The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2017
Filed:
Jun. 06, 2011
Erkki Iikka Sakari Rasanen, Helsinki, FI;
Leif Robertsen, Parainen, FI;
Veli-matti Vuorenpalo, Espoo, FI;
Asko Karppi, Turku, FI;
Kari Parviainen, Espoo, FI;
Olli Dahl, Tervakoski, FI;
Kari Vanhatalo, Helsinki, FI;
Erkki Iikka Sakari Rasanen, Helsinki, FI;
Leif Robertsen, Parainen, FI;
Veli-Matti Vuorenpalo, Espoo, FI;
Asko Karppi, Turku, FI;
Kari Parviainen, Espoo, FI;
Olli Dahl, Tervakoski, FI;
Kari Vanhatalo, Helsinki, FI;
Kemira Oyj, Helsinki, FI;
Abstract
The present invention relates to a process for producing microcellulose comprising a) acidifying fibrous cellulosic material, b) washing the acidified cellulosic material, c) optionally dewatering the washed cellulosic material, and d) hydrolyzing the washed or washed and dewatered cellulosic material under acidic conditions at a temperature of at least 120° C. and at a consistency of at least 8% on dry weight of the cellulose.