Method of making salt-sensitive binders and nonwoven webs
US8232345B2 · kind B2 · utility
3Cited by
60References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2011 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Feb 23, 2031 |
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.