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Octocrylene: What is it?

Octocrylene: What is it?

Sep. 23, 2023

Octocrylene is an organic sun filter. This filter mainly absorbs UVB radiation, which is responsible for tanning but also for sunburn and skin cancer.

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26 Mar.

Special dye auxiliary for light protection, visible light absorber

Core properties of 532 nm light absorbers and their application products: laser protective glasses and protective face masks A 532nm visible light absorber, in simple terms, is a material specifically designed to "capture" or "block" this 532nm green light - it acts like a "precise filter", only targeting green light at this wavelength, with minimal impact on other colors of light (such as blue light from a mobile phone screen, or daily red light), and thus not disrupting normal optical signals.

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10 Mar.

Organic synthetic photoinitiator: Benzophenone

Benzophenone is a typical type II (or Norrish II) photoinitiator, widely used in UV curing. It cannot directly cleave to generate free radicals and requires the cooperation of a "hydrogen donor" (usually an amine compound) under illumination to initiate polymerization through a hydrogen abstraction reaction. In recent years, to overcome some limitations of traditional benzophenones, such as short absorption wavelength, easy migration, and the need for external amines, research on their synthesis has mainly focused on chemical modifications of the parent structure. The table below summarizes the main modification directions and their corresponding synthesis strategies.

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04 Mar.

Water-based blue light absorber LOTSORB UV450-10M for cosmetics

There are many excellent organic materials on the market that exhibit UV-blue light protection effects, but their application in aqueous systems, especially in the cosmetics industry, is limited due to their difficulty in achieving uniform dispersion in water. LOTSORB UV450-10M has overcome this challenge by specially processing inorganic blue light powder, achieving the first uniform dissolution of blue light components in water at the nanoscale. This product provides long-lasting protection against UV rays and blue light, boasts excellent safety, and offers a moisturizing feel on the skin.

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13 Jan.

LOTSORB B014 High contrast powder blocks the dark red color, making it appear even redder

Dark red is the low-purity stray light reflected from red objects. High-contrast color powder absorbs/blocks the dark red light, removing the "dark interference" that dilutes the purity of red. The reflected light is now only high-purity bright red light. The human eye perceives a more saturated and brighter red, which is "more red in color".

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06 Jan.

Application of 490nm sleep-aid color powder in sleep-aid glasses

The visible light received by the human eye, which ranges from 460 to 500nm, serves as a regulator of human circadian rhythm response. Exposure to LED screens at night, particularly their blue light (460nm-500nm), significantly reduces the level of melatonin during the night and suppresses sleepiness. For instance, exposure to "Circadian Light" circadian rhythm blue light (490nm) at night can positively impact human health. Reports indicate that up to 4 hours of blue light exposure before sleep can affect the level of melatonin during the night and subjective sleep quality.

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01 Dec.

Deeply cultivating the field of functional additives and jointly building a new ecology for the eyewear industry

Anti blue light functional additive: Targeting the visual health needs of the digital age, this additive can accurately filter high-energy short wave blue light at 380-455nm, while maintaining a visible light transmittance of over 90%, in line with the technical requirements of the new national standard GB/T 381202023. Its efficient blue light blocking performance and uniform light transmission have received high attention from many lens manufacturers, and multiple companies have requested sample testing on site.

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