Method For Increasing The Dry Strength Of Paper, Paperboard, And Cardboard
Patent No. EP2443284 (titled "Method For Increasing The Dry Strength Of Paper, Paperboard, And Cardboard") was filed by Basf on Jun 7, 2010. The application was issued on Nov 18, 2020.
Patent Summary
Process for the production of paper, paperboard and cardboard with high dry strength by adding at least one trivalent cation, a water-soluble cationic polymer selected from the group of polymers containing vinylamine units and ethyleneimine units and a water-soluble amphoteric polymer to form a paper stock, dewatering the paper stock with sheet formation and drying the paper product obtained.
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EP2443284
- Application Number
- EP10724788A
- Filing Date
- Jun 7, 2010
- Status
- Patent Maintained As Amended
- Oct 16, 2020
- Publication Date
- Nov 18, 2020
- External Links
- Slate, Register , Google Patents