Paper or board treating composition of carboxylated surface size, polyacrylamide and crosslinker
US6281291A · kind A · utility
12Cited by
20References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1999 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Dec 30, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/43
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A composition useful in paper and board making comprises a carboxylated surface size containing at least 40 mole percent of hydrophobic groups and at least about 25 mole percent of carboxylated groups such as styrene-(meth)acrylic aicd copolymers or styrene-maleic acid (anhydride or salt) copolymers, a hydrophilic polyacrylamide and a crosslinking agent such as glyoxylated vinylamide polymers, formaldehyde, melamine-formaldehyde condensates and glyoxyl-extended materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.