发明授权
- 专利标题： Polyvinyl alcohol powder
- 专利标题（中）： 聚乙烯醇粉
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申请号： US866392申请日： 1997-05-30
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公开(公告)号： US5811488A公开(公告)日： 1998-09-22
- 发明人: Naoto Narumoto , Takanori Kitamura , Yuji Takenouchi , Takanori Tsugiya , Hisamichi Yanai
- 申请人： Naoto Narumoto , Takanori Kitamura , Yuji Takenouchi , Takanori Tsugiya , Hisamichi Yanai
- 申请人地址： JPX Kurashiki
- 专利权人： Kuraray Co., Ltd.
- 当前专利权人： Kuraray Co., Ltd.
- 当前专利权人地址： JPX Kurashiki
- 优先权： JPX8-138240 19960531
- 主分类号： C08F8/12
- IPC分类号： C08F8/12 ; C08J3/03 ; C08J3/12 ; C08J9/28 ; C08L29/02 ; C08L29/04 ; C08F116/06
摘要：
The present invention provides a polyvinyl alcohol powder which comprises a pore having an average diameter of 0.1 to 10 .mu.m in the range of 0.05 to 0.4 cc/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.
公开/授权文献
- US5679335A Cyclic alkylmethylsiloxanes for skin care 公开/授权日：1997-10-21
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