Method of increasing paper bulk strength by using a diallylamine acrylamide copolymer in a size press formulation containing starch
US9840810B2 · kind B2 · utility
1Cited by
116References
5Claims
0Family size
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Key dates
| Filing date | May 22, 2017 |
| Grant date | Dec 12, 2017 |
| Priority date | — |
| Expiry date | May 22, 2037 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/24
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The disclosure provides methods and compositions for increasing the strength of a paper sheet. The method involves adding to the paper sheet an amine-containing polymer. The amine-containing polymer interacts with materials such as glyoxalated polyacrylamide or starch to make the paper stronger in terms including tensile strength, surface strength and bulk strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.