Polyvinyl alcohol powder
    273.
    发明公开
    Polyvinyl alcohol powder 无效
    Polyvinylalkoholpulver

    公开(公告)号:EP0810254A1

    公开(公告)日:1997-12-03

    申请号:EP97108776.2

    申请日:1997-06-02

    Abstract: The present invention provides a polyvinyl alcohol powder having an average pore diameter of 0.1 to 10 µm and a pore volume in the range of 0.05 to 0.4 cm 3 /g
    Since the PVA powder of the present invention has an excellent solubility in water, an aqueous solution thereof can easily be prepared industrially.
    Since the PVA powder of the present invention has a low content of an organic volatile component and a low content of a nonvolatile component such as a carboxylic acid salt or the like which is derived from a basic catalyst, it has an excellent industrial handleability.

    Abstract translation: 本发明提供平均孔径为0.1〜10μm,孔体积为0.05〜0.4cm 3 / g的聚乙烯醇粉末。由于本发明的PVA粉末在水中的溶解性优异 ,其水溶液可以容易地在工业上制备。 由于本发明的PVA粉末具有低含量的有机挥发性成分,并且由碱性催化剂衍生的羧酸盐等不挥发成分的含量低,所以具有优异的工业操作性。

    수소첨가 블록 공중합체의 다공성 건조 크럼
    279.
    发明公开
    수소첨가 블록 공중합체의 다공성 건조 크럼 失效
    氢化嵌段共聚物的多孔干燥剂

    公开(公告)号:KR1020010014270A

    公开(公告)日:2001-02-26

    申请号:KR1019997012388

    申请日:1999-04-28

    Abstract: 본발명은, (a) 주로방향족비닐단량체단위로이루어진하나이상의중합체블록및 (b) 주로공액디엔단량체단위로이루어진하나이상의중합체블록을포함하는블록공중합체를수소첨가하여수득되며, 분자량이 70,000 이상인수소첨가블록공중합체의다공성건조크럼으로서, 함수율이 1 중량% 이하이며, 유흡수성이 1.0 이상인다공성건조크럼 (유흡수성은, 25℃및 대기압하에서상기다공성건조크럼을오일에 1 분간침지했을때에크럼이흡수하는상기오일의중량의크럼의중량에대한비로서표시된다), 및그 제조방법에관한것이다. 건조크럼을, 연화제나실리콘오일등의액상첨가제수지조성물의성형시에개질재로서사용하면우수한외관을갖는성형품을제조할수 있다.

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