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公开(公告)号:US5412084A
公开(公告)日:1995-05-02
申请号:US9083
申请日:1993-01-26
CPC分类号: C08B37/003 , A61K8/736 , A61Q19/00 , A61Q17/04
摘要: New derivatives of carboxymethyl chitosan are disclosed, which are designated as N,O-Carboxymethylchitosonium carboxylates. The derivatives are ammonium salts made by acidifying a substantially neutral suspension of solid N,O-carboxymethyl chitosan in a diluent with an aqueous solution of the carboxylic acid. The carboxylic acid substitutes on the primary amine sites of the N,O-carboxymethyl chitosan.
摘要翻译: 公开了羧甲基壳聚糖的新衍生物,其被称为N,O-羧甲基壳氨酸羧酸盐。 衍生物是通过用羧酸水溶液在稀释剂中酸化固体N,O-羧甲基壳聚糖的基本上中性的悬浮液而制得的铵盐。 羧酸代替N,O-羧甲基壳聚糖的伯胺位点。
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公开(公告)号:US5382286A
公开(公告)日:1995-01-17
申请号:US91297
申请日:1993-07-15
IPC分类号: C08L5/08 , G01S7/524 , G10K11/00 , G10K11/02 , C09D105/08
CPC分类号: C08L5/08 , G10K11/006 , G10K11/02 , G01S7/524
摘要: A method for reducing cavitation around underwater acoustic projectors is described. The projector is cleaned with a surfactant and then encapsulated with an aqueous gel containing a polysaccharide polymer such as a chitosan derivative, a hydrophilic stabilizer and a biocide.
摘要翻译: 描述了一种减少水下声学投影仪周围气蚀的方法。 投影仪用表面活性剂清洗,然后用含有多糖聚合物如壳聚糖衍生物,亲水性稳定剂和杀生物剂的含水凝胶包封。
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