Sizing of paper
US6306255A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2000 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | May 15, 2020 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/26
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to an aqueous disperion containing a cellulose-reactive sizing agent and an anionic hydrophobicailly modified cellulose-derivative, its preparation and use in the production of paper. The invention also relates to a substantially water-free composition containing a cellulose-reactive sizing agent and an anionic hydrophobicailly modified cellulose-derivative, its preparation and use in the preparation of an aqueous dispersion of cellulose-reactive sizing agent. The invention further relates to a process for sizing cellulosic fibers by addition of an aqueous sizing dispersion containing a cellulose-reactive sizing agent and a hydroically modified dispersing agent to a stock containing cellulosic fibers, and optional fillers, and dewatering the stock on a wire to obtain a web containing cellulosic fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.