Requirements for Polyurethane Dispersions as Primary Resins in Color Paste Formulation
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Polyurethane dispersions (PUDs) for pigment dispersion must achieve ‌ultra-fine particle size control‌ to ensure colloidal stability and chromatic uniformity, supported by ‌electrostatic/steric stabilization‌ for pH tolerance and thermal resistance. The resin requires ‌broad solvent compatibility‌ with polar/non-polar blends (e.g., alcohols, ketones) to maintain viscosity stability and storage durability. ‌Low ionic content‌ prevents pigment flocculation in aqueous systems, while ‌APEO-free‌ and ‌REACH-compliant‌ formulations address eco-regulatory demands. Optimal storage conditions (5–35°C) and frost protection are critical to preserve dispersion integrity. For application versatility, ‌shear-thinning behavior‌ balances high pigment loading with spray/brush adaptability, complemented by adhesion performance for substrate bonding. Modified ionic architectures (anionic/non-ionic) enhance electrolyte resistance and cross-linking flexibility

Product Introduction
WL-PU212 is an aliphatic waterborne polyurethane dispersion with low viscosity, high elasticity, and good resistance to yellowing, suitable as the main resin for color paste dispersion.

Specification

Properties

l Does not contain N-methylpyrrolidone (NMP) and DMAC, and does not contain organotin;
l The film is soft to form, good hand feel, dry and crisp;
l Excellent resistance to yellowing, up to level 5;
l Good elasticity, high elongation, elongation greater than 600%;
l Good washing fastness;
l Good dispersion of colorants and excellent color development;
l Resistant to over 100000 twists and turns at room temperature.

Application

This product is ideal for applications in apparel jackets, bags, shoe uppers, and similar items. It serves as the primary resin for textile printing inks and can be flexibly blended with acrylic resins to meet specific formulation needs.
Additionally, leveraging our deep technical expertise, we provide tailored solutions and customize formulations to align with precise quality standards and performance targets, ensuring optimal compatibility and functionality for diverse end uses.

Storage Condition

Store the product in a tightly sealed container at temperatures between ‌5°C to 40°C (41°F–104°F)‌. Under these conditions, the formulation retains stable performance for ‌over 6 months‌.
Note: Water evaporation may cause irreversible film; therefore, use the product ‌promptly after opening‌ to ensure optimal functionality.

Packaging
Package: 125 KG/Barrel

  Xiamen WangQin Chemical Technology Co., Ltd. is a technology-based enterprise integrating research and development (R&D), production, and operations. Equipped with advanced modern production facilities and comprehensive testing equipment. Since its establishment,WangQin has built its brand and core competitiveness through "technological innovation". Specializing in the R&D, production, and applied research of polymer materials, the company has obtained numerous national invention patents and possesses continuous independent innovation and technological R&D capabilities. 

  Backed by a dedicated team of 50 professionals, WangQin operates state-of-the-art manufacturing infrastructure and comprehensive product testing systems to rigorously uphold ISO9001-certified Quality Management Systems. With an annual production capacity of 20,000 tons for both water-borne and oil-based resins, WangQin Provide multi-field industries application resin material products, from standard resin formulations to custom-tailored resin material solutions designed for diverse market needs.   

Our Products‌:
Acrylic resins, alkyd resins, epoxy resins, polyester resins, amino resins, and other customizable products.

‌Service Fields‌:
Packaging printing, plastic products, metal products, glass products, construction machinery, construction, wood products, and new energy industries.

    While pursuing technological innovation and business growth, WangQin also actively fulfills its corporate social responsibility (CSR). Specializing in the research and development (R&D), production, and applied research of polymer materials, WangQin drives green and sustainable development within the industry by providing high-quality, environmentally friendly polymer matrials products. WangQin strictly adheres to environmental management system certifications to minimize the environmental impact of the production processes. Additionally, WangQin proactively collaborates with industry peers to enhance its R&D capabilities and accelerate the translation and application of scientific achievements, contributing to societal progress. ‌Wangqin demonstrates its corporate social responsibility through tangible actions, exemplifying the accountability and leadership expected of an industry pioneer.

Guided by a philosophy of green and sustainable development, WangQin is dedicated to researching and developing eco-friendly, high-performance new material products. With a senior technical R&D team and deep expertise in polymer materials, coupled with extensive market experience, WangQin consistently introduces innovative products that meet both market demands and environmental standards. These products not only deliver exceptional performance but also significantly reduce environmental pollution, reflecting the company’s profound commitment to sustainability and its proactive implementation of sustainable practices.

    WangQin leads the industry innovation, spearhead the digital transformation of production. By integrating intelligent sensing, big data analytics, and cloud computing technologies, we have achieved fully automated monitoring and management of production processes, significantly enhancing both efficiency and quality control precision. Within our digitalized workshops, every process is precisely controlled, ensuring that each step from raw materials to finished products—adheres to the highest standards. Empowered by digitalization, WangQin drives green intelligent manufacturing and sets a new benchmark for the industry.