improves adhesion to mineral substrates, flexural behavior and water resistance in polymer-modified mortar and waterproof slurry.

    Typical values include solids content of about 48.0%, pH of about 7.0-9.0 and viscosity of about 500-2000 mPa·s.

    The glass transition temperature (Tg) is about 20 °C, and the minimum film-forming temperature (MFFT) is about 18 °C or less.

    Grades differ in solids content, pH, viscosity, Tg and MFFT, so the choice should match the substrate, application method and cure conditions.

    Store in an airtight container in a shaded, dry area at 5-35 °C, and prevent freezing because the emulsion is non-recoverable after de-emulsification.

    Protect from freezing and contamination, and keep containers closed when not in use.

    Confirm appearance, solids content, pH, viscosity, Tg, MFFT, ionicity and grade as required.

    Use suitable eye and skin protection during handling, and wash skin contact with soap and water.

    Confirm packaging with the requested quantity and destination requirements.

    The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

    For an RFQ, state the intended application, required grade, quantity, packaging, destination and document needs.

    FAQ - Technical & Supply Chain

    • Q:

      What is Styrene-acrylic CAS 25085-34-1?

      A: Styrene-acrylic is a water-based copolymer dispersion made by polymerizing styrene with acrylic monomers. CAS 25085-34-1 identifies this polymer family, often represented as (C8H8.C3H4O2)x, and it is supplied mainly as an anionic emulsion for coating and adhesive formulations.
    • Q:

      Which applications commonly use styrene-acrylic emulsion?

      A: It is used as a binder in interior and exterior architectural paints, waterproof coatings, polymer-modified cement mortar, adhesives, paper coatings, textile printing, and water-based inks. The styrene contributes hardness and water resistance while the acrylic component improves film formation, adhesion, and flexibility.
    • Q:

      Why is styrene-acrylic emulsion suitable for cementitious systems?

      A: This polymer type generally has good calcium-ion stability, allowing it to remain dispersible in alkaline cement environments. It improves adhesion to mineral substrates, flexural behavior, and water resistance in polymer-modified mortar, waterproof slurry, and related construction products.
    • Q:

      How should the right styrene-acrylic grade be selected?

      A: Grades differ in solids content, pH, viscosity, glass transition temperature, and minimum film-forming temperature. A harder, higher-Tg grade may improve block resistance and early water resistance, while a softer grade improves low-temperature film formation and flexibility, so the choice should match the substrate, application method, and cure conditions.

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