US2481205A - Simultaneously scouring and bleaching wool - Google Patents

Simultaneously scouring and bleaching wool Download PDF

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Publication number
US2481205A
US2481205A US663636A US66363646A US2481205A US 2481205 A US2481205 A US 2481205A US 663636 A US663636 A US 663636A US 66363646 A US66363646 A US 66363646A US 2481205 A US2481205 A US 2481205A
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US
United States
Prior art keywords
wool
scouring
bowl
pounds
liquor
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
Application number
US663636A
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English (en)
Inventor
Dubeau Archie Louis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mathieson Chemical Corp
Olin Corp
Original Assignee
Olin Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Olin Corp filed Critical Olin Corp
Priority to US663636A priority Critical patent/US2481205A/en
Priority to GB26740/46A priority patent/GB616477A/en
Priority to FR933376D priority patent/FR933376A/fr
Application granted granted Critical
Publication of US2481205A publication Critical patent/US2481205A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • D06L4/20—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen
    • D06L4/22—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents
    • D06L4/24—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents using chlorites or chlorine dioxide

Definitions

  • This invention relates to improvements in the processing of wool including both shorn wool and pulled wool.
  • wool before utilization in the production of yarn is subjected to treatment in a series or train of five treating vessels known as bowls.
  • the wool In the first bowl of the train, the wool is desuinted by washing with cold water.
  • the desuinted wool is scoured, usually at a temperature of about 125 F., with an aqueous solution of soap and sodium carbonate.
  • the 4th and 5th bowls are essentially rinsing bowls, but the last bowl, from which the wool is passed to a dryer, may contain a bleaching agent, conventionally hydrogen peroxide.
  • the scouring solution is circulated through the wool and through the grease machine, the solution ordinarily being caused to flow from the No. 3 bowl to the No. 2 bowl, through the grease machine and then back to the No. 3 bowl.
  • the liquor was fortified every 45 minutes by-adding 36 gallons of soda ash solution containing 27.8 pounds of soda ash to the No. 2 bowl and by adding 18 gallons of soda ash solution containing 13.9 pounds of soda ash together with 12 gallons of soap solution containing 3.33 pounds of soap to the No. 3 bowl.
  • half of the scouring solution was withdrawn from both scouring bowls and the withdrawn solution replaced with water.
  • 90 gallons of soda ash solution containing 69.5 pounds of soda ash and 30 gallons of soap solution containing 0.277 pounds of soap per gallon were added to the No. 2 bowl, and 45 gallons of soda ash solution containing 34.6 pounds of soda ash and 30 gallons of soap solution were added to the No. 3 bowl.
  • alkalinity is calculated as due entirely to sodium carbonate and bicarbonate, it is to be understood that a relatively small part of the alkalinity may derive from other compounds formed during the scouring having a pI-I value similar to that of sodium bicarbonate.”
  • @llalinit'y carbonate is 5 calculated" by multiplying the cubic centimeters of acid to the phenolphthalein end point by 1.06,; alkalinity as sodium bicarbonate by subtracting twice the cubic centimeters of acidto the 'phenel phthalein end point from the cubic centimeters :n-
  • I clude; sodium h o ite. as: a cemmnent; f. t e 99 i uor, audr isor z 1t he,coinnosi-v 2o qutq h eiauon at h at o r ha sura 012:. amed; ro mu tin -yina he. ubic; centimeters. of .09 normal HCl required to reach the, phenoll thaiein ncllneint. hy. .-Qfi; o., he fi ure obtained xl lultihlyina ififi finee.
  • b0nti %. by .weight,oi available. chlor ne, t ll, higher; Concentrations of the chlorite may be used withoutidangerbr damag ing the wool, but withoutmaterially improved results. Generally satisfactory results are ob; tain'e'd'by t e'use'of the chlorite in concentraattempt to use a chlorite in the bleaching of wool has heretofore been discouraged by the fact that the desired characteristics of wool are destroyed or are at least adversely afiected by, treatment with chlgorine or with chlprine compounds, such asthe hypochlo'rit's which in use evolve chlorine.
  • the composition of the scouring liquor can be i"r 1ed-"wi-thin the prescribed limits on alkalinity, with advantage, through the contmuousxor intermittent introduction of controlled amdunts. of; aqueous; caustic soda. Less preferably, aqueous daustic potash or an aqueous solutionof, a l allg al i ne earth metal hydroxide, such as; calcium hydroxide may be introduced into stood; acts to convert egicess bicarbonate back to carbonate in accordance with the equation:
  • the alkaline solution is not, of course, addedfron'r the 'very beg-inning of the securingwhen theconc'entrationof bicarbonate-is negligible, in fact it i's advantageous in preparing theini-tial solutiontoadd bicarbonate.-
  • a preferredembodiment of my invention as-appl i ed te acid wool,- the caustic solution is company offli'quor'rmoved fromthe'bqwl rather than 'directlytc thefbowl
  • Thecaustic may becofn'e ee is1et 1y-reat'ee before it-enters the bowl. Direet addi tion offthe caustic solution to the bowl appears" disadvantageous as resulting -i' s i 'd?
  • the 9 19 1 to which the caustic-solutionis to be added is mi i bl i i rawe rom h W 9 tn n h'f a l asse I h re l h I a r u h r. nk. w'jer ef the caustic: solution charged to, the 'qt t and, he. a$ i $Q i9 t Q 1 WP L Q nfix, the gol-enterih ggend oi the bo wl.
  • the caustic, solution most K suitably I has a NaQI-I concentrae- ,i lissaar; iie im iio s' e PlW a-Wtih dv nt e rite at whmh ,the, caustic solution is added is i h neiarai r i r ati nwhi e es: trat'e'd by the following examples:
  • Theuwool is;fed .to.the..system at the rate of abQut; 1 2Q0:.-apounds: per'lhour.
  • the process can be Alkalinity Calculated aSNazCOz and NaHCOs 44566 ww ummwmnD-baun n say from 300 pounds of wool per hour to 600-700 pounds per hour and with noticeable improvement in the quality of the processed wool.
  • a continuous process for simultaneously scouring and bleaching wool which comprises continuously passing the wool to be treated in contact with an aqueous liquor containing soda ash, sodium bicarbonate, soap and sodium chlorite and maintaining the composition of the liquor such that the Weight ratio of apparent carbonate to bicarbonate is Within the range of method is definitely cheaper in both chemical at a constant high rate and because less changproduction can be achieved with same equip- Ohlorite Concentration (based on weight of available chlorine) Chlorite Concent-ration (based on Weight of available chlorine) operated to increase production more than 100%,
  • tion used consists of about 20 pounds sodium hydroxide in 50 gallons of water.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Husbandry (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Molecular Biology (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Detergent Compositions (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
US663636A 1946-04-19 1946-04-19 Simultaneously scouring and bleaching wool Expired - Lifetime US2481205A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US663636A US2481205A (en) 1946-04-19 1946-04-19 Simultaneously scouring and bleaching wool
GB26740/46A GB616477A (en) 1946-04-19 1946-09-05 Improvements in the processing of wool
FR933376D FR933376A (fr) 1946-04-19 1946-09-10 Procédé de traitement de la laine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US663636A US2481205A (en) 1946-04-19 1946-04-19 Simultaneously scouring and bleaching wool

Publications (1)

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US2481205A true US2481205A (en) 1949-09-06

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Country Status (3)

Country Link
US (1) US2481205A (fr)
FR (1) FR933376A (fr)
GB (1) GB616477A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552944A (en) * 1946-03-27 1951-05-15 Olin Mathieson Wool scouring

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69829195D1 (de) * 1997-09-26 2005-04-07 Canesis Network Ltd Verfahren und vorrichtung zur wesentlichen erhöhung der qualität von gewaschener wolle
TW201028024A (en) 2006-08-18 2010-07-16 Fujitsu Ltd Communication systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1254727A (en) * 1917-02-12 1918-01-29 Andrew Poulson Bleaching, scouring, and decorticating fabrics or fibrous matter.
US2183142A (en) * 1936-09-14 1939-12-12 American Chem Paint Co Method of cleaning wool
GB549678A (en) * 1941-05-21 1942-12-02 Bleacher S Ass Ltd Improvements in the treatment of materials consisting of or containing wool or other animal fibres to reduce their tendency to felt

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1254727A (en) * 1917-02-12 1918-01-29 Andrew Poulson Bleaching, scouring, and decorticating fabrics or fibrous matter.
US2183142A (en) * 1936-09-14 1939-12-12 American Chem Paint Co Method of cleaning wool
GB549678A (en) * 1941-05-21 1942-12-02 Bleacher S Ass Ltd Improvements in the treatment of materials consisting of or containing wool or other animal fibres to reduce their tendency to felt

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552944A (en) * 1946-03-27 1951-05-15 Olin Mathieson Wool scouring

Also Published As

Publication number Publication date
FR933376A (fr) 1948-04-19
GB616477A (en) 1949-01-21

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