UV-234 / UV Absorber 234 CAS 70321-86-7

Chemical Name:2-(2H-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl)phenol

Cas No.:70321-86-7

Synonym:Eversorb 76;Milestab 234;THASORB UV-234;UV Absorber UV-234

Structure:

紫外吸收剂 234

Category:

UV-234 Application scenarios

1. Plastics and Polymers

Used as a light stabilizer to prevent yellowing, embrittlement, and loss of mechanical properties of materials during outdoor use or under light exposure.

2. Paints and Coatings

Used to protect paint films and coatings of automotive paints, building exterior paints, industrial protective coatings, coil coatings, and powder coatings, preventing gloss loss, chalking, cracking, and color changes caused by UV radiation, thus extending their service life.

3. Rubber and Elastomers

Prevents hardening and cracking of rubber products (such as sealing strips, tire sidewalls, and outdoor products) due to photoaging.

4. Synthetic Fibers and Textiles

Added during the fiber manufacturing process or used in functional textile coatings to improve the lightfastness of fabrics (especially outdoor clothing, awnings, etc.).

5. Other Industrial Additives

Used as an auxiliary additive to protect materials sensitive to ultraviolet light.

Description

UV-234 / UV Absorber 234 CAS 70321-86-7

Appearance Off-white powder
Content ≥99%(HPLC)
Melting point 139.5-144℃
Ash ≤0.1%
Volatile ≤0.5%
Transmittance 460nm≥95%   500nm≥97%

UV Absorber 234 Application

Suitable for polycarbonate, polyvinyl chloride, polyoxymethylene, polyamide, polyester, etc.

Polyvinyl chloride Polycarbonate Polyester
0.25-0.5% 0.3-0.5% 0.3-0.5%

lcsorb® UV-234 has the advantages of good compatibility, low volatility, strong UV absorption, and excellent thermal stability. Suitable for polycarbonate, polyester, polyoxymethylene, polydilute amine, polyphenylene ether, thermoplastic polyurethane and polyurethane fiber, etc.

UV Absorber 234 Storage

Being kept in dry, clean warehouse with well ventilation.
Avoid exposing to light and heating for prevention of oxidation.
Protecting the product from leakage, rain and insolation during transportation.

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