P – 411-60%
SATURATED POLYESTER RESIN
P-411 is high quality & extremely flexible linear polyester resin developed for Can coatings, sheet fed metal decorating and coil coatings applications.
- Good substrate adhesion
- Excellent flexibility
- Good UV ink adhesion
- Good exterior durability
- Good exterior durability
- Good film forming properties
P-411 is linear oil free polyester developed for use in Can Coatings, sheet fed Metal Decorating, coilcoatings and General Industrial applications.
P-411 is compatible with a wide range of melamine resins and is typically hexamethoxymethylmelamine and partially methylated melamine.
For an optimum performance with respect to level of cure, flexibility, hardness and impact resistance,a combination of P-411 with hexamethoxymethyl melamine resin at ratio of 70:30 to 85:15 on solidresin content is suggested.
To promote cure, the use of between1% to 5% of acid catalyst is recommended, e.g. paratoluenesulphonic acid, calculated on melamine solids.
Variation in the levels of P-411 and the type of amino resin will modify the overall performance ofthe coating. Increasing the level of amino resin (and catalyst) will generally tend to increase thehardness and solvent resistance of the coating but may compromise flexibility.
For Coil Coating:
Applications an 85:15 to 80:20 ratio, on solids, with hexamethoxymethyl melamine resin isrecommended with 2% PTSA catalyst on amino level.
For Metal Decorating:
On solids, of 72:18:10 OFPE: melamine: epoxy resin (epoxy equ. »500) with 2% PTSA solids amino issuitable.
Part methylated amino resin can be used in place of hexamethoxymethyl melamine and will developvery good hardness & solvent resistance but at the expense of flexibility.
General industrial enamels:
Can be formulated with 70:30 to 80:20 ratios with hexamethoxymethyl melamine or partmethylated melamine, with 2% PTSA catalyst
|Viscosity as such in Brook Field RVT /S – 4, RPM – 12 at 25°C Temperature||80 – 120 Poise|
|Color on Gardner Scale||4 Max|
|Acid Value (mg KOH/gm)||10 Max|
|Hydroxyl Value||25 + 5|
|Solvent||C - 10|
|n-Butyl Acetate||Complete Soluble|
|MTO /LAWS||Not Soluble|
|P – 411||60 ± 2% in C – 10|
Suggested Curing Schedules
|Coil Coating||232°C - 240°C Temperature||As per Requirement|
|Metal Decorating||160°C - 200°C Temperature||10 Minutes|
|General Industrial||150°C Temperature||30 Minutes|
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