US3664805A - Composition for scouring natural silk and textile fibres - Google Patents

Composition for scouring natural silk and textile fibres Download PDF

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Publication number
US3664805A
US3664805A US796A US3664805DA US3664805A US 3664805 A US3664805 A US 3664805A US 796 A US796 A US 796A US 3664805D A US3664805D A US 3664805DA US 3664805 A US3664805 A US 3664805A
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United States
Prior art keywords
composition
scouring
silk
natural silk
sodium
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Expired - Lifetime
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US796A
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English (en)
Inventor
Raymond Machon
Jean Flechet
Etienne Hugo
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Individual
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Individual
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    • 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

Definitions

  • Our invention has for its object a novel composition for scouring natural silk and textile fibres within the scope of the technique relating to the treatment of textile material.
  • the chemical composition of the outer sericine layers is different from that of sericine and its centestimal formula is C H N O whereas the centesimal formula of the composition of fibroin which is different, but very similar, IS C15H23N5O5.
  • the molecular groups forming the inner sericine layer C are intimately associated with the fibroin groups during the secretion of the silk by the silk Worm Bombyx Mari.
  • the paste thus obtained which does not as yet form a. thread receives in succession the sericine layers B and A.
  • the globular structure of the layers A and B is highly sensitive to the action of hot alkaline solutions whereas the macromolecular structure of the fibroin protects the latter against such an action provided the pH of the solution is not too high, which would lead to a destruction of the fibroin.
  • composition incorporates according to our invention a large percentage of sodium oleate, whether pulverulent, granular in admixture with other components or otherwise.
  • An auxiliary feature of our invention consists in incorporating with said component in addition to the sodium oleate sodium hexametaphosphate together with sodium carbonate and/or possibly sodium phosphate or the like alkaline products.
  • the percentages by weight of the components of our composition may be as follows:
  • FIG. 1 already referred to is, on a considerably enlarged scale, a cross-section of a thread of natural silk showing the layers of sericine enclosing the inner fibroin.
  • FIG. 2 is a chart illustrating the modifications in the pH during a treatment resorting to our improved composition for the simultaneous scouring and dyeing procedure according to our prior above-mentioned application.
  • Our novel composition is constituted by the abovementioned components the percentages by weight of which are substantially those defined hereinabove, said components being commonly sold in trade, generally in a pulverulent or granular condition.
  • Said composition is prepared in one or more vats, preferably of stainless steel so as to prevent corrosion, a mixer provided with stirring means and a crusher.
  • the first step consists in crushing carefully and separately the sodium carbonate or the like alkaline product and the sodium hexametaphosphate so as to cut out agglomerates.
  • a suitable amount of sodium oleate is then poured into the mixer which is provided with energetic stirring means after which the crushed sodium carbonate and hexametaphosphate are poured into the mixer in bulk in any desired sequence.
  • the three components are mixed together very intimately in the mixer which is provided for this purpose with a cover so as to prevent any scattering and volatilisatio'nof the components.
  • the time required for mixing purposes may vary according to the amounts to be mixed and also to the rotary speed of the mixer without any definite value being prescribed.
  • Said product may serve advantageously in the execution of the simultaneous scouring and dyeing method accordilng to our prior above-mentioned application.
  • the treating bath should contain 5 to 6% by weight of the product constituted in accordance with our present invention, with reference to the weight of the silk to be treated in accordance with our said prior application.
  • the chart of FIG. 2 illustrates the modifications in the pI-Iwhen our novel composition is used.
  • the values of the pH are given out as ordinates and the durations of treatment as abscissae.
  • the value of the pH at the start is raised by the alkaline nature of the composition according to the present invention, which ensures regularity in the progression of the treatment as shown by the graph.
  • a sudden large drop in the pH value is obtained at a predetermined moment so as to stop the scouring operation.
  • Our improved composition may also serve advantageously for the removal of greasing oils and of the impurities carried by all. fibres, whether animal, vegetable, mineral or synthetic.
  • the scouring of such fibres is executed in baths carrying about 2 gr. of the composition per litre of water.
  • the baths are used at a temperature of 60 to 80 C. depending on the fibre.
  • the scouring treatment should last from 20 to 30 minutes or thereabouts.
  • a composition for degumming natural silk fibers and for scouring textile fibers which consists essentially of sodium oleate, in combination with substantially an equal amount by weight of a mixture of a minor portion by weight of sodium hexametaphosphate and a major portion by Weight of an alkaline material selected from the group consisting of sodium carbonate, and alkaline materials having an alkalinity equivalent to that of sodium carbomate.
  • composition according to claim 1 which consists essentially of by weight 50% of sodium oleate, 35% of the alkaline material and 15% of sodium hexametaphos- .phate.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Animal Husbandry (AREA)
  • Molecular Biology (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Textile Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Cosmetics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
US796A 1969-08-01 1970-01-15 Composition for scouring natural silk and textile fibres Expired - Lifetime US3664805A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6926402A FR2055848A5 (ja) 1969-08-01 1969-08-01

Publications (1)

Publication Number Publication Date
US3664805A true US3664805A (en) 1972-05-23

Family

ID=9038440

Family Applications (1)

Application Number Title Priority Date Filing Date
US796A Expired - Lifetime US3664805A (en) 1969-08-01 1970-01-15 Composition for scouring natural silk and textile fibres

Country Status (5)

Country Link
US (1) US3664805A (ja)
CH (2) CH1762769A4 (ja)
DE (1) DE2001152B2 (ja)
FR (1) FR2055848A5 (ja)
GB (1) GB1278707A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108797111A (zh) * 2018-07-03 2018-11-13 长兴煤山掌珠丝绸厂 一种丝绸生产用精炼剂

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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
FR2592407B1 (fr) * 1985-12-30 1988-07-29 Gruzinsky Inst Textilnoi Pro Procede d'assouplissage de tissus de soie naturelle et tissus de soie naturelle obtenus par ledit procede.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108797111A (zh) * 2018-07-03 2018-11-13 长兴煤山掌珠丝绸厂 一种丝绸生产用精炼剂

Also Published As

Publication number Publication date
DE2001152B2 (de) 1977-12-29
FR2055848A5 (ja) 1971-05-14
DE2001152A1 (de) 1971-02-11
CH1762769A4 (ja) 1974-12-31
CH562335A (ja) 1975-05-30
GB1278707A (en) 1972-06-21

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