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US 2012/0067535 A1Published application
Process for Improving Paper Strength
AssigneeBASF SE
InventorsSuleman Buwono, Gary Reddihough, Jozef Maria Leonardus Dogge
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Abstract
The present invention provides a process for preparing a paper or paper board of improved strength which comprises the steps of i) providing a cellulosic thick stock, ii) diluting the thick stock of step i) to form a thin stock, iii) draining the thin stock of step ii) on a wire to form a web, and iv) drying the web of step iii) to form paper or paper board, wherein the cellulosic thick stock of step (i) comprises organic polymeric microparticles, as well as paper obtainable by above process.
Claims5
Paper or paperboard obtained by a process comprising the steps of:
- i) providing a cellulosic thick stock,
- ii) diluting the cellulosic thick stock of step i) to form a thin stock,
- iii) draining the thin stock of step ii) on a wire to form a web, and
- iv) drying the web of step iii) to form paper or paper board,
- wherein the cellulosic thick stock of step (i) comprises organic polymeric microparticles.
2 more elements
Dependencies are inferred from the claim text.