Water Dispersible Expandable Microspheres CAS 38742-70-0 (Wet Form) are thermally expandable functional additives tailored for aqueous coating systems. In wet form, the microspheres feature outstanding water dispersibility and can be blended evenly into various water-based coatings without agglomeration. They remain stable at room temperature and avoid premature expansion during formulation. Upon heating and curing, microspheres expand controllably to form fine closed-cell structures, lowering c

Product Detail

Water Dispersible Expandable Microspheres CAS 38742-70-0 Wet Form for Aqueous Coating Systems

Product Overview

Water Dispersible Expandable Microspheres CAS 38742-70-0 (Wet Form) is a thermally expandable functional additive developed exclusively for aqueous coating systems. Supplied in wet form, it solves the dispersion obstacles of dry microspheres in water-based formulations. The microspheres can be uniformly mixed into various waterborne coatings directly without pre-grinding.

The product keeps stable at ambient temperature and prevents premature expansion during mixing. In the heating and curing procedure of coatings, microspheres expand controllably to form uniform closed-cell structures. It effectively reduces coating density, cuts raw material consumption, and endows coatings with thermal insulation, sound absorption, matte surface and soft texture. With excellent compatibility with diverse waterborne resins, it will not cause pinholes, cracking or other film defects, serving as premium lightweight modification material for aqueous coatings.

Core Features

Excellent water dispersibility
Wet-form design enables uniform dispersion in water-based systems, no agglomeration, no particle floating.
Controllable thermal expansion performance
Stable expansion temperature range, generates consistent fine closed-cell structure for reliable lightweight effect.
Wide formula compatibility
Matches well with water-based acrylic, polyurethane and other aqueous resins without impairing film properties.
Anti-premature expansion
Tolerates conventional low-speed stirring at room temperature, stable performance during continuous production.
Multifunctional coating upgrading
Achieve lightweight modification while improving thermal insulation, matte effect and hand feel.
Environment-friendly physical foaming
Low VOC, physical expansion mechanism, satisfies environmental requirements for water-based coating products.

Product Specifications

Product Name: Water Dispersible Expandable Microspheres (Wet Form)

CAS No: 38742-70-0

Appearance: White wet dispersion

Core Function: Lightweight filling, density reduction, thermal insulation, matte texture adjustment

Applicable Systems: All kinds of aqueous coating systems

Recommended Dosage: 1%–4% of total formula weight

Application Scope

Suitable for lightweight modification of architectural water-based coatings, industrial aqueous coatings, leather water-based finishing agents, textile printing pastes, waterborne adhesives and other water-based coating materials. Widely used in construction, leather, textile, packaging and furniture industries.

Usage Guide

Add wet-form water dispersible expandable microspheres into aqueous coating materials under low-speed stirring at room temperature. Avoid high-shear agitation and overheating to prevent premature expansion. Complete thermal expansion during coating baking and curing. Adjust addition amount and curing parameters according to target lightweight degree and surface effect. Keep tightly sealed during storage.

Packaging & Storage

Packaging: Sealed plastic drum, leak-proof, suitable for long-distance bulk transportation.

Storage: Store in cool and ventilated warehouse. Keep sealed tightly; avoid direct sunlight, high temperature and freezing environment.

Shelf Life: 12 months under proper storage conditions.

Our Advantages

Our wet-form water dispersible expandable microspheres feature uniform particle size and stable batch foaming performance, specially optimized for aqueous coating systems. Compared with dry powder microspheres, it simplifies production processes and improves mixing uniformity. We support factory direct supply, sufficient inventory, free sample testing and professional formula technical support to help customers optimize formulations and lower production costs.

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