WO1993010171A1 - Procede de production de moulages en cellulose - Google Patents
Procede de production de moulages en cellulose Download PDFInfo
- Publication number
- WO1993010171A1 WO1993010171A1 PCT/JP1992/001514 JP9201514W WO9310171A1 WO 1993010171 A1 WO1993010171 A1 WO 1993010171A1 JP 9201514 W JP9201514 W JP 9201514W WO 9310171 A1 WO9310171 A1 WO 9310171A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cellulose
- physical properties
- solution
- weight
- dope
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/02—Cellulose; Modified cellulose
Definitions
- the present invention relates to a method for producing a regenerated phenolic molded article, represented by fibers, films, fine particles, and the like.
- molded cellulose products are produced by dissolving cellulose in a solvent by a certain method and pouring the resulting solution into a non-solvent medium.
- the method of dissolving cellulose which is used industrially for the above purpose, has been discovered almost 100 years ago (late 1890s).
- the biscourse method in which carbon disulfide is reacted with the cellulose, and then dissolved in alcohol
- the copper copper method in which cellulose is dissolved in a copper ammonia solution. .
- Cellulose molecules in the solution obtained by these methods are not dissolved in the form of the cell mouth as they are, but rather are a certain type of cellulose derivative (the cell mouth per suspension in the viscos method, It dissolves as cell-copper-a-copper-ammonium complex in the Copper Copper Method. Therefore, in the production of cellulose molded products, a process of returning cellulose derivatives to cellulose is required, other than coagulation.
- methods for dissolving cellulose include cadoxen (force domethylene ethylenediamine / alkali), nioxene (nickel zethylenediamine zalkaline), and (iron tartrate / alkaline).
- cadoxen force domethylene ethylenediamine / alkali
- nioxene nickel zethylenediamine zalkaline
- iron tartrate / alkaline metallic bodies were mainly studied, but they did not surpass the copper cheap method or the viscose method in terms of safety and economy. Either of the above methods cannot avoid the generation of toxic gas and heavy metals during the process of preparing solutions and manufacturing molded products, and there are problems from the viewpoint of working environment and global environment .
- JP-A-62-240328 and JP-A-62-620329 attempts to produce a cellulose molded article by an environmentally friendly process have been made. A few are being made.
- cellulose is subjected to a physical treatment such as an explosion treatment to solubilize it in an alkaline solution, which is dissolved in an aqueous alkali solution and wet-molded.Hazardous substances such as carbon disulfide, heavy metals, and organic solvents are used. No method has been disclosed for producing cellulose molded products without pollution.
- An object of the present invention is to provide a method for producing a molded cellulose product having good physical properties without using harmful substances such as toxic gases and heavy metals. That is, an object of the present invention is to provide a method for producing a next-generation cellulose molded product which is sufficiently satisfactory from an industrial viewpoint and an environmental problem viewpoint.
- a cellulose dope substantially consisting of an alkali-soluble cellulose and a 5 to 15% by weight aqueous alkali solution is treated with an acidic aqueous solution having a specific condition, that is, a temperature above the freezing temperature and less than 20 times. After solidification, stretching is performed, followed by heat treatment.
- a feature of the present invention is that the internal structure of the molded article is sufficiently densified in the process of wet molding a dope obtained by dissolving cellulose in an aqueous alkali solution.
- the internal structure has two meanings: a so-called solid structure and a higher-order structure.
- solid structure and crystal structure, amorphous structure, hydrogen bonding, molecular orientation, etc. are evaluated by methods such as X-ray wide angle diffraction, solid KMB, and birefringence.
- the higher-order structure referred to here is a structure with a larger dimension (di mension) than the solid structure, and refers to an aggregate structure such as the existence and distribution of voids in a solid.
- Coagulates wet-molded with acidic aqueous solutions often contain more than four times as much coagulant as cellulose and have a loose internal structure. This is stretched by a factor of at least 1.55.
- the coagulant inside the coagulated material is discharged to the outside, and the internal structure is densified.
- the molecular chains in the amorphous region inside are oriented in the stretching direction, and accordingly, the microcrystals are also oriented in the stretching direction.
- the densification and molecular orientation of this structure both increase the tensile strength of the molded product and improve its physical properties.
- the same effect can be obtained with the same mechanism.
- Alkali-soluble cellulose used in the method of the present invention is preferably a cellulose having a solubility of 90% or more in an aqueous alkali solution having a concentration of 5 to 15% by weight at a low temperature.
- 60-42401, JP Cellulose as disclosed in JP-A-62-11660 is preferably used.
- a low-substituted cellulose derivative may be used as long as it is soluble in an aqueous alkaline solution at a low temperature. The degree of substitution is preferably 0.2 or less.
- Suitable substituents include, for example, a methyl group, an ethyl group, a hydroxydityl group, a hydroxypropyl group, a cyanoethyl group, a carboxymethyl group, and the like; any other substituent may be used. . One or more of these substituents may be present.
- the degree of polymerization of cellulose is preferably at least 100 in consideration of the physical properties of the obtained molded article and the operability during molding.
- the concentration of cellulose is a problem to be determined depending on the degree of polymerization of cellulose and the composition of the solvent.
- the content of cellulose is 3% by weight or more from the viewpoint of economy and physical properties of the obtained molded article.
- an aqueous solution of an alkali hydroxide such as sodium hydroxide or lithium hydroxide is preferably used.
- the concentration of the alkaline aqueous solution is 5 to 15% by weight, and the preferred concentration varies depending on the type of the alkaline aqueous solution.
- sodium hydroxide ⁇ 10% by weight is preferably used.
- a third component for example, a metal oxide (titanium oxide, zinc oxide), a surfactant, a bridging brim, or a soluble polymer may be added.
- the alkali solution of cellulose (hereinafter simply referred to as “dope”) obtained by the above method is obtained by coagulating an acidic aqueous solution at a temperature of 20 ° C. or lower, preferably at a concentration of 0.5 to 15 N.
- Molded using Acids constituting the acidic aqueous solution include sulfuric anhydride, sulfuric acid, halogenated sulfuric acid, thiosulfuric acid, sulfurous acid, hydrochloric acid, hydrobromic acid, hydrofluoric acid, nitric acid, sintering acid, pyrrolic acid, metallic acid, and polylactic acid.
- Acids, hypophosphorous acid, acetic acid, trifluoroacetic acid, and the like can be used, and at least one selected from these is used.
- salts may be added to these aqueous solutions for use.
- a suitable concentration of the acidic aqueous solution cannot be specified unambiguously because it differs depending on the type of acid used and the coagulation temperature.However, if it is less than 0.5, the coagulation force is weak and the coagulation speed is slow. However, it is not preferable in terms of spinnability. On the other hand, if it exceeds 15 norm, cellulose has a degrading action, dissolving action, or denaturing action, it is thick, and its viscosity becomes high. Not good.
- a 5% to 80% by weight aqueous sulfuric acid solution is preferably used. It is difficult to limit the temperature of the coagulation bath during molding because it does not uniquely control the physical properties, but it is more preferable that the coagulation bath temperature is less than 15 and the draw ratio tends to increase. In addition, the elongation of the internal structure when stretched is large and the physical properties are large. If the coagulation bath is frozen, it cannot be used as a coagulation bath, needless to say. Further, depending on the molding method, the heat of the dope is taken away by the coagulation bath before the start of coagulation, and the dope freezes and becomes unsuitable. This depends heavily on the coagulation method. The minimum temperature at is not clearly defined. On the other hand, above room temperature, for example, above 40, the hydrolysis of the coagulant breaks down the main molecules of the cellulose molecules and gels the dope depending on the molding method, which is preferable. Absent.
- the coagulated material can be extended by various methods.
- continuous solids are sequentially brought into contact with a pair of rolls having different peripheral speeds, successively passed through two pairs of nip rolls having different peripheral speeds, or a train running at a constant speed.
- a method in which the continuous solidified material is brought into contact with another object to generate a speed difference between the front and the rear of the object by frictional resistance is suitably used.
- the coagulated material is curtains, strands, and tough. If the LD is extremely large, spirally wrap it around a pair of O ⁇ and move it to a position with a larger diameter. Stretching can also be added. Further, the stretching is not necessarily continuous, and for example, a stress may be applied by grasping both ends of the solidified material by an appropriate method.
- the stretching ratio should be at least 1.05 or more, and the upper limit is the solidification condition.
- the maximum draw ratio can vary depending on the coagulation and spinning method, but if it is drawn twice or more, it often breaks (yarn breaks in fiber, tears in film), or has an internal structure. Destruction may occur and physical properties may be reduced.
- the temperature during stretching is not particularly limited. It is also possible to provide a bath with a composition and temperature different from that of the coagulation bath and to stretch in this bath.Depending on the choice of bath, the maximum draw ratio may be increased and the physical properties may be further improved. is there.
- the film forming method there is no particular restriction on the wet molding method, and it is sufficient to perform the ordinary method.
- any spinning method such as stationary bath, fluidized bath, air gear sop spinning, etc. is used for the spinning dope using wet nozzles with ordinary pores or nozzles for hollow fibers. It doesn't matter.
- the film forming solution may be cast on a supporting plate such as a glass plate using an applicator knife coater, and then coagulated into the acidic aqueous solution. Of course, it may be discharged directly into the coagulation bath using a slit nozzle.
- the cellulose molded product solidified and stretched by this method is then subjected to a heat treatment to be a final molded product.
- the effect of the heat treatment of the present invention is to rearrange the molecular chains by the plasticizer, heat, shrinkage stress and the like, to increase the integrity of the solid structure, and to increase the wet strength and the wet modulus of the final product.
- Heat treatment is usually carried out in the presence of plasticizers such as water, aqueous alkaline solutions, PH buffers, and glycerin. It is carried out at temperatures above C and below 250-heat treatment temperature 80. Less than 250C is less effective. If it exceeds C, decomposition of cellulose tends to occur. More preferably, it is carried out at an O temperature of 100 ° C.
- the processing time is limited because cellulose is decomposed.
- the temperature is 120, the treatment time is not more than 180 minutes, but there is no problem.
- the time becomes shorter.
- the amount of the e plasticizer is preferably 10% by weight or more based on the cellulose. More preferably, it is at least 20% by weight and less than 100% by weight. When the amount of the plasticizer is 100% by weight or more, the degree of swelling of the obtained molded product is reduced, but the increase in the wet strength is small.
- cellulose As a means of actually performing the heat treatment, for example, it is possible to heat cellulose to 100 ° C or more, such as water vapor, glycerin, silicone oil, metal rolls, micro tubes, air, and infrared rays. Any of these may be used, but usually, steam and glycerin are preferably used. These measures may be performed in combination of two or more as necessary. For example, in the case of raw silk after coagulation and Z stretching, heat treatment is performed on a heated metal roll in the presence of water, but the effect is low due to the short residence time when the water content is 10% by weight or more and less than 100% by weight. Few. Therefore, if further improvement in physical properties is desired, steam treatment or the like may be used in combination. Examples of the steam treatment include saturated steam and superheated steam treatment.
- Heat treatment with superheated steam has the advantage that the treatment pressure can be reduced at the same temperature as compared with saturated steam, and is advantageous when heat treatment is performed continuously.
- the degree of superheat is high, water from the molded product will evaporate significantly, so it is necessary to adjust the moisture content of the molded product to a higher level beforehand so that the plasticizer concentration during processing will be the prescribed concentration. Good.
- glycerin has a high boiling point and can be heat-treated at normal pressure
- heat treatment can be performed using, for example, a heating roll or a heating plate.
- the obtained dope was filtered using two 200-mesh wire meshes and one piece of a polyamide nonwoven fabric, allowed to stand naturally under a vacuum, and defoamed to obtain a stock solution for spinning.
- the undiluted spinning solution is discharged from a nozzle having 50 holes of 0.05 mm0 into a coagulation bath (immersion length: 50 cm) consisting of one 20% sulfuric acid aqueous solution (immersion length: 50 cm).
- the peripheral speed (mZmin) of the first Nelson roll (NR1) and the second Nelson roll (NR2) was changed as shown in Table 11, and the stretching ratio was changed.
- the film was sufficiently washed with water, heat-treated using a 120 ° C metal roll, and wound around a paper tube for 20 mm.
- Table 11 shows the spinning conditions and physical properties. As is evident from Table 1, the dry strength and wet strength are improved as the draw ratio is increased to 1.1 times, 1.3 times, and 1.6 times as compared with the case where the draw ratio is 1.0. When the draw ratio was 2.0, yarn breakage frequently occurred during the drawing process, and it was not possible to sample constantly.
- the fiber obtained by the above method was put into an autoclave at a fixed length, and heat-treated with 120 kinds of saturated steam for 15 minutes.
- the saturated steam treatment is an effective means for increasing the wet strength and the wet modulus, and it is necessary to select an efficient heat treatment method depending on the desired physical properties. is there. If the moisture strength is practically 0.6 g / d or more, there is no problem as an arrowhead for clothing.
- a softwood valve (Alaska pulp) with a polymerization degree of 1300 were immersed in 1000 parts for 3 hours, and then the water was dehydrated with a dehydrator to obtain 190 parts of cellulose water.
- the cellulose obtained from this water was subjected to a simple steam treatment at 235 for 25 seconds using an explosion treatment device (manufactured by Nippon Kagaku Kikai) to obtain cellulose soluble in an aqueous alkali solution with a polymerization degree of 340.
- 100 g of this cellulose was dissolved in 1900 g of an 8% by weight aqueous sodium hydroxide solution at 5'C using a homogenizer to obtain a uniform dope.
- the solubility of Lurose was 97%.
- the obtained dope was filtered using two 300 mesh metal nets and two polyamide non-woven fabrics, and then defoamed by standing naturally to obtain a spinning stock solution.
- This The spinning stock solution was discharged from a nozzle having 100 holes with a diameter of 0.06 per inch into a coagulation bath composed of sulfuric acid having a concentration shown in Table 12 at a discharge rate of ⁇ . ⁇ using an extruder equipped with a gear pump.
- the temperature of the coagulation bath is 11 S ° C and the immersion length is 25 ctn for sulfuric acid concentrations of 3 to 40% by weight, and the immersion length is 15 cm for sulfuric acid concentrations of 65 to 85% by weight.
- the film was stretched 1.20 times between the jaws, dried on a hot roll after passing through a washing process, and wound up on a paper tube at 24 m / min. Then, the treatment was performed while running the yarn continuously in saturated steam. The treatment temperature was 120, the treatment was performed for 30 seconds, and the sheet was wound again at 5 m / min.
- Table 1-2 shows the solidification conditions and the obtained physical properties.
- the spinnability was evaluated by the naked eye and classified into three types: good ( ⁇ ), slightly bad (mm), and no thread (X). The spinnability was good except when the sulfuric acid concentration was 3% and 85% by weight.
- physical properties dry strength, dry elongation equivalent to those of existing regenerated cellulose fibers can be obtained, and the fibers can be sufficiently used as clothing fibers.
- the solubility of cellulose was 97%.
- the obtained dope was filtered using two 300-mesh metal nets and two polyamide non-woven fabrics, and then defoamed by natural standing to obtain a spinning dope.
- this spinning stock solution was discharged from a nozzle having 100 holes of 0.080 into a coagulation bath consisting of a 25% by weight aqueous sulfuric acid solution.
- the coagulation bath temperature was varied up to 20'C and 25'C as shown in Table 13 and solidification was performed under the condition of an immersion length of 45 cm.Then, it was twice as simple as the first and second Nelson rolls.
- the film was stretched, sufficiently purified in a water-washing and hot-water washing process, subsequently heat-treated on a 120 ° C hot roll, and wound around a paper tube with ⁇ . Further, a part of the obtained textile was put into an autoclave at a fixed length, and heat-treated with saturated steam of 110 • C for 15 minutes.
- Table 13 shows the relationship between the physical properties of the arrowhead fiber and the coagulation bath temperature. When the coagulation bath temperature was -20'C, the dope was slightly frozen in the coagulation bath, so that the structure was formed without densification of the aggregated structure, resulting in an arrowhead with poor physical properties.
- the coagulated yarn in the coagulation bath is transparent.
- the formation of a cohesive gel yarn having high sensibility and clearly extensible was confirmed.
- the lower the coagulation bath temperature the better the physical properties. I understand.
- fibers with high physical properties can be obtained even by treatment on a hot roll, but it can be seen that if fibers with higher physical properties are desired, further steam treatment should be performed.
- a solution of soluble cellulose 100 prepared according to the method of Example 1 was dissolved in 1900 g of a 5.6% by weight aqueous solution of lithium hydroxide using a homogenizer. A uniform dope was obtained. The resolution of cellulose was 99%. The obtained dope was filtered using two 300-mesh metal nets, and then defoamed by standing naturally to obtain a stock solution for film formation. This membrane stock solution was cast on a glass plate using an applicator with a casting thickness of 1 mm, immersed in a 15 solidification bath having the composition shown in Table 15 for 5 minutes, and then removed. The film was stretched 1.20 times with a hand-drawn stretching machine. After that, it was thoroughly washed with cold water (5).
- Cellulose was prepared and dissolved in the same manner as in Example 1 to obtain a spinning stock solution.
- the spinning nozzle used had 100 holes with a diameter of 0.08, and was extruded at a discharge rate of SOmlZmin from an extruder equipped with a gear pump.
- C was discharged into a 20% by weight sulfuric acid aqueous solution of C (immersion length 52 cm).
- the peripheral speed of the second Nelson roll was set to 112 m / min, stretched 1.4 times, and the roll was washed thoroughly with water. Next, it was heat-dried with a 110'C metal roll and wound around a paper tube at a speed of 112 m / min.
- the resulting cellulose fibers were continuously treated with 120 saturated steams.
- the processing time was 4 sec and the processing was fixed length.
- Table 6 shows the physical properties before and after the saturated steam treatment. As can be seen from the table, heat treatment with ordinary metal rolls alone shows sufficiently practical physical properties. The ones that have been further heat-treated with Japanese steam increase the wet strength and increase the practical value of the fabric.
- the present invention relates to a process for producing a cellulose molded product having good physical properties from a dope substantially composed of cellulose, alkali and water, and there is no danger of generation of waste gas or explosion during the molding process in terms of process. It has the advantage of providing a process that is free of environmental pollution due to wastewater and waste gas.
- the existing arrowhead film which has been difficult in the prior art to obtain a molded cellulose product having good physical properties from a dope consisting essentially of cellulose, aluminum and water, has been difficult.
- a molded cellulose product having the same mechanical properties as that of the above is obtained. Also, when wet Mechanical properties (wet modulus, wet strength) can also be improved.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9314855A GB2269559B (en) | 1991-11-19 | 1992-11-19 | Method for producing cellulose shaped article |
DE4293958T DE4293958T1 (de) | 1991-11-19 | 1992-11-19 | Verfahren zur Herstellung von Formteilen aus Cellulose |
US08/087,798 US5401447A (en) | 1991-11-19 | 1992-11-19 | Process for producing celluose moldings |
DE4293958A DE4293958B4 (de) | 1991-11-19 | 1992-11-19 | Verfahren zur Herstellung von Formteilen aus Cellulose |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30321491A JP3190979B2 (ja) | 1991-11-19 | 1991-11-19 | セルロース成型品の製造方法 |
JP3/303214 | 1991-11-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993010171A1 true WO1993010171A1 (fr) | 1993-05-27 |
Family
ID=17918254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1992/001514 WO1993010171A1 (fr) | 1991-11-19 | 1992-11-19 | Procede de production de moulages en cellulose |
Country Status (6)
Country | Link |
---|---|
US (1) | US5401447A (ja) |
JP (1) | JP3190979B2 (ja) |
CA (1) | CA2100756C (ja) |
DE (2) | DE4293958B4 (ja) |
GB (1) | GB2269559B (ja) |
WO (1) | WO1993010171A1 (ja) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997030196A1 (en) * | 1996-02-14 | 1997-08-21 | Akzo Nobel N.V. | Process for preparing cellulose fibres and filaments |
US6471727B2 (en) | 1996-08-23 | 2002-10-29 | Weyerhaeuser Company | Lyocell fibers, and compositions for making the same |
US6331354B1 (en) | 1996-08-23 | 2001-12-18 | Weyerhaeuser Company | Alkaline pulp having low average degree of polymerization values and method of producing the same |
US6210801B1 (en) | 1996-08-23 | 2001-04-03 | Weyerhaeuser Company | Lyocell fibers, and compositions for making same |
US6306334B1 (en) | 1996-08-23 | 2001-10-23 | The Weyerhaeuser Company | Process for melt blowing continuous lyocell fibers |
AT405847B (de) * | 1996-09-16 | 1999-11-25 | Zellform Ges M B H | Verfahren zur herstellung von rohlingen oder formkörpern aus zellulosefasern |
US6106763A (en) * | 1997-11-20 | 2000-08-22 | Institute Of Chemical Fibres | Process for producing cellulosic mouldings |
US6773648B2 (en) | 1998-11-03 | 2004-08-10 | Weyerhaeuser Company | Meltblown process with mechanical attenuation |
US20030032705A1 (en) * | 2001-08-07 | 2003-02-13 | Otter James William | Ethylene terpolymer adhesive for condensing furnace heat exchanger laminate material |
JP2004292793A (ja) * | 2003-03-13 | 2004-10-21 | Jsr Corp | フィルムまたはシートの処理方法 |
US7097737B2 (en) * | 2003-04-16 | 2006-08-29 | Weyerhaeuser Company | Method of making a modified unbleached pulp for lyocell products |
US6790527B1 (en) | 2003-04-16 | 2004-09-14 | Weyerhaeuser Company | Lyocell fiber from unbleached pulp |
US6833187B2 (en) | 2003-04-16 | 2004-12-21 | Weyerhaeuser Company | Unbleached pulp for lyocell products |
JP5276256B2 (ja) * | 2006-04-07 | 2013-08-28 | フタムラ化学株式会社 | ガスバリア性付与ポリエステルフィルムの製造方法 |
CN101245494B (zh) * | 2007-02-15 | 2010-05-19 | 宜宾海丝特纤维有限责任公司 | 异型扁平人造丝纺丝机 |
DE102011122560B4 (de) * | 2011-12-29 | 2022-09-08 | Technikum Laubholz GmbH (TLH) | Textilverstärkter Formkörper, ein Verfahren zu dessen Herstellung sowie seine Verwendung |
CN105200589A (zh) * | 2014-06-27 | 2015-12-30 | 如皋市利富织造有限公司 | 一种丝线的手工制作工艺 |
US9610379B2 (en) | 2015-01-23 | 2017-04-04 | Fpinnovations | Absorbent fibres produced from low-substituted carboxymethyl cellulose and the process thereof |
EP3231899A1 (en) | 2016-04-14 | 2017-10-18 | TreeToTextile AB | A method and system for the production of a spinning dope composition |
CN114619689B (zh) * | 2020-12-17 | 2023-11-03 | 赣南师范大学 | 连续制备再生天然高分子膜的方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6136082B2 (ja) * | 1979-12-10 | 1986-08-16 | Mitsubishi Rayon Co | |
JPS62240328A (ja) * | 1986-04-10 | 1987-10-21 | Asahi Chem Ind Co Ltd | 分子内水素結合の発達したセルロ−スおよびその製造法 |
JPS62240329A (ja) * | 1986-04-10 | 1987-10-21 | Asahi Chem Ind Co Ltd | 水膨潤性の高いセルロ−スおよびその製造法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1881740A (en) * | 1926-06-03 | 1932-10-11 | Lilienfeld Leon | Artificial material and process for making same |
US2169207A (en) * | 1931-03-31 | 1939-08-08 | Abel Paul | Manufacture of cellulose xanthate derivatives and artificial materials therefrom |
JPS6136082A (ja) * | 1984-07-27 | 1986-02-20 | ヤマハ発動機株式会社 | 原動機付自転車の排気装置 |
JP3096004B2 (ja) * | 1996-07-25 | 2000-10-10 | 古河機械金属株式会社 | クレーンとローダウインチのリモート操作装置 |
-
1991
- 1991-11-19 JP JP30321491A patent/JP3190979B2/ja not_active Expired - Lifetime
-
1992
- 1992-11-19 DE DE4293958A patent/DE4293958B4/de not_active Expired - Lifetime
- 1992-11-19 DE DE4293958T patent/DE4293958T1/de not_active Expired - Lifetime
- 1992-11-19 GB GB9314855A patent/GB2269559B/en not_active Expired - Lifetime
- 1992-11-19 CA CA002100756A patent/CA2100756C/en not_active Expired - Lifetime
- 1992-11-19 WO PCT/JP1992/001514 patent/WO1993010171A1/ja active Application Filing
- 1992-11-19 US US08/087,798 patent/US5401447A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6136082B2 (ja) * | 1979-12-10 | 1986-08-16 | Mitsubishi Rayon Co | |
JPS62240328A (ja) * | 1986-04-10 | 1987-10-21 | Asahi Chem Ind Co Ltd | 分子内水素結合の発達したセルロ−スおよびその製造法 |
JPS62240329A (ja) * | 1986-04-10 | 1987-10-21 | Asahi Chem Ind Co Ltd | 水膨潤性の高いセルロ−スおよびその製造法 |
Also Published As
Publication number | Publication date |
---|---|
CA2100756A1 (en) | 1993-05-20 |
JPH05140333A (ja) | 1993-06-08 |
US5401447A (en) | 1995-03-28 |
JP3190979B2 (ja) | 2001-07-23 |
DE4293958T1 (de) | 1997-08-21 |
GB2269559B (en) | 1996-03-06 |
GB9314855D0 (en) | 1993-12-01 |
DE4293958B4 (de) | 2005-03-17 |
GB2269559A (en) | 1994-02-16 |
CA2100756C (en) | 1996-06-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1993010171A1 (fr) | Procede de production de moulages en cellulose | |
JP6427183B2 (ja) | 再生セルロースフィルム、機能フィルム及びその製造方法 | |
Zheng et al. | Preparation and characterization of chitosan/poly (vinyl alcohol) blend fibers | |
Du et al. | Cellulose/chitosan hybrid nanofibers from electrospinning of their ester derivatives | |
GB2284421A (en) | Treatment of cellulose | |
JP2569352B2 (ja) | 高強度水溶性ポリビニルアルコール系繊維およびその製造法 | |
Chin et al. | Bioinspired crosslinked nanocomposites of polyvinyl alcohol-reinforced cellulose nanocrystals extracted from rice straw with ethanedioic acid | |
GB1589178A (en) | Dry spinning of cellulose | |
JP2011127267A (ja) | セルロース多孔体ゲル | |
JP2002235236A (ja) | ポリビニルアルコール系水溶性繊維 | |
Yang et al. | Structure of regenerated cellulose films from cellulose/aqueous NaOH solution as a function of coagulation conditions | |
JP7303738B2 (ja) | ポリビニルアルコール系繊維および繊維構造体 | |
JP3723683B2 (ja) | 生分解性成形体 | |
JPH01188539A (ja) | 新規なセルロース多孔膜およびその製造法 | |
JPH0482918A (ja) | 多糖類繊維及びその製造法 | |
JP7336282B2 (ja) | ポリビニルアルコール系繊維およびその製造方法 | |
WO2022138241A1 (ja) | ポリビニルアルコール系繊維、繊維構造体およびその製造方法 | |
JP2001192930A (ja) | ポリビニルアルコール系バインダー繊維及びその製造方法 | |
JP2003064535A (ja) | ポリビニルアルコール系の活性炭布又は活性炭シート及びそれらの製造法 | |
JPH0473212A (ja) | 高強度・高弾性率ポリエステル繊維の製造方法 | |
JPH05140332A (ja) | セルロース成型品の製造法 | |
JPH08158147A (ja) | セルロース繊維の製造方法 | |
Chin et al. | Research Article Bioinspired Crosslinked Nanocomposites of Polyvinyl Alcohol-Reinforced Cellulose Nanocrystals Extracted from Rice Straw with Ethanedioic Acid | |
Shanks | Processing cellulose for cellulose fiber and matrix composites | |
JPS6136082B2 (ja) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA DE GB US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 9314855.9 Country of ref document: GB Ref document number: 2100756 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 08087798 Country of ref document: US |
|
RET | De translation (de og part 6b) |
Ref document number: 4293958 Country of ref document: DE Date of ref document: 19970821 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 4293958 Country of ref document: DE |