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Covestro lens-grade polycarbonate provides the right specs for eyewear manufacturer
Time:2019-02-14

Polycarbonate is the ideal lens material for corrective eyeglasses and sunglasses due to its light weight, impact resistance, durability and comfort. However, not all polycarbonate for eyewear applications is created equal. Lens-quality grades of Makrolon? polycarbonate from Covestro offer excellent optical properties, high mechanical strength, comfort and toughness.



When original equipment manufacturer Jiangsu Sigo Optical Co., Ltd. (“Jiangsu Sigo Optical”) decided to upgrade thepolycarbonate material used for its corrective and sunglass lenses, it turned to Makrolon? polycarbonate resin for improved optical purity and production yield.


For corrective lenses, Jiangsu Sigo Optical utilized Makrolon? DP1-1821 polycarbonate, which is formulated specifically for the optical/ophthalmic market. Available in clear tints, the material offers a number of advantages for corrective lenses including:

  • High optical purity, transmission and scatter resistance
  • UV stabilized
  • High viscosity and easy release from the mold



Furthermore, this material:

  • Offers thin and fashionable design combined with impact resistance, and is appropriate for outdoor sports such as mountain biking and beach volleyball
  • Is appropriate for beach and snow environments where water and snow reflect harmful UV rays
  • Offers medium viscosity and easy release from the mold



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