申请人:——
公开号:US20040204543A1
公开(公告)日:2004-10-14
Water-soluble films are prepared from polymer blends of polyvinyl alcohol and sulfonate polymers. The sulfo group can be acid form, SO
3
H, as well as salt form of potassium, sodium, ammonium, i.e. —SO
3
K, —SO
3
Na, and —SO
3
NH
4
. Conventional film-forming processes can be used to produce the films. Polymeric films prepared from the blend compositions have unique characteristics. Their water solubility rate can be controlled by varying the composition ratio of the polymer blend. Their water solubility rate is increased even at a temperature of 0° C. The water-soluble polymeric films can be used as packaging materials and immersion transfer printing film.
水溶性薄膜由聚乙烯醇和磺酸聚合物的聚合物混合物制备而成。磺基可以是酸性的,如 SO
3
H 以及钾、钠、铵盐形式,即-SO
3
K、-SO
3
Na 和 -SO
3
NH
4
.传统的成膜工艺可用于生产薄膜。用混合物制备的聚合物薄膜具有独特的特性。它们的水溶解度可通过改变聚合物混合物的组成比例来控制。水溶性聚合物薄膜可用作包装材料和浸渍转移印刷薄膜。