CHLUMIUV® UV-3638 CAS 18600-59-4

Category:

UV-3638 Application scenarios

1. PET-related products:

As an FDA-approved food contact material additive, it is used in high-end PET food packaging (such as olive oil bottles, ketchup bottles), PET films (food wrap, solar cell backsheets, car window films), and PET fibers to prevent spoilage of contents due to UV irradiation and delay material aging.

2. Optical materials:

Suitable for optical materials such as PET and PC, it is used in optical lenses and light diffusion plates for backlit liquid crystal displays, efficiently absorbing UVB and UVC ultraviolet rays while maintaining high light transmittance and colorless properties.

3. Other transparent polymer materials:

Suitable for PC co-extruded polycarbonate sheets, PBT products, nylon, etc., especially suitable for production scenarios at high processing temperatures, extending the service life of products by inhibiting photochemical reactions.

4. Defense and special industries:

Used in polymer components related to the defense industry that require strict UV absorption and thermal stability, ensuring the durability of equipment in complex environments.

5. Personal care products:

As a broad-spectrum UV filter ingredient, it is used in sunscreens, baby sunscreens, etc., providing UV protection while also blocking short-wave blue light.

Description

UV-3638 CAS 18600-59-4

Appearance White-like powder
Molecular weight 368.3
Content ≥99.0%
Melting point 310-315
Boiling point 522.8°C
Density@20°C 1.41g/cm3
Ash ≤0.1%
Volatiles ≤0.3%
Light transmission 460 nm≥96%
500 nm≥99%

UV-3638 Usage

1. UV-3638 is an efficient UV absorber: it has a very wide UV absorption, high temperature processing resistance; high pressure resistance; acid and alkali resistance; no decomposition; no precipitation; no migration; no odour change. Very low volatility, strong absorption efficiency, several times that of ordinary UV absorption, no effect on the colour of the substrate, good compatibility with the resin, not involved in the polymerisation process reaction. Especially for pet and pc has excellent stability. Mainly used in pet fibres; pet films; pet bottle slices, to protect the contents of pet bottles from UV damage. pc co-extruded sunlight panels.

2. UV absorber UV-3638 is a benzoxazinone UV absorber capable of absorbing 200-400 nm of UV light. The absorption range covers UVA, UVB and UVC with a peak absorption of 350 nm. The absorption efficiency is several times that of commonly used UV absorbers, with a heat loss temperature of up to 371 degrees Celsius. It has high temperature resistance, extraction resistance, low volatility, low migration, wide absorption range and high absorption efficiency, as well as delaying colour yellowing and blocking physical loss. It is suitable for PET, PBT, PAR, PES, PSU, PPO, PPS, PC, PA under high temperature processing, especially for transparent PET film, sheet and plate, transparent PC film, sheet and plate, optical film, optical lens, light diffusion plate. The general dosage is 0.1-0.5%.

 

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