Petrochemicals are the backbone of paints, varnishes, enamels and industrial coatings. They provide resins, pigments, driers and thinners for applicable, long-lasting and glossy finishes. The binder resin is the film-forming component made up of synthetic polymers like acrylic, epoxy or alkyds. Resins can be tailored to improve adhesion, weather-resistance and chemical inertness. Added solvents allow adjustable viscosity and drying rate. Supplemental paint additives derived from petrochemicals include biocides for preservation and UV stabilizers preventing fading. Through extensive formulation of petrochemical ingredients, optimal paint properties and performance are achieved from household walls to factory pipes.
Petrochemical materials found in paints/resins include:
- Polyethylene terephthalate (PET) – used for bottled beverages, jars for spreads, clamshell takeout boxes. Provides barrier against gas/moisture.
- Polypropylene (PP) – used for yogurt cups, margarine tubs, microwavable meals. Heat resistant allowing hot fill liquids.
- Polystyrene (PS) – clear rigid/foam packaging for meat trays, eggs, cups, plates and cutlery. Provides insulation.
- Polyvinyl chloride (PVC) – cling wraps, blister packages, bottles containing edible oils. Excellent oxygen/chemical barrier.
- Polyethylene (PE) – plastic bags, sachets, films. Chemically inert offering low contamination risk.