SYNRESIN PF 997
Butylated phenol formaldehyde resin,
Principal properties
Good adhesion to most metals and very good chemical resistance. Minimum stoving temperature 180C.
Applications
Chemical resistant coatings for drums and bobbins, food tins.
Composition ----------------------------- Combinations
| Solids content,% | 60 | For alkali resistance coatings | Add hard phenolic resin | |
| Solvent | n-Butanol | For acid resistant coatings | Add SYNRESIN SOY - 60 |
Physical constants ----------------------------- Compatibility
| Viscosity as such at 25C | 2-5 P | Amino resins | Complete | |
| Colour | 13 max. | Long oil alkyds in M.T.O. | Limited | |
| Specific gravity d20/4 | 0.99 | Short oil alkyds in Xylene/Toluene | Complete |
Solubility
| M.T.O. | Insoluble( 1 : 5) |
| Xylene | Complete |
| n-Butyl acetate | Complete |
| Methyl ethyl ketone | Complete |
| n-Butanol | Complete |
Delivery form
| SYNRESIN PF 997 | 65% in Butanol |
STARTING POINT
Varnish, resistant to boiling alkalis :
Kg. |
|
| SYNRESIN PF 997 | 62.10 |
| Hard phenolic resin | 6.20 |
| Xylene | 6.20 |
| Toluene | 22.90 |
| n-Butanol | 2.60 |
100.00 |
|
| Dissolve hard phenolic in
xylene and mix this solution with SYNRESIN PF 997 Add solvents. |
|
| Specific gravity d20/4 | 0.96 |
| Viscosity, Ford cup 4 (20C) sec | 40 |
| Application in three coats | |
| Stoving schedule | |
| 1st Coat | 10 min./170C |
| 2nd Coat | 10 min./170C |
| 3rd Coat | 30 min./190C |
This system has very good resistance to a boiling solution of NaOH in water (2h).
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