US2347143A - Dyeing of textile fibers - Google Patents
Dyeing of textile fibers Download PDFInfo
- Publication number
- US2347143A US2347143A US445220A US44522042A US2347143A US 2347143 A US2347143 A US 2347143A US 445220 A US445220 A US 445220A US 44522042 A US44522042 A US 44522042A US 2347143 A US2347143 A US 2347143A
- Authority
- US
- United States
- Prior art keywords
- nylon
- dyeing
- textile fibers
- centigrade
- water
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/20—Physical treatments affecting dyeing, e.g. ultrasonic or electric
- D06P5/2066—Thermic treatments of textile materials
- D06P5/2072—Thermic treatments of textile materials before dyeing
Definitions
- This invention relates to an improvement in the dyeing oi textile fibers and in particular to the dyeing of nylon.
- Th increase in afllnity of nylon by the process according to this invention is not deleteriously aflected by the presence of a small proportion of acid or alkali during the heating. Generally speaking, when the process is carried out at a higher temperature the same result can be obtained in a shorter time.
- Example 1 Nylon yarn is treated in an autoclave with water at 150 centigrade for one hour, the pressure inside the autoclave being about lbs. per square inch. It is then dyed at 90 centigrade for one hour in a bath containing 1 per cent of Chlorazol Blue BS (index No. 406), 5 percent of per cent acetic acid and 2 per cent of the material sold under the registered trademark Calgon T (the essential basis 0! which is alkali metaphosphate), 50 parts of the bath be ing used for each part of nylon yarn. The dyebath is practically exhausted and a medium heavy blue shade obtained, whereas without such pretreatment or the nylon yarn. dyeing under similar conditions produces a pale sky blu shade, with an exhaustion of only about 25 per cent.
- Chlorazol Blue BS index No. 406
- Calgon T the essential basis 0! which is alkali metaphosphate
- Example 2 Nylon yarn is treated in an autoclave with water at 130 centigrade at a pressure of 25 lbs. per square inch for one hour, and then dyed as described in the foregoing Example 1. 75 per cent exhaustion of the dyebath is obtained.
- a process for improving the aillnity of nylon for direct cotton dyestufls, acetate dyestuffs and acid dyestuffs which comprises treating the nylon with water in the liquid state under pressure and at a temperature above centigrade.
- a process for improving the aflinity of nylon for direct cotton dyestuil's, acetate dyestufis and acid dyestuil's which comprises treating the nylon with water in the liquid state under a pressure of 55 lbs. per square inch and at a temperature of 150 centlgrade.
- a process for dyeing nylon which comprises treating the nylon with water in the liquid state under pressure and at a temperature above 100 centigrade and then applying to the treated material a dyestuii selected irom the group consisting oi. direct cotton dyestuils, acetate dyestufis and acid dyestufls.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coloring (AREA)
Description
Patented Apr. 18, 1944 DYEING F TEXTILE FIBERS Cllflord Collier Wilcock, Balford, England, as-
signor to Conrtaulds Limited, London, England,
a British company No Drawing. Application May 30, 1942, Serial No. 445,220. In Great Britain 1111! 17, 1941 4 Claims.
This invention relates to an improvement in the dyeing oi textile fibers and in particular to the dyeing of nylon.
I have found that the afilnity of nylon for certain dyes, and in particular for direct cotton dyestuffs, which normally are not readily taken up by nylon, can be considerably increased by treating the nylon with water, in the liquid state under pressure, at temperatures above 100 centigrade. The extent oi the increase in ailinity depends on the temperature employed and appears to attain its maximum at about 150 centigrade at which temperature boiling water exerts a pressure of about 55 lbs. per square inch.
Th increase in afllnity of nylon by the process according to this invention is not deleteriously aflected by the presence of a small proportion of acid or alkali during the heating. Generally speaking, when the process is carried out at a higher temperature the same result can be obtained in a shorter time.
With acetate and acid dyestufis the effect of the treatment of nylon according to this invention is to give the fiber a better afllnity for these dyestufls at lower temperatures than it previously possessed.
The following examples will serve to illustrate the nature of this invention, which, however, is not limited to these examples.
Example 1 Nylon yarn is treated in an autoclave with water at 150 centigrade for one hour, the pressure inside the autoclave being about lbs. per square inch. It is then dyed at 90 centigrade for one hour in a bath containing 1 per cent of Chlorazol Blue BS (index No. 406), 5 percent of per cent acetic acid and 2 per cent of the material sold under the registered trademark Calgon T (the essential basis 0! which is alkali metaphosphate), 50 parts of the bath be ing used for each part of nylon yarn. The dyebath is practically exhausted and a medium heavy blue shade obtained, whereas without such pretreatment or the nylon yarn. dyeing under similar conditions produces a pale sky blu shade, with an exhaustion of only about 25 per cent.
Example 2 Nylon yarn is treated in an autoclave with water at 130 centigrade at a pressure of 25 lbs. per square inch for one hour, and then dyed as described in the foregoing Example 1. 75 per cent exhaustion of the dyebath is obtained.
What I claim is:
1. A process for improving the aillnity of nylon for direct cotton dyestufls, acetate dyestuffs and acid dyestuffs, which comprises treating the nylon with water in the liquid state under pressure and at a temperature above centigrade.
2. A process for improving the aflinity of nylon for direct cotton dyestuil's, acetate dyestufis and acid dyestuil's, which comprises treating the nylon with water in the liquid state under a pressure of 55 lbs. per square inch and at a temperature of 150 centlgrade.
3. A process for improving the affinity of nylon for direct cotton dyestuils. acetate dyestufl's and acid dyestuils, which comprises treating the nylon with water in the liquid state under a pressure of 25 lbs. per square inch and at a. temperature of centigrade.
4. A process for dyeing nylon which comprises treating the nylon with water in the liquid state under pressure and at a temperature above 100 centigrade and then applying to the treated material a dyestuii selected irom the group consisting oi. direct cotton dyestuils, acetate dyestufis and acid dyestufls.
CIJII'ORD COLLIER WILCOCK.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2347143X | 1941-07-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2347143A true US2347143A (en) | 1944-04-18 |
Family
ID=10904369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US445220A Expired - Lifetime US2347143A (en) | 1941-07-17 | 1942-05-30 | Dyeing of textile fibers |
Country Status (1)
Country | Link |
---|---|
US (1) | US2347143A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2458397A (en) * | 1943-11-18 | 1949-01-04 | Courtaulds Ltd | Dyeing of nylon fibers by treating with nitrogenous condensation products |
US3170912A (en) * | 1961-12-28 | 1965-02-23 | Gen Aniline & Film Corp | Azo dyestuffs containing a methylenesulfonylethanol radical or its sulfate ester |
US3197268A (en) * | 1962-05-25 | 1965-07-27 | Nopco Chem Co | Disperse dye dyeing of alkali alkali treated polyester-polyurethane foam products |
US3253875A (en) * | 1963-09-16 | 1966-05-31 | Allied Chem | Dyeing with anionic dyes of nylon skeins partially metal foil covered during moist heat treatment before dyeing |
-
1942
- 1942-05-30 US US445220A patent/US2347143A/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2458397A (en) * | 1943-11-18 | 1949-01-04 | Courtaulds Ltd | Dyeing of nylon fibers by treating with nitrogenous condensation products |
US3170912A (en) * | 1961-12-28 | 1965-02-23 | Gen Aniline & Film Corp | Azo dyestuffs containing a methylenesulfonylethanol radical or its sulfate ester |
US3197268A (en) * | 1962-05-25 | 1965-07-27 | Nopco Chem Co | Disperse dye dyeing of alkali alkali treated polyester-polyurethane foam products |
US3253875A (en) * | 1963-09-16 | 1966-05-31 | Allied Chem | Dyeing with anionic dyes of nylon skeins partially metal foil covered during moist heat treatment before dyeing |
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