Trapylen® T 8380 is typically applied via spray coating or, preferably, using a mill-point roller. This ready-to-use primer is based on a chemically modified, low-chlorinated polypropylene. It boasts a relatively high film softening temperature, along with excellent film flexibility and resistance against thermal decomposition.

Functions: Adhesion Promoter, Coupling Agent

Product Type: Primer

Application Method: Spray

Technical Data Sheet

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Identification & Functionality

Product Type
CASE Ingredients Functions

Features & Benefits

CASE Ingredients Features
Ready-to-Use Product Features
Product Highlights
  • TRAPYLEN® T 8380 is a ready for use primer based on a chemically modified, low chlorinated polypropylene.
  • It has a comparatively high film softening temperature, good film flexibility and resistance against thermal decomposition.
  • TRAPYLEN® T 8380 has outstanding affinity to polyolefinic substrates and is especially developed as adhesion promoter for untreated thermoplastic polyolefinic elastomer foils. Such TPO/TPE blends shall replace former PVC/ABS materials in the automotive industry, however due to the low surface tension and poor wetting characteristics they require treatment prior to painting with PU or other lacquer systems.

Applications & Uses

Application Method
Compatible Substrates & Surfaces

TRAPYLEN® T 8380 is usually applied by spray coating or preferably by mill point roller.

  • Applied quantities: 0.5 - 1.0 g/m² (solid after drying)

These figures give usual spread; most effective thickness has to be investigated by individual tests.

  • Drying : 10 - 15 min at room temperature or 30 - 60 s at 50 - 70°C


Physical Form
Low viscous slightly yellowish solution
Typical Properties
ValueUnitsTest Method / Conditions
Polymer Content9.5 - 10.5%-
Solvents (in total, consisting of toluene)89.5 - 90.5%-
Solvents (in total, consisting of diacetone)80%-
Solvents (in total, alcohol)10%-
Chlorine Content25.5 - 27.5%-
Viscosity (at 20°C, 4 mm)13 - 15secondsDIN/FORD cup
Flash Point4 - 5°CDIN 53213 Closed cup
Drying Conditions (at room temperature)10 - 15minutes-
Drying Conditions (at 70°C)30 - 60seconds-
Residual Quantity of Resin0.5 - 1.5g/m²-

Packaging & Availability

Packaging Type
Regional Availability
  • Canada
  • Mexico
  • USA
Packaging Information

Iron drums of 170 kg net or other packing on request

Storage & Handling

Storage and Shelf Life Conditions
  • Sanitary care and fire hazards cautions have to be taken with respect to toluene and other solvent.
  • Dried film is harmless and non toxic.
  • Storage time of TRAPYLEN® T 8380 is min. 6 months at room temperature.