EP0460036B1 - Bain unique de degommage et de decoloration pour soies naturelles - Google Patents
Bain unique de degommage et de decoloration pour soies naturelles Download PDFInfo
- Publication number
- EP0460036B1 EP0460036B1 EP90903801A EP90903801A EP0460036B1 EP 0460036 B1 EP0460036 B1 EP 0460036B1 EP 90903801 A EP90903801 A EP 90903801A EP 90903801 A EP90903801 A EP 90903801A EP 0460036 B1 EP0460036 B1 EP 0460036B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alkyl
- alkali metal
- weight
- ammonium salts
- carboxylic acid
- 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
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01C—CHEMICAL OR BIOLOGICAL TREATMENT OF NATURAL FILAMENTARY OR FIBROUS MATERIAL TO OBTAIN FILAMENTS OR FIBRES FOR SPINNING; CARBONISING RAGS TO RECOVER ANIMAL FIBRES
- D01C3/00—Treatment of animal material, e.g. chemical scouring of wool
- D01C3/02—De-gumming silk
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
Definitions
- the invention relates to agents for the one-bath degassing and decolorization of natural silk, a process for the degassing and decolorization of natural silk as well as the use of certain surfactants in certain amounts for the one-bath degassing and decolorization of natural silk.
- the double thread made of fibroin produced by the silk spinner is covered by sericin, the silk bast. Since the sericin shell gives the raw silk a hard and rough feel, a matt appearance and a brown to yellow / yellow-green color, the sericin must be removed from the raw silk thread by boiling to achieve a shiny, soft silk thread (International textile practice 739 - 747 ( 1988)). Sericin removal, the so-called degreasing, often takes place in soap baths at bath temperatures between 90 and 98 ° C in two successive baths. The first bath contains soaps in amounts, for example, between 12 and 20 g per liter. In the second bath, the repassing bath, the soap concentration is between 5 and 15 g per liter, for example.
- the degassing takes between 3 and 6 hours, in some cases the degassing time can be over 6 hours.
- other disadvantages have to be accepted in the case of soap degassing.
- the degreasing must be carried out in softening water to avoid the formation of insoluble calcium soaps.
- a separate bleaching step is required due to unsatisfactory discoloration results.
- the aqueous agents for degumming silk described in DE-OS 32 47 095 contain polyacrylic acids with average molecular weights between 3,500 and 4,500, sequestering agents, boric acid, one or more wetting agents and alkali in the form of sodium hydroxide solution.
- Ethoxylated fatty alcohols with 8 to 18 carbon atoms, C 8-18 fatty alcohol ether sulfates, sulfochlorinated C, 5- paraffin, 2-ethylhexyl sulfate, sodium salt and / or nonylphenol with 4 to 18 moles of ethylene oxide are mentioned as wetting agents.
- degreasing agents whose wetting agent content is between 2 and 10 parts by weight, are used in degreasing baths in amounts between 10 and 15 g per liter.
- the disadvantage of these agents is that in the case of natural silk no satisfactory decolorization can be achieved, so that the use of bleaching agents in the degreasing bath or a separate bleaching step is required.
- the object of the present invention was to develop a composition which, in addition to a good degree of degreasing, causes such a good decolorization on natural silk, that the use of bleaching agents in degassing baths or a separate bleaching step becomes superfluous. Furthermore, when using the agent to be developed, the raw silk thread is to be completely debased and decolorized within a short period of time and the fibroin thread should not be damaged.
- Ethoxylated and / or propoxylated C 10-22 alkyl and / or C 10-22 alkenyl alcohols with iodine numbers between 0 and 60 can be obtained by reacting straight and / or branched chain C 10-22 alkyl and / or C 10 -22 -Alkenyl alcohols of natural and / or synthetic origin with ethylene oxide and / or propylene oxide according to known industrial processes (see, for example, in "Chemical Technology", Volume 7, pages 131 to 132, Carl Hanser Verlag, Kunststoff-Vienna (1986)).
- the average degree of oxalkylation of the oxalkylates obtained which corresponds to the molar amount of the alkylene oxides added, is between 2 and 40, preferably between 2 and 10.
- alkyl and / or alkenyl alcohols having 10 to 22 carbon atoms, preferably having 12 to 22 carbon atoms.
- atoms for example, are decyl, iso-tridecyl, myristyl, cetyl, stearyl and / or behenyl alcohol, cetyl further technical / Oleylalkoholgemische and / or technical alcohol mixtures with predominantly C, 2 - 14 alkyl and / or C 12-14 alkenyl alcohols, C 12-18 alkyl and / or C 12-18 alkenyl alcohols and / or C 18-22 alkyl and / or C 18-22 -Alkenylalkohole, for example coconut fatty alcohol, tallow fatty alcohol and / or rapeseed oil alcohol.
- the iodine number of ethoxylated and / or propoxylated alkyl and / or alkenyl alcohols is preferably between 0 and 50.
- Polyethers of the general formula can be prepared by alkoxylation of alkylphenols or Guerbet alcohols with ethylene oxide using known industrial processes ("Chemical Technology", volume 7, pages 129 to 133, Carl Hanser Verlag, Kunststoff-Vienna (1986)).
- the average degree of oxalkylation of the oxalkylates obtained is between 2 and 10, preferably between 4 and 8.
- Nonylphenols are preferably used as alkylphenols.
- Suitable Guerbet alcohols are accessible by condensation of primary C 8-12 fatty alcohols in the presence of alkali at temperatures between 200 and 300 ° C (Angew. Chem. 64, 213 to 220 (1952)).
- the hydroxyl group of the ethoxylated Guerbet alcohols is preferably etherified with C 1-5 alkyl halides.
- Aliphatic C 10-22 carboxylic acid alkyl esters are accessible by transesterification of fats and oils with excess C 1-4 alkyl alcohols in the presence of alkaline catalysts (Winnacker / Küchler in "Chemische Technologie", Volume 7, page 105, Carl Hanser Verlag, Kunststoff-Vienna 1986).
- Carboxylic acid methyl esters having 12 to 18 carbon atoms for example methyl lauric acid, myristic acid, palmitic acid, stearic acid and / or oleic acid, are preferably used.
- C 10-22 alkyl and / or C 10-22 alkenyl sulfates in the form of their alkali, ammonium and / or amine salts are prepared in a manner known per se by sulfating the corresponding alkyl and / or alkenyl alcohols with chlorosulfonic acid or sulfur trioxide .
- the resulting sulfuric acid half-esters of the alcohols are then neutralized with, for example, alkali metal hydroxide solution, such as sodium hydroxide solution, ammonia or alkanolamines, such as monoethanolamine or triethanolamine (Winnacker / ippochler in "Chemische Technologie", Volume 7, pages 120 to 123, Carl Hanser Verlag, Kunststoff-Vienna ( 1986)).
- alkyl and / or alkenyl alcohols can be straight or branched, natural or synthetic in origin and have 10 to 22 carbon atoms, preferably 12 to 18 carbon atoms.
- alkyl and / or alkenyl alcohols are decyl, lauryl, myristyl, cetyl, stearyl, oleyl, behenyl alcohol and mixtures of these alcohols.
- lauryl, myristyl alcohol or stearyl alcohol mixtures of these alcohols or alcohol mixtures with predominantly C12 - C18 alkyl and / or C 12-18 alkenyl alcohols and / or C 2 - 14 alkyl and / or C12 - 14 - Alkenyl alcohols, for example coconut oil alcohol and / or tallow oil alcohol, are used.
- Aliphatic C 10-22 -Carbonkladiethanolamide and / or-polydiethanolamide be prepared by reaction of aliphatic, linear and / or branched chain C 10-22 carboxylic acids of natural and / or synthetic origin with diethanolamine at temperatures between 150 and 180 ° C to produce ( "Chemistry and Technology ", Volume 7, page 129, Carl Hanser Verlag, Kunststoff-Vienna (1986)).
- coconut fatty acid diethanolamide and / or polydiethanolamide, lauric acid diethanolamide, lauric / myristic acid diethanolamide and / or oleic acid diethanolamide and / or polydiethanolamide are examples of suitable diethanolamides and / or polydiethanolamides.
- Alkali, alkaline earth and / or ammonium salts of sulfosuccinic acid mono- and / or di-C 8-18 alkyl esters are obtained by esterification of straight-chain and / or branched-chain alkyl alcohols of natural and / or synthetic origin with maleic anhydride and subsequent reaction with sodium hydrogen sulfite produced (Winnacker / Küchler: "Chemische Technologie", volume 7, pages 119 to 120, Carl Hanser Verlag, Kunststoff-Vienna, (1986)).
- alkyl alcohols with 8 to 18 carbon atoms are iso-octanol, iso-nonanol, iso-decanol, lauryl alcohol, myristyl alcohol and / or stearyl alcohol.
- the agents according to the invention preferably contain alkali salts of sulfosuccinic acid mono-C10-18 alkyl esters, for example sulfosuccinic acid monolauryl ester, sodium salt.
- Another subject of the invention is a process for the degumming and decolorization of natural silk with aqueous, alkaline liquors, containing polyacrylic acids with average molecular weights between 3,500 and 4,500, sequestering agents, wetting agents and buffer salts, which is characterized in that natural silk in a bath at temperatures between 90 and 98 ° C treated with bleach-free aqueous liquors with pH values between 10 and 12, the 2.5 to 10 g of surfactants from one or more of the following groups per liter of liquor
- the invention furthermore relates to the use of surfactants from one or more of groups a) to f) in bleach-free aqueous, alkaline liquors in amounts of between 2.5 and 10 g of active substance per liter for single-bath degassing and decolorization of natural silk.
- the pH of the liquors is adjusted to between 10 and 12 using alkali lye, for example sodium and / or potassium lye.
- Surfactants from groups a) and / or b) are particularly preferably used in the liquors.
- the liquors of the process according to the invention are prepared in such a way that demineralized water or water with up to 26 ° dH either the agents according to the invention as such or surfactants and optionally alkali metal hydroxide solution are added separately from polyacrylic acids, sequestering agents, boric acid and alkanesulfonates.
- Natural silk for example tussah silk, Vietnamese wild silk or Chinese mountain silk, can be debossed as yarn on spray arm dyeing machines or on the bark, as a fabric on the star, on the silk reel runner or on the silk jet.
- the liquor ratio is between 1:25 and 1: 100.
- the method according to the invention it is possible to use natural silk within a short time, i. H. Decolorize in a bath within 30 to 60 minutes and completely degrease. Very light silk without fibroin damage is obtained, so that bleaching is unnecessary in most cases.
- the silk is characterized by a full, soft and smooth feel and can be dyed evenly with all dyes suitable for silk, for example direct, acid, metal complex, noun and / or reactive dyes.
- Thai wild silk with a liquor containing no surfactant additive was 0.43 g of polyacrylic acid with an average molecular weight of 3,800, 0.32 g of 1-hydroxyethane-1,1-diphosphonic acid, sodium salt, and 0.6 g of crystallized boric acid and 0.36 g of C 15 alkanesulfonate, sodium salt (50% by weight monosulfonate and 50% by weight disulfonate) were debased.
- the degree of whiteness was determined on an Elrepho device from Zeiss with filter R 46, measured as% remission (the greater the% remission value, the better the decolorization).
- EO means ethylene oxide, PO propylene oxide.
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- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Animal Husbandry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Detergent Compositions (AREA)
- Cosmetics (AREA)
Abstract
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3906045A DE3906045A1 (de) | 1989-02-27 | 1989-02-27 | Einbadiges entbasten und entfaerben von naturseiden |
DE3906045 | 1989-02-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0460036A1 EP0460036A1 (fr) | 1991-12-11 |
EP0460036B1 true EP0460036B1 (fr) | 1993-09-01 |
Family
ID=6375015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90903801A Expired - Lifetime EP0460036B1 (fr) | 1989-02-27 | 1990-02-19 | Bain unique de degommage et de decoloration pour soies naturelles |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0460036B1 (fr) |
KR (1) | KR920700317A (fr) |
CN (1) | CN1045136A (fr) |
BR (1) | BR9007170A (fr) |
CA (1) | CA2011013A1 (fr) |
DE (1) | DE3906045A1 (fr) |
WO (1) | WO1990010099A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1069706C (zh) * | 1998-04-09 | 2001-08-15 | 俞祥根 | 真丝纤维的预处理工艺及其制品 |
CN102199792B (zh) * | 2011-05-26 | 2013-09-04 | 江苏泗绢集团有限公司 | 一种桑蚕绢纺原料除油脱胶洗练机 |
US9963802B2 (en) | 2014-03-04 | 2018-05-08 | Basf Se | Method of delinting cotton seeds |
CN104074047B (zh) * | 2014-07-11 | 2016-03-02 | 上海多纶化工有限公司 | 纺织精练剂 |
CN110029401A (zh) * | 2019-04-12 | 2019-07-19 | 苏州丝之源纺织科技有限公司 | 一种用于天然彩色蚕丝的低温脱胶剂及其脱胶方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1151601B (it) * | 1982-06-08 | 1986-12-24 | Henkel Chimica Spa | Prodotto e procedimento per la sgommatura della seta naturale |
-
1989
- 1989-02-27 DE DE3906045A patent/DE3906045A1/de not_active Withdrawn
-
1990
- 1990-02-19 EP EP90903801A patent/EP0460036B1/fr not_active Expired - Lifetime
- 1990-02-19 KR KR1019900702346A patent/KR920700317A/ko active IP Right Grant
- 1990-02-19 BR BR909007170A patent/BR9007170A/pt not_active Application Discontinuation
- 1990-02-19 WO PCT/EP1990/000268 patent/WO1990010099A1/fr active IP Right Grant
- 1990-02-21 CN CN90100855A patent/CN1045136A/zh active Pending
- 1990-02-27 CA CA002011013A patent/CA2011013A1/fr not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
KR920700317A (ko) | 1992-02-19 |
CN1045136A (zh) | 1990-09-05 |
EP0460036A1 (fr) | 1991-12-11 |
CA2011013A1 (fr) | 1990-08-27 |
WO1990010099A1 (fr) | 1990-09-07 |
BR9007170A (pt) | 1991-12-17 |
DE3906045A1 (de) | 1990-09-06 |
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