Method of increasing paper surface strength by using acrylic acid/acrylamide copolymer in a size press formulation containing starch
US8999111B2 · kind B2 · utility
7Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2012 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Dec 28, 2032 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/56
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention provides methods and compositions for increasing the strengthening effect of a starch coating on paper. The method involves contacting the starch with a synthetic polymer before the starch is cooked. This changes how the starch gelatinizes and how the polymer gets distributed on the paper resulting in greater paper surface strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.