发明授权
- 专利标题： Soil sealing compositions and methods
- 专利标题（中）： 土壤密封组合物和方法
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申请号： US890751申请日： 1986-07-25
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公开(公告)号： US4669920A公开(公告)日： 1987-06-02
- 发明人: Brian Dymond
- 申请人： Brian Dymond
- 申请人地址： GB2
- 专利权人： Allied Colloids Ltd.
- 当前专利权人： Allied Colloids Ltd.
- 当前专利权人地址： GB2
- 优先权： GBX8610762 19860502
- 主分类号： C09K17/40
- IPC分类号： C09K17/40 ; C09K17/00 ; E02D3/12
摘要：
A soil sealing composition suitable for reducing the permeability of soil to water contaminated with electrolyte comprises an expanding lattice clay and a water soluble or water swellable polymer having a molecular weight of at least 500,000 and that is a copolymer of 2-acrylamido-2-methyl propane sulphonic acid, or certain other ethylenically unsaturated sulphonic acids, together with other ethylenically unsaturated monomer, preferably a blend of acrylamide and acrylic acid.
公开/授权文献
- US5972391A Swine feed containing vitamin E and spice 公开/授权日：1999-10-26
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