US2607955A - Spinning of viscose - Google Patents
Spinning of viscose Download PDFInfo
- Publication number
- US2607955A US2607955A US193746A US19374650A US2607955A US 2607955 A US2607955 A US 2607955A US 193746 A US193746 A US 193746A US 19374650 A US19374650 A US 19374650A US 2607955 A US2607955 A US 2607955A
- Authority
- US
- United States
- Prior art keywords
- viscose
- filaments
- cellulose
- filamentary
- poises
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229920000297 Rayon Polymers 0.000 title claims description 83
- 238000009987 spinning Methods 0.000 title description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 110
- 229920002678 cellulose Polymers 0.000 claims description 54
- 239000001913 cellulose Substances 0.000 claims description 54
- 238000000034 method Methods 0.000 claims description 37
- 230000001112 coagulating effect Effects 0.000 claims description 29
- 238000004519 manufacturing process Methods 0.000 claims description 29
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 23
- 239000000835 fiber Substances 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 23
- 239000001117 sulphuric acid Substances 0.000 claims description 23
- 235000011149 sulphuric acid Nutrition 0.000 claims description 23
- 239000002964 rayon Substances 0.000 claims description 10
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 41
- 235000011121 sodium hydroxide Nutrition 0.000 description 37
- 239000003513 alkali Substances 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000002253 acid Substances 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000005070 ripening Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BWDBEAQIHAEVLV-UHFFFAOYSA-N 6-methylheptan-1-ol Chemical compound CC(C)CCCCCO BWDBEAQIHAEVLV-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 101150007919 Gper1 gene Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- -1 aliphatic alcohols Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- D01F2/08—Composition of the spinning solution or the bath
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/27—Process of spinning viscose where viscose has high degree of polymerization
Definitions
- This invention relates to the production of viscose rayon, artificial staple fibre, hair, braid and the like.
- a process for the production of viscose rayon, artificial staple fibre, 'hairfbraid and the like comprises extruding in filamentary form into a coagulating bath of low acid concentration, at room temperature, a Viscose having a viscosity of at least 400 poises and having a y-value above 60, and thereafter fixing the filamentary product by treatment in hot aqueous liquid.
- the high viscosity viscose employed may be obtained by either of two general methods. In one form of the invention there may be employed viscose produced from an alkali cellulose with a cellulose concentration of 6% to 10% and which has not been ripened (the product is referredto herein as an unripe viscose) and in another form of the invention there may be employed viscose which has a cellulose content of 10 to employed may be achieved by Xanthogenation of.
- the alkali cellulose with-a large excess of car- It is defined by Fink, Stahn cosityof 600 poises or more and the y-value is 70 2 bon disulphide, i e. more than 5 0% calculated on thee cellulose present.
- the viscose employed has a visto 80.
- the viscose employed will have a low concentration of alkali, e. g. 6% or less.
- the high viscosity viscoses are preferably spun through spinnerets having apertures consider-.. ably larger than normal, e. g. of about 0.10 to- 0.15 mm., and the coagulation baths employed are preferably sulphuric acid at a concentration
- the length of travel of the filamentary material through the bath may be,
- the filaments are completely, coagulated when they reach the end of the tube but are still highly plastic and can be easily stretched by 100% or 200% so that the winding speed may be as high as 200 or even 300 metres per minute.
- the fixing of the yarn- is effectedby treatment with hot aqueous baths, e.,g,. hot dilute acids or I saline solutions or hot water. If. the fixing operation is carried out with the yarn under tension;
- fibres vare'obtained, after cutting. which have-very low elongation, less than 7% which yield yarn of relatively low tenacity.
- the fixing is carried out with the filaments in the de-tensioned condition, either by cutting before fixing or by de-tensioning the bundle of filaments before the fixing operation, the fibres have higher elongations, from 7% to 10% or more. They are'very supple and are readily converted by methods known per se, into high quality yarns.
- the filamentary material obtained may be stretched (additionally to the stretching effected as it leaves the nozzle), e. g. by 100 to 200%.
- Yarns of varying denier, e. g. 0.5 to 4 denier, may be obtained by the process.
- EXAIWPLE I Production of the unripe viscose spinning solution greater than 800 and containing less than 2% of molecular chains having a degree of polymerisation below 200, are steeped in caustic soda lye containing 235-240 g./litre of NaOH. The sheets are pressed to expel excess lye until their weight is reduced to 280-285% of the initial alpha-cellulose content. The alkali cellulose thus obtained is shredded but not ripened. It is reacted at 28 C. with carbon disulphide, (50 parts of CS2 per 100 parts of initial alpha-cellulose) for 2 hours. The cellulose xanthate thus obtained is mixed with a small quantity of 9% caustic soda lye at 5 to 10 C. and the resulting pasty, swollen mass is dissolved in 4% caustic soda lye at to C.
- the resulting solution contains about 9.5% of cellulose and 5% of caustic soda. It has a viscosity of 900 poises and the degree of polymerisation of the cellulose contained in it is still in excess of 500. Its salt point lies between 15 and 16.
- the solution is filtered and degassed for 9 hours in a vacuum in the presence of 1 g./litre of a mixture of higher branched aliphatic alcohols as antiscumming agent. It is then ready for use.
- the viscose solution thus prepared, without any ripening, is spun in an apparatus as described in said Patent No. 2,511,699.
- the spinning bath used consists of sulphuric acid at a strength of 1 g./litre and the spinning is eiTected at ordinary room temperature.
- the spinnerets used have a diameter at least about 50% larger than is customary when spinning viscose, e. g. 0.15 mm. to yield filaments of about 1 denier, in order to increase the degree of stretching possible at the spinnerets.
- the stretch at this stage should be positive, i. e. the speed of the filaments leaving the spinnerets should be higher than the speed of the viscose passing through the spinnerets. Using a tube of about 5 mm. diameter metres per minute, or more, are easily obtained.
- the filaments are stretched by a further 150% by means of rollers as in Patent No. 2,511,699.
- the filament may be set by treatment in a bath identical with the spinning bath but heated to 75-80 C., but if this is not done it is preferable to complete the setting of the filaments by 9.1-
- the yarn obtained is washed with hot water and dried. Even without any desulphurisation or bleaching treatment the yarns obtained are remarkably white.
- the conditions being adjusted to yield a yarn of denier/100 filaments, the characteristics of the yarn are:
- the alkali cellulose is not ripened but is shredded for 2 hours with cooling, and then xanthogenated with 55 of carbon disulphide (calculated on the alpha-cellulose content, of the pulp) for 3 hours at between 22 and 30.
- a mixture of the cellulose xanthogenate and alkali is prepared containing 9% of caustic soda and 12% of cellulose and this is then slowly mixed at between 5 and 10 C. with dilute caustic soda to produce a viscose containing 6% to 7% cellulose and 5% to 6% caustic soda.
- the use of stronger caustic soda initially is desirable in order to secure the maximum solubility of the xanthogenate.
- the v-value of the product is about 80.
- the viscose thus obtained has a 'y-value of 70 and a viscosity of about 500 poises.
- a rayon of 400 deniers and containing 260 filaments is spun at 50 m./min. through a spinneret having holes of 0.10 to 0.15 mm. dipping into a bath containing 10 to 15 g./litre of sulphuric acid at 18, the length of the passage de-tensioning.
- This procedure does not afiect the wet and dry tenacity. It has the advantage that it directly de-acidifies the yarn and permits immediate and complete recovery of the carbon disulphide.
- EXANLPLE III Alkali cellulose is prepared as in Example 11, shredded for 2 hours, with cooling, ripened for 30 hours at 21 0., and xanthogenated with 60% of carbon disulphide (calculatedon the alphace1lulose).fcr 3 hours between 22 and 30 C.
- a viscose containing 12% of cellulose and 6% caustic soda is prepared, whereafter the mixture is filtered and degassed. After ripening for 18 hours at 10 C., the -value of the product is 75.
- a bundle of fibres having a total count of 5250 deniers is spun via a spinneret having 3500 holes of a diameter of 0.10 mm., into a sulphuric acid bath of concentration g./litre.
- the filaments are stretched between rollers to 148% and the filaments are then de-tensioned and fixed in water at 85-90 C.
- the filaments are cut to form artificial staple fibre and this product has the following properties:
- the bundle of filaments is passed after de-tensioning, into a second bath composed of very hot Water, for example at 90 C.
- the hot Water treatment produces strongly curled fibres.
- a viscose prepared in accordance with Example ]1 is a spun through a spinneret having slots of 0.25 x 0.05 mm. The conditions are regulated to produce flat filaments of 3 denier, which have the following properties:
- the cross-section is of very elongated form and the filaments may be cut into staple fibre.
- the staple fibre can be easily carded or combed and gives normally regular yarns. In use, it may be mixed with cotton in all proportions. It is an effective substitute for high tenacity staple fibre as previously used in the cotton and linen industry.
- the staple fibre obtained appears under the microscope as twisted fibres of the cotton type.
- Modified yarns may be obtained by including white or coloured pigments or oily substances in the spinning solutions.
- a particular advantage of the process of this invention is that a large proportion of the carbon disulphide used may be readily recovered. Carbon desulphide is regenerated in the spinning bath and remains dispersed therein. Some sinks to the bottom of the spinning bath and can be separated by decantation while the remainder can be recovered by treating the bath with a stream of gas or vapour and adsorbing, absorbing or condensing the carbon disulphide from the gas or vapour stream by any of the usual methods.
- Yarns obtained by the processof this invention have valuable commercia1 properties; for example they may be usedfortheproduction ofjcords for reinforcing pneumatic tyres.
- the prodartificial staple fibre, -hair, braid and the like which comprises extruding in filamentary form into a coagulating bath of sulphuric acid of concentration 1 to 15 g./litre at room temperature,
- a process for the production of viscose rayon, artificial staple fibre, hair, braid and the like which comprises extruding ina filamentary form into a coagulating bath of sulphuric acid of concentration lto 15-g./litre at room temperature, a viscose containing 6% to 15% of cellulose, not over 6% of sodium hydroxide, and prepared from unripened alkali cellulose by xanthogenation with more than 50% carbon disulphide, having a viscosity of at least 400 poises and havin a 'y-value above 60, and thereafter fixing the filamentary product by treatmentin hot aqueous liquid.
- a process for the production of viscoserayon, artificial staple fibre, hair, braid and the like which comprises extruding in filamentary form into a coagulating bath of sulphuric acid of concentration 1 to 15 g./litre at room temperature, a viscose containing 10 to 15% of cellulose, not over 6% of sodium hydroxide, and prepared from ripened alkali cellulose by xanthogenation with more than 50%. of carbon disulphide, having a viscosity of at least 400 poises and having a y-value above 60, and thereafter fixing the filamentary product by treatment inhot aqueous liquid.
- artificial staple fibre, hair, braid and the like which comprises extruding in filamentary form into a coagulating bath containinglo to 15 g. per litre of sulphuric "acid at room temperature, a viscose containing 6% to 15% of cellulose, not over 6% of sodium hydroxide, and prepared from unripened alkali cellulose by xanthogenation with more than 50%carbon disulphide,having a viscosity of at least 400 poises and having a y-value above 60, and thereafter fixing the filamentary product by treatment in hot aqueous liquid.
- A'process for the'pro'duction of viscose rayon, artificial staple'fib-re, hair, braid and the like which comprises extruding in filamentary form into acoagulating bath containing to g. per litre of sulphuric acid at room temperature via spinnerets with holes of 0.10 to 0.15 mm. diameter, a viscose containing 6% to 15% of cellulose, not over 6% of sodium hydroxide, and prepared from unripened alkali cellulose by xanthogenati'on with more than carbon disulphide, having a-viscosity of at least 400 poises and having a y-value above 60, and thereafter fixing the filamentary product by treatment in hot aqueous liquid.
- a process for the production of viscose rayon, artificia1 staple fibre, hair, braidand the like which comprises extruding in filamentary form into a coagulating bath containing 10 to 15 g. per litre of sulphuric acid at room temperature via spinnerets with holes of 0.10 to 0.15 mm. diameter, a viscose containing 10 to 15% of cellulose, not over 6% of sodium hydroxide, and prepared from ripened alkali cellulose by xanthogenation with more than 50% of carbon disulphide, having a viscosity of at least 400 poises and having a v-value above 60, and thereafter fixing the filamentary product by treatment in hot aqueous liquid.
- a process for the production of Viscose rayon, artificial staple fibre, hair, braid and, the'like which comprises extruding in filamentary form into a coagulating bath containing 10 to 15 g. per litre of sulphuric acid at room temperature via spinnerets with holes of 0.10 to 0.15 mm.
- a process for the production of viscose rayon, artificial staple fibre, hair, braid and the like which comprises extruding in filamentary form into a coagulating bath containing 10 to 15g. per litre of sulphuric acid at room temperature via spinnerets with holes of 0.10 to 0.15 mm.
- a process for the production of viscose rayon, artificial staple fibre, hair, braid and the like which comprises extruding in filamentary.
- a process forthe production of viscose rayon, artificial'staple fibre, hair, braid and the like which comprises extruding in filamentary form into a coagulating bath containing 10 to 15 gper litre of sulphuric acid at room temperature via spinnerets with holes of 0.10 to 0.15 mm.
- a process for the production of-viscose rayon, artificial staple fibre, hair, braid and the like which comprises extruding in filamentary form into a coagulating bath containing 10 to 15 g. per litre of sulphuric acid at room tempera- I ture via spinnerets with holes of 0.10 to 0.15 mm.
- a process for the production of viscose rayon, artificial staple fibre, hair, braid and the like which comprises extruding in filamentary form into a coagulating bath containing 10 to 15 g. per litre of sulphuric acid at room temperature via spinnerets with holes of 0.10 to 0.15 mm.
- a process for the production of viscose rayon, artificial staple fibre, hair, braid and the like which comprises extruding in filamentary form into a coagulating bath of sulphuric acid of concentration 1 to 15 g./litre at room temperature, a viscose containing 6% to 15% of cellulose,
- a process for the production of viscose rayon, artificial staple fiber, hair, braid and the like which comprises extruding in filamentary form into a coagulating bath of sulphuric acid of concentration 1 g./litre at room temperature, a viscose containing 6% to 15% of cellulose, not over 6% of sodium hydroxide, and prepared from unripened alkali cellulose by xanthogenation with more than 50% carbon disulphide, having a viscosity of at least 400 poises and having a y-value above 60, and thereafter fixing the filamentary product by treatment in hot aqueous liquid.
- the method of spinning viscose for the manufacture of rayon and the like which comprises ejecting a solution of unripe viscose containing 6% to 15% of cellulose, not over 6% of sodium hydroxide, and having a 'y-value of at least 60 and a viscosity of at least 400 poises at a controlled rate from a spinneret having holes of from .10 mm. to .15 mm. diameter into a coagulating bath, and drawing the filaments in a straight line from said spinneret through a straight tube immersed in said bath and of a diameter such that liquid is drawn through the tube solely by the motion of the filaments.
- the method of spinning viscose for the manufacture of rayon and the like which comprises ejecting a solution of unripe viscose having a 'y-value of at least 60 and a viscosity 01 at least 400 poises, the said viscose solution containing 9.5% to 15% of cellulose and not over 6% of caustic soda, at a controlled rate from a spinneret having holes of .10 mm. to .15 mm. diameter into a coagulating bath, and drawing the filaments in a straight line from said spinneret through a straight tube immersed in said bath and of a diameter such that liquid is drawn through the tube solely by the motion of the filaments.
- the method of spinning viscose for the manufacture of rayon and the like which comprises ejecting a solution of unripe viscose having a 'y-value of at least 60 and a viscosity of at least 400 poises, the said viscose solution containing at least 9.5% of cellulose and at most 6% of caustic soda and having a degree of polymerization in excess of 500, at a controlled rate from a spinneret having holes of .10 mm. to .15 mm. diameter into a coagulating bath, and drawing the filaments in a straight line from said spinneret through a straight tube immersed in said bath and of a diameter such that liquid is drawn through the tube solely by the motion of the filaments.
- the method of spinning viscose for the manufacture of rayon and the like which comprises ejecting a solution of unripe viscose containing 6% to 15% of cellulose, not over 6% of sodium hydroxide, and having a 'y-value of at least 60 and a viscosity of at least 400 poises at a controlled rate from a spinneret having holes of .10 mm. to .15 mm. diameter into a coagulating bath, and drawing the filaments in a straight line from said spinneret through a straight tube immersed in said bath and of a diameter such that liquid is drawn through'the tube solely by the motion of the filaments, the drawing of the filaments being such as to cause a positive stretching of the filaments.
- the method of spinning viscose for the manufacture of rayon and the like which comprises ejecting a solution of unripe viscose containing 6% to 15% of cellulose, not over 6% of sodium hydroxide, and having a -value of at least 60 and a viscosity of at least 400 poises at a controlled rate from a spinneret having holes of .10 mm. to .15 mm.
- the method of spinning viscose for the manufacture of rayon and the like which comprises ejecting a solution of unripe viscose containing 6% to 15% of cellulose, not over 6% of sodium hydroxide, and having a 'y-value of at least 60 and a viscosity of at least 400 poises at a controlled rate from a spinneret having holes of .10 mm. to .15 mm.
- a coagulating bath consisting of a 1% solution of sulphuric acid, and drawing the filaments in a straight line from said spinneret through a straight tube immersed in said bath and of a diameter such that liquid is drawn through the tube solely by the motion of the filaments, the drawing of the filaments being such as to cause a positive stretching of the filaments, and stretching the filaments leaving the coagulating bath by .a further 100% to 200%.
- the method of spinning viscose for the manufacture of rayon and the like which comprises ejecting a solution of unripe viscose containing 6% to 15% of cellulose, not over 6% of sodium hydroxide, and having a 'y-value of at least 60 and a viscosity of at least 400 poises at a controlled rate from a spinneret having .10 mm. to .15 mm.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
- Materials For Medical Uses (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR993756T | 1949-08-25 | ||
FR63131T | 1952-01-15 | ||
NL757521X | 1952-12-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2607955A true US2607955A (en) | 1952-08-26 |
Family
ID=32302966
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US193746A Expired - Lifetime US2607955A (en) | 1949-08-25 | 1950-11-02 | Spinning of viscose |
US297180A Expired - Lifetime US2705184A (en) | 1949-08-25 | 1952-07-03 | Process for the production of rayon products |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US297180A Expired - Lifetime US2705184A (en) | 1949-08-25 | 1952-07-03 | Process for the production of rayon products |
Country Status (7)
Country | Link |
---|---|
US (2) | US2607955A (fr) |
BE (2) | BE516903A (fr) |
CH (2) | CH295960A (fr) |
DE (2) | DE969389C (fr) |
FR (3) | FR993756A (fr) |
GB (3) | GB685631A (fr) |
NL (2) | NL103223C (fr) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2703270A (en) * | 1951-07-31 | 1955-03-01 | Schweizerische Viscose | Production by spinning of cellulose hydrate filaments |
US2705184A (en) * | 1949-08-25 | 1955-03-29 | Textile & Chemical Res Company | Process for the production of rayon products |
US2732279A (en) * | 1951-12-07 | 1956-01-24 | Shozo tachikawa | |
US2937922A (en) * | 1954-03-24 | 1960-05-24 | Rayonier Inc | Viscose process |
US2952508A (en) * | 1953-09-16 | 1960-09-13 | Rayonier Inc | Viscose process and products produced thereby |
US2987371A (en) * | 1957-12-26 | 1961-06-06 | American Enka Corp | Manufacture of rayon |
US3154614A (en) * | 1962-06-27 | 1964-10-27 | Tachikawa Res Inst | Process for spinning a high viscosity, high gamma viscose |
US3274321A (en) * | 1961-03-28 | 1966-09-20 | Fmc Corp | Method of making clear cellulose films from green viscose |
US3324216A (en) * | 1962-05-16 | 1967-06-06 | Toyo Spinning Co Ltd | Viscose spinning process |
US3352957A (en) * | 1962-11-06 | 1967-11-14 | Chimiotex | Process for spinning cellulosic fibers |
US3875141A (en) * | 1968-02-16 | 1975-04-01 | Chimiotex | Regenerated cellulose filaments |
US20150322595A1 (en) * | 2013-01-29 | 2015-11-12 | Cordenka Gmbh & Co. Kg | High-tenacity viscose multifilament yarn with low yarn linear density |
CN111394817A (zh) * | 2020-04-15 | 2020-07-10 | 新乡化纤股份有限公司 | 一种再生纤维素纤维的新型制备工艺 |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2592355A (en) * | 1949-11-21 | 1952-04-08 | Tachikawa Shozo | Process for manufacturing macromolecular cellulose fiber |
BE529914A (fr) * | 1953-06-25 | 1900-01-01 | ||
US2914414A (en) * | 1954-03-08 | 1959-11-24 | Ohio Commw Eng Co | Shaped articles comprising regenerated cellulose |
BE539699A (fr) * | 1954-10-20 | |||
BE540588A (fr) * | 1954-11-25 | 1900-01-01 | ||
BE540586A (fr) * | 1954-11-25 | 1955-09-15 | ||
US2953425A (en) * | 1954-11-25 | 1960-09-20 | American Enka Corp | Production of shaped objects from viscose |
NL85457C (fr) * | 1954-11-25 | 1900-01-01 | ||
US2898182A (en) * | 1954-12-30 | 1959-08-04 | American Viscose Corp | Method of preparing viscose rayon |
US2895788A (en) * | 1954-12-30 | 1959-07-21 | American Viscose Corp | Method of forming all skin viscose rayon |
US2895787A (en) * | 1954-12-30 | 1959-07-21 | American Viscose Corp | Process of producing all skin rayon |
NL113790C (fr) * | 1955-06-30 | 1900-01-01 | ||
US3077375A (en) * | 1955-08-22 | 1963-02-12 | Atlas Chem Ind | Spinning of viscose |
US3031320A (en) * | 1955-08-22 | 1962-04-24 | Atlas Chem Ind | Spinning of viscose |
NL90492C (fr) * | 1955-09-03 | 1900-01-01 | ||
US2919203A (en) * | 1955-12-05 | 1959-12-29 | American Viscose Corp | Producing all skin rayon |
US3049398A (en) * | 1955-12-05 | 1962-08-14 | American Viscose Corp | Method of producing all skin rayon |
US2929730A (en) * | 1955-12-05 | 1960-03-22 | American Viscose Corp | Preparing viscose rayon |
US2926099A (en) * | 1955-12-05 | 1960-02-23 | American Viscose Corp | Preparing all skin viscose rayon |
US2932578A (en) * | 1955-12-05 | 1960-04-12 | American Viscose Corp | Method of producing all skin rayon |
DE1023186B (de) * | 1956-02-20 | 1958-01-23 | Glanzstoff Ag | Verfahren zum Herstellen von Kuenstlichen Faeden nach dem Viskosespinnverfahren |
US2920973A (en) * | 1956-04-23 | 1960-01-12 | American Viscose Corp | Preparing viscose rayon |
DE1072354B (de) * | 1956-07-25 | 1959-12-31 | Courtaulkis Limited, London | Verfahren zur Herstellung regenerierter CeIlulosefaden |
US2986446A (en) * | 1956-08-01 | 1961-05-30 | Courtaulds Ltd | Crimped regenerated cellulose fibres |
US3116352A (en) * | 1957-05-02 | 1963-12-31 | Beaunit Corp | Viscose spinning |
US3116353A (en) * | 1957-05-02 | 1963-12-31 | Beaunit Corp | Spinning viscose |
US3116354A (en) * | 1957-05-02 | 1963-12-31 | Beaunit Corp | Viscose spinning process |
US3057038A (en) * | 1957-06-05 | 1962-10-09 | Celanese Corp | Wet spun cellulose triacetate |
US2960385A (en) * | 1957-10-16 | 1960-11-15 | Du Pont | Extruding a ferrocyanide containing viscose into a nickel salt containing bath |
BE572234A (fr) * | 1957-11-29 | |||
GB993786A (en) * | 1960-10-04 | 1965-06-02 | Toho Rayon Kk | Process for the manufacture of high tenacity viscose rayon |
BE624034A (fr) * | 1962-11-14 | |||
AT507757B1 (de) * | 2008-12-23 | 2015-06-15 | Chemiefaser Lenzing Ag | Cellulosische formkörper mit nichtrundem querschnitt und deren verwendung in verbundwerkstoffen |
WO2014118082A1 (fr) | 2013-01-29 | 2014-08-07 | Continental Reifen Deutschland Gmbh | Nappe de renforcement pour objets en matériau élastomère, de préférence pour pneumatiques de véhicules, et pneumatiques de véhicule |
EP2759624A1 (fr) | 2013-01-29 | 2014-07-30 | Continental Reifen Deutschland GmbH | Position de renforcement pour objets composés de matériau élastomère, de préférence pour pneus de véhicule et pneus de véhicule |
EP2781633A1 (fr) | 2013-03-18 | 2014-09-24 | Continental Reifen Deutschland GmbH | Corde hybride constituée d'au moins deux fils multifilaments entortillés l'un avec l'autre |
EP2781367B1 (fr) | 2013-03-18 | 2016-12-14 | Continental Reifen Deutschland GmbH | Nappe de renforcement pour objets composés de matériau élastomère, de préférence pour pneus de véhicule et pneu de véhicule |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2327516A (en) * | 1939-07-22 | 1943-08-24 | Fink Heinrich | Manufacture of artificial filaments and fibers from viscose |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR518451A (fr) * | 1918-07-22 | 1921-05-26 | Glanzfaden Actiengesellschaft | Procédé de fabrication de fils artificiels très fins à l'aide de solutions de cellulose |
DE405443C (de) * | 1918-07-22 | 1924-10-31 | Glanzfaeden A G | Verfahren zur Erzeugung kuenstlicher, sehr feiner Faeden aus Zelluloseloesungen |
DE492279C (de) * | 1922-09-19 | 1930-09-18 | Benno Borzykowski | Verfahren zur Herstellung von feinen Kunstfaeden aus Viskose |
NL97400B (fr) * | 1939-03-30 | 1943-09-15 | ||
BE446669A (fr) * | 1941-08-01 | |||
BE451305A (fr) * | 1942-07-01 | |||
FR1006078A (fr) * | 1947-11-10 | 1952-04-18 | Comptoir Textiles Artificiels | Procédé et dispositif de filature de viscose |
NL92810C (fr) * | 1949-08-25 |
-
0
- NL NL92810D patent/NL92810C/xx active
- BE BE497545D patent/BE497545A/xx unknown
- NL NL103223D patent/NL103223C/xx active
- BE BE516903D patent/BE516903A/xx unknown
-
1949
- 1949-08-25 FR FR993756D patent/FR993756A/fr not_active Expired
- 1949-09-07 GB GB23191/49A patent/GB685631A/en not_active Expired
-
1950
- 1950-08-01 FR FR60194D patent/FR60194E/fr not_active Expired
- 1950-08-17 DE DEC1950A patent/DE969389C/de not_active Expired
- 1950-08-22 CH CH295960D patent/CH295960A/de unknown
- 1950-11-02 US US193746A patent/US2607955A/en not_active Expired - Lifetime
-
1952
- 1952-01-15 FR FR63131D patent/FR63131E/fr not_active Expired
- 1952-01-21 GB GB1715/52A patent/GB711642A/en not_active Expired
- 1952-07-03 US US297180A patent/US2705184A/en not_active Expired - Lifetime
-
1953
- 1953-01-13 DE DEC6947A patent/DE1047371B/de active Pending
- 1953-01-13 CH CH315104D patent/CH315104A/de unknown
- 1953-10-21 GB GB29087/53A patent/GB757521A/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2327516A (en) * | 1939-07-22 | 1943-08-24 | Fink Heinrich | Manufacture of artificial filaments and fibers from viscose |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2705184A (en) * | 1949-08-25 | 1955-03-29 | Textile & Chemical Res Company | Process for the production of rayon products |
US2703270A (en) * | 1951-07-31 | 1955-03-01 | Schweizerische Viscose | Production by spinning of cellulose hydrate filaments |
US2732279A (en) * | 1951-12-07 | 1956-01-24 | Shozo tachikawa | |
US2952508A (en) * | 1953-09-16 | 1960-09-13 | Rayonier Inc | Viscose process and products produced thereby |
US2937922A (en) * | 1954-03-24 | 1960-05-24 | Rayonier Inc | Viscose process |
US2987371A (en) * | 1957-12-26 | 1961-06-06 | American Enka Corp | Manufacture of rayon |
US3274321A (en) * | 1961-03-28 | 1966-09-20 | Fmc Corp | Method of making clear cellulose films from green viscose |
US3324216A (en) * | 1962-05-16 | 1967-06-06 | Toyo Spinning Co Ltd | Viscose spinning process |
US3154614A (en) * | 1962-06-27 | 1964-10-27 | Tachikawa Res Inst | Process for spinning a high viscosity, high gamma viscose |
US3352957A (en) * | 1962-11-06 | 1967-11-14 | Chimiotex | Process for spinning cellulosic fibers |
US3875141A (en) * | 1968-02-16 | 1975-04-01 | Chimiotex | Regenerated cellulose filaments |
US20150322595A1 (en) * | 2013-01-29 | 2015-11-12 | Cordenka Gmbh & Co. Kg | High-tenacity viscose multifilament yarn with low yarn linear density |
US9988744B2 (en) * | 2013-01-29 | 2018-06-05 | Cordenka Gmbh & Co. Kg | High-tenacity viscose multifilament yarn with low yarn linear density |
CN111394817A (zh) * | 2020-04-15 | 2020-07-10 | 新乡化纤股份有限公司 | 一种再生纤维素纤维的新型制备工艺 |
Also Published As
Publication number | Publication date |
---|---|
CH295960A (de) | 1954-01-31 |
NL92810C (fr) | |
BE497545A (fr) | |
CH315104A (de) | 1956-07-31 |
GB757521A (en) | 1956-09-19 |
GB685631A (en) | 1953-01-07 |
BE516903A (fr) | |
DE969389C (de) | 1958-05-29 |
FR60194E (fr) | 1954-09-23 |
NL103223C (fr) | |
GB711642A (en) | 1954-07-07 |
FR63131E (fr) | 1955-08-24 |
FR993756A (fr) | 1951-11-07 |
US2705184A (en) | 1955-03-29 |
DE1047371B (de) | 1958-12-24 |
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