The method of producing fibers or filaments of regenerated cellulose

 

The invention relates to a method for producing filaments of regenerated cellulose and can be used for the manufacture of knitted, or nonwoven textile surfaces. The method involves the extrusion of a solution of cellulose derivatives or of the same cellulose derivatives in the molten state through at least one spunbond hole with subsequent regeneration of the cellulose by treating the obtained filaments, providing stage: synthesis of silyl derivative of cellulose with silylium agent, removing the silyl derivative of cellulose from the reaction medium, extruding silyl derivative of cellulose in the form of a solution or melt processing thread decilious agent for the regeneration of cellulose and recuperation of siloxane, possible regeneration cilleruelo agent, based on the siloxane recovered at the stage of regeneration of the cellulose. The invention allows to obtain a thread without compromising the environment with properties similar to that of the filaments of artificial materials. Reduced profitability of the process 24 C.p. f-crystals.

Description text in facsimile form (see graphic material)W

dwarfling processing of cellulose to improve reactional ability, extrusion of a solution of cellulose derivatives or of the same cellulose derivatives in the molten state through at least one spunbond hole, characterized in that after the pre-processing is carried out the synthesis of the silyl derivative of cellulose with silylium agent and removing the silyl derivative of cellulose from the reaction medium and after extrusion - processing thread decilious agent for the regeneration of the cellulose and the recuperation of siloxane and possible regeneration cilleruelo agent of siloxane recovered at the stage of regeneration of the cellulose, where similarbuy agent corresponds to one of the following General formula:

in which n is from 0 to 20 inclusive;

R1- same or different, represent a normal or branched alkyl radical with 1-12 carbon atoms, or aromatic radicals;

R2- same or different, represent a normal or branched alkyl radical with 1-12 carbon atoms, or aromatic radicals;

R represent alkyl radicals, arylalkyl, aryl, alkylaryl or radicals having the following General formula:

sub>7and R8identical or different, denote hydrogen atoms or alkyl group with 1 to 4 atoms;

R6denote alkoxy or alkyl group containing 1-4 carbon atoms;

X denotes a radical of the following formula V:

where U denotes the carbon atom, nitrogen, oxygen, or sulfur;

T denotes the carbon atom, nitrogen, sulfur or phosphorus;

V represents an oxygen atom, sulfur or nitrogen, and T is distinct from U and V

2. The method according to p. 1, characterized in that cilleruelo the cellulose part of the hydroxyl groups have been replaced by organic groups.

3. The method according to p. 2, characterized in that the pretreatment of the cellulose is activated by ammonia under pressure and throttling or explosion environment.

4. The method according to any of paragraphs.1-3, characterized in that the cellulose has a degree of polymerization of from 100 to 5000.

5. The method according to any of paragraphs.1-4, characterized in that cilleruelo cellulose before sellerbuyer pre-mixed into the swelling agent.

6. The method according to p. 5, characterized in that the mass ratio of the cellulose to the swelling agent is from 0.05 to 0.95.

7. The method according to p. 6, characterized in that similitude agent is consistent with the overall f is present, however, what similarbuy agent corresponds to the General formula I, and the mass ratio of the cellulose to the swelling agent is from 0.05 to 0.15.

9. The method according to any of paragraphs.6-8, characterized in that the swelling agent is chosen from the group consisting of N-organic, dimethylacetamide, N-methylmorpholine and dimethylformamide.

10. The method according to any of paragraphs.1-9, characterized in that the reaction sililirovanie carried out in the presence of a catalyst of sililirovanie selected from the group comprising acidic catalysts, proton acid, Lewis acid and a strong base.

11. The method according to p. 10, characterized in that the catalyst is chosen from the group comprising p-toluensulfonate, pyridinium salt of p-toluenesulfonic acid, triperoxonane acid, p-cryptomaterial-acid, tripersonality, hydrochloric acid, chlorides of iron (III) and iron (II) chloride tin or pyridine.

12. The method according to any of paragraphs.1-11, characterized in that the molar ratio cilleruelo agent to the number of substituted hydroxyl groups of cellulose is estimated from the stoichiometric ratio to 15 times greater than stoichiometric.

13. The method according to any of paragraphs.1-12, characterized in that similarwisconsin, second-butoxydiglycol, isobutoxyethene, ethoxytrimethylsilane, octylimidazolium, cyclohexanecarbonitrile, or alkoxysilane, such as butoxymethylethoxy.

14. The method according to any of paragraphs.1-13, characterized in that similitude agents of General formula IV is obtained by reaction of alkylperoxy with compounds from the group comprising the SO2, SO3, CO2, R2O5CH2=C=O, HCNO.

15. The method according to any of paragraphs.1-14, characterized in that the part cilleruelo agent is added to the reaction mixture at a temperature of from 20 to 50With, while another part siluroidea agent is added to the reaction mixture after heating the latter to a temperature above 60C.

16. The method according to any of paragraphs.1-15, characterized in that Siciliano cellulose is recovered from the reaction mixture by precipitation, centrifugation, distillation, filtration.

17. The method according to any of paragraphs.1-16, characterized in that after the stage of sililirovanie acid catalyst sililirovanie neutralize the base.

18. The method according to any of paragraphs.1-17, characterized in that Siciliano cellulose is dissolved in a solvent selected from the group of: N-methylpyrrole hydrofuran, dimethyl sulfoxide, tetramethylrhodamine, tetramethylthiuram.

19. The method according to p. 18, characterized in that the solution Siciliano cellulose estradiol through at least one spunbond hole, pariva solvent after exiting the hole.

20. The method according to any of paragraphs.1-17, characterized in that Siciliano cellulose is heated to a temperature which is at least 5From above its melting temperature, and then ekstragiruyut through at least one spunbond hole.

21. The method according to p. 20, characterized in that the melting point Siciliano cellulose ranges from 200 to 350C.

22. The method according to any of paragraphs.18-21, characterized in that thread Siciliano pulp process regenerating the cellulose medium.

23. The method according to p. 22, wherein the regeneration medium is an acidic aqueous solution containing alcohol.

24. The method according to any of paragraphs.1-23, characterized in that the filament of regenerated cellulose is subjected to at least one operation of the hood.

25. The method according to any of paragraphs.1-24, characterized in that the filament of regenerated cellulose is subjected to a treatment selected from the group comprising obrabotki, the processes of dyeing, relaxation, texturing and perming.

 

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3 cl, 34 ex, 4 tbl

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14 cl, 6 dwg, 4 tbl, 8 ex

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