US2590402A - Lightweight polymethylene terephthalate fabric produced by alkali treatment - Google Patents
Lightweight polymethylene terephthalate fabric produced by alkali treatment Download PDFInfo
- Publication number
- US2590402A US2590402A US109078A US10907849A US2590402A US 2590402 A US2590402 A US 2590402A US 109078 A US109078 A US 109078A US 10907849 A US10907849 A US 10907849A US 2590402 A US2590402 A US 2590402A
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- fabric
- lightweight
- weight
- treatment
- fabrics
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- 239000004744 fabric Substances 0.000 title claims description 47
- -1 polymethylene terephthalate Polymers 0.000 title claims description 13
- 238000011282 treatment Methods 0.000 title description 19
- 239000003513 alkali Substances 0.000 title description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 34
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 13
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 235000011118 potassium hydroxide Nutrition 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229920000728 polyester Polymers 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 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 2
- 238000009835 boiling Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- 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
- Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
- Y10S8/04—Polyester fibers
Definitions
- This invention relates to improvements in improving the handle of textile materials composed of these polyesters and also with the production of light weight fabrics from these polyesters.
- An object of the present invention is to provide a process for improving the handle of textile materials composed of highly polymerised polymethylene terephthalate.
- a further object is to produce light weight fabrics composed of the said polyesters.
- a still further object is the production of very thin fabrics suitable, for example, for use in electrical insulation.
- these objects are accomplished by treating fabrics composed of highly polymerised polymethylene terephthalate having 2 to inclusive carbon atoms in the polymethylene chain with an aqueous solution of caustic soda or caustic potash.
- EXAMPLE 1 Small test pieces of fabric, woven from 45 denier polymeric ethylene terephthalate yarn, were immersed in a vessel containing boiling aqueous caustic soda. The solution contained 4% by weight of caustic soda and the fabric was treated for periods of 1 and 1 hours. The thickness of the fabric before and after treatment was tested on a dial type thickness guage and the breaking load of the yarns was determined on a pendulum type single thread tester. Table 1 gives the average of a number of results obtained.
- Fig. 1 is a graph in t l which the percent loss in, weight of the fabric is plotted against the breaking load in gms. and in Fig. 2 the percent loss inw'eight is plotted against the thickness of the fabric in The vertical axis in each case represents the percent loss in weight.
- g e V H H 'It will be observed thatthe thickness of the fabric and the breaking load are, within the limits of accuracy of the testinversely proportional to the loss in weight of the fabric.
- caustic soda solution by weight caustic soda solution at 91 C, on a winch machine, for varying periods of time.
- Table 2 shows the average of a number of results obtained.
- Fig. 3 is a graph showing the relationship between hours of treatment and. percent loss in weight
- Fig. 4 is a graph showing the relationship between hours of treatment and the thickness of the fabric in mms. In each case the horizontal axis represents the hours of treatment.
- the polyester is not degraded by the alkaline solution but is gradually removed from the surface of the filament. In this respect we believe these polyester fibres to be unique among textile fibres.
- the examples show that the strength of the fabric is reduced proportionately to the amount of polyester removed from the surface of the constituent yarns.
- Treatment in a'solution of the alkali metal hydroxide may take place under atmospheric pressure using for example, concentrations between 4 and 20% by weight of sodium or potassium hydroxide in the solution. It is preferred that the temperature should be at least 60 so that the process takes place reasonably quickly.
- the fabric or other material may be treated under pressure, e. g. in a pressure kier boiler. Under these conditions lower concentrations of the alkali. metal hydroxide may be used.
- Caustic soda is the preferred reagent for use in the process of this invention because of its cheapness and the fact that it is already used extensively in the textile trade. It will be appreciated that the weaker the concentration of alkali the greater the time required to reduce the thickness of the fabric.
- the fabric may 'be treated by any of the methods commonly used in the art for the liquid treatment of fabrics, e. g. by using a jig or winch. As with allsuch treatments it is essential that there should be. vsuflicient liquid available to permeate the whole fabric uniformly and achieve the desired effect.
- Fine fabrics having thicknesses of the order of 0.025 mms. are of importance for use in the insulation of electrical apparatus. Such fabrics may be prepared without difficulty using the process of this invention. If desired, the fabrics so produced may be calendered to reduce the thickness still further.
- a process for producing improved light weight fabrics comprising immersing a fabric composed of a highly polymerised polymethylene terephthalate having 2 to 10 inclusive carbon atoms in the polymethylene chain with an aqueous solution of an alkali selected from the group consisting of caustic soda and caustic potash whereby the weight of the fabric is uniformly reduced, said fabric being immersed in said aqueous solution for a length of time such that a thin, lightweight fabric is obtained.
- a process for the production of lightweight fabrics which comprises immersing a fabric composed of a highly polymerised polymethylene terephthalate having 2 to 10 inclusive carbon atoms in the polymethylene chain, in an aqueous solution of an alkali selected from the group consisting of caustic soda and caustic potash, said aqueous solution being at a temperature greater than 60 0., whereby the weight of the fabric is uniformly reduced, the fabric being immersed in said aqueous solution for a time such that a thin, lightweight fabric is obtained.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
Description
March 25, 1952- D'A. H LIGHTWEIGHT POLYMETHYLENE TEREPHTHALATE FABRIC PRODUCED ALKALI TREATMENT Filed Aug. 8; 1949 LOSSCAW WEIGHT FIG. I.
% LOSS IN WEIGHT 0 a .HOURS OF TREATMENT FIG. 3.
.HALL Iii-A1. 2,590,402
0.05 0.075 O.l. THICKNESS 0F FARR/6 //v MM 0 2 4 e a lo HOURS OF TREATMENT FIG. 4.
, Inventors JOHN D'ARCY HENRY HALL BERTRAM'PUSEY RIDGE 5- JOHN R'E'x WHI'NFIELD Atrorneys' Patented Mar. 25, 1952 UNITED STATES PATENT OFFICE LIGHTWEIGHT POLYMETHYLENE TEREPH- THALATE FABRIC PRODUCED BY ALKALI TREATMENT John D'Arcy Henry Hall, Welwyn Garden City; Bertram Pusey Ridge, Potters Bar, and John Rex Whinfield, Hampstead, London, England, assigno'rs to Imperial Chemical lndustries Limited, a corporation of Great Britain Application August 8, 1949, Serial No. 109,078 In Great Britain August 13, 1948 .5 Claims. (Cl. 8 115.5')
v This invention relates to improvements in improving the handle of textile materials composed of these polyesters and also with the production of light weight fabrics from these polyesters.
An object of the present invention is to provide a process for improving the handle of textile materials composed of highly polymerised polymethylene terephthalate. A further object is to produce light weight fabrics composed of the said polyesters. A still further object is the production of very thin fabrics suitable, for example, for use in electrical insulation.
According to the present invention these objects are accomplished by treating fabrics composed of highly polymerised polymethylene terephthalate having 2 to inclusive carbon atoms in the polymethylene chain with an aqueous solution of caustic soda or caustic potash.
We have now found that when fabrics composed of highly polymerised polymethylene terephthalate are treated with a solution of sodium or potassium hydroxide the fabrics undergo a reduction in weight which bears a relation to the time of treatment with the solution. This reduction is uniform throughout the material.
The following examples illustrate but do not limit the scope of our invention.
EXAMPLE 1 Small test pieces of fabric, woven from 45 denier polymeric ethylene terephthalate yarn, were immersed in a vessel containing boiling aqueous caustic soda. The solution contained 4% by weight of caustic soda and the fabric was treated for periods of 1 and 1 hours. The thickness of the fabric before and after treatment was tested on a dial type thickness guage and the breaking load of the yarns was determined on a pendulum type single thread tester. Table 1 gives the average of a number of results obtained.
Table 1 hm boiling After boilin fifig in 4% NaOH in 4% NaOH for 1 hour for 1% hours Percent loss in wcight 19 60 Thickness in mms 0. 1 0. 075 0. 044 Breaking load in gins.
(warp yarns) 309 249 103 In the attached drawings Fig. 1 is a graph in t l which the percent loss in, weight of the fabric is plotted against the breaking load in gms. and in Fig. 2 the percent loss inw'eight is plotted against the thickness of the fabric in The vertical axis in each case represents the percent loss in weight. g e V H H 'It will be observed thatthe thickness of the fabric and the breaking load are, within the limits of accuracy of the testinversely proportional to the loss in weight of the fabric.
EXAMPLE 2 A locknit fabric made up of denier polymeric ethylene terephthalate yarn was treated in a 4.6
by weight caustic soda solution at 91 C, on a winch machine, for varying periods of time.
Table 2 shows the average of a number of results obtained.
Table 2 Hours of Treatment 0 2% I 4 5 9% Percent Loss in Weight 0 17 30 64 Thicknessinmms 0.3 0.25 0.22 0.14
In the attached drawing Fig. 3 is a graph showing the relationship between hours of treatment and. percent loss in weight and Fig. 4 is a graph showing the relationship between hours of treatment and the thickness of the fabric in mms. In each case the horizontal axis represents the hours of treatment.
From these graphs it is apparent that the percent loss in weight is directly proportional to the time of treatment and that the thickness of the fabric is inversely proportional to the time of treatment. Thus the reduction of thickness is proportional to the time of treatment.
The polyester is not degraded by the alkaline solution but is gradually removed from the surface of the filament. In this respect we believe these polyester fibres to be unique among textile fibres. The examples show that the strength of the fabric is reduced proportionately to the amount of polyester removed from the surface of the constituent yarns.
Treatment in a'solution of the alkali metal hydroxide may take place under atmospheric pressure using for example, concentrations between 4 and 20% by weight of sodium or potassium hydroxide in the solution. It is preferred that the temperature should be at least 60 so that the process takes place reasonably quickly. If desired, the fabric or other material may be treated under pressure, e. g. in a pressure kier boiler. Under these conditions lower concentrations of the alkali. metal hydroxide may be used. By a series of simple tests it is possible to ascertain the conditions required to reduce the thickness of the material as desired, for example by preparing graphs of the type i1- lustrated in Fig. 4 wherein time of treatment is plotted against the thickness of the fabric. Caustic soda is the preferred reagent for use in the process of this invention because of its cheapness and the fact that it is already used extensively in the textile trade. It will be appreciated that the weaker the concentration of alkali the greater the time required to reduce the thickness of the fabric.
The fabric may 'be treated by any of the methods commonly used in the art for the liquid treatment of fabrics, e. g. by using a jig or winch. As with allsuch treatments it is essential that there should be. vsuflicient liquid available to permeate the whole fabric uniformly and achieve the desired effect.
- .Fabrics composed of the specified polyesters after treatment according to this invention have greatly improved handle and softness. Fine fabrics soproduced closely resemble silk in handle and other properties.
It is well knownin the art that the weaving or knitting of fine fabrics is more difiicult and expensive than the production of coarser fabrics because of thelower rate of working and the larger number of breakages which occur when using the fine yarns. The process of this invention provides a method of producing fine fabrics which is free fromthe disadvantages of the prior art. I I
Fine fabrics having thicknesses of the order of 0.025 mms. are of importance for use in the insulation of electrical apparatus. Such fabrics may be prepared without difficulty using the process of this invention. If desired, the fabrics so produced may be calendered to reduce the thickness still further.
We claim:
1. A process for producing improved light weight fabrics comprising immersing a fabric composed of a highly polymerised polymethylene terephthalate having 2 to 10 inclusive carbon atoms in the polymethylene chain with an aqueous solution of an alkali selected from the group consisting of caustic soda and caustic potash whereby the weight of the fabric is uniformly reduced, said fabric being immersed in said aqueous solution for a length of time such that a thin, lightweight fabric is obtained.
2. The process of claim 1 wherein the immersion takes place at atmospheric pressure and at a temperature greater than C.
3. The process of claim 1 wherein the immersion takes place at superatmospheric pressures.
4. A process for the production of lightweight fabrics which comprises immersing a fabric composed of a highly polymerised polymethylene terephthalate having 2 to 10 inclusive carbon atoms in the polymethylene chain, in an aqueous solution of an alkali selected from the group consisting of caustic soda and caustic potash, said aqueous solution being at a temperature greater than 60 0., whereby the weight of the fabric is uniformly reduced, the fabric being immersed in said aqueous solution for a time such that a thin, lightweight fabric is obtained.
5. The process of claim 4 wherein said fabric is composed of polymeric ethylene terephthalate.
JOHN DARCY HENRY HALL. BERTRAM PUSEY RIDGE.
JOHN REX WHINFIELD.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS OTHER REFERENCES Chemical Abstracts, 1942, volume 36, page 21- 8 /Teryl. (Copy in Patent Oflice Library.)
Claims (1)
1. A PROCESS FOR PRODUCING IMPROVED LIGHT WEIGHT FABRIC COMPRISING IMMERSING A FABRIC COMPOSED OF A HIGHLY POLYMERISED POLYMETHYLENE TEREPHTHALATE HAVING 2 TO 10 INCLUSIVE CARBON ATOMS IN THE POLYMETHYLENE CHAIN WITH AN AQUEOUS SOLUTION OF AN ALKALI SELECTED FROM THE GROUP CONSISTING OF CAUSTIC SODA AND CAUSTIC POTASH WHEREBY THE WEIGHT OF THE FABRIC IS UNIFORMLY REDUCED, SAID FABRIC BEING IMMERSED IN SAID AQUEOUS SOLUTION FOR A LENGTH OF TIME SUCH THAT A THIN, LIGHTWEIGHT FABRIC IS OBTAINED
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB21392/48A GB652948A (en) | 1948-08-13 | 1948-08-13 | Improvements in textile materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2590402A true US2590402A (en) | 1952-03-25 |
Family
ID=10162150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US109078A Expired - Lifetime US2590402A (en) | 1948-08-13 | 1949-08-08 | Lightweight polymethylene terephthalate fabric produced by alkali treatment |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2590402A (en) |
| FR (1) | FR992022A (en) |
| GB (1) | GB652948A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2926414A (en) * | 1954-04-15 | 1960-03-01 | Heberlein Patent Corp | Production of mechanical effects on light-weight fabrics |
| US2968538A (en) * | 1956-11-15 | 1961-01-17 | Du Pont | Delustering of film |
| US2989797A (en) * | 1955-11-30 | 1961-06-27 | Hoechst Ag | Process for the manufacture of staple yarns by filament decomposition |
| US3110617A (en) * | 1960-05-20 | 1963-11-12 | Du Pont | Textile |
| US3135577A (en) * | 1959-12-22 | 1964-06-02 | Ici Ltd | Process for improving the handle of polyethylene terephthalate fabrics with an alkali metal hydroxide and specific quaternary ammonium salts |
| US3928528A (en) * | 1970-05-27 | 1975-12-23 | Mitsubishi Rayon Co | Process for producing acrylic fibers having excellent pilling resistance |
| US3929946A (en) * | 1970-05-15 | 1975-12-30 | Mitsubishi Rayon Co | Process for producing hygroscopic acrylic fibers |
| US4113430A (en) * | 1976-10-04 | 1978-09-12 | Milliken Research Corporation | Method for modifying fibers of a fabric and the products so produced |
| US4113432A (en) * | 1977-05-23 | 1978-09-12 | Milliken Research Corporation | Method for modifying fibers of a fabric and the products so produced |
| US4803256A (en) * | 1988-02-01 | 1989-02-07 | Dow Corning Corporation | Method of altering the surface of a solid synthetic polymer |
| US4808188A (en) * | 1987-09-16 | 1989-02-28 | Ledford W Troy | Polyester fibers, yarns and fabrics with enhanced hydrophilicity and method of producing same with borohydride anions and lithium cations |
| US4842792A (en) * | 1988-02-16 | 1989-06-27 | Eastman Kodak Company | Drafting process for preparing a modified polyester fiber |
| US4996107A (en) * | 1988-02-16 | 1991-02-26 | Eastman Kodak Company | Ink reservoir containing modified polyester fibers |
| US5124205A (en) * | 1988-02-16 | 1992-06-23 | Eastman Kodak Company | Ink reservoir containing modified polyester fibers |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2781242A (en) * | 1954-02-05 | 1957-02-12 | Du Pont | Process of improving the hand of polyethylene terephthalate fabric by heat shrinking and hydrolyzing the fabric |
| BE545417A (en) * | 1955-02-21 | |||
| BE563152A (en) * | 1956-12-12 | |||
| DE1133075B (en) * | 1956-12-14 | 1962-07-12 | Onderzoekings Inst Res | Process for improving the carding and crimping of artificial fibers and / or the winding and twisting of endless artificial threads made of polyesters |
| DE2641608C3 (en) * | 1976-09-16 | 1981-06-25 | Öffentliche Prüfstelle und Textilinstitut für Vertragsforschung e.V., 4150 Krefeld | Process for dyeing textile materials with upstream pre-cleaning |
| DE2727112C3 (en) * | 1977-06-16 | 1981-06-04 | Öffentliche Prüfstelle und Textilinstitut für Vertragsforschung e.V., 4150 Krefeld | Process for pre-cleaning and dyeing textile materials |
| JP3076372B2 (en) * | 1995-02-28 | 2000-08-14 | 帝人株式会社 | Polyester filament yarn, method for producing the same, woven / knitted material and method for producing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1665230A (en) * | 1926-01-19 | 1928-04-10 | Albert T Otto & Sons | Lace web and process of making the same |
| US1667892A (en) * | 1924-07-29 | 1928-05-01 | Heberlein Patent Corp | Figured fabric and method of producing same |
| US1688798A (en) * | 1925-12-05 | 1928-10-23 | Heberlein & Co Ag | Fabric making |
-
1948
- 1948-08-13 GB GB21392/48A patent/GB652948A/en not_active Expired
-
1949
- 1949-08-08 US US109078A patent/US2590402A/en not_active Expired - Lifetime
- 1949-08-08 FR FR992022D patent/FR992022A/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1667892A (en) * | 1924-07-29 | 1928-05-01 | Heberlein Patent Corp | Figured fabric and method of producing same |
| US1688798A (en) * | 1925-12-05 | 1928-10-23 | Heberlein & Co Ag | Fabric making |
| US1665230A (en) * | 1926-01-19 | 1928-04-10 | Albert T Otto & Sons | Lace web and process of making the same |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2926414A (en) * | 1954-04-15 | 1960-03-01 | Heberlein Patent Corp | Production of mechanical effects on light-weight fabrics |
| US2989797A (en) * | 1955-11-30 | 1961-06-27 | Hoechst Ag | Process for the manufacture of staple yarns by filament decomposition |
| US2968538A (en) * | 1956-11-15 | 1961-01-17 | Du Pont | Delustering of film |
| US3135577A (en) * | 1959-12-22 | 1964-06-02 | Ici Ltd | Process for improving the handle of polyethylene terephthalate fabrics with an alkali metal hydroxide and specific quaternary ammonium salts |
| US3110617A (en) * | 1960-05-20 | 1963-11-12 | Du Pont | Textile |
| US3929946A (en) * | 1970-05-15 | 1975-12-30 | Mitsubishi Rayon Co | Process for producing hygroscopic acrylic fibers |
| US3928528A (en) * | 1970-05-27 | 1975-12-23 | Mitsubishi Rayon Co | Process for producing acrylic fibers having excellent pilling resistance |
| US4113430A (en) * | 1976-10-04 | 1978-09-12 | Milliken Research Corporation | Method for modifying fibers of a fabric and the products so produced |
| US4113432A (en) * | 1977-05-23 | 1978-09-12 | Milliken Research Corporation | Method for modifying fibers of a fabric and the products so produced |
| US4808188A (en) * | 1987-09-16 | 1989-02-28 | Ledford W Troy | Polyester fibers, yarns and fabrics with enhanced hydrophilicity and method of producing same with borohydride anions and lithium cations |
| US4803256A (en) * | 1988-02-01 | 1989-02-07 | Dow Corning Corporation | Method of altering the surface of a solid synthetic polymer |
| US4842792A (en) * | 1988-02-16 | 1989-06-27 | Eastman Kodak Company | Drafting process for preparing a modified polyester fiber |
| US4996107A (en) * | 1988-02-16 | 1991-02-26 | Eastman Kodak Company | Ink reservoir containing modified polyester fibers |
| US5124205A (en) * | 1988-02-16 | 1992-06-23 | Eastman Kodak Company | Ink reservoir containing modified polyester fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| FR992022A (en) | 1951-10-12 |
| GB652948A (en) | 1951-05-02 |
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