Absorbent products, irrigation, erosion control, and root growth control
US8584400B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jun 22, 2004 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Oct 29, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/29
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention provides processes for coating the surface of substrates such as a sheet, film, foam, fiber, etc., with a curable liquid resin or solution of curable resin, then in one embodiment, stably attaching a superabsorbent polymeric powder to such resin, and then curing the resin to form a coated superabsorbent product. Such substrates may include polymeric materials. Other process embodiments utilizing curable and thermoplastic resinous powders may be used instead of curable liquid resins and resulting products are included in the invention. Other embodiments involve affixing a container at least partially filled with superabsorbent polymeric powder to a substrate, placing the container proximate to the element, or affixing the container to a separate member. The products may be utilized for water and nutrient retention in combination with irrigation, erosion control, to direct plant root growth, and to clean up standing water and petroleum spills.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.