Super absorbent polymer
US10829630B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2017 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Mar 18, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2333/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a super absorbent polymer which maintains excellent absorption performance and retains physical properties even after being physically damaged by an external force. The super absorbent polymer comprises: a base polymer powder including a first cross-linked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; and a surface cross-linked layer formed on the base polymer powder and including a second cross-linked polymer in which the first cross-linked polymer is further cross-linked via an alkylene carbonate having 2 to 5 carbon atoms, wherein the super absorbent polymer satisfies predetermined physical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.