发明名称 |
PARTICULATE COMPOSITIONS USEFUL AS PLANT GROWING MEDIA ADDITIVES |
摘要 |
Superabsorbent gel compositions useful as plant growing media additives are prepared from a copolymer of acrylamide and acrylic acid salt in a molar ratio of 70:30 to 95:5, cross-linked such that less than 30% by weight of the dry polymer is water-soluble and the gel can absorb releasably at least 15 times its own weight of water. The gel composition is therefore tailored to the needs of an agricultural/horticultural context because it has long-term stability in natural soil, low solubility that would otherwise lead to poor soil properties, and good water absorbency. Preferred gel compositions in foam form are described. |
申请公布号 |
EP0072213(B1) |
申请公布日期 |
1985.02.20 |
申请号 |
EP19820304144 |
申请日期 |
1982.08.05 |
申请人 |
UNILEVER NV |
发明人 |
BOSLEY, JOHN ANTHONY;DEHNEL, ROGER BRIAN;SYMIEN, SERGE ALFRED |
分类号 |
A01G1/00;A01G31/00;C05G3/00;C08L33/00;C08L33/24;C08L33/26;C09K17/00;C09K17/02;C09K17/16;C09K17/20;C09K17/22;C09K101/00 |
主分类号 |
A01G1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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