摘要:
Le procédé consiste à mettre des fibres de cellulose en contact avec un réactif cationique entre 20 et 90°C, en présence d'un agent alcalin, notamment de la soude et par le fait que la cellulose cationique obtenue est passée au moins une fois dans un homogénéisateur haute pression. Application notamment dans le domaine des industries agro-alimentaires, de cosmétiques, des industries chimiques, des industries pétrolières.
摘要:
The disclosed invention relates to a composition comprising finely divided particles of an inorganic material treated with a cellulose derivative modified by or containing at least one ionic substituent. The disclosed invention further relates to a method of providing paper of improved brightness. The disclosed invention also relates to a method of providing finely divided particles of inorganic material, treating the particles with a cellulose derivative modified by or containing at least one ionic substituent, and adding the treated particles to cellulose fiber during an alkaline process for making paper. Also, an alkaline paper comprising the finely divided particles of inorganic material treated with the cellulose derivative is disclosed.
摘要:
Disclosed is a process for making paper to enhance the softness of the paper produced without reducing its dry strength comprising adding a cellulosic polymeric binder resin to the pulp slurry at the wet end of a paper machine, the binder resin being a cellulosic polymer that exhibits a cloud point in aqueous solution, producing a wet paper web, and drying the web, the polymer being caused to coalesce into fine colloidal particles at a temperature above the cloud point either before or after it is added to the slurry.
摘要:
Polysaccharide der Formel (I) worin S eine Monosaccharideinheit und B einen an den Monosaccharidrest S über ein O-Atom gebundenen Rest der Formel (la) bedeuten, werden hergestellt durch Umsetzung von Polysacchariden mit einem Alkylhalogenid der Formel (II)
摘要:
This invention relates to a process for preserving paper sheets or webs, in which a solution of a deacidification agent and of a polymeric strengthening agent for the paper in an organic solvent or in a mixture of organic solvents is sprayed onto one surface of the paper, and in which a strong sucking action is exerted on the other surface of the paper so as to draw the solution through the entire thickness of the paper and also dry the treated paper at least partly. The invention also relates to a device for preserving paper sheets or webs according to the above defined process.
摘要:
The present invention relates to the use use of a high-density paper substrate (35a) made from cellulose fibres, as a gas-barrier material in a laminated packaging material (30) for packaging of oxygen sensitive products, and further to coated such high-density paper substrates (35) for increased gas barrier properties. The invention further relates to laminated packaging materials (30) comprising the high-density paper substrates or coated high-density paper substrates, and to packaging containers comprising the laminated packaging material, for packaging of oxygen-sensitive products.