| 摘要 |
<p>PURPOSE:To produce a styrene-allyl alcohol copolymer useful as a vehicle for paint and ink, in high yield, by copolymerizing styrene and allyl alcohol in the presence of hydrogen peroxide and a weak acid. CONSTITUTION:Styrene and ally alcohol are copolymerized in the presence of hydrogen peroxide (usually 30% aqueous solution of hydrogen peroxide is used in an amount of 0.1-10% of the sum of the styrene and allyl alcohol monomers in terms of 100% hydrogen peroxide) and a weak acid. The weak acid is e.g. boric acid, phosphoric acid, phthalic acid, etc., having a dissociation constant pKa of >=0 in aqueous solution at 25 deg.C and its amount is about 0.01-1% of the sum of the monomers.</p> |
