Method for disintegrating hydrate polymer and method for production of water-absorbent resin
US7694900B2 · kind B2 · utility
2Cited by
7References
6Claims
0Family size
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Key dates
| Filing date | Apr 22, 2004 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Apr 22, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2300/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for disintegrating a hydrate polymer characterized by disintegrating a hydrate polymer having a solid content in the range of 50-70 wt. % with a screw extruder while supplying 0.1-30 parts by weight of water per 100 parts by weight of the polymer to the extruder. Since the product of disintegration is prevented from inducing mutual adhesion, it does not form masses of conglomeration when it is dried.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.