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MR™ Series
High Index Monomers for Premium Optical Lenses

Overview

Premium optical lenses with high refractive index, high Abbe number, low specific gravity, and high impact resistance are made by polymerizing MR™ Series monomers. MR™ Series is especially suitable for ophthalmic lenses and known as the first thiourethane based high index lens material. MR™ Series offers various products to provide the best solution for optical lens wearers.

MR™ Series

MR™ Series Features

MR™ Series clear resins obtained by heat-polymerization have the following features:

HIGH REFRACTIVE INDEX

  • Suitable for thinner & lighter lenses

SUPERB OPTICAL QUALITY

  • Both high refractive index and high Abbe number give optical performance similar to glass lenses
  • Glass mold-casted MR™ Series shows minimal stress-strain

MECHANICAL STRENGTH

  • Good impact and static load resistance contribute to ophthalmic lens wearer eye safety

DURABILITY & WEATHERABILITY

  • Good weatherability for minimal change in lens color after years of use
  • Good compatibility with various coating materials

PREMIUM OPHTHALMIC & SUNGLASS APPLICATIONS

  • Good mechanical strength for fashionable rim-less frames
  • Good color tintability for high fashion sunglasses which have special color needs
  • Suitable for various lens applications including photochromic & polarized lenses

Comparison of MR™ Series and low-Index lens thickness

Comparison of MR™ Series and low-Index lens thickness

Product Line-up

  MR™ Series
MR-8™ MR-7™ MR-10™ MR-174™
MR-8 MR-7 MR-10 MR-174
Refractive Index(ne) 1.60 1.67 1.67 1.74
Abbe Number(ve) 41 31 31 32
Heat Distortion Temp. (℃) 118 85 100 78
Tintability Good Excellent Good OK
Impact Resistance Good Good Good OK
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Physical properties of clear resins obtained by heat-polymerization of MR™ Series.
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All properties are representative measurement figures obtained under specified test methods at Mitsui Chemicals, Inc. and are not guaranteed as specifications.