Paints and Coatings Auxiliaries for the coating of surfaces - Clariant

Examples of formulations
for special applications
Matting
Nitrocellulose lacquers
Nitrocellulose lacquers, whose main
component is cellulose nitrate, are
still used on a wide scale for furniture
lacquers. The matting agent used in
these lacquers is almost exclusively
wax. The most important products for
this purpose are Licowax PE 520,
Ceridust 9615 A and Ceridust 6721.
When low-viscosity curtain-coating
paints are manufactured, it is advisable
to incorporate Licowax PE 520 by hot
precipitation (page 18).
Ceridust 9615 A or Ceridust 6721 are
better suited to paints applied by
spray or brush. It tends to settle out
slightly when left to stand for some
time but can be readily redispersed
by stirring. To prevent settling out as
far as possible it is advisable to use
5 % of a 10 % dispersion with Licowax
PE 520.
Gloss
160
140
120
100
80
60
40
20
0
0.5
Frequently the tendency of Ceridust
9615 A or Ceridust 6721 to settle is due
to inadequate wetting of the individual
wax particles. In this case we recommend
that a paint /wax concentrate
should be prepared. The following
procedure is recommended: incorporate
25 to 30 parts by weight Ceridust
in 75 to 70 parts by weight of the paint
to be matted and continue to stir until
a homogeneous paste is obtained.
1.0 2.0
p. Wax
3.0
4.0
without the addition Ceridust 9615 A Licowax PE 520
of wax 10 % dispersion
Figure 2:
NC lacquer Wet film thickness 60 µm Gloss 60°.
After being allowed to stand for 10
to 26 hours this paste is diluted with
the paint in question or is added to
the paint to be matted.
Guide formulation
Nitrocellulose wool E 510 12
Dioctyl phthalate (DOP) 1
Vialkyd ®+ AC 371/70 X 5
Alresat ®+ KM 313 2
Butyl acetate 10
Ethyl acetate 25
n-Butanol 15
Xylene 30
Parts by weight 100
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