Carbopol® Ultrez 20 is the flagship rheology modifier in Lubrizol's Ultrez series. It uses "Advanced Polymer Architecture" technology and is designed for high-end formulations that require extreme environmental stability and precise rheology control. Its breakthrough molecular structure provides industry-leading performance while maintaining the fast dispersion characteristics of the Ultrez series.
0.5% addition viscosity range: 4,000-8,000 cP (Brookfield RV, Spindle #3, 20rpm) Provides a light texture, suitable for formulations that require fluidity
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Intelligent suspension architecture
Self-organizing three-dimensional network:
Suspension capacity: 15-20% insoluble matter (such as zinc oxide, titanium dioxide) Thermal cycle test (-20℃~50℃) pass rate 100%
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Ultra-wide formula adaptability
Parameter Performance Improved compared to U10 pH range 3.0-9.0 (optimal 5.5-7.5) Acid resistance ↑30% Electrolyte tolerance 8% NaCl Viscosity retention rate ＞80% Salt compatibility ↑15% Solvent compatibility Tolerance to 25% ethanol Alcohol system stability ↑20%
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Sustainable production advantages
Energy consumption per unit output: 0.7kW·h/kg (the lowest in the industry) Won the 2024 ACES Sustainable Chemistry Award Biodegradation rate (OECD 301B): 85%
Dissolution Process:
1. Basic formula (0.5% addition)
Ingredients Content
Carbopol 941 0.5%
Deionized water to 100%
Neutralizer (TEA) q.s. (adjust pH to 5.5-7.0)
2. Preparation steps
Pre-dispersion:
While stirring at 400-600rpm, slowly sprinkle Carbopol 941
Continue stirring for 20-30 minutes until completely dispersed
Neutralization and thickening:
Slowly add neutralizer (10% TEA aqueous solution is recommended)
Adjust pH to the target range (5.5-7.0 is best)
Post-treatment:
Add active ingredients (temperature <50℃)
Filter if necessary (100-200 mesh)
FAQ
Q1: Can U20 be used in silicone oil systems?
A:Compatibility with cyclopentasiloxane: Recommended order of addition: U20 first, then silicone oil Viscosity retention: 92% (10% silicone oil content)
Q2: How to solve the slight fluorescence phenomenon?
A: Confirmation: Fluorescent substance detection of raw material batches (need to be <0.1ppm) Avoid compounding with ingredients containing fluorescent brighteners
Q3: How does 0.5% perform under extreme temperatures?
A: Test data: 5℃ viscosity: 32,000-36,000cP 45℃ viscosity: 24,000-28,000cP Viscosity deviation after returning to 25℃ <3%
