Compositions suitable as additives in the paper industry, preparation; use; and, paper comprising such

US6710175B2 · kind B2 · utility

Inventors

• Kevin R. Anderson · Cedar Rapids, US
• Anton Esser · Mannheim, DE
• Lawrence E. Fosdick · Oskaloosa, US
• Ki-Oh Hwang · Cedar Rapids, US
• Norbert Mahr · Schifferstadt, DE
• John McDonald · Emeryville, US
• Dogan Sahin Sivasligil · Overijse, BE
• Andreas Stange · Mannheim, DE
• Sarah Veelaert · Eppegem, BE
• Martin Wendker · Ludwigshafen am Rhein, DE

Key dates

• Filing date: Aug 31, 2001
• Grant date: Mar 23, 2004
• Expiry date: Aug 31, 2021

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H17/45
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

According to the present disclosure, starch/polymer combinations are provided. The preferred starch/polymer combinations are usable as paper additives, in the wet end of a papermaking process. Typical and preferred starch/polymer combinations of this type, result from combining a starch, having a polymer reactive carbonyl functionality, with a polymer, having a carbonyl reactive functionality, under conditions that allow for covalent interaction between the two. Typically usable components comprise oxidized starch and polymer having reactive primary or reactive secondary amine groups. Also provided are methods of preparing such combinations, methods of use, preferred papers including such combinations, and, analytical techniques usable in preparation of such combinations.