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Sicopal ® / Sicotan ®
Inorganic pigments
Sicopal ® pigments
These bismuth vanadate pigments are brilliant, greenish yellow
colorants whose applications include the manufacture of leadfree,
high-quality powder coatings. Special features of the
Sicopal ® Yellow pigments are high purity of shade and excellent
hiding power. Their resistance to weathering is outstanding both
in full shades and in reductions with titanium dioxide. Sicopal ®
Yellow pigments have proved to be successful substitution
products for lead pigments. Shades such as RAL 1021 and RAL
1028, which are difficult to achieve without using lead-based
pigments, are easily obtained with Sicopal ® Yellow pigments.
The standard pigment is Sicopal ® Yellow L 1100. Sicopal ® Yellow
L 1120 has a slightly redder with improved chroma. It is more
heat-resistant in Primid ®1 crosslinked powder coatings and its
hiding power and weather fastness are also outstanding.
To match reddish shades we recommend the much redder
alternative Sicopal ® Yellow L 1600, whose hue often allows the
amount of organic shading pigments in the formulation to be
reduced. The color of bismuth vanadate pigments is stable at
normal baking temperatures (180 °C - 210 °C). However,
severe overbaking (e.g., 60 min at 210 °C) may result in coloristic
changes towards a duller, darker shade and in the formation
of various surface structures (e.g., craters), depending on the
resin/curing agent system used. Changes in film hardness have
also been observed. Where especially good heat stability is
required, we recommend suitable preliminary tests under the
appropriate conditions.
Sicopal ® Yellow grades are supplied exclusively as low-dusting
fine granules. They are not subject to labeling requirements.
Recommended for powder coating application are:
Sicopal ® Yellow L 1100 P.Y. 184
Sicopal ® Yellow L 1120 P.Y. 184
Sicopal ® Yellow L 1600 P.Y. 184