Hydrophilic polyolefin sintered body
US8318824B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jul 24, 2008 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Mar 2, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a hydrophilic polyolefin sintered material which is a water-absorbing sintered material of a polyolefin resin ice having a graft chain composed of at least one molecular chain selected from hydrophilic ethylenically unsaturated group-containing monomers and their polymers. This hydrophilic polyolefin sintered material has an average porosity of 20-80% by volume and an open cell having an average pore diameter of 1-150 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.