The SI Group offers a range of products for various coating and paint applications including phenolic resins, antioxidants, intermediates, and solvents. As one of the world’s largest antioxidant and stabilizer technology providers, SI Group’s portfolio of phenolic resins provides excellent corrosion and chemical resistance in many industrial and electrical coating applications.
Phenolic resins are used in many high-performance coating applications, where industries need outstanding corrosion protection against most acids, solvents, and salts. Resins, pigments, solvents, additives, and intermediates make up the SI Group portfolio for coating formulations. Phenolic resins alone in surface coating formulations may face common occurrences like rigidity, low color stability, and requiring thermal curing. Combining phenolic resins with additional resins like epoxy, polyester, or alkyds, allows for greater adhesion in surface coatings as well as chemical resistance.
Coating technology is a very complex process that involves resins, pigments, solvents, and additives. Cross-linking phenolic resin with alkyds and epoxy resin allows for outstanding metal surface coatings with high adhesion and chemical resistance. This compatibility with various blends offers formulators the chance to strengthen the inherent brittle phenolic resin films for a wider commercial applications.
Industry
Resin Type
Applications
Compatible Systems
Metal Packaging
Resols
Etherified Resoles
Metal coatings that are applied in the interior of the can for various foods, beverages, aerosols, tubes, industrial containers and drums.
Epoxy, polyester
PVB
Industrial Coatings
Resoles
Novolacs
Epoxy Novolacs
Industrial coatings for tank linings, pumps, machinery, marine, pipes, wash primers, hoods, and residential coil coating (HVAC coatings).
Epoxy, alkyd, polyester
Electrical Insulating Coatings
Resols
Etherified Resoles
Electrical coatings that protect the primary and secondary insulation of electrical components.
Alkyd
Printing Inks
Resols
Novolacs
Printing ink modifier that provides pigment dispersion, flowability, viscosity
and adhesion of the ink onto difficult substrates.
Rosin and other rosin
modifiers
Powder Coatings
Novolacs
Modifier and curing agent for this specific coating application which can be applied electrostatically and cured under heat of UV.
Epoxy
The SI Group's phenolic resin portfolio offers a variety of solid and liquid, reactive and non-reactive phenolic resins that provides the following property benefits:
Adhesion on difficult substrates
Compatibility with other resin systems
Flame retardancy
Dielectric capabilities
Chemical resistance
Thermal stability
Mechanical strength
Industrial anti-corrosion benefits
Phenolic resins are often used in combination with other materials as they require heat-curing and are often very rigid. But those blending capabilities offer outstanding benefits for coating formulators, and the following resols and novolacs are a great foundation for industrial coating applications.
Phenolic resin coatings performance can further be improved by incorporating the SI Group portfolio of stabilizer additives. These thermally stable, non-volatile additives enhance the stability of the formulation during processing and curing while improving the longevity and service life of the phenolic resin coating.
SI Group Antioxidants
Antioxidants, when introduced to phenolic resin coatings, protect against oxidative degradation of polymers from heat exposure. These additives provide increased durability and performance for the phenolic resin coatings.
Primary Antioxidants
Hindered phenolic radical scavengers that stabilize the phenolic resin coating over its service life.
Secondary Antioxidants
Phosphite peroxide decomposers that stabilize the phenolic resin coating during processing and application.
Antioxidant Blends
Offer synergistic effect of both primary and secondary antioxidants with less raw material (RM) to handle, non-dusting forms, and lower variability.
Photochemical reactions caused by absorbed UV light will degrade the phenolic resin coating over its lifetime. The SI Group offers high-performance, regenerative UV light stabilizers that prevent photo-oxidation.
Ultra Violet Light Absorbers (UVAs)
Absorb the light at a certain wavelength and dissipate into heat.
Hindered Amine Light Stabilizers (HALS)
Scavenge radicals formed by interaction of light with the polymers.
Can be used alone or in combination with oligomeric HALs
Superior stabilizer for coating applications facing low light stability
Summary
Interior metal substrates and various industrial coating applications require a strong foundation that protects the product from chemical stains and provides improved adhesion to difficult substrates. The SI Group portfolio of phenolic resins and additives offers many solutions depending on your application and curing technology. Contact us today if you have questions about which grade or additive works best for your coating application.
