发明授权
- 专利标题: Process for the preparation of a hydrogel which is largely free from monomers
- 专利标题(中): 制备大部分不含单体的水凝胶的方法
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申请号: US77803申请日: 1987-07-27
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公开(公告)号: US4794166A公开(公告)日: 1988-12-27
- 发明人: Friedrich Engelhardt , Manfred Schrod , Manfred Ziegelmayer , Josef Hilbig , Reinhard Donges
- 申请人: Friedrich Engelhardt , Manfred Schrod , Manfred Ziegelmayer , Josef Hilbig , Reinhard Donges
- 申请人地址: DEX Frankfurt
- 专利权人: Cassella Aktiengesellschaft
- 当前专利权人: Cassella Aktiengesellschaft
- 当前专利权人地址: DEX Frankfurt
- 优先权: DEX3629611 19860830; DEX3635367 19861017
- 主分类号: C08F6/00
- IPC分类号: C08F6/00
摘要:
A polymer hydrogel substantially free from monomers and oligomers is prepared by contacting a previously prepared polymer hydrogel with a single-phase mixture of water and a solvent and then separating the mixture of water and solvent from the hydrogel.
公开/授权文献
- USD425265S Compound dog leash 公开/授权日:2000-05-16
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