KR880000629A - Individualized and Crosslinked Cellulose Fibers and Methods of Making the Same - Google Patents

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Individualized and Crosslinked Cellulose Fibers and Methods of Making the Same

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Claims (12)

Cellulose fibres are present in substantially individual form and calculated on the basis of cellulose anhydroglucose molar C ₂ -C ₈ dialdehyde, C | with at least one aldehyde group. _It is selected from the group consisting of ₂ -C ₈ dialdehyde acid derivatives and oligomers of the dialdehyde and dialdehyde acid derivatives and contains 0.5 mol% to 3.5 mol% of a crosslinking agent reacting with the cellulose fibers in the form of intra-crosslinking bonds, Individualized and crosslinked cellulose fibers, characterized in that the WRV of the fibers is less than 60. The individualized and crosslinked fiber of claim 1, wherein the fiber contains from 0.75 mol% to 2.5 mol%, calculated on the basis of cellulose anhydrous glucose, to which the fiber reacts in the form of an intrafibrous crosslink bond. The individualized and crosslinked fiber of claim 1 or 2, wherein the crosslinker is selected from the group consisting of glutaraldehyde, glyoxal and glyoxylic acid. 4. The individualized crosslinked fiber of claim 3, wherein the crosslinker is glutaraldehyde. 5. The individualized and crosslinked fiber according to claim 2, wherein the WRV is 28 to 50. 6. Providing a cellulose cell fiber, wherein the fiber is selected from the group consisting of C ₂ -C ₈ dialdehydes, C ₂ -C ₈ dialdehyde acid derivatives having at least one aldehyde group and oligomers of the aldehyde and dialdehyde acid derivatives After contact with a crosslinking agent, the crosslinker is reacted with the fiber in the substantial absence of interfiber bonds to form an intrafibrous crosslinking bond, wherein from 0.5 mol% to 3.5 mol% calculated on the basis of cellulose anhydrous glucose A method of making individualized crosslinked cellulose fibers in which the WRV of the fibers after crosslinking is less than 60, characterized by contacting the fibers with a sufficient amount of crosslinking agent to react with the fibers to form an intrafiber crosslinking bond. Providing cellulose fibers, the fibers being selected from the group consisting of C ₂ -C ₈ dialdehydes, C ₂ -C ₈ dialdehyde acid derivatives having at least one aldehyde group and oligomers of the dialdehyde and dialdehyde acid derivatives Contacting the solution containing the crosslinking agent and mechanically separating the fibers in a substantially separate form, followed by drying the fibers, and forming the crosslinking bond with the crosslinking agent present in the substantially individual form. A fibrosis reaction to form an intrafiber crosslinking bond, wherein a sufficient amount of crosslinking of the fiber is performed so that from 0.5 mole% to 3.5 mole% of the crosslinking agent reacts with the fiber to form an intrafiber crosslinking bond, calculated on the basis of cellulose anhydrous glucose. Characterized by contact with the binder, individualized and combustible Method of manufacturing a T-bonded cellulose fibers. Providing a cellulose fiber, the fiber being selected from the group consisting of C ₂ -C ₈ dialdehydes, C ₂ -C ₈ dialdehyde acid derivatives having at least one aldehyde group and oligomers of the dialdehyde and dialdehyde acid derivatives After contact with a crosslinkable solution containing a crosslinker, the crosslinker is reacted with the fiber in the substantial absence of interfiber bonds to form an intrafiber crosslinking bond, wherein 0.5 is calculated based on the moles of cellulose anhydrous glucose. Molar% to 3.5 mole% of the crosslinking agent is contacted with a sufficient amount of crosslinking agent to react with the fiber to form the intrafiber crosslinking bond, and the crosslinking agent also contains a water miscible polar diluent and an insufficient amount of water. A fiber containing 30% by weight of water reacted with the fiber in a crosslinkable solution; A larger level than in response to the degree of swelling way to personalize features Sikkim swelling the fibers have been manufactured and false-twist the crosslinked cellulose fibers. Providing a cellulose fiber, wherein the fiber is selected from the group consisting of C ₂ -C ₈ dialdehydes, C ₂ -C ₈ dialdehyde acid derivatives having at least one aldehyde group and oligomers of the dialdehyde and dialdehyde acid derivatives in an aqueous solution. Contacting with the crosslinking agent selected, the solution contains a sufficient amount of crosslinking agent such that the fiber is not substantially swollen, and the fiber has a moisture content of less than 30% by weight based on the total weight of the fiber after the fiber is defluidized Drying the fiber: contacting the fiber with a water miscible polar diluent and an insufficient amount of water to swell the fiber to a degree of swelling above the corresponding degree of swelling with the fiber having a moisture content of 30% by weight, and then React with the fiber to form an intrafiber crosslinking bond, wherein the cellulose anhydrous lucose mole Individualized and crosslinked cellulose fibers, characterized by contacting the fibers with a sufficient amount of crosslinker such that from 0.5 mol% to 3.5 mol% of the crosslinker reacts with the fibers to form the intrafiber crosslinking bond, calculated on the basis of How to prepare. 10. The method of any of claims 6-9, wherein the crosslinker is glutaraldehyde. The method according to any one of claims 6 to 10, characterized in that from 0.75 mol% to 2.5 mol% of a crosslinking agent is reacted with the fiber to form an intra-fiber crosslinking bond calculated on the basis of the cellulose anhydrous lucose mole. To make individualized and crosslinked cellulose fibers. Individualized and crosslinked fiber, characterized in that the fiber is produced according to the method of any one of claims 6-11. ※ Note: The disclosure is based on the initial application.