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UV Absorbers (UVA) and Light Stabilisers (HALS)

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Product Overview

Chitec offer the UK market a comprehensive portfolio of UV absorbers (UVA) and hindered amine light stabilisers (HALS) for the coatings and polymer markets, through Lawrence Industries.

UV absorbers absorb ultraviolet rays efficiently and dissipate them into heat. This helps to prevent visual and mechanical degradation as a result of photo-oxidation, thereby extending the lifetime of the product and ensuring a high performance over a longer period of time. Chitec offer chemistries based upon benzotriazolesbenzophenonestriazines and more besides. Products are available for a wide range of formulation types and applications, so get in touch today to discuss your requirements.

Light stabilisers are also manufactured by Chitec and offer free radical scavenging - mopping up free radicals generated by the exposure to sunlight. This helps to prevent further deterioration of the product. These are typically called hindered amine light stabilisers, or HALS. They can be divided into three categories: monomeric, polymeric and acid-resistant (AR-HALS) types. A combination of HALS and UVA delivers a synergistic improvement in UV protection.

Brochures & Technical Literature

Chitec Plastic Additives Brochure

An overview brochure of the UVA and HALS products Chitec offers for the plastic industry.

download Download PDF 4 MB
Chitec Coating Additives Brochure

An overview brochure looking at the range of UVA and HALS grades that Chitec offer for coating formulators.

download Download PDF 4 MB
Chiguard® WB Series

Chitec offers a range of emulsified UVA and HALS products for easy incorporation into waterborne coatings - also resulting in stable colloidal behaviour.

download Download PDF 1 MB

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Product Features
  • UV Absorbers based on benzotriazole, benzophenone, triazine and other chemistries.
  • Monomeric, polymeric and acid-resistant HALS.
  • Grades to suit a wide range of formulations and requirements.
  • Low dosage required.
Product Benefits
  • Long lasting UV protection. Highly efficient.
  • High thermal stability and weather resistance.
  • Good storage stability.
Typical Applications
  • Polymers - polyolefins, polyurethanes, PVC, nylon, PBT, PET, acrylic, polyester, melamine...
  • Protective and decorative coatings.
  • Powder coatings.
Related Technical Articles

Featured grades with technical datasheets

A brief overview of the key grades with their Technical Datasheets (TDS) is given below.

If you are looking for a Safety Datasheet (SDS), Product Safety Information (PSI) or an alternate grade, then please get in touch or request a sample.

Key points at a glance:

  • Hindered amine light stabiliser (HALS)
  • Hindered phenol type of anti-oxidant, providing the light stabiliser with extended life
  • Effective at reducing coating defects like cracking and loss of gloss
download Chiguard® 100 Technical Datasheet 57 KB

Key points at a glance:

  • Well-established HALS
  • Provides outstanding light stability in various coating systems
  • Offers long-term heat stability to coatings through a radical trapping mechanism
download Chiguard® 353 Technical Datasheet 57 KB

Key points at a glance:

  • Substituted benzotriazole UVA
  • High solubility in most organic solvents and dispersible in aqueous systems
  • Liquid - easy to dose
download Chiguard® 5530 Technical Datasheet 618 KB

Key points at a glance:

  • Primary diol structure that allows polyol properties
  • Reactive to isocyanates
  • Prevents migration and blooming issues of UV absorbers
  • Suitable for aliphatic and aromatic PU systems