Refractive index of Asaflex and other clear polymers

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

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