WO1996010113B1 - Wool purification - Google Patents
Wool purificationInfo
- Publication number
- WO1996010113B1 WO1996010113B1 PCT/US1995/012227 US9512227W WO9610113B1 WO 1996010113 B1 WO1996010113 B1 WO 1996010113B1 US 9512227 W US9512227 W US 9512227W WO 9610113 B1 WO9610113 B1 WO 9610113B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wool
- polyolefin
- solvent
- fabric
- contamination
- Prior art date
Links
- 210000002268 Wool Anatomy 0.000 title claims 15
- 238000000746 purification Methods 0.000 title claims 3
- 229920000098 polyolefin Polymers 0.000 claims abstract 24
- 239000004744 fabric Substances 0.000 claims abstract 19
- 239000002904 solvent Substances 0.000 claims abstract 18
- 238000011109 contamination Methods 0.000 claims abstract 14
- 238000000034 method Methods 0.000 claims abstract 11
- 239000000835 fiber Substances 0.000 claims 11
- 235000019388 lanolin Nutrition 0.000 claims 4
- 241000282836 Camelus dromedarius Species 0.000 claims 3
- 210000004209 Hair Anatomy 0.000 claims 3
- 239000004743 Polypropylene Substances 0.000 claims 3
- 241001416177 Vicugna pacos Species 0.000 claims 3
- 210000000077 angora Anatomy 0.000 claims 3
- 210000000085 cashmere Anatomy 0.000 claims 3
- -1 polypropylene Polymers 0.000 claims 3
- 229920001155 polypropylene Polymers 0.000 claims 3
- 238000009991 scouring Methods 0.000 claims 3
- 239000000126 substance Substances 0.000 claims 3
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-Trichloroethane Chemical group CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 claims 1
- 230000002411 adverse Effects 0.000 claims 1
- 150000001298 alcohols Chemical class 0.000 claims 1
- 150000001413 amino acids Chemical class 0.000 claims 1
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 claims 1
- 239000012459 cleaning agent Substances 0.000 claims 1
- 239000000356 contaminant Substances 0.000 claims 1
- 230000004059 degradation Effects 0.000 claims 1
- 238000006731 degradation reaction Methods 0.000 claims 1
- 238000004090 dissolution Methods 0.000 claims 1
- 238000005108 dry cleaning Methods 0.000 claims 1
- 238000002955 isolation Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 229920000642 polymer Polymers 0.000 claims 1
- 238000005063 solubilization Methods 0.000 claims 1
- 238000000638 solvent extraction Methods 0.000 claims 1
Abstract
A process of producing purified fabric substantially free of polyolefin contamination comprising the steps of supplying a fabric containing polyolefin contamination, selecting a solvent which selectively solubilizes the polyolefin wherein said solvent solubilizes polyolefin at temperatures and pressures that do not degrade the fabric, treating the fabric with said selected solvent to solubilize the polyolefin and removing the solvent containing solubilized polyolefin contamination and recovering purified fabric.
Claims
1. A process of producing purified fabric substantially free of polyolefin contamination comprising the steps of: supplying a polyolefin contaminated fabric selected from the group consisting of wool, cashmere, camel hair, alpaca and angora fiber; selecting a solvent which solubilizes the polyolefin wherein said solvent solubilizes the polyolefin at temperatures and pressures that do not degrade the fabric; treating the fabric with the selected solvent to solubilize said polyolefin; and removing the solvent containing polyolefin contamination and recovering the purified fabric.
2. The process of claim 1, wherein the polyolefin contamination is a polypropylene fiber.
3. The process of claim 1, wherein the solvent selected is a chlorinated hydrocarbon solvent.
4. The process of claim 3, wherein the solvent is trichloroethane.
5. The process of claim 1, wherein the temperature is about 79.5 to 112.8 °C.
6. The process of claim 1, wherein the pressure is about 1.72-13.79 bar.
7. The process of claim 1, wherein the treatment of the fabric with solvent comprises continuous solvent extraction.
8. A process of producing purified wool fabric substantially free of polypropylene contamination comprising the steps of: supplying a wool fabric containing polypropylene contamination; - 1 3 -
treating said fabric with a chlorinated hydrocarbon solvent to solubilize the polyolefin characterized in that said treatment is conducted at a temperature and pressure that does not cause degradation to the fabric, and removing the solvent containing polyolefin contamination and recovering the purified fabric.
- 1 4 -
STATEMENT UNDER ARTICLE 19
Independent claim 1 which has been amended to incorporate the limitations of claim 2 is directed to a process of producing purified wool, cashmere, camel hair, alpaca and angora fiber, by exposing such fabrics to a solvent which selectively solubilizes any polyolefin contamination in such fabric and which does not degrade the fabric during such purification procedure.
U.S. Patent 3,619,1 16, discloses a process and plant for scouring wool using a dry cleaning agent. Nothing in said patent describes or discloses or suggests conditions for the removal of polyolefin contamination from the wool material. Rather, the wool scouring operation disclosed therein is aimed at the removal and isolation of what is known as "wool grease". In fact, in the teachings of this reference, an important objective is to actually recover the wool grease in "purified" form. Thus, in the ' 116 patent, the chlorinated solvent is washed and treated with water and lower monohydric alcohols in order to recover the wool grease in purified form. In the present invention, water is not a suitable solvent for dissolution of a polyolefine contaminant.
FR A 1 205(956 describes an alternative to the prior art method of wool scouring to remove such substances as wool grease. Nothing in this reference provides a solution to the problem of removing polyolefin contamination in wool, nor suggests that the selective solubilization of polyolefine, from the wool, can be accomplished. In addition, this reference fails to teach or
suggest that wool can be purified free of a polyolefin, by a chemical method, without adversely effecting the wool fiber itself.
JP A 62 110 970 discloses the use of a solvent at elevated temperature for removing polyolefin fiber from silk-containing yarn, polymer consisting of amino acids, with glycene and aniline as the main components. There is no disclosure or suggestion of treating the natural fibers of wool, cashmere, camel hair, alpaca and angora fiber. Moreover, the fiber characteristics of silk are such that it is known as a strong and durable fiber. Accordingly, while contaminated silk fiber may lend itself to a chemical purification procedure for removing polyolefin contamination, the problem of polyolefin contamination in natural fibers such as wool remained pervasive and unsolved until the advent of the present invention.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE69524441T DE69524441T2 (en) | 1994-09-26 | 1995-09-22 | WOOL CLEANING |
| AU36410/95A AU688599B2 (en) | 1994-09-26 | 1995-09-22 | Wool purification |
| JP8511936A JPH10506690A (en) | 1994-09-26 | 1995-09-22 | Refining wool |
| NZ293860A NZ293860A (en) | 1994-09-26 | 1995-09-22 | Removing polyolefin contamination from wool and similar fabrics by using solvent at temperatures and pressures which do not degrade the fabric |
| EP95933936A EP0783610B1 (en) | 1994-09-26 | 1995-09-22 | Wool purification |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/312,135 US5486211A (en) | 1994-09-26 | 1994-09-26 | Wool purification |
| US08/312,135 | 1994-09-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1996010113A1 WO1996010113A1 (en) | 1996-04-04 |
| WO1996010113B1 true WO1996010113B1 (en) | 1996-05-30 |
Family
ID=23210035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1995/012227 WO1996010113A1 (en) | 1994-09-26 | 1995-09-22 | Wool purification |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5486211A (en) |
| EP (1) | EP0783610B1 (en) |
| JP (1) | JPH10506690A (en) |
| AU (1) | AU688599B2 (en) |
| DE (1) | DE69524441T2 (en) |
| ES (1) | ES2169155T3 (en) |
| NZ (1) | NZ293860A (en) |
| TR (1) | TR199501171A2 (en) |
| WO (1) | WO1996010113A1 (en) |
| ZA (1) | ZA958026B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPP537198A0 (en) * | 1998-08-21 | 1998-09-10 | Polygon Pty Ltd As Trustee For Polygon Unit Trust | A system for treating materials for separation |
| US20070109795A1 (en) * | 2005-11-15 | 2007-05-17 | Gabrius Algimantas J | Thermal dissipation system |
| ITUB20155104A1 (en) * | 2015-10-28 | 2017-04-28 | Filatura Di Trivero S P A | PROCEDURE FOR THE MANUFACTURE OF A YARN BASED ON A NATURAL FIBER AND A FABRIC MADE OF SUCH YARN |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2176705A (en) * | 1939-10-17 | Method and apparatus fob continu | ||
| US1358163A (en) * | 1920-11-09 | Process for removing fat prom raw wool or analogous materials by the | ||
| US1035815A (en) * | 1908-10-01 | 1912-08-13 | Julius Stockhausen | Process of removing fat and impurities from vegetable and animal materials. |
| US1117194A (en) * | 1914-07-17 | 1914-11-17 | Franz Koch | Method for the purification of raw wool. |
| US1780885A (en) * | 1926-06-14 | 1930-11-04 | Gen Aniline Works Inc | Process of degreasing textile materials |
| DE680042C (en) * | 1935-11-23 | 1939-08-21 | I G Farbenindustrie Akt Ges | Process for cleaning raw wool |
| US2717901A (en) * | 1951-01-31 | 1955-09-13 | Pacific Mills | Process for degreasing wool and the recovery of wool grease |
| GB825402A (en) * | 1957-04-23 | 1959-12-16 | Ici Ltd | Treatment of wool |
| GB1073659A (en) * | 1965-06-24 | 1967-06-28 | Ici Ltd | Treatment of textiles |
| US3619116A (en) * | 1969-04-02 | 1971-11-09 | Thomas Burnley & Sons Ltd | Method for scouring wool |
| GB1433378A (en) * | 1972-08-18 | 1976-04-28 | Wool Res Organisation | Wool scouring |
| US4128398A (en) * | 1974-03-18 | 1978-12-05 | Diamond Shamrock Corporation | Processing aid for use in worsted and woolen processes |
| AU515802B2 (en) * | 1976-12-23 | 1981-04-30 | Commonwealth Scientific And Industrial Research Organization | Reuse of wool scouring liquors |
| NZ188550A (en) * | 1977-10-10 | 1981-01-23 | Unisearch Ltd | Separation of wool wax from wool grease |
| US4288377A (en) * | 1980-06-27 | 1981-09-08 | Arutjunian Norair S | Process for purification of wool grease |
| JPS62110970A (en) * | 1985-11-05 | 1987-05-22 | シナノケンシ株式会社 | Removal of fibrous polyolefin comprising yarn or cloth containing silk fiber |
| US4859332A (en) * | 1986-11-26 | 1989-08-22 | Johnson Willard L | Filter leaf cleaning jet apparatus |
| US5196132A (en) * | 1989-03-03 | 1993-03-23 | Fabritec International Corporation | Unit-dose drycleaning product |
-
1994
- 1994-09-26 US US08/312,135 patent/US5486211A/en not_active Expired - Lifetime
-
1995
- 1995-09-22 AU AU36410/95A patent/AU688599B2/en not_active Ceased
- 1995-09-22 JP JP8511936A patent/JPH10506690A/en active Pending
- 1995-09-22 ES ES95933936T patent/ES2169155T3/en not_active Expired - Lifetime
- 1995-09-22 WO PCT/US1995/012227 patent/WO1996010113A1/en active IP Right Grant
- 1995-09-22 EP EP95933936A patent/EP0783610B1/en not_active Expired - Lifetime
- 1995-09-22 ZA ZA958026A patent/ZA958026B/en unknown
- 1995-09-22 DE DE69524441T patent/DE69524441T2/en not_active Expired - Fee Related
- 1995-09-22 NZ NZ293860A patent/NZ293860A/en unknown
- 1995-09-26 TR TR95/01171A patent/TR199501171A2/en unknown
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