It has been thought to be almost impossible to obtain waterresistance and solution stability at once, however, Kuraray EXCEVAL™ realized the compatibility of both performance, based on Kuraray’s accumulated PVOH technology.

  Conventional PVOH EXCEVAL™
Fully
hydrolyzed
Partially
hydrolyzed
Fully &
medium
hydrolyzed
Properties Water resistance
Solution stability
Gas barrier



Grade name Specification
Appearance Viscosity (1)
(mPa.s)
DH
(mol%)
Volatiles
(%max)
Ash (2)
(%max)
pH
RS-1117 White powder 23-30 97.5-98.5 5.0 0.7 5.0-7.0
RS-1717 White powder 23-30 92-94 5.0 0.7 5.0-7.0
RS-1113 White powder 15.5-21.0 97-98 5.0 0.7 5.0-7.0
RS-1713 White powder 15-21 92-94 5.0 0.7 5.0-7.0
RS-2117 White powder 25-30 97.5-99 5.0 0.7 5.0-7.0
HR-3010 White powder 12-16 99-99.4 5.0 0.7 5.0-7.0
(1) Viscosity is measured at 4% aqueous solution at 20(68) determined by Brookfield viscometer.
(2) Ash content is measured at dry basis as Na2O.
(3) Tentative specifioation.

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