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Zhejiang Yisheng New Material Co., Ltd. is a professional enterprise engaged in the design, development, manufacturing, application, and sales of cellulose ether, located in the Shangyu Economic and Technological Development Zone, part of the Hangzhou Bay National Industrial Park. With a core concept of safety, environmental protection, and sustainable development, the company boasts an annual production capacity of 15,000 tons of cellulose ether, offering a complete range of products including HEC (hydroxyethylcellulose), HEMC (hydroxyethyl methylcellulose), and HPMC (hydroxypropyl methylcellulose). Our products serve various sectors such as oil fields, coatings, dry powder mortar, cosmetics, personal care products, medicine, and many others. Yisheng has a global presence, providing stable cellulose ethers and services to customers worldwide.
As a professional China HPS Hydroxypropyl Starch Ether Supplier and HPS Hydroxypropyl Starch Ether Company, The company adheres to the principles of safety and environmental protection as the foundation of its development. It implements and further consolidates safety and environmental protection measures, striving to create green and environmentally friendly production processes, safe and effective control systems, and orderly production management. This approach lays a solid foundation for the company's sustainable development. Yisheng boasts a scientific management mechanism, a comprehensive quality management system, stringent product testing methods, advanced technology, state-of-the-art equipment, and high-quality after-sales service.
Product Overview
EasonZell™ HPS is produced by reacting natural starch with propylene oxide, introducing hydroxypropyl groups that render the starch cold-water soluble and improve its hydrophilicity. The resulting product integrates smoothly into aqueous mortar systems, contributing to rheological body, lubricity, and extended workability without the full cost burden of pure cellulose ether.
HPS is most widely used as a partial replacement for HPMC in putty powder and wall filler formulations, typically at a ratio of 1:3 to 1:5 (HPS:HPMC). This blend strategy maintains performance while significantly reducing formulation cost. Our HPS grades are characterized by controlled substitution degree and particle size to ensure reliable performance in both manual and automated mixing environments.
Specification
| Parameter | Typical Value / Range | Test Method |
| Appearance | White to light yellow powder | Visual |
| Viscosity (10% aq., 25°C) | 200 – 800 mPa·s | Brookfield |
| Degree of Substitution (DS) | 0.05 – 0.20 | NMR / Titration |
| Moisture Content | ≤ 12% | Drying method |
| pH (10% solution) | 6.0 – 8.0 | pH meter |
| Whiteness | ≥ 85% | Colorimeter |
| Particle Size | 95% pass 100 mesh | Sieve analysis |
| Recommended Dosage in Putty | 0.5 – 2.0% of dry blend | — |
Application
EasonZell™ HPS finds application in the following areas:
- Interior wall putty powder — primary use as a co-thickener with HPMC, contributing to smooth spreadability and good surface finish.
- Exterior wall putty — used at moderate dosage to maintain workability without compromising weather resistance.
- Gypsum-based products — acts as a lubricant and rheology modifier alongside cellulose ether in joint compounds and skim coat.
- Cementitious self-leveling underlayments — low-viscosity grades provide flow improvement.
Usage notes: HPS should not be used as a sole thickener; always blend with HPMC or HEMC for reliable water retention. Avoid storage in humid conditions as starch is hygroscopic and may cake if moisture exceeds 14%.
Email: sarah@ys-cellulose.com
Phone: +86-18067879812 / +86-575-82966958
