Pigment
orange, pigment blue, pigment green; you name it and you've got a beautiful
piece of plastic ware thereupon colour tint in some store or the opposite .
However, in today's times the scope of pigments and dyes in plastics aren't
limited merely to lending hues and shades. They also make an impression on
sustainability, processability and compliance.
The
question often arises on which among the two; dyes or pigments are best fitted
to use within the industry . Dyes are wont to shade or tint a resin and
intrinsically they need to be transparent, strong and exhibit good heat
stability. However, dyes are compatible with only a couple of resins and thus
their use in quite limited during this industry. Pigments on the opposite hand
provide more options to the manufacturer thanks to their wider chrome range,
pacifying ability and better heat stability for an outsized number of resins.
The
base polymer actually decides the type of colorant which will be best suited
for the appliance . Pigments work best with polyolefins while dyes give good
results with polystyrene, poly carbonate and acrylic. All said and done, the
essential determining factor for choice of colorant is its compatibility with
the bottom resin. There are a couple of other factors that need to be kept in
mind also like the tactic of dispersion, processing temperature, heat
stability, gloss, weather fastness, application etc. a small error in making
the selection can drastically change the features of the plastic and thus , an
honest selection of the colorant assumes great importance.
Today,
there's more emphasis placed on using pigments that are less toxic and cause
minimum harm to the environment. many dollars are spent on research by several
organisations in developing such pigments. Their efforts haven't gone vainly
and one among them has been successful in replacing lead based materials in
pigments. chromate pigments were banned from use in consumer plastics and in
its place, organic yellow pigments are developed which have better tint strengths
in PVC and polyethylene. Another new development is with reference to pigment
blue. The name of the new pigment is YInMn blue which stands for its chemical
content namely yttrium, manganese, indium and oxygen. This pigment is
additionally superior to the normal cobalt blue pigments and has high
reflectivity and high ultraviolet absorbance within the near-infrared area.
Colorants
contribute to variety of performance aspects in plastics; however, lending
colour will always remain their major contribution. When one sees the
attractive world of colourful plastic ware one realises the important
contribution made by colorants to the present industry. At an equivalent time,
every individual connected with using and developing colorants for this
industry has got to attempt to make a difference to the colouring technology
whereby Mother Earth isn't harmed in any way whatsoever!
Our
achievements of today are due to the trust from our clients and customers
across the world . we'll live upto the customers' highest expections, striving
to supply the simplest brand within the world, contributing to our nation's
industrial & economical growth and also to make a far better tomorrow.
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