|
AdSperse 868
The
AdSperse range of Fischer-Tropsch hydrocarbons has been developed
specifically for use as dispersing aids in the manufacture of polyolefin
masterbatches and colour concentrates. Fischer-Tropsch hydrocarbons
are highly compatible with polyolefins.
THE
FUNCTION OF DISPERSING AIDS IN COLOUR MASTERBATCHES:
Dispersion involves the breaking up of pigment agglomerates into
primary particles/crystals by shear forces. Pigments only develop
their full colour potential when the agglomerate form, in which
they are supplied, is broken down into a more uniform state consisting
of primary particles/crystals. Dispersing aids are used to wet the
pigments, to penetrate the small hollows between agglomerated particles
and to facilitate the shear-related breakdown of the solid, hard
agglomerates. Even after breaking down the agglomerate, the attractive
forces between the primary particles/crystals may lead to reagglomeration.
Dispersing agents are also used to stabilise the dispersed pigment
particles to prevent reagglomeration in the polymer melt.
KEY
BENEFIT:
Effective wetting or coating of pigment, facilitating agglomerate
break down and preventing the reagglomeration of particles.
ADDITIONAL BENEFITS:
Reduces the effective viscosity of polymeric carrier during extrusion
leading to higher outputs during masterbatch production.
Processing benefits observed by converters using masterbatch based
on AdSperse products include better pigment dispersion, increased
outputs and improved gloss.
AdSperse
868 is recommended for use in colour, white and black masterbatches
in LLDPE.
|
AdSperse
868
|
|
Properties
|
Test
Method
|
Units
|
Specification
|
| Congealing
Point |
ASTM
D 938
|
°C
|
102
- 108
|
| Drop
Melting Point |
ASTM
D 3954
|
°C
|
117
(Typical)
|
| Needle
penetration at 25°C |
ASTM
D 1321
|
1/10
mm
|
1
max.
|
| Color |
Sasol
Wax 037
|
Saybolt
|
0
min.
|
| Centrifuge
Test |
Sasol
Wax 003
|
-
|
Free
from foreign material
|
Packing:
AdSperse 868 is supplied in the form of coarse powder packed in
20 kg paperbags.
This
product info is indicative and does not include any guarantee.
|