Method to produce microcellulose

US9096692B2 · kind B2 · utility

Assignee

• Aalto University · FI

Inventors

• Olli Dahl · Tervakoski, FI
• Kari Vanhatalo · Helsinki, FI
• Kari Parviainen · Espoo, FI
• Mikael Svedman · Oberhaching, DE

Key dates

• Filing date: Jun 7, 2011
• Grant date: Aug 4, 2015
• Expiry date: Jun 7, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08B15/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for producing microcellulose comprising subjecting fibrous cellulosic material to acid hydrolysis at a temperature of at least 40° C. and at a consistency of at least 8% on dry weight of the cellulose, wherein the amount of added acid is from 0.2 to 2%, preferably from 0.5 to 1.5% on dry weight of the cellulose.