Salt-sensitive binders for nonwoven webs and method of making same
US7989545B2 · kind B2 · utility
5Cited by
54References
44Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 25, 2006 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Jan 7, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F220/54
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A solution with a salt-sensitive polymer binder for use in fibrous webs, where the binder contains a copolymer of carboxylic acid monomer units and ethylenically unsaturated monomer units. The binder solution is prepared by emulsion-polymerizing a copolymer and then neutralizing the copolymer with base to make it water soluble. The binders provide a higher wet strength in concentrated salt solutions than in deionized water, and are particularly suitable for strengthening nonwoven fibrous webs in disposable articles such as wet-wipes, personal care products, diapers, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.