EP0344250A1 - Enzymatic treatment of wool - Google Patents
Enzymatic treatment of woolInfo
- Publication number
- EP0344250A1 EP0344250A1 EP88910009A EP88910009A EP0344250A1 EP 0344250 A1 EP0344250 A1 EP 0344250A1 EP 88910009 A EP88910009 A EP 88910009A EP 88910009 A EP88910009 A EP 88910009A EP 0344250 A1 EP0344250 A1 EP 0344250A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wool
- hair
- treated
- shrinkage
- protease
- 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.)
- Granted
Links
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
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
-
- 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
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
- D06M16/003—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic with enzymes or microorganisms
Definitions
- protease any protein-splitting enzyme.
- Suitable prote ⁇ ases are enzymes recovered from bacteria, for example esperase, pronase E, protease P, subtilysin, thermolysin, as well as enzymes from animal or plant origin, for example trypsin, pepsin, pancreatin or bromelain. Mixtures of various enzymes can also be used. These proteases are avail ⁇ able commercially.
- Preferred proteases for the process according to the invention are the animal and vegetable enzymes, especially bromelain.
- the effectiveness of the enzyme employed can be increased by adding specific activators such as cystein, dithioerythrol, dithiothreitol or mercaptoethanol. Further additives, such as salts which are known for stabilising enzymes, can also be used, e.g. calcium or zinc chloride.
- the protease is conveniently used in a quantity of 0.1 to 5 , calculated on the dry weight of the wool.
- the protease When applied by means of impregnation, the protease is used in a quantity of 0.1 to 2 X, corresponding to an enzyme activity of 400 to 1500 CDU/mg. Preferably a quantity of 0.5 to 1 % is used.
- the protease When applied from a long bath, the protease is used in a quantity of 1 to 5 %, again calculated on the dry weight of the wool.
- the wool or hair is either left to dwell and/or undergoes thermal treatment.
- the dwelling period may last from a short interim period to several hours, with partial or complete drying of the goods.
- the thermal treatment may take place for a few minutes up to several hours, optionally until the wool is dry.
- Saturated steam, super-heated steam, hot air or high frequency (HF) waves may be used for the thermal treatment.
- HF high frequency
- the wool or hair is advantageously left to dwell for between 10 and 30 minutes.
- the wool or hair is conveniently treated at about ip ⁇ -102°C between 10 minutes and 1 hour.
- the conditions for the dwelling period or the thermal treatment are chosen such that the wool obtained has the desired properties, and preferably such that the enzyme is simultaneously disactivated at the end of the treatment. Any enzyme that is still active can also be disacti ⁇ vated by known methods after treatment.
- the process according to the invention may be used both for wool and for other protein-containing animal hairs.
- the fibre material may exist in various stages of processing, e.g. in the form of flocks, tops and roving, yarn, knitted goods, woven goods, non-wovens or felts.
- the wool may be used for the process according to the invention in the raw or pre-treated state.
- the wool or hair is rinsed and dried.
- the wool or hair is chlorinated by oxidation and then treated with a protease.
- the oxidative chlorination of the wool or hair is preferably carried out using active chlorine, e.g. in the form of chlorine gas in water or in the form of sodium hypochlorite with hydrochloric acid.
- active chlorine e.g. in the form of chlorine gas in water or in the form of sodium hypochlorite with hydrochloric acid.
- This pre- treatment may be carried out by known methods.
- the wool or hair preferably undergoes mild chlorination.
- the wool or hair is preferably chlorinated with a quantity of 0,1 to 2 X of active chlorine, calculated on the dry weight of the wool or hair. This treatment advantageously takes place at a pH of 2-3 for 1 to 10 seconds.
- Chlorination is preferably effected at a temperature of between 10 and 30°C.
- the wool or hair After the pre-treatment, in order to attain the desired enzymatic effect, it is advantageous for the wool or hair to be free from residual pre- -treatment agents and to have a pH in a neutral range.
- the fibre material is treated so as to be free from residual chlorine, and is subsequently or simultaneously neutralised.
- the chlorine present on the fibre or in the fibre is removed by treatment with a reducing agent, for example sodium bisulphite, sodium sulphite etc.
- Neutralisation is advantageously carried out with an alkaline compound, for example an alkali metal carbonate.
- the scaly layer of the wool or hair is partly or only slightly changed or activated.
- woolor hair is obtained which has reduced felt behaviour and does not provoke problems during further processing (spinning, bleaching, dyeing) and during usage and washing of the articles made therefrom.
- the wool which is treated in accordance with the invention has a soft and, which is particularly advantageous, natural woolly handle. When it is chlorina ⁇ ted as tops and is then treated enzymatically as mentioned above, an especially soft wool or hair is produced.
- the dyeing behaviour of the wool or hair which is treated according to the invention and the fastness properties of the dyed wool or hair are also not adversely affected, on the contrary they are considerably improved.
- example 1 The process of example 1 is repeated, whereby after padding and squeezing out, the tops are first of all left for an interim period and then treated for 30 minutes in a HF drier at 100-102°.
- Wool tops are firstly padded for 3 seconds at a temperature of 10-20° on a split padder for tops with chlorine water containing 0.4 X active chlorine. The wool is subsequently rinsed, then treated for 45 seconds with liquor containing 4 g/1 sodium carbonate and 1 g/1 sodium bisul ⁇ phite, and washed twice.
- Wool tops are treated for 60 minutes at 30° with a bath containing, per litre, 15 ml of hydrogen peroxide 40 X by volume and 3 ml of a commercial silicate-free hydrogen peroxide stabiliser, set at a pH of 5.5 - 6.0.
- the liquor-to-goods ratio is 1:20.
- the tops are then rinsed and subsequently treated enzymatically according to the process of example 1.
- Wool tops are treated for 5 hours at 45° with a bath containing, per litre, 15 ml of hydrogen peroxide 40 X by volume and 4 g/1 of sodium pyrophosphate, set at a pH of 7.5 - 8.5.
- the liquor-to-goods ratio is 1:20.
- the wool is subsequently rinsed and then treated enzymatically as described in example 1.
- the wool After rinsing, the wool is treated enzymatically according to example 1.
- Wool tops are padded at 30° with liquor containing, per litre, 25 ml of hydrogen peroxide 40 X by volume and 25 g/1 of potassium persulphate, set at a pH of 7. The pick-up is 60 X. After leaving at room teperature for 10 hours, the wool is washed out and subsequently treated enzymatically as described in example 1 or 2.
- Example 1 is repeated using, instead of esperase, 1 % of bromelain which is applied from a long bath with a liquor-to-goods ratio of 1:20. The treatment continues for 4-6 hours at 50°. After rinsing, the wool tops are dried and show a soft woolly handle and good shrink resistance properties.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88910009T ATE89349T1 (en) | 1987-10-28 | 1988-10-27 | ENZYMATIC TREATMENT OF WOOL. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH4214/87 | 1987-10-28 | ||
CH421487 | 1987-10-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0344250A1 true EP0344250A1 (en) | 1989-12-06 |
EP0344250B1 EP0344250B1 (en) | 1993-05-12 |
Family
ID=4271923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88910009A Expired - Lifetime EP0344250B1 (en) | 1987-10-28 | 1988-10-27 | Enzymatic treatment of wool |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0344250B1 (en) |
JP (1) | JPH02502032A (en) |
KR (1) | KR890701833A (en) |
CN (1) | CN1028781C (en) |
AT (1) | ATE89349T1 (en) |
AU (1) | AU626818B2 (en) |
BR (1) | BR8807268A (en) |
DE (1) | DE3881033T2 (en) |
ES (1) | ES2009361A6 (en) |
WO (1) | WO1989003909A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5529928A (en) * | 1987-10-28 | 1996-06-25 | Schoeller Hardtrum Ag | Enzymatic treatment of wool |
US6599731B1 (en) | 1997-12-30 | 2003-07-29 | Genencor International, Inc. | Proteases from gram positive organisms |
US6794179B2 (en) | 1997-12-30 | 2004-09-21 | Genencor International, Inc. | Proteases from gram positive organisms |
US7033817B2 (en) | 1997-12-30 | 2006-04-25 | Genencor International, Inc. | Proteases from gram positive organisms |
US7078216B2 (en) | 1997-12-30 | 2006-07-18 | Genencor International, Inc. | Proteases from gram positive organisms |
US7129076B2 (en) | 1997-10-23 | 2006-10-31 | Genencor International, Inc. | Multiply-substituted protease variants with altered net charge for use in detergents |
CN107964687A (en) * | 2017-11-28 | 2018-04-27 | 黄桂凤 | A kind of degreasing method of animal wool |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5232851A (en) * | 1990-10-16 | 1993-08-03 | Springs Industries, Inc. | Methods for treating non-dyed and non-finished cotton woven fabric with cellulase to improve appearance and feel characteristics |
NZ297747A (en) * | 1994-12-21 | 2000-01-28 | Novo Nordisk As | Treatment of wool/animal fibre with a plasma treatment followed by proteolytic enzyme treatment |
US5980579A (en) * | 1996-12-17 | 1999-11-09 | Genencor International, Inc. | Process for improved shrink resistance in wool |
US6723550B1 (en) | 1997-07-15 | 2004-04-20 | Genencor International, Inc. | Proteases from gram-positive organisms |
FR2769647B1 (en) * | 1997-10-09 | 2000-05-12 | Peignage Amedee | PROCESS FOR THE MECHANICAL / BIOCHEMICAL TREATMENT OF TEXTILE FIBERS OF ANIMAL ORIGIN, AND THE NEW FIBERS AND NEW ARTICLES THUS OBTAINED |
FR2769646B1 (en) * | 1997-10-09 | 1999-12-03 | Peignage Amedee | PROCESS FOR THE MECHANICAL / BIOCHEMICAL TREATMENT OF TEXTILE FIBERS OF ANIMAL ORIGIN, AND THE NEW FIBERS AND NEW ARTICLES THUS OBTAINED |
DE19807456B4 (en) * | 1998-02-21 | 2008-01-17 | Textilchemie Dr. Petry Gmbh | Felt-free wool and process for its production |
US6051033A (en) * | 1998-05-20 | 2000-04-18 | Novo Nordisk Brochem North America Inc. | Method for enzymatic treatment of wool |
US6140109A (en) * | 1998-05-20 | 2000-10-31 | Novo Nordisk Biochem North America, Inc. | Method for enzymatic treatment of wool |
JP4344950B2 (en) * | 2003-02-06 | 2009-10-14 | 大和化成株式会社 | Shrinking of animal hair fiber |
CN1316117C (en) * | 2005-05-18 | 2007-05-16 | 陕西省科学院酶工程研究所 | Finishing method for preventing felting and shrinking of wood fabric |
CN102965955A (en) * | 2012-10-19 | 2013-03-13 | 江南大学 | Cutinase, keratinase and protease one-bath process anti-felting technology |
CN102965960B (en) * | 2012-11-21 | 2014-12-17 | 山东来利来毛纺有限公司 | Shrink-proof technique of chemical fiber |
CN103643485A (en) * | 2013-11-30 | 2014-03-19 | 江苏金泰针织有限责任公司 | Anti-felting finishing process for knitted woolen sweater |
US20160311997A1 (en) * | 2013-12-31 | 2016-10-27 | Reliance Industries Limited | A process for recovering polyester |
CN105986484B (en) * | 2015-02-13 | 2018-05-29 | 天津滨海东方科技有限公司 | Continuous processing technology without chlorine wool tops and wool product anti-shrinking |
CN104727154B (en) * | 2015-03-12 | 2017-01-18 | 浙江米皇羊绒股份有限公司 | Machine-washable cashmere sweater |
CN105908309A (en) * | 2016-06-30 | 2016-08-31 | 江苏华信亚麻纺织有限公司 | Wet spinning technique for spun silk and flax blending |
CN113430815B (en) * | 2021-07-28 | 2022-03-04 | 武汉纺织大学 | Continuous processing method and device for improving shrinkproof property of wool fabric |
CN114230855A (en) * | 2021-12-18 | 2022-03-25 | 河北省微生物研究所有限公司 | Method for recycling wool fibers by using complex enzyme preparation |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE536819A (en) * | ||||
JPS58144105A (en) * | 1982-02-12 | 1983-08-27 | Kurabo Ind Ltd | Production of descaled animal fiber |
-
1988
- 1988-10-27 AT AT88910009T patent/ATE89349T1/en not_active IP Right Cessation
- 1988-10-27 CN CN88108412A patent/CN1028781C/en not_active Expired - Fee Related
- 1988-10-27 EP EP88910009A patent/EP0344250B1/en not_active Expired - Lifetime
- 1988-10-27 AU AU27101/88A patent/AU626818B2/en not_active Ceased
- 1988-10-27 KR KR1019890701194A patent/KR890701833A/en not_active Application Discontinuation
- 1988-10-27 BR BR888807268A patent/BR8807268A/en not_active Application Discontinuation
- 1988-10-27 DE DE88910009T patent/DE3881033T2/en not_active Expired - Fee Related
- 1988-10-27 JP JP63509208A patent/JPH02502032A/en active Pending
- 1988-10-27 WO PCT/EP1988/000971 patent/WO1989003909A1/en active IP Right Grant
- 1988-10-28 ES ES8803301A patent/ES2009361A6/en not_active Expired
Non-Patent Citations (1)
Title |
---|
See references of WO8903909A1 * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5529928A (en) * | 1987-10-28 | 1996-06-25 | Schoeller Hardtrum Ag | Enzymatic treatment of wool |
US7129076B2 (en) | 1997-10-23 | 2006-10-31 | Genencor International, Inc. | Multiply-substituted protease variants with altered net charge for use in detergents |
US7070990B2 (en) | 1997-12-30 | 2006-07-04 | Genencor International, Inc. | Proteases from GRAM positive organisms |
US6872807B2 (en) | 1997-12-30 | 2005-03-29 | Genencor International, Inc. | Proteases from gram positive organisms |
US7033817B2 (en) | 1997-12-30 | 2006-04-25 | Genencor International, Inc. | Proteases from gram positive organisms |
US7070819B2 (en) | 1997-12-30 | 2006-07-04 | Genencor International, Inc. | Proteases from gram positive organisms |
US6794179B2 (en) | 1997-12-30 | 2004-09-21 | Genencor International, Inc. | Proteases from gram positive organisms |
US7070986B2 (en) | 1997-12-30 | 2006-07-04 | Genencor International, Inc. | Proteases from gram positive organisms |
US7078372B2 (en) | 1997-12-30 | 2006-07-18 | Genencor International, Inc. | Proteases from gram positive organisms |
US7078216B2 (en) | 1997-12-30 | 2006-07-18 | Genencor International, Inc. | Proteases from gram positive organisms |
US7098021B2 (en) | 1997-12-30 | 2006-08-29 | Genencor International, Inc. | Proteases from gram positive organisms |
US6599731B1 (en) | 1997-12-30 | 2003-07-29 | Genencor International, Inc. | Proteases from gram positive organisms |
CN107964687A (en) * | 2017-11-28 | 2018-04-27 | 黄桂凤 | A kind of degreasing method of animal wool |
Also Published As
Publication number | Publication date |
---|---|
CN1028781C (en) | 1995-06-07 |
CN1034032A (en) | 1989-07-19 |
ATE89349T1 (en) | 1993-05-15 |
DE3881033D1 (en) | 1993-06-17 |
DE3881033T2 (en) | 1993-12-02 |
JPH02502032A (en) | 1990-07-05 |
EP0344250B1 (en) | 1993-05-12 |
BR8807268A (en) | 1989-10-31 |
WO1989003909A1 (en) | 1989-05-05 |
ES2009361A6 (en) | 1989-09-16 |
AU626818B2 (en) | 1992-08-13 |
KR890701833A (en) | 1989-12-21 |
AU2710188A (en) | 1989-05-23 |
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