Polymeric additives obtained by salification of copolymers
US8492495B2 · kind B2 · utility
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14References
19Claims
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Key dates
| Filing date | Dec 9, 2008 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Jul 24, 2029 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a salified copolymer that can be obtained by salification, in an aqueous medium, using at least one amine containing at least one nitrogenous heterocyclic group, of a copolymer obtained from at least one cyclic anhydride-based or carboxylic acid-based monomer and from at least one styrene-based monomer, such as a styrene/maleic anhydride (SMA) copolymer. It also relates to the process for producing this salified copolymer, to a composition containing same, and also to the use of this composition for surface-treating, in particular coating, sizing and finishing, paper or cardboard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.