Trapylen® 691 is a specially developed low chlorinated polypropylene. It has outstanding affinity to polyolefinic plastics such as polypropylene, PP-modified EPDM thermoplastic rubbers and to polyethylene. TRAPYLEN® 691 was mainly developed for PE-coatings. It can be used directly as binder or after effective dilution, as primer. The cured film is fairly soft.

Product Type: Primer

Chemical Family: Chlorinated Polyolefins (CPO)

Technical Data Sheet

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Identification & Functionality

Product Type

Features & Benefits

Product Highlights
  • TRAPYLEN® 691 is a specially developed low chlorinated polypropylene. It has outstanding affinity to polyolefinic plastics such as polypropylene, PP-modified EPDM thermoplastic rubbers and to polyethylene.
  • TRAPYLEN® 691 was mainly developed for PE-coatings. It can be used directly as binder or after effective dilution, as primer. The cured film is fairly soft.

Applications & Uses

Applications
  • Uses: TRAPYLEN® 691 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 in the automotive industry, preferably for interior panels.
  • Application: Using TRAPYLEN® 691 as a primer dilute the solution with toluene to max. 10% 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®691 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 20 g/m².

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Viscosity350mPa.s-
Chlorine Content20.5%-
Chemical Composition
ValueUnitsTest Method / Conditions
Solid Content20%-

Packaging & Availability

Regional Availability
  • Canada
  • Mexico
  • USA
Packaging Information

iron drums of 140 kg

Storage & Handling

Storage and Shelf Life Conditions
  • At least 12 months in closed packing at 15 °C.
  • Gel formation is possible at lower temperatures.
  • Before use it is strictly recommended to keep the drums at 50°C for a while until the solution returns to liquid phase.
  • Strong agitation can support this.