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CRA® 21 is an exceptional controlled release additive specifically formulated for adjusting the release force in solvent-based DEHESIVE® systems. As a solvent-based additive, it delivers high release levels, making it highly efficient in its intended application. Additionally, CRA® 21 exhibits good release stability, ensuring consistent performance over time.

Functions: Release Agent

Labeling Claims: Animal Products-free, BSE-free, TSE-free

Features: Good Mold Release, Good Release Properties, High Efficiency, Highly Efficient

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Composite Materials Functions
Industrial Additives Functions

Features & Benefits

CASE Ingredients Features
Specific Features
  • Controlled Release Additive
  • Solvent-based

Applications & Uses

Compatible Substrates & Surfaces
Industrial Additives End Use
Applications
  • Composite Release Coatings
  • Graphics
  • Industrial Applications
  • Label
  • Release Coatings
  • Tapes & Electronics
Application Details

CRA® 21 can be processed together with nearly all solvent-based DEHESIVE® products. It is miscible with them in all proportions. Mixtures of CRA® 21 and DEHESIVE® are ideal for the production of release paper and PSA-laminates. Suitable substrates include PE-laminated paper, polyester films (PET) and papers. Because of the high efficiency and stable release characteristics of CRA® 21, the product is ideal for the production of double-sided release liners.

Processing

Batches of coating compound must be prepared in the order given below

  1. First pour in solvent-based DEHESIVE® polymer
  2. Add solvent and stir slowly until the mixture is homogeneous
  3. Add CRA® 21 release modifier and stir slowly until the mixture is homogeneous
  4. Thoroughly stir in Crosslinker to this mixture
  5. Slowly stir in catalyst.

Local over-concentrations must be avoided.

Additional Information

To obtain exceptionally high release forces, CRA® 21 can also be processed without DEHESIVE® . In this case, the amounts of catalyst and crosslinker required for efficient curing may vary from DEHESIVE® containing formulations. However, we recommend the adjustment of specific formulations to optimize final coating properties for the intended use.

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Density (at 20°C, 1013 hPa)0.962g/cm³
Dynamic Viscosity (at 25°C)3mPa·s
Flash Point4°CDIN 51755
Ignition Temperature535°CDIN 51794
Properties
  • High release levels
  • Good release stability

Regulatory & Compliance

Packaging & Availability

Country Availability
Regional Availability
  • Africa
  • Asia
  • Europe
  • Latin America
  • Middle East
  • North America
  • Oceania