Enhanced TDS
Identification & Functionality
- Carrier
- Chemical Family
- CASE Ingredients Functions
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Product Highlights
- TRAPYLEN® 777 is a modified, low chlorinated polypropylene with reactive groups in order to crosslink e.g. with Desmodur N 3390, Z 4370 or other polyisocyanates. The polymer is dissolved in a mixture of toluene, cyclohexane and butylacetate (ratio: 70+20+10). Main merit is its good adhesion strength on polyolefinic plastics. Adhesion and film flexibility of TRAPYLEN® 777 can be increased when adding maleic modified CPO's like TRAPYLEN® 130 X.
Applications & Uses
- Compatible Substrates & Surfaces
- Coating End Applications
- Drying Procedure
- Drying condition of 30 s at 80 - 100 °C are sufficient for film forming of TRAPYLEN® before application of the base coat or top coat.
- A drying temperature above the softening point of TRAPYLEN® is recommended in order to achieve the best results in terms of adhesion strength. Typical drying condition for coating automotive bumpers is 30 mins at 80 °C.
- Product Uses
- TRAPYLEN® 777 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 moulded parts in the automotive industry, such as wheel caps or interior panels.
- Product Application
- Using TRAPYLEN® 777 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® 777 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
- Soluble in
- Water
- Typical Properties
Value Units Test Method / Conditions Chlorine Content 20 % - Solid Content 30.0 % - - Note
- 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.
- Also available as TRAPYLEN® 780 X with xylene and butyl acetate as solvents.
Packaging & Availability
- Regional Availability
- Packaging Information
- Iron drums of 170 kg.
Storage & Handling
- Storage Conditions
- At least 12 months in closed packing at 15 °C