Producer
Acomon AG
Leading producer of allyl diglycol carbonate (CR-39 / ADC) and other cast optical monomers for ophthalmic lenses.
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CR-39 / ADC optical monomers
Mid-index & specialty optical resins
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Concentration2024
CR-39 — allyl diglycol carbonate — is the original plastic eyeglass-lens material, the standard-index monomer that a large share of everyday clear and sunglass lenses are cast from, and Acomon is its leading maker. The quietly important fact is the ownership: Acomon is now part of Mitsui Chemicals, which also dominates the high-index (MR-series) lens-monomer market via KOC's main rival position. So one Japanese company increasingly sits atop both the standard-index and high-index ends of the eyeglass-lens monomer supply. The eyewear market looks endlessly varied at the frame and retailer level, but two steps upstream — at the resin the lens itself is made of — it narrows toward a market a single chemical company commands.
Acomon AG (Mitsui Chemicals) ↗Did you know2024
CR-39's uses reach well past clear vision. The same monomer is the base for photochromic (auto-darkening) lenses and a large fraction of plastic sunglass lenses — and, in a genuinely surprising twist, cast CR-39 sheet is a long-established solid-state nuclear track detector used in radiation physics and dosimetry: charged particles leave microscopic damage trails in the polymer that can be etched and counted. So a single optical monomer made by Acomon underpins everyday eyewear, sun protection, and the detection of radiation in scientific and safety applications. The plastic in a pair of glasses and a particle detector in a physics lab can be, chemically, the same material.
Acomon AG (Mitsui Chemicals) ↗