Water-retaining support for plants and plant body-growing water-retaining material
US6615539B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 13, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Aug 13, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G24/48
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A water-retaining support for plants comprising a hydrogel-forming polymer (A) having a calcium ion absorption of 0-100 mg per 1 g of the dry weight thereof, having a chlorine ion content of 0.07-7 mmol per 1 g of the dry weight thereof and having a water absorption magnification in ion-exchanger water at 25° C. of 1.0×101 to 1.0×102; or a plant body-growing water-retaining material comprising a molded product of a mixture of such a polymer (A) and a plant body-growing support (B). The water-retaining support for plants and the plant body-growing water-retaining material are those which have an excellent water-retaining property and they substantially do not cause inhibition of root generation or inhibition of root elongation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.