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Introduction to Polyester
Chip Products
Filament Grade Semi-dull Polyester Chip
|
Item |
Excellent Grade |
First Grade |
Qualified Grade |
Intrinsic Viscosity dl/g
|
0.646±0.009 |
0.646±0.015 |
0.646±0.025 |
Melting Poing ℃
|
≥260 |
≥259 |
≥257 |
Colour(b Value)
b
|
4±2 |
4±3 |
4±4 |
-COOH
mol/t
|
≤30 |
≤35 |
≤40 |
Water
%
|
≤0.4 |
≤0.4 |
≤0.5 |
Agglomerate Particles(≥10)
/mg
|
≤1.0 |
≤3.0 |
≤6.0 |
DEG
%
|
≤1.2 |
≤1.3 |
≤1.5 |
Tio2
%
|
0.30±0.05 |
0.30±0.05 |
0.30±0.06 |
Ash
%
|
≤0.07 |
≤0.07 |
≤0.08 |
Fe
PPM
|
≤4 |
≤6 |
≤8 |
Irregular Chip and Powder %
|
≤0.4 |
≤0.5 |
≤0.6 |
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