WU Type Expandable Polymer Microspheres CAS 38742-70-0 are high-performance foaming agents specially designed for textile water-based printing. With excellent dispersibility in aqueous printing paste, microspheres stay stable at ambient temperature without early expansion. Upon heating, they expand evenly to form fine closed-cell structure, delivering prominent three-dimensional foam texture and soft hand feel. Compatible with various water-based printing systems, it achieves clear embossed prin

Product Detail

WU Type Expandable Polymer Microspheres CAS 38742-70-0 Textile Water-based Printing Foaming Agent

Product Overview

WU Type Expandable Polymer Microspheres CAS 38742-70-0 is a thermally expandable foaming additive developed for textile water-based foaming printing. The product features outstanding dispersion in aqueous printing paste and maintains stable unexpanded status at room temperature without premature foaming during stirring and blending.

When subjected to heating after printing, microspheres expand uniformly to form dense closed-cell structures, forming distinct three-dimensional foam patterns with soft touch. It fits well with acrylic emulsions and various water-based printing slurries, does not block screen mesh, and ensures clear printing outlines. It is a preferred functional material for textile embossed foaming printing.

Core Features

Excellent water-based dispersibility
Easily mixed into printing paste, no agglomeration, no screen clogging, suitable for rotary and flat screen printing.
Controllable thermal expansion
Stable expansion temperature range, uniform foaming height, consistent three-dimensional effect in mass production.
Soft hand feel & clear pattern
Forms lightweight foam layer, avoids hard texture, maintains sharp printing edges.
Good compatibility
Compatible with common water-based printing binders, thickeners and auxiliaries, no adverse impact on fastness.
Stable processing performance
Resists early expansion under normal temperature stirring, long usable life of prepared printing paste.
Eco-friendly physical foaming
Low VOC, no harmful solvents, meets environmental standards for textile export.

Product Specifications

Product Name: WU Type Expandable Polymer Microspheres

CAS No: 38742-70-0

Appearance: White aqueous dispersion

Function: Foaming printing, 3D texture formation, soft hand feel adjustment

Applicable Field: Textile water-based foaming printing paste

Recommended Dosage: 2%–5% based on total printing paste weight

Application Scope

Widely used for foaming embossing printing on fabrics such as cotton, polyester, blended fabric, non-woven fabric. Suitable for garment printing, home textile decoration, fabric accessories, canvas bags and textile label printing. It can create stereoscopic foaming patterns and replace traditional foaming agents to obtain finer and more uniform foam layers.

Usage Guide

Add WU type expandable microspheres into water-based printing paste under low-speed stirring at room temperature. Avoid intense high-shear mixing and overheating to prevent premature expansion. Complete foaming molding during post-printing drying and baking. Adjust dosage, baking temperature and time according to target foaming thickness. Keep container sealed when not in use.

Packaging & Storage

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

Storage: Store in cool, ventilated warehouse. Keep tightly sealed, stay away from direct sunlight and high temperature.

Shelf Life: 12 months under proper storage conditions.

Our Advantages

WU series microspheres have uniform particle size and stable foaming performance, specially optimized for textile water-based printing systems. Good fluidity effectively reduces screen blocking problems during printing. Factory direct supply, stable batch quality, free sample testing and professional technical support are available to help printing factories optimize formulas and improve finished product grade.

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