Sca Hygiene Products Zeist B.v.

Sca Hygiene Products Ab

Sca Hygiene Products Gmbh

Other

Petter Bragd

Arie Cornelis Besemer

Thomas Jaschinski

Susanna Gunnars

Jan Matthijs Jetten

Shabira Abbas

Gunilla Himmelmann

Jeffrey Wilson Thornton

Jeanette Annergren

Ronald Van Den Dool

Willem Van Hartingsveldt

Absorbent structure in an absorbent article such as a diaper, pant diaper, incontinence guard, sanitary napkin, wound dressing, bed protection etc. and comprising a compressed foam material () which expands upon wetting, at which the foam material () comprises at least two integrated layers () having different mean pore sizes.

Absorbent structure in an absorbent article and a method of producing it

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.

Oxidized polymeric carbohydrates and products made thereof

Primary hydroxyl groups in a substrate having both primary and secondary hydroxyl groups can be selectively oxidized to carbaldehyde and/or carboxyl groups by contacting the substrate with a cyclic nitroxyl compound in the presence of a peroxosulfate as a co-oxidant and by carrying out the reaction at a temperature below 30&#xb0; C. and at a pH below 9. The process is halogen-free and metal-free and is especially suitable for oxidizing polysaccharides.

Process for oxidizing primary alcohols

The present invention relates to a cellulose-containing fibrous material, wherein hydroxy groups were oxidized at the C(6) of glucose units of the cellulose into aldehyde and/or carboxy groups, a paper or nonwoven (product) made therefrom, in particular tissue (products) and a process for their manufacture. The paper or nonwoven (products) of the invention display excellent strength properties.

Oxidized cellulose-containing fibrous materials and products made therefrom

In a new process for oxidizing a primary and/or secondary alcohol, an oxidizing agent is used in the presence of a di-tertiary-alkyl nitroxyl, in an aqueous reaction medium at a pH of below 7. The di-tertiary-alkyl nitroxyl is especially 4-hydroxy-TEMPO, and the process is particularly advantageous for oxidizing carbohydrates such as starch.

Process of oxidizing primary alcohols

A simplified process for oxidizing starch and other polysaccharides in an aqueous solution or suspension using hypochlorite in the presence of a catalytic amount of a nitroxyl compound is described. The oxidation is process is bromide-free and is carried out at a pH between 7 and 8.3 and at a temperature between 15 and 25&deg; C.

Oxidation of polysaccharides with nitroxyls

An absorbent article comprising a polysaccharide-based highly absorbent material, which is produced by desiccating a cross-linked hydrogel using a polar solvent.

Growing community of inventors

Gothenburg, Sweden

Petter Bragd