| 摘要 |
PURPOSE:To produce a modified vinyl acetate resin which is water-soluble even in the absence of any alkali metal and suitable for use in pastes, adhesives, or aqueous solutions used in paper processing or the like, by copolymerizing an oxyalkylene group-containing unsaturated monomer with vinyl acetate. CONSTITUTION:The desired modified vinyl acetate resin is prepared by copolymerizing vinyl acetate with an oxyalkylene group-containing unsaturated monomer of the formula (wherein R<1> and R<2> are each H or alkyl, X is H or an organic residue such as alkyl, alkyl ester, alkylamide, or sulfonate, and n is 1-100). X in the above formula is usually H. The number of oxyalkylene groups, i.e. n, of advantageously 1-50 and preferably about 3-50 is practical. |
