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
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/58—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
  • D06M11/67—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with cyanogen or compounds thereof, e.g. with cyanhydric acid, cyanic acid, isocyanic acid, thiocyanic acid, isothiocyanic acid or their salts, or with cyanamides; with carbamic acid or its salts
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
  • Y10S8/92—Synthetic fiber dyeing
  • Y10S8/921—Cellulose ester or ether

Definitions

• the object of this invention is to devise a process for the prevention, total or partial, of the delustering of artificial silk prepared from organic derivatives of cellulose, whether the same be in thread, fiber or fabric form.
• Another object of this invention is to prevent the delu'stering of such artificial silk when Application filed December ,30, 1926. Serial N6. 158,127.
• Sodium sulphocyanide, potassium sulphocyanide, ammonium sulphocyanide, calcium sulphocyanide, barium sulphocyanide have been utilized with varying degrees of success.
• the choice of the particular salt to be used will depend upon the nature of the bath in which it is desired to use the same. If the salt is to be added to a dye bath in large quantities it will be necessary to add the sodium or potassium sulphocyanide, preferably the former, and similarly when the salt is added to a bath containing soap. At other times the use of calcium sulphocyanide is recommended. The following are some examples of the manner in which the applicants invention can be utilized:
• Example I A cellulose acetate fabric was treated at the boil for of an ho ur ina bath containing 10 grams per litre of calcium sulphocyanide. The fabric, after drying, was found to have lost but very little of its original luster.
• Example [I) A cellulose acetate fabric was subjected to a process as outlined in Example I, using 100 grams of calcium sulphocyanide per litre ofbath. The fabric, after drying,- had its original luster.
• Example I A fabric of cellulose acetate silk was treated as outlined in Example I, substituting ammonium sulphocyanide for the calcium sulphocyanide. The luster was partly protected by the ammonium sulphocyanide but the protection obtained was not so 'good as the protection obtained using calcium sulphocyanide.
• Example I V A process similar to that outlined in Example II, employing ammonium sulphocyanide in the-place of calcium sulphocyanide, was carried out on cellulose acetate fabric. The luster of the fabric was protected but not to the same extent as in Example II.
• Example V A cellulose acetate fabric was treated as in Example I, using 265 grams of ammonium sulphocyanide per litre. The luster of the fabric after this treatment was found to be virtually unaltered.
• Example VI A cellulose acetate fabric was treated according to the process outlined in Example I, utilizing 10 grams of sodium sulphocyanide per litre in the place 'of calcium sulphocyani'de. The luster of the fabric, after this treatment, was preserved, but to a lesser degree than it was by the treatments outlined in Examples I and III.
• Ewample VIII A cellulose acetate fabric was treated in a dye bath containing 3% SRA blue III and to which bath had been added 10 grams per litre of sodium sulphocyanide. The fabric was dyed at the boil for one hour. A marked 7 loss in the luster of the fabricwas noticed but I the relustering was not as great as in a similar treatment in the absence of sodium sulpho- ,oyanide. This treatment was repeated in the presence of soap, and it was observed that the fabric suffered a greater loss of luster in the presence of the soap. This indicates that i the protective effect of the 'sulphocyanide is lessened by' the presence of soap.
• Example X Stockings made from cellulose acetate silk were treated in an open tub at the boil for one hour in a bath containing 10 grams of sulphocyanide per litre. The stockings retained their original luster, had a good full handle and did not show any teethy effect.
• the calcium sulpho cyanide appears to be the most eflicacious in preventing the loss-of luster in the organic derivatives Y of cellulose.
• the ammonium and barium sulphocyanldes are also very good but are not quite as effective as the calcium salt.
• suflicient protection can be obtained by increasing, within certain limits, the concentration of the sulphocyanide in the bath.
• the salts of the classes above specified in addition to having the property of preserving the luster of cellulose acetate and similar artificial silks, have a further desirable eifect on such materials.
• the improvement in the softness and handle and appearance of the fabric when treated with a solution of the salts is probably due to this swelling action of the salts upon the fabric.
• the applicants invention is not to be considered as limited by the examples hereinbefore given.
• the invention is of great importance in the treatment of mixed fabrics made from yarns or threads of organic cellu lose esters and cotton, wool or silk or any of them.
• any one or more of the salts enumerated can be utilized in this process, the choice of the particular salt being determined by treatment to which the fabric is being subjected.
• the quantity of the particular salt added can be varied within a wide range depending upon the extent of delustering of the organic cellulose derivative desired. The percentages as given in the claims are based upon the bath and not upon the fabric or material being treated.
• a process of controlling the delustering of materials comprising organic derivatives of cellulose which consists in adding to a hot bath in which such delustering is apt to occur.
• a process of protecting the luster of materials comprising organic derivatives of cellulose which consists in adding to a hot bath in which delustering of such material is apt to occur, sulphocyanide of calcium.
• a process of preserving the luster of materials comprising organic esters of cellulose which consists in adding to a hot bath in which delustering of such material is apt to occur, a saltof the formula RCNS, where R denotes ammonium or a metal of the alkaline or alkaline-earth series.
• a process of controlling the delustering of materials comprising organic esters of cellulose which consists in adding to a hot bath in which such delustering is apt to occur, a sulphocyanide of an alkali-earth metal.
• a process of controlling the delustering of materials comprising organic esters of cellulose which consists in adding to a hot bath in which such delustering is apt to occur, sulphocyanide of calcium.
• a process of preserving the luster of materials containing cellulose acetate which comprises adding to a hot bath in which delustering is apt to occur, a salt of the formula RCNS, where R denotes ammonium or a metal ofthe alkaline or alkaline-earth series.
• a process of controlling the delustering of materials containing cellulose acetate which comprises adding to a hot bath in which such delustering is apt to occur, a sulphocyanidc of an alkali-earth metal.
• a process of protecting the luster of materials containing cellulose acetate which comprises adding to a hot bath in which decur 0.1%30% of a salt having the formula 'RCNS, where R denotes ammonium or a -1netal of the alkaline or alkaline-earth series.
• a process of protecting the luster of filaments and fabrics of organic esters of cellulose which comprises adding to a hot bath in which delustering of such material is apt to occur 0.1%10% of a sulphocyanide of an alkali-earth metal.
• a process of preserving the luster of filaments and fabrics of organic esters of cellulose which comprises adding to a hot bath in which delustering of such material is apt to occur 0.1%10% of calcium sulphocyanide.
• a process of controllingthe delustering of filaments and fabrics of organic esters of cellulose which comprises adding to a hot bath in which such delustering is apt to occur 1% of a salt having the formula RCNS, where R denotes ammonium or a metal of the alkaline or alkaline-earth series.
• a process of protecting the luster of filaments and fabrics of organic esters of cellulose which comprises adding to a hot bath in which delustering of such material is apt to occur, 1% of a sulphocyanide of'an alkali-earth metal.
• a process of preserving the luster of filaments and fabrics of organic esters of cel-- lulose which comprises adding to a-hot bath in which delustering of such material is apt to occur, 1% of calcium sulphocyanide.
• R denotes ammonium-or a metal of the alkaline or alkaline-earth series, whereby the luster of the organic derivative of cellulose is preserved.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Coloring (AREA)

Priority Applications (4)

Applications Claiming Priority (1)

Publications (1)

Family

ID=22566788

Family Applications (1)

Country Status (4)

Cited By (1)

• 0
  • BE BE346989D patent/BE346989A/xx unknown
• 1926
  • 1926-12-30 US US158127A patent/US1740889A/en not_active Expired - Lifetime
• 1927
  • 1927-11-23 GB GB31485/27A patent/GB282722A/en not_active Expired
  • 1927-12-01 FR FR644985D patent/FR644985A/fr not_active Expired

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