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Acrylic Impact Modifiers H Series
Product Description:
H series Impact modifier is a Weatherable Acrylic Impact Modifier. Mainly used for rigid PVC. It is a “core-shell” structure modifier which cross-linked poly butyl acrylic as “core” and graft methyl methacrylate as “shell). It not only improves impact resistance performance, but also increases the surface glossy, especially the weatherability. It is special suitable for outdoor products. Widely used in PVC profile, sheet, pipe, pipe fittings and other injection products
Technical Data
Index | H-21, H-22, H-61 | H-55 | H50 |
Appearance | White flowing powder | ||
Particle size (20 mesh passing percentage) | ≥98 | ||
Volatiles content (%) | ≤1.5 | ||
Bulk density(g/cm3) | 0.40-0.55 | 0.45-0.56 | 0.35-0.55 |
Advantages
Compared to CPE and other impact modifiers, H series have following advantages:
1. Best impact resistance efficiency and impact strength reservation, excellent weatherability.
2. Improves product surface gloss greatly, with wide processing range for high speed extrusion.
3. Improves impact strength and keep rigidity at the same time.

Product Classify and Properties
Model | Normal temperature | Low temperature | Characteristic |
Impact property | Impact property | ||
H-21 | **** | **** | Good processability |
H-22 | **** | **** | Fast fusion, good gloss |
H-50 | ***** | ***** | Excellent low temperature impact properties |
H-55 | **** | ***** | Excellent processability |
H-61 | ***** | ***** | Excellent impact properties |
Application Characteristic
Item | H-21, H-22 | H-50 | H-61 | H-55 | |
Properties | For non-transparency products | ||||
Application | Profile, sheet, pipe, pipe fittings etc. | ||||
Recommended Dosage | Impact Modifier | 5-8 | 4-7 | 4-7 | 5-8 |
Processing Aid | 0 | 1.5-1.0 | 0.5-0.8 | 0 | |






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