Sca Hygiene Products Zeist B.v.

Sca Hygiene Products Ab

Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek

Other

Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno

Sca Hygiene Products Gmbh

X-Flow B.v.

Heineken Technical Services B.v.

Sca Hygiene Product Zeist B.v.

Heineken Supply Chain B.v.

Lhs Microfiltrations B.v.

Arie Cornelis Besemer

Jeffrey Wilson Thornton

Petter Bragd

Jan Matthijs Jetten

Thomas Jaschinski

Dorine Lisa Van Brussel-Verraest

Susanna Gunnars

Harm Jan Thiewes

André Mepschen

Jan Pieter Van Der Lugt

Sussan Sandberg

Ronald Van Den Dool

Elmar Van Mastrigt

Gunilla Himmelmann

Carolyn Berland

Chatrine Stridfeldt

Kent Malmgren

Ulla Forsgren Brusk

Herman Van Bekkum

Ronald Tako Marinus Van Den Dool

Bo Andreasson

Coenraad F Lerk

Harmannus Johannes Doddema

Wim Van Hartingsveldt

Hendrik Arend Van Doren

Marinus Pieter Harkes

Martinus Nicolaas Maria Mol

Stephan Cornelus Johannes Van Hoof

Anne Mieke Yvonne Wilhelmina Verwilligen

Bas Schraven

Dorine Lisa Van Brussel-Verreast

Luca Bemporad

Anne-Mieke Yvonne Wilhelmina Verwiiligen

Pia Kalentuin

Willem Van Hartingsveldt

Anne Mieke Verwilligen

Anne-Mieke Verwilligen

Anne-Mieke Yvonne Wilhelmina Verwilligen

Stephan Cornelus Johannes Maria Van Hoof

Anne-Mieke Yvonne Verwilligen

A method for cleaning process apparatus used for production of liquids, especially for cleaning filters, for example membrane filters. The apparatus is contacted with a solution of periodate. It is especially preferred that the cleaning process is carried out at a temperature between 15 and 95&#xb0; C.

Method for cleaning filter membranes

Absorbent product, such as a diaper, a sanitary napkin or an incontinence product, having a longitudinal and a lateral direction, including a back sheet, being distal from the body of the wearer in use of the product, and a top sheet, being proximal to the body of the wearer in use of the product, the product having a front part, a rear part and a crotch part lying between the front and rear parts, the product further including an absorbent structure, between the top and back sheet, extending longitudinally from the front part to the rear part, and whereby the product includes at least one starch-based odor control agent having a specific area of at least 5 m/g, preferably at least 10 m/g, more preferably at least 50 m/g, even more preferably at least 100 m/g, and most preferably at least 200 m/g. Hereby, an enhanced capacity to absorb malodorous compounds of large size intervals in wet and dry systems is achieved.

Absorbent product

A method for cleaning process apparatus used for production of liquids, especially for cleaning filters, for example membrane filters. The apparatus is contacted with a solution of peroxydisulphate. It is especially preferred that the cleaning process is carried out at a temperature between 15 and 95&#xb0; C.

Method for cleaning processing equipment selected from the group consisting of filters

A superabsorbent material with enhanced odour control and control of bacterial growth comprises a non-acidic, alkali-neutralizing compound selected from acid anhydrides, lactides, lactones and hydrolysable esters, especially cyclic acid anhydrides, lactides and lactones of &#x3b3;- or &#x3b4;-carboxylic acids. The superabsorbent material can be used in hygiene products such as diapers.

Hygienic absorbent with odour control

The invention concerns the use of a fiber modified with functions capable of interacting with microbial cell wall proteins for immobilizing micro-organisms in hygiene products. Those functions are particularly capable of interacting with anionic groups and amine groups, and are especially cationic groups and aldehydes, respectively. The fibers may be synthetic or cellulosic. Also hygiene products containing these fibers are described.

Bacteria trapping fibrous material

A superabsorbent article of the invention having improved odour control and microbial control, comprises a liquid-impervious back layer, a liquid-absorbing intermediate layer containing a partially neutralized, acidic hydrophilic polymer, especially a surface-crosslinked polyacrylate, and a liquid-pervious, non-absorbing top layer, and is characterised by comprising an alkali-neutralising agent which is evenly distributed in said absorbing intermediate layer.

Alkali-neutralising superabsorbent products

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

Cyclodextrins and other ecapsulating oligosaccharides can be bound to fibrous and/or polysaccharidic carriers by ionic bonds. The ionic bonds can be produced by introducing cationic or anionic groups into the cyclodextrins, and where appropriate, by introducing oppositely charged groups in the carrier material. The products can be used for odor control in the fibrous material.

Coupling of modified cyclodextrins to fibers

The invention concerns the use of a water-soluble or water-dispersible polymer having a molecular weight of at least 800, containing at least 5 aldehyde groups per molecule and at least 1 carboxyl group per molecule, the ratio of aldehyde groups to carboxyl groups being higher than 0.75:1, as a wet strength additive. The invention also discloses novel cationic derivatives thereof.

Aldehyde-containing polymers as wet strength additives

A process for producing nitrosonium ions is described, in which a nitroxyl compound such as TEMPO is oxidized using an oxidizing agent in the presence of a complex of a transition metal such as Mn, Fe, Cu, and a complexing agent such as a polyamine. The process is useful for the oxidation of carbohydrates containing at least 1 cyclic monosaccharide chain group carrying a carbaldehyde group per 100 or per 25 monosaccharide units and per molecule.

Process for producing nitrosonium ions

A cationic cellulosic fibre containing between 1 and 30 cationic groups and between 0.1 and 20 aldehyde groups per 100 anhydroglucose units is a suitable basis for producing paper and tissue products without the necessity of using non-biodegradable cationic polymers as wet strength additives. The cationic cellulosic fibre can be obtained by oxidation of the fibre to introduce aldehyde groups, followed by reaction of part of the aldehyde groups with a nitrogen-containing reagent such as betaine hydrazide hydrochloride. The fibre is advantageously combined with an anionic polymer such as monoaldehyde carboxyl-starch or with anionic cyclodextrin.

Cationic fibers

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 process is disclosed for producing an acidic superabsorbent polysaccharide derivative, comprising the steps of: (a) crosslinking at least one polysaccharide containing acidic groups, such as carboxymethyl cellulose and/or 6-carboxy starch, with a crosslinking agent to produce a gel; (b) if necessary, adjusting the pH of the polysaccharide to a value between 3.5 and 5.5; (c) comminuting the acidified polysaccharide gel; and (d) drying the comminuted polysaccharide at elevated temperature. The superabsorbent polysaccharide obtainable by this process has a pH below 5 and provides odour control when contacted with malodorous fluids.

Acidic superabsorbent polysaccharides

Growing community of inventors

Amerongen, Netherlands

Arie Cornelis Besemer