Colorants for plastics can be grouped into two broad categories: pigments and
dyes. Pigments are organic or inorganic colored, white, or black materials. They
are nearly insoluble in plastic. Dyes are intended to dissolve or go into solution
in a given polymer. Physical forms for dyes and pigments can range from dry
prills or powder to liquids. These forms can be used as is or can be preincorporated
into compatible dispersions.
A concentrate supplier usually adds additional
value-added steps such as additive packages and color matching.
The main considerations when selecting colorants usually include dispersion,
migration resistance, heat stability, light stability, and cost. All are dynamic and
change with concentration of the colorant, processing conditions, part thickness,
and additives.
photos curusy:
http://catalogs.indiamart.com/products/masterbatches.html
http://plastoneme.com/aboutus.html
subject source: Encyclopedia of Polymer Science and Technology.
dyes. Pigments are organic or inorganic colored, white, or black materials. They
are nearly insoluble in plastic. Dyes are intended to dissolve or go into solution
in a given polymer. Physical forms for dyes and pigments can range from dry
prills or powder to liquids. These forms can be used as is or can be preincorporated
into compatible dispersions.
A concentrate supplier usually adds additional
value-added steps such as additive packages and color matching.
The main considerations when selecting colorants usually include dispersion,
migration resistance, heat stability, light stability, and cost. All are dynamic and
change with concentration of the colorant, processing conditions, part thickness,
and additives.
photos curusy:
http://catalogs.indiamart.com/products/masterbatches.html
http://plastoneme.com/aboutus.html
subject source: Encyclopedia of Polymer Science and Technology.
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