UNI-REZ™ 2521

1 of 47 products in this brand
UNI-REZ 2521 (formerly UNI-REZ 521) thermoplastic polyamide resin is designed to impart a high degree of thixotropy to alkyd resins. Thixotropy can be achieved by reacting UNI-REZ 2521 with the alkyd resin at temperatures between 190-210°C. UNI-REZ 2521 can be easily processed and achieves its clear point on dilution before attainment of maximum thixotropy.

Functions: Anti-Sagging Agent, Binder & Resin

Chemical Family: Polyamides

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Identification & Functionality

Chemical Family
CASE Ingredients Functions
Technologies

Features & Benefits

CASE Ingredients Features
Product Highlights
  • Imparts a high degree of thixotropy
  • Medium to high gel strength
  • Fast gel recovery
  • Good flow and leveling

Applications & Uses

Applications
  • Medium and long oil alkyds
  • Aliphatic and low aromatic solvents
  • Anti-pigment settling
  • Anti-sagging
  • High-gloss paints

Properties

Physical Form
Sales Specifications
ValueUnitsTest Method / Conditions
Acid Number6 maxmg KOH/gAQCM 001
Amine Number6 maxmg KOH/gAQCM 069
Color, 35% in 1:1 n-Butanol/Toluene7 maxGardnerAQCM 002
Softening Point110 - 120°CAQCM 003
Viscosity Brookfield at 160°C80 - 140cpsAQCM 004
Typical Properties
ValueUnitsTest Method / Conditions
Acid Number3.0mg KOH/gAQCM 001
Amine Number3.5mg KOH/gAQCM 069
Color, 35% in 1:1 n-Butanol/Toluene5.0GardnerAQCM 002
Softening Point113.0°CAQCM 003
Viscosity Brookfield at 160°C100.0cpsAQCM 004
Recommended usage level (on solid resin content)2 - 9%N/A
Recommended usage level (on solid resin content)2-9%N/A
Recommended Reaction Temperature190 - 210°CN/A
Time to clear point (long oil alkyd, 7% UNI-REZ 2521)2.5°CADVM 224
Gel strength (Texture Analyzer, long oil alkyd, 7% UNI-REZ 2521, 55 wt% in white spirit)900 gramADVM 550

Packaging & Availability

Packaging
  • This product is available in 40 / 50 lbs paper bags

Storage & Handling

Storage

In unopened, original containers UNI-REZ 2521 polyamide has a shelf life of 36 months at 20 to 25°C.