The product is a aqueous solution of copolymer of vinyl phosphonic acid and acrylic acid as a metal surface treatment agent
Specification
| Appearance（25℃） | clear to light-yellow liquid |
| Solid | 38-42% |
| PH（5%,aq. 25℃） | < 3.0 |
| Molecule Weight | 40000-80000 |
| Viscosity（25℃,cps） | < 1000 |
| Density（25℃,g/cm³） | about 1.18 |
Application
This product is useful in treating the surfaces of metals. It can bring solutions for:
Ø Improve paint adhesion and anti-corrosion
Ø Improve multi-metal, multi-coat performance.
Ø Simpler formulations and processes
Ø Better environmental and regulatory profile
Dosage
The dasage is about 0.1-5% of the total content.
Adding Method
Generally, it is diluted directly with deionized water to 0.1-5%, depending on the equipment or spray or impregnation, the temperature is recommended 50-70°C, and the treatment time is 5-60 seconds.
Note: The concentration, working temperature and treatment time can be adjusted according to the actual situation.
Shelf life
PM6940 has a shelf life 365days in sealed container.
