3905 9990 96

3905999096

Polymer of vinyl formal, in one of the forms mentioned in note 6|(b) to Chapter 39, of a weight average molecular weight (M@w) of 25|000|or more but not more than 150|000|and containing by weight: -|9,5|% or more but not more than 13|% of acetyl groups evaluated as vinyl acetate and -|5|% or more but not more than 6,5|% of hydroxy groups evaluated as vinyl alcohol