Dispersions, Resins and Additives

TINUVIN^® light stabilizers and UV absorbers

TINUVIN performance additives for UV protection and durability are designed to protect and extend the lifetime of coatings. Our portfolio contains two types of light stabilizers: Ultraviolet Light Absorbers (UVA) and Hindered-Amine Light Stabilizers (HALS).

Based on the nature of the light absorbing unit, several types of UVA are commercially available and are sufficient in preventing both the colorant fading of coatings and inks as well as the yellowing of resins; by filtering out harmful UV radiation they provide protection against the degradation of both coatings and substrates. Benzotriazoles offer the broadest spectral coverage. HALS trap free radicals maintain surface properties such as gloss and prevent cracking and chalking of paints.

The TINUVIN 5000 series and other TINUVIN blends offer synergistic combinations of UVA and HALS technology against surface defects while also bolstering color and gloss retention in coating applications. These easy-to-handle additives are compatible and soluble in most solvent-based systems, and meet all performance demands of automotive, industrial, and architectural applications. The series also contains subgroups with specific properties for suitability with wood, plastic and metal substrates or exceptionally high pH or high thermal conditions.

The light stabilizers blends combine two main technologies: filters that block ultraviolet radiation and scavengers that “hut down” and eliminate free radicals within the coating to master a complex array of challenges.

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Key features and benefits

Solutions for aqueous and solvent-based formulations
Qualification for low-VOC or VOC-free labeling
Sustainable products
Easy stir-in processing

UV Absorbers

Long-term durability
Lower DFT (Dry film thickness)
Extended lifetime of UV-sensitive substrates
Enhanced color retention
Improved durability of coatings and adhesives

Blends

Long service / renovation intervals
Innovation dedicated to product development and advancement of environmental, health and safety standards

Applications

Benzotriazole (BTZ) - UV absorbers

_{Long photo-permanence; Long wavelength absorbance}

TINUVIN 99-2UVA for medium performance solvent-based coatings.
TINUVIN 384-2Multi-purpose UVA for medium to high durability requirements; minimum color impact in refinish clear coat applications.
TINUVIN 900UVA for medium to high durability requirements in powder and coil coating applications; limited solubility in organic solvents.
TINUVIN 928UV absorber of the hydroxyphenyl benzotriazole class developed specially for high performance coating applications.
TINUVIN 1130UVA for medium performance solvent-based and water-based coatings (may require addition of cosolvent).
TINUVIN Carboprotect®Very red shifted UVA for protection of aromatic epoxy systems; especially recommended for carbon or glass fiber reinforced composites; allows <1% transmittance up to 420nm.

Triazine (HPT) - UV absorbers

^{Long photo-permanence; High extinction coefficient}

TINUVIN 400Blue shifted UVA for high durability requirements in clear coat applications including UV curing systems; excellent spectral coverage in combination with TINUVIN 479.
TINUVIN 405Blue shifted UVA for high durability requirements in powder clear coats; excellent spectral coverage in combination with TINUVIN 479.
TINUVIN 477Red shifted UVA with high extinction coefficient; for high durability wood coating requirements; allows <1% transmittance up to 370nm.
TINUVIN 479UVA with extremely high extinction coefficient; for highest durability requirements in clear coats, powder coatings or UV curing systems; specifically suited for thin film applications.
TINUVIN 400-DW ECOBlue shifted UVA for water-based high performance applications; excellent spectral coverage in combination with TINUVIN 479-DW or with Tinuvin 479-DW ECO.
TINUVIN 477-DW ECORed shifted UVA for high performance wood coatings.
TINUVIN 479-DW ECOUVA with extremely high extinction coefficient, for highest durability requirements in clear coats, specifically suited for thin film applications.

Benzophenone (BP) – UV absorbers

CHIMASSORB 81Solid UV absorber of the 2-hydroxy-benzophenone class.

Hindered amine light stabilizers (HALS)

_{Free radical scavengers}

TINUVIN 123Non-basic HALS for acid catalyzed and oxidative curing coatings; improves yellowing resistance in direct-fired gas ovens.
TINUVIN 292Multi-purpose basic HALS for various applications, use in water-borne coatings may require addition of cosolvents, may interact with sensitive dispersion binders.
TINUVIN 123-DW ECONon-basic HALS for waterborne formulations, no interaction with sensitive dispersions.
TINUVIN 249-DW ECONon-basic HALS for water-based formulations; no interaction with sensitive dispersions; does not interact with acidic paint ingredients such as catalysts, biocides and pigments.

Blends

_{UVA/HALS blends for water-based systems}

TINUVIN 5333-DW ECOAqueous dispersion of a blend of UV absorbers (UVA) and a hindered amine light stabilizer (HALS) with broad spectral coverage for high performance application like coatings, adhesives, sealants, and printing inks.
TINUVIN 5151UVA / HALS blend for solvent-based coatings; use in water-based coatings may require addition of cosolvent.

_{UVA/HALS blends for solvent-free systems}

TINUVIN 5050UVA / HALS blend for solvent-based applications.
TINUVIN 5060UVA / non-basic HALS blend for solvent-based oxidative curing coatings
TINUVIN 5151UVA / HALS blend for solvent-based coatings; use in water-based coatings may require addition of cosolvent.
TINUVIN 5248UVA / HALS blend for high performance solvent-based applications.

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TINUVIN® light stabilizers and UV absorbers