Trapylen® 145 X 2 is a chemically modified low-chlorinated polypropylene recognized for its remarkable affinity to polyolefinic plastics, including PP, PP/EPDM-blends, and, to a limited extent in adhesion strength, PE. Notably, the resin in Trapylen® 145 X 2 boasts a higher molecular weight within the range of 110,000 and a significantly lower chlorine content compared to other maleic-modified Trapylen® grades. These distinctive properties contribute to improved adhesion as well as enhanced heat and chemical resistance. However, it's important to note that these enhancements come at the cost of lower solubility and compatibility.

Functions: Adhesion Promoter, Coupling Agent

Product Type: Primer

Application Area: Automotive Bumpers, Side Panels

Application Method: Brush, Dip Coating, 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® 145 X 2 is a chemically modified low chlorinated polypropylene with outstanding affinity to polyolefinic plastics such as PP, PP/EPDM-blends and, with limitations to adhesion strength, to PE.
  • The resin in TRAPYLEN® 145 X 2 has a higher molecular weight in range of 110 000 and a much lower chlorine content in comparision to other maleic modified TRAPYLEN® grades. These properties improve the adhesion and as well the heat and chemical resistance but lower the solubility and compatibility.

Applications & Uses

Application Method
Compatible Substrates & Surfaces
Coating Type

Application: TRAPYLEN® 145 X 2 is a ready to use primer with 2 % solids and can be applied by spraying, dipping, brushing or printing,

  • Drying conditions: 30 s at 80°C (100°C), residual quantity of resin about 3 - 4 g/m²

Uses: TRAPYLEN® 145 X 2 is used as a straight primer. Its principal use is for treatment of molded parts and sealing profiles in the automotive industry, such as bumpers, side panels and door seals. Furthermore it is used in industrial applications where PP based plastics are chemically preheated.


Physical Form
Low viscous yellow liquid
Typical Properties
ValueUnitsTest Method / Conditions
Solid Content2%-
Chlorine Content15%-
Softening Point105°C-
Drying Conditions (at 80°C)30seconds-
Residual Quantity of Resin3 - 4g/m²-

Packaging & Availability

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

Iron drums of 170kg 

Storage & Handling

Storage and Shelf Life Conditions

At least 6 months in closed packing at 15 °C.