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
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain

Definitions

• the invention relates to a preparation for shrink-proofing wool.
• GB-PS 746 307 describes a method for preventing the shrinkage of the wool, the wool fibers being equipped with certain organopolysiloxanes. A certain degree of shrink resistance is achieved in this way, but this effect is not washable.
• a siloxane-in-water emulsion is also known, containing (A) a polydiorganosiloxane, (B) an organosiloxane with at least 3 silicon-bonded hydrogen atoms and alkyl radicals with less than 19 carbon atoms as organic substituents and (C ) one or more cationic and / or nonionic emulsifiers, characterized in that the polydiorganosiloxane (A) has a molecular weight of at least 2500 and terminal OX radicals, where X is a hydrogen atom, an alkyl radical with 1 to 15 carbon atoms or an alkoxyalkyl radical with 3 to 15-carbon atoms means at least two of the silicon-bonded substituents of the polydiorganosiloxane are monovalent radicals of carbon, Are hydrogen, nitrogen and optionally oxygen, which contain at least two amino groups and via a silicon-carbon bond to silicon.
• the polydiorganosiloxane are bound and at least 50% of all substituents of the polydiorganosiloxane are methyl groups and the otherwise present substituents are monovalent hydrocarbon radicals having 2 to 20 carbon atoms, and that the emulsion also contains (D) magnesium sulfate and / or sodium sulfate.
• This emulsion is said to treat keratin fiber goods e.g. sweaters.
• a disadvantage of these emulsions and also of the diluted liquors produced therefrom is that the hydrogen groups from the hydrogen siloxanes are accelerated by the amino groups of the aminoalkyl-modified siloxane diols. This affects and shortens the stability of the emulsions and the diluted liquors. At the same time, the effectiveness of the fleets decreases, as will also be shown in a comparative example below. In addition, it can be seen that, in particular, light and natural-colored wool yellows when treated with these products.
• the invention is therefore based on the object of finding a preparation for shrink-proofing wool which is stable in storage, does not cause yellowing in natural-colored or white wool and leaves the treated wool in its original state even after repeated washing. At the same time, the feel of the treated wool or of the knitted fabrics and fabrics made from the wool should not be adversely affected.
• An essential feature of the process according to the invention is thus the simultaneous presence of siloxanes with mercapto hydrocarbon residues and hydrogen residues bound to silicon. It is possible to either Copoly to use merisates in which the units aa) and ab ) are present side by side in the middle molecule, or to use mixtures of silcxanes in which the one siloxane mixture partner contains units aa) and the second siloxane mixture partner has units ab).
• Preparations are particularly preferred which contain organopolysiloxanes in which the residues R 1 to 0.1 to 0.5 mol% consist of mercaptoalkyl or mercaptoaryl residues and the remaining portion R 1 residues are methyl residues.
• Examples of mercaptoalkyl or mercaptoaryl radicals bonded to the polysiloxane skeleton are the mercaptomethyl, '2-mercaptoethyl, 3-mercaptopropyl,' 3-mercaptoisobutyl or mercaptophenyl radical.
• the 3-mercaptopropyl radical is particularly preferred.
• a preferred preparation according to the invention is characterized in that it contains organopolysiloxanes in which the residues R 2 to 36 to 48 mol% consist of hydrogen residues, m has a value of 2.2 to 2.03 and the remaining portion R 2 residues Are methyl residues.
• a preparation with the characteristic that it is siloxanes of the structural unit ab) is particularly preferred for those of the formula where p has a value from 3 to 50.
• n has a value from 1.990 to 1.998.
• the residues R1 and R 2 unless they are mercaptoalkyl or mercaptoaryl residues or hydrogen residues, are methyl residues. However, it is permissible that up to 10 mol% can be replaced by longer-chain alkyl or aryl radicals. Examples of such alkyl or aryl radicals are the ethyl, propyl, dodecyl or phenyl radical.
• the preparation according to the invention can be in the form of an emulsion. However, it can also be used in the form of a solution in organic solvents.
• the preparation of the preparation according to the invention in emulsion form is achieved in a known manner by emulsification using emulsifiers, for example nonionic emulsifiers, as can be obtained by adding ethylene oxide and / or propylene oxide to compounds having an acidic hydrogen radical, for example fatty alcohol, such as lauryl alcohol or stearyl alcohol.
• emulsifiers for example nonionic emulsifiers
• an acidic hydrogen radical for example fatty alcohol, such as lauryl alcohol or stearyl alcohol.
• Cationic emulsifiers, such as quaternary ammonium compounds which are on nitrogen, are particularly preferred have at least one longer-chain radical which brings about hydrophobicity.
• a suitable emulsifier is e.g. B. Trimethyl lauryl ammonium chloride.
• chlorinated hydrocarbons such as e.g. 1,1,1-trichloroethane, preferred.
• the preparation can contain conventional additives, e.g. optical brighteners, flame retardants, agents influencing the feel of the textiles, fixing aids, odorants.
• additives e.g. optical brighteners, flame retardants, agents influencing the feel of the textiles, fixing aids, odorants.
• Organopolysiloxane copolymers which are suitable for the preparations according to the invention and have units of the formulas aa) and ab) can have the following structures, for example: where R consists of 0.33 mol% of mercaptopropyl residues and the remaining residues R are methyl residues.
• Organopolysiloxanes that are used in the form of their mixtures can be structured as follows:
• R 1 is as defined above.
• an emulsion - emulsion B - of 25 wt .-% polymethylhydrogensiloxane of the formula neutralized by the addition of 15 g of a 10% acetic acid and at the same time a pH of 4 to 5 was set.
• a siloxane copolymer is prepared by heating 7.5 parts by weight of CH 3 (CH 3 O) 2 Si (CH 2 ) 3 NHCH 2 CH 2 NH 2 and 1000 parts by weight of a polydimethylsiloxane with a hydroxyl group on each terminal silicon atom and a viscosity of about 4500 cSt manufactured at 25 ° C. The heating is carried out at 150 C under nitrogen and vigorous stirring for 2 hours. The copolymer formed is a clear liquid with a viscosity of about 6000 mm 2 / s at 25 ° C.
• the amount of water used is 64.11 parts by weight and the pH of the emulsion is adjusted to about 4.0 by adding acetic acid.
• Knitted wool fine material is treated with the mentioned in Examples 1 to 4, but further diluted preparations on padder so that, after a 5-minute T rock- drying the impregnated knitted fabric at 140 C results in a solid support of 2%.
• preparation c) from example 1 is used to finish the fine wool material in a pull-out process in a laboratory reel runner.
• a 200 g heavy knitted strip is treated in a liquor of 1.5 l water, 8 g emulsion according to the preparation 1 c) and 8 g Na 2 S 2 O 5 .
• the active ingredient is absorbed 100% on the wool within 15 to 20 minutes.
• the organopolysiloxane coating is also 2% in this case, based on the amount of fine wool material used.
• Preparation c) from example 1 and a mixture of 92.5% by weight of emulsion C and 7.5% by weight of emulsion D from comparative example 4 are used again for treatment of the knitted fine wool material 8 days after mixing.
• the knitted wool is treated with the further diluted emulsions on the padder in such a way that, after drying, the active substance requirements are 2%, as already described.
• the shrink resistance of the samples treated in application examples 1 to 8 is determined according to the recommendations of the International Wool Secretariat, Test Method 185.
• fabric samples are subjected to 3-hour washes in an International Cubex machine. From the dimensions of the fabric before and after the washes, the surface felt shrinkage can be done according to the formula be determined.
• % L percentage length shrinkage
• % B percentage width shrinkage.
• the unfinished sample shows a strongly matted surface.
• the handle of the treated samples is also significantly softer after washing than the handle of the untreated material before washing.
• the samples treated according to the invention show no yellowing in comparison to the sample which is treated with the preparation from comparative example 4 in application example 5.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Compositions Of Macromolecular Compounds (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6111743

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (2)

Citations (5)

Family Cites Families (2)

• 1980
  • 1980-09-12 DE DE19803034380 patent/DE3034380A1/de not_active Withdrawn
• 1981
  • 1981-08-26 US US06/296,569 patent/US4405328A/en not_active Expired - Fee Related
  • 1981-09-03 DE DE8181106880T patent/DE3161434D1/de not_active Expired
  • 1981-09-03 AT AT81106880T patent/ATE5336T1/de not_active IP Right Cessation
  • 1981-09-03 EP EP81106880A patent/EP0047922B1/fr not_active Expired
  • 1981-09-11 AU AU75152/81A patent/AU541233B2/en not_active Ceased

Patent Citations (7)

Also Published As

Similar Documents

Legal Events