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:
Jan. 17, 2006
Filed:
May. 14, 2003
Thomas Jaschinski, Mannheim, DE;
Susanna Gunnars, Sundsvall, SE;
Arie Cornelis Besemer, Amerongen, NL;
Petter Bragd, Gothenburg, SE;
Thomas Jaschinski, Mannheim, DE;
Susanna Gunnars, Sundsvall, SE;
Arie Cornelis Besemer, Amerongen, NL;
Petter Bragd, Gothenburg, SE;
SCA Hygiene Products GmbH, Mannheim, DE;
Abstract
The present invention relates to a polysaccharide having functional groups, wherein said groups are aldehyde groups formed at positions Cand/or Cas well as at position Cof the anhydroglucose units of the polysaccharide chain. Preferably the polysaccharide is a cellulosic fibrous material whose primary and secondary hydroxyl groups of the cellulose are oxidized into aldehyde groups at least in part by means of TEMPO oxidation and periodate oxidation. The invention also concerns a paper or nonwoven comprising the above polysacaride. According to the invention a relative wet strength of more than 10% can be achieved.