Rosin emulsion sizing agent
US4943608A · kind A · utility
8Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1987 |
| Grant date | Jul 24, 1990 |
| Priority date | — |
| Expiry date | Oct 29, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/37
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A rosin emulsion sizing agent comprising a fortified rosin, an at least partially quarternized product copolymer principal consisting of a (meth)acrylic acid alkylaminoalkyl ester or amide monomer and water exhibits excellent sizing effect in a papermaking system of higher pH, higher water hardness and higher temperature, in which conventional anionic rosin emulsion sizing agents cannot effectively function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.