Method of inhibiting wet strength resin deposition in papermaking felts
US5520781A · kind A · utility
5Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1995 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Feb 22, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S162/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to an improved press felt conditioning treatment which controls the deposition of poly(aminoamide)--epichlorohydrin type resins in a press felt. The treatment comprises applying to the felt an effective inhibiting amount of a conditioner comprising: an ethoxylated nonylphenol having greater than about 30 moles of ethoxylation; sodium n-hexadecyl diphenyloxide disulfonate; a fatty acid imidazoline or an alkylamidopropyldimethylamine which include an alkyl hydrophobe substituent having a carbon chain length of about 18.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.