2,2’-Dihydroxy-4,4’-dimethyoxy benzophenone (BP-6)

Applications

2,2'-Dihydroxy-4,4'-dimethoxybenzophenone, commonly known as BP-6, is a highly effective UV absorber and photostabilizer known for its broad-spectrum UV protection capabilities, particularly in the UVA and UVB ranges.2 It is widely utilized in various industries to prevent the degradation of materials caused by exposure to ultraviolet light.

Key applications include:

1. UV Stabilizer for Plastics and Polymers

This is a primary and widespread application. BP-6 is incorporated into a wide range of plastic and polymer materials to protect them from UV-induced degradation, discoloration, cracking, and loss of mechanical properties. It's particularly effective in:

Polyolefins (e.g., polyethylene, polypropylene): Used in agricultural films, automotive parts, outdoor furniture, and other durable goods exposed to sunlight.

PVC (Polyvinyl Chloride): Used in window profiles, siding, pipes, and electrical cables to prevent yellowing and embrittlement.

Polyurethanes, Polyesters, and Polycarbonates: Enhances their weatherability and extends their service life.

Adhesives and Sealants: Improves the durability of outdoor adhesive and sealant formulations.

Fibers and Films: Used in synthetic fibers and packaging films to maintain their integrity and appearance.

2. Coatings and Paints

BP-6 is used in various coatings, lacquers, varnishes, and paints to protect both the coating itself and the underlying substrate from UV damage.6 It helps prevent chalking, fading, and loss of gloss, especially in automotive topcoats and industrial finishes.

3. Photoinitiator

In some specific UV-curable systems, BP-6 can also function as a photoinitiator, though this is less common than its primary role as a UV absorber. It generates free radicals upon UV light exposure to initiate the polymerization process

4. Lubricants

In certain industrial lubricants, BP-6 can be used to prevent UV-induced oxidative degradation, thereby extending the lubricant's lifespan.

5. Research & Development

It serves as an important chemical intermediate and a standard for UV absorption studies in polymer science and material science research.

6. Research & Development

Used as a standard in UV spectroscopy and in research related to photostability and polymer science.

BP-6 is valued for its excellent photostability and its ability to effectively dissipate absorbed UV energy as thermal energy, making it a robust choice for long-term UV protection in demanding applications.

2,2’-Dihydroxy-4,4’-dimethyoxy benzophenone (BP-6)