Trapylen® 135 S is a chemically modified low-chlorinated polypropylene celebrated for its remarkable affinity to polyolefinic plastics, including PP, PP/EPDM-blends, and, with certain limitations in adhesion strength, PE. Versatile in its applications, it serves as either a straight primer or an adhesion promoter for base coats and pigmented primers. Its primary use extends to paintings and coatings for molded parts and sealing profiles in the automotive industry, encompassing applications such as bumpers, side panels, and door seals. Additionally, Trapylen® finds utility in adhesives and flocking agents for door seals. Moreover, it is employed in industrial settings where PP-based plastics undergo chemical pretreatment.

Functions: Adhesion Promoter, Coupling Agent

Product Type: Primer

Application Area: Automotive Bumpers

Application Method: Brush, Dip Coating, Spray

Technical Data Sheet

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Identification & Functionality

Product Type
CASE Ingredients Functions

Applications & Uses

Application Area
Application Method
Compatible Substrates & Surfaces
Coating Type
Applications
  • TRAPYLEN® 135 S is used either as a straight primer or as an adhesion promoter for base coats and pigmented primers. Its principal use is in paintings/coatings for molded parts and sealing profiles in the automotive industry, such as bumpers, side panels and door seals.
  • TRAPYLEN® 135 S can also be used in adhesives and flocking agents for door seals. Furthermore it is used in industrial applications where PP based plastics are chemically pretreated.
  • Using TRAPYLEN® 135 S as a primer dissolve the resin in xylene to 5 % solids. This primer can be applied by spraying, dipping, brushing or printing. Drying conditions: 30 s at 80 °C, residual quantity of resin about 3 - 4 g/m².
  • When using TRAPYLEN® 135 S as adhesion promoter in base coats/pigmented primers, the compatibility of the system must be checked. The resulting base coat can be applied by spraying, dipping, brushing or printing if the system allows it. Drying conditions: Usually 30 min at 80 °C, residual quantity about 15 g/m².
Dissolving Process
  • Place 1 part of TRAYPLEN® 135 S and 2 parts of solvent into a dissolver and stir the resin to dissolve it by friction.
  • The temperature of the system should be raised to 60 °C and held there for at lea st 3 hours.
  • After finishing the dissolving process adjust the solids content to e.g. 15 % and filter the solution.

Properties

Color
Physical Form
Appearance
Yellowish orange granules
Soluble in
Ketones, Aromatics, Butyl acetate
Insoluble in
Aliphatics, Alcohols
Typical Properties
ValueUnitsTest Method / Conditions
Chlorine Content22%-
Dynamic Viscosity (at 15% in xylene)50mPa.s-
Softening Point87°C-

Packaging & Availability

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

Carton boxes with PE-inliner of 20 kg.

Storage & Handling

Shelf Life
12 months
Storage and Shelf Life Conditions
  • Keep away from moisture and direct sunlight.
  • At least 12 months in closed packing at 15 °C.