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
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
  • D06M13/395—Isocyanates
• • 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
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
  • D06M13/402—Amides imides, sulfamic acids
  • D06M13/425—Carbamic or thiocarbamic acids or derivatives thereof, e.g. urethanes

Definitions

• textile materials are -.impregnated with aqueoussolutions:or dispersions .of carbamic acids containing higherlaliphatic hydrocarbon radicals'.
• Theaqueousssolutions ortdispersions'rnay also contain paraffins, .iwaxes, fats, 1 resin forming zsubstances, salts of polyvalent metals,..s oapst of polyvalent metals or silicones.
• the textile materials treated with these solu- ,'tions or dispersions are'd-ried at temperatures above 100 1C.
• the drying process may be car-ried out in-two steps, -:yiz., by :pre-dryingthe textile materials at lower temperatures-at about 80-400 -C.-a-ndsubsequently drying-'shor'tlyat-about 110 C. or aba-hi'gher temperature.
• Another embodiment 'of' the invention consists in drying theimpregnated textile materials, rinsing-them with-hot *water and -drying them once more, it-being tobe under- -s'toddthatthe temperature'must'exceed l" C. at least in one dryingstep.
• the -carbamicacidscontaining higher aliphatic hydrocarbon radicals -which are-used-accordingto the present invention may be obtained in any suitable-manner, ezg. by reaeting'the addition-products ofalkali metal bisul- "fites and higher aliphatic isocyanates with equivalent amounts of alkali metal hydroxides in anaqueous medium-in*the-'heat vat temperatures not-exceeding 90 C.
• soap maybe added to the. carbamic acids or to the impregnating baths and the textile material is subsequently -treated:with Water-soluble salts of olyvalent ;me,ta1s,:1forinstance withaluminumsaltssuch as aluminumnacetate, ,preferably zirconium salts such as zirconium oxychloride adjusted to pH 4.0, zirconium acetate or zirconium formate.
• the treatment with salts of polyvalent metals results in an improved impregnating efiect which is retained after washing with soap or with organic solvents.
• the tendency of textile materials to wrinkle and shrink can be reduced by the addition of resin forming substances, such as methylol urea or melamine methylol ice ,ether, .tojhe carbamicacidsusedaccording to theain- .vention.
• resin forming substances such as methylol urea or melamine methylol ice ,ether, .tojhe carbamicacidsusedaccording to theain- .vention.
• Example 1 is soaked with .theabove emulsion, squeezed. so .thatthe increase in..weight is 60%, heated-to 100 until it is dry and subsequentlyheated to 120 for a further 5 minutes.
• Examplev 2 The emulsion,prepared according to Example 1 is salted 2 out:by; means. .of .sodium chlorideand the precipitate is washed with 5% sodium chloridesolution and finally with Water until the filtrate is. free from sodium sulfite.
• the paste obtained is made into an emulsion at 85 byadding 400 cc; of" hot water and the emulsion is filled "up 13 literhy adding water of 40.
• Cotton poplin issoaked with the emulsion obtained, squeezed so that the increase in weight is 60%, dried first at 100 and afterwards heatedto 120 for- 5'minutes.
• the impregnated fabric is treated with hot water until it is completely wetted Whereafter it is squeezed and'finally dried at l10l15.
• The' poplin possesses excellent water repellent properties-which otherwise can'only be obtained with impregnating agents containing paraifin.
• Example 3 An emulsion is prepared according to'Example 2. Before salting out, however, 20 g. of an emulsion consist- :ing-of 4.85:g.. of paraffin, l-.'55-g. of an ester of mon- :tanic acidhaving 'thetacid'number 7.5, 0.95- g. of olein having. the acid number 155, 0.95 g. of a'44% sodium :hydroxide-solution-and11.7 -cc.- of waterare added to the ;starting emulsion.
• the textile materials are soft and full to the touch and possess an excellent water repellent effect which is fast to washing with soap and organic solvents.
• Example 5 A.solution of '25 grams of the addition product of stearyl isocyanate and sodium bisulfite are dissolved in tained made up to 4 liter by the additionof water of 50.
• Cotton poplin is impregnated with the emulsion obtained,.squeezed and dried shortly at 100 and at 115- Thereafter the textile material is rinsed with boiling water until it is completely wetted and dried at 110. n
• the poplin possesses a very good water repellent effect which is retained after washing five times with gasoline or carbon tetrachloride.
• Example 6 An emulsion which contains per liter 25 grams of stearyl carbamic acid and 2 cc. of 30% acetic acid and which is heated to 60 for about 30 minutes is applied to cotton poplin.
• the impregnated material is squeezed so that the increase in weight amounts to 60-70% and dried, first at about 100 and then at 120 for a further 5 minutes.
• the impregnated cotton poplin which is soft and full to the touch possesses excellent water repellent properties which are fast to repeated washing with the gasoline or carbon tetrachloride.
• the stearyl carbamic acid can be obtained in the following manner:
• the emulsion The pulpy mass is coagulated with saturated sodium chloride solution, filtered and the residue is washed first with 3% sodium chloride solution until no sulfite can be detected in the filtrate any longer, and then with cold water until the filtrate becomes bluish .zirconium hydroxide) in 500 cc. of water of 30.
• the reaction product obtained contains 95% of stearyl carbamic acid.
• Example 7 Cotton poplin is impregnated with the emulsion, described in Example 2, after addition of 40 grams of dirnethylol urea and 2 cc. of 30% acetic acid. The
• the poplin is water repellent and distinctly less liable to wrinkling.
• Example 8 50 grams of an aqueous paste, which contains 15 grams of stearyl carbamic acid and 2 grams of the addition product of sodium bisulfite and stearyl isocyanate, are heated with 200 cc. of water to for 5 minutes, then diluted with water 'to 500 'cc., and the emulsion is added slowly with good stirring at 30 to'500 cc. of a -2% solution of zirconium acetate prepared bydissolving zirconium hydroxide in acetic acid.
• Rain coat material of cottongabardine is impregnated with the emulsion obtained, squeezed and dried at The'fabric possesses a water repellent effect which is retained after repeated treatment with gasoline.
• Example 9 40grams of the aqueous paste containing stearyl carbarnic acid of Example 8 are heated with 300 cc. of
• a poplin fabric of pure cotton is soaked with the emulsion, squeezed and dried, first at 95 and then at 125' for 5 minutes.
• the poplin possesses a water repellert effect which is substantially retained after washing five times with gasoline and ironing.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

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Cited By (4)

Citations (5)

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• 0
  • BE BE520589D patent/BE520589A/xx unknown
  • NL NL90538D patent/NL90538C/xx active
• 1952
  • 1952-06-11 DE DEF9239A patent/DE1009153B/de active Pending
• 1953
  • 1953-06-09 US US360609A patent/US2906776A/en not_active Expired - Lifetime
  • 1953-06-09 GB GB15864/53A patent/GB767945A/en not_active Expired
  • 1953-06-10 FR FR1086807D patent/FR1086807A/fr not_active Expired

Patent Citations (5)

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