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Tech guide Asaflex
December 27, 2002

The index of refraction, shown here for Asaflex™ and other clear resins,
is a basic guide to the transparency of the blended resins.

Refractive index of Asaflex™ and other clear polymers
Maximum transparency can generally be obtained by selecting resins with mutually similar indexes of refraction.
Those of Asaflex™ and SC, as shown here, provide a particularly close match.
Transparency comparison

Polymer  Refractive index,
Asaflex™ 805 1.577
Asaflex™ 810 1.572
Asaflex™ 825 1.577
Asaflex™ 830 1.572
Asaflex™ 840 1.577
SC 1.573
GPPS 1.59-1.60
SAN 1.56-1.58
MS 1.56-1.58
Acrylic 1.49-1.50
PC 1.58-1.59
PVC (hard) 1.52-1.54
Abbreviations:
GPPS, general purpose polystyrene; SAN, styrene-acrylonitrile copolymer; MS, methylmethacrylate-styrene copolymer; PC, polycarbonate; PVC, polyvinylchloride


Test method:
JIS K 7142
SC:
PSJ- Polystyrene™ SC004 (PS Japan Corp.)
Other polymers:
Typical, widely used general grades
  • Please note that all data and values are given as typical results obtained with the indicated test methods, and not as any product specification or warranty of any nature.

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