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Polyglutamic acid and aminobutyric acid are ecological additives produced by microbial fermentation. They are all water soluble, environmentally friendly, completely degraded in soil without residue and natural biological polymers.
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CHENGYIGAI is a premium industrial chemical line specializing in high-purity cellulose ethers, including Hydroxypropyl Methylcellulose (HPMC) and Hydroxyethyl Methylcellulose (HEMC). Engineered for diverse industrial applications, these products offer exceptional thickening, adhesion, and stabilization properties, ensuring reliability in demanding processes. Manufactured via advanced etherification with a degree of substitution (DS) control within ±0.02, the products meet the strictest quality standards for critical applications.
High Purity & Consistency
USP/NF and Ph. Eur. compliant, with particle size distribution ≤100 mesh (90% passing 150 microns). Heavy metal content <1 ppm, chloride content <0.1%, ensuring safety in pharmaceutical and food applications. Batch-to-batch viscosity variation <5%, crucial for automated mixing systems.
Multi-Functional Properties
Thickening: Viscosity ranges from 1,000–100,000 mPa·s (measured at 2% solution, 20°C, Brookfield RVT), adjustable via molecular weight and substitution patterns. Low-viscosity grades (1,000–5,000 mPa·s) are ideal for coatings, while high-viscosity grades (50,000–100,000 mPa·s) enhance water retention in cementitious materials.
Adhesion: Improves bond strength in tile adhesives by 20–30%, reducing hollow tiles in ceramic installations. In paint formulations, HPMC acts as a protective colloid, stabilizing pigment dispersion and preventing settling.
Water Retention: Maintains moisture in cementitious materials for 4–6 hours, preventing early-stage drying and cracking. This property is critical for refractory mortars used in high-temperature kilns.
Wide Compatibility
Soluble in cold water (≤40°C) via powder-in-water or solution-in-water methods, with dissolution time <10 minutes for agitated systems. Compatible with most inorganic salts (e.g., sodium chloride, calcium sulfate) up to 15% concentration.
Non-ionic nature ensures stability in acidic (pH 3–11) and alkaline (pH 12–13) environments, outperforming anionic thickeners that degrade in high pH.
Sustainable Sourcing
Derived from FSC-certified wood pulp, with a cradle-to-gate carbon footprint 40% lower than synthetic thickeners. Production facilities operate under ISO 9001:2015 and ISO 14001:2015, with 95% of wastewater recycled for process use.
Construction:
Mortars: Tile adhesives (improving slip resistance), self-leveling compounds (viscosity control), and thermal insulation mortars (water retention).
Concrete Admixtures: Reduces water absorption in concrete by 15%, enhancing durability in marine environments.
Coatings:
Paints: Improves brushability and sag resistance in latex paints, with dosage rates of 0.3–0.5%.
Protective Finishes: Acts as a binder in fire-resistant coatings, maintaining film integrity at 500°C for 30 minutes.
Pharmaceuticals:
Tablet Coatings: Sustained-release formulations using HPMC with a DS of 1.2–1.4, controlling drug release over 8–12 hours.
Capsule Binders: Provides flowability and compressibility in powder blends, reducing capping defects in tablet production.
Q: What is the shelf life of CHENGYIGAI products?
A: 24 months when stored in original sealed bags in a cool (≤25°C), dry place (relative humidity ≤60%). Once opened, store in airtight containers to prevent moisture absorption.
Q: Can it be used in food applications?
A: Yes, food-grade HPMC (GRAS status, FCC IV compliant) is available for emulsifiers in salad dressings (0.1–0.2% dosage) and stabilizers in frozen desserts, improving texture and melt resistance.
Q: How to dissolve HPMC in water?
A: Gradually add the powder to vigorously agitated cold water (10–30°C) to prevent clumping. For large-scale dissolution, use powder injection systems with high-shear mixers (2,000–3,000 RPM).
Q: What is the typical dosage in mortars?
A: 0.1–0.5% by weight, depending on desired viscosity and water retention. For tile adhesives, 0.3% HPMC (100,000 mPa·s) balances open time (30–45 minutes) and slip resistance.
Q: Does HPMC affect cement hydration?
A: At recommended dosages (<0.5%), it delays initial set by 10–15 minutes without compromising final strength, as confirmed by ASTM C109 compressive strength tests.
