L216 Curing Accelerator for Powder Coating

L216 is a generic accelerator, not only accelerate the curing for epoxy/polyester hybrid powder, but also accelerate the curing for pure polyester system. The effects of improving curing, anti-yellowing are very obviously.

1.Technical parameters 

Appearance: white powder 

Volatile content: = 0.5%

2.Application

Used for hybrid or TGIC/polyester powder coating. 

3.Use method 

Dosage: 0.1-0.7%. Mixed with other materials and extruded. 

The gel time is reducing constantly while the dosage of L216 is increasing.

The data is as below: 

1

2

3

4

5

Powder composition

100g

100g

100g

100g

100g

L216

0g

0.1g

0.3g

0.5g

0.7g

Gel time for hybrid

150 seconds

89

77

55

46

Gel time for pure polyester powder

110 seconds

75

29

21

14

Leveling

smooth

smooth

smooth

smooth

smooth

General curing condition: 160° C/10 min

Low temperature curing condition for hybrid: 130° C/30 min, L216 has some selectivity to polyester.

4.Characteristics 

Accelerate curing for hybrid & polyester

Anti-yellowing, excellent flow

Reduce curing temperature

Improve mechanical properties 

5.Storage 

Store in cool and dry place. Keep away from fire and heat sources. 

6.Packaging. 

Kraft paper bag (polyethylene liner). Net weight:25kg/bag