发明名称 |
PLASTICIZER CONTAINING POLYVINYL ALCOHOL GRANULES |
摘要 |
<p>of the disclosure: For the thermoplastic processing of polyvinyl alcocol, the processing temperature must be below the decomposition temperature of the polyvinyl alcohol; this is attained by incorporating plasticizers. For preparing a plasticizer-containing granular polyvinyl alcohol wherein the plasticizer is homogeneously distributed, there is used as starting material a granular polyvinyl alcohol consisting substantially of particles having a definite diameter. The plasticizer is incorporated in the presence of a small amount of water insufficient to dissolve the polyvinyl alcohol, and the temperature is adjusted in a definite manner during the mixing operation. Simultaneous presence of fine particles of a high molecular weight organic compound soluble or dispersible in water is advantageous. The plasticizer-containing granular polyvinyl alcohol is suitable for the manufacture of any shaped articles, especially films and sheets.</p> |
申请公布号 |
CA1125446(A) |
申请公布日期 |
1982.06.08 |
申请号 |
CA19790323977 |
申请日期 |
1979.03.22 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
ZIMMERMANN, WOLFGANG;HARREUS, ALBRECHT |
分类号 |
C08L29/00;C08J3/12;C08J3/16;C08J3/18;C08K5/00;C08K5/05;C08L29/02;C08L29/04;(IPC1-7):08L29/04 |
主分类号 |
C08L29/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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