Wet strengthened fiber products, wet strengthening resins, and methods for making and using same
US10301777B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2017 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Jun 27, 2037 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/72
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Wet strengthened fiber products, wet strengthening resins, and methods for making such wet strengthened fiber products and wet strengthening resins. The wet strengthened fiber product can include a fiber web and an at least partially cured wet strengthening resin, which prior to at least partially curing, the wet strengthening resin can include a polyamide-epihalohydrin (PAE) resin and a cationic styrene maleimide (SMI) resin. The PAE resin can include a reaction product of a polyamidoamine and an epihalohydrin and the cationic SMI resin can include a reaction product of a styrene maleic anhydride (SMA) copolymer and an amine. The wet strengthened fiber product can include the wet strengthening resin in an amount of about 0.05 wt % to about 5 wt %, based on a dried weight of the wet strengthened fiber product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.