Plastic colorant

Plastic colorants are chemical compounds used to color plastic. Those compounds come in a form of dyes and pigments. The type of a colorant is chosen based on the type of a polymeric resin, that needs to be colored. [citation needed] Dyes are usually used with polycarbonates, polystyrene and acrylic polymers. Pigments are better suited for use with polyolefins.[1] [2]

The colorant must satisfy various constraints, for example, the compound must be[3] chemically compatible with the base resin, be a suitable match with a color standard (see e.g. International Color Consortium), be chemically stable, which in this case means being able to survive the stresses and processing temperature (heat stability) in the fabrication process and be durable enough to match the life duration of the product.

The parameters of the compound vary with a desired effect, which may include the final product being pearlescent, metallic, fluorescent, phosphorescent, thermochromic or photochromic.[4]

The exact chemical formula will furthermore depend on the type of application: general purpose, food contact item, toy, package subject to CONEG,[5] etc.[4]

Different methods for delivering colorants in molding plastics include masterbatches (concentrates), a method which involves a concentrate being separated into resin, cube blends ("salt & pepper mixes" - dry blending) which are natural polymers, already sprayed into natural polymers, surface coating, and precolored resins, which involve using precolored materials to make manufacturing cheaper.[6][7]

## Examples

Colorant | Chemical class | Type

|
|

Diarylide pigment | azo dye | pigment
Sudan stain | azo dye | dye
Oil Blue A | anthraquinone | dye
Disperse Red 11 | anthraquinone | dye

## See also

* Liquid color
* Vinyl dye
* Fuel dyes

## References

1. ↑ Nishikants (2013-06-28). "Plastic colorant and its role in plastic industry". https://www.slideshare.net/Royceintly/plastic-colorant-and-its-role-in-plastic-industry.
2. ↑ "Plastic Colorants Guide for Injection Molded Parts". 2016-01-26. https://revpart.com/using-plastic-colorants/.
3. ↑ "Working with Color Concentrates". 2012-01-28. http://www.ptonline.com/columns/working-with-color-concentrates.
4. ↑ 4.0 4.1 "Colorants for Plastic Industry,Dyes for Plastics Industry,Pigments for Plastics Industry". http://dyes-pigments.standardcon.com/colorants-plastic-industry.html.
5. ↑ "Toxics in Packaging Clearinghouse". Collation of Northeastern Governors (CONEG). http://www.coneg.org/tpch.
6. ↑ "Methods of Coloring Plastics". October 2013. https://www.rtpcompany.com/products/color/modes/.
7. ↑ "Effect of coloring methods on properties of plastics". https://www.polyplastics.com/en/product/safety/coloring/.

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Plastics

Chemical types|

* Acrylonitrile butadiene styrene (ABS)
* Cross-linked polyethylene (PEX, XLPE)
* Ethylene vinyl acetate (EVA)
* Poly(methyl methacrylate) (PMMA)
* Poly(ethyl methacrylate) (PEMA)
* Polyacrylic acid (PAA)
* Polyamide (PA)
* Polybutylene (PB)
* Polybutylene terephthalate (PBT)
* Polycarbonate (PC)
* Polyetheretherketone (PEEK)
* Polyester (PEs)
* Polyethylene (PE)
* Polyethylene terephthalate (PET, PETE)
* Polyimide (PI)
* Polylactic acid (PLA)
* Polyoxymethylene (POM)
* Polyphenyl ether (PPE)
* Polypropylene (PP)
* Polystyrene (PS)
* Polysulfone (PES)
* Polytetrafluoroethylene (PTFE)
* Polyurethane (PU)
* Polyvinyl chloride (PVC)
* Polyvinylidene chloride (PVDC)
* Styrene maleic anhydride (SMA)
* Styrene-acrylonitrile (SAN)

Mechanical types|

* Thermoplastic
* Thermosetting polymer
* Duroplast
* Corrugated plastic
* Polymeric foam
* High performance plastics

Additives|

* Polymer additive
* Colorants
* Plasticizer
* Stabilizer for polymers
* Biodegradable additives
* Filler (materials)

Plastics processing|

* injection moulding
* plastics extrusion
* stretch-blow molding
* thermoforming
* compression molding
* calendering
* transfer molding
* laminating
* fiberglass molding
* pultrusion
* filament winding
* vacuum forming
* rotational molding

Products|

* Plastics industry
* Commodity plastics
* Engineering plastics
* High-performance plastics
* Plastic film
* Plastic bottle
* Plastic bag
* Plastic shopping bag
* Plastic cutlery
* Blister pack
* Foam food container
* Construction
* Geosynthetics
* Category:Plastics applications

Environment and health|

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Health issues of plastics and polyhalogenated compounds (PHCs)

Plasticizers: Phthalates|

* DIBP
* DBP
* BBP (BBzP)
* DIHP
* DEHP (DOP)
* DIDP
* DINP

Miscellaneous plasticizers|

* Organophosphates
* Adipates (DEHA
* DOA)

Monomers|

* Bisphenol A (BPA, in Polycarbonates)
* Vinyl chloride (in PVC)

Miscellaneous additives incl. PHCs|

* PBDEs
* PCBs
* Organotins
* PFCs
* Perfluorooctanoic acid

Health issues|

* Teratogen
* Carcinogen
* Endocrine disruptor
* Diabetes
* Obesity
* Obesogen
* Polymer fume fever

Pollution|

* Plastic pollution
* Rubber pollution
* Great Pacific garbage patch
* Persistent organic pollutant
* Dioxins
* List of environmental health hazards

Regulations|

* California Proposition 65
* European REACH regulation
* Japan Toxic Substances Law
* Toxic Substances Control Act

Waste|

* Plastic pollution
* Great Pacific garbage patch
* Persistent organic pollutant
* Dioxins
* List of environmental health hazards
* Plastic recycling
* Biodegradable plastic

Identification codes

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