CA1113204A - Process for the dyeing or printing of polyester fibers - Google Patents
Process for the dyeing or printing of polyester fibersInfo
- Publication number
- CA1113204A CA1113204A CA288,372A CA288372A CA1113204A CA 1113204 A CA1113204 A CA 1113204A CA 288372 A CA288372 A CA 288372A CA 1113204 A CA1113204 A CA 1113204A
- Authority
- CA
- Canada
- Prior art keywords
- methylene chloride
- dyestuffs
- padding
- printing
- dwell
- 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
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- Coloring (AREA)
Abstract
HOE 77/F 055k PROCESS FOR THE DYEING OR PRINTING OF POLYESTER FIBERS
Abstract of the disclosure:
In the process for the padding or printing of materials consisting of, or containing, polyester or polyamide fibers or filaments, wherein aqueous baths or printing pastes of disper-sion dyestuffs are applied in common manner onto the materials and the dyestuffs are fixed with methylene chloride, the im-provement of the fixation of the dyestuffs with methylene chloride, which comprises effecting the application of the methy-lene chloride by condensing or by spraying, foaming, padding or by applying with rollers or brushes on the padded or printed and optionally dried material and subsequently allowing the material to dwell..
Abstract of the disclosure:
In the process for the padding or printing of materials consisting of, or containing, polyester or polyamide fibers or filaments, wherein aqueous baths or printing pastes of disper-sion dyestuffs are applied in common manner onto the materials and the dyestuffs are fixed with methylene chloride, the im-provement of the fixation of the dyestuffs with methylene chloride, which comprises effecting the application of the methy-lene chloride by condensing or by spraying, foaming, padding or by applying with rollers or brushes on the padded or printed and optionally dried material and subsequently allowing the material to dwell..
Description
~3%~)4 The present invention relates to a process for the dyeing or printing of polyester fibers.
From DT-AS No. 24 33 662 a process for the dyeing and finishing of textile materials has already been known, in which the textile goods impregnated with dyestuff are exposed to methylene chloride. This process is characterized in that for the dyeing and finishing of textile goods of polyester fibers, the dyestuff and/or the application agent are applied in an aqueous solution or disper-sion onto the textile goods, which are then exposed to an air current enriched with methylene chloride. The advantage of this method is to be seen in a dyeing process at room temperature up to a maximum temperature of 30C under atmospheric pressure. In this process, only gaseous me1:hylene chloride is used, which invo]ves certain problems, however, with regard to the toxicity of methylene chloride. According to the state of the art, a relatively long dwelling time is partly required in the after-treatment.
According to the invention, in a process for the padding or printing of materials consisting of, or containing, polyester or polyamide fibers or filaments, wherein aqueous baths or printing pastes of dispersion dyestuffs are applied in common manner onto the materials and the dyestuffs are fixed with methylene chloride, the improvement of fixing the dyestuffs with methylene chloride by effecting the application of the methylene chloride by condensing or by spraying, foaming, padding or by applying with rollers or brushes on the padded or printed and optionally dried material, and subsequently allowing the material to dwell for a period sufficient to fix the dyestuffs.
As compared with the known process described above, the process of the invention requires a markedly shorter dwelling ~L1132~4 time in th~ methylene chloride phase and results at the same time in an improved recovery of the methylene chloride used.
E~esides, the novel process permits to dye or print not only polyester fibers, but also polyamide fibers, each also in 5 admixture with other fibers.
In accordance with the process, all water-insoluble dis-persion dyestuffs, optionally in admixture with one another, may be used. The dyestuffs of this kind originate for exampie from the series of the azo, anthraquinone, quinophthalone or benzothioxanthene dyestuffs, the azo dyestuffs optionally being used in a metallized as well as in a metal-free form.
Dyestuffs of the above-mentioned categories have been suf-ficiently known and have been described in COLOUR I~DEX, third edition (1971), volume 2 under the classification of "Disperse Dyes".
- ,,,; .
The polyester fibers dyed or printed by way of the pro-cess according to the invention may for example consist of the following polyesters: Polyethylene terephthalate, poly-cyclohexane-dimétpylene terephthalate, heterogen~ous polyesters, for example those of terephthalic acid, isophthalic acid and ethylene glycol, or those of sulfo-isophthalic acid and ethylene glycol, furthermore, copolyether esters of p-oxybenzoic acid, terephthalic acid and ethylene glycol, as well as poly-; carbonates. According to the process of the invention it is possible to dye or print also those polyester fibers which may be dyed at boiling temperature wi~hout carriers.
Polyester fibers of this kind are obtained~for example, by in-corporating aliphatic dicarboxylic acids, for example, poly-J butylene terephthalate.
- , ~ , ': '~ . ; ~ , .
,:
~1~3Z~4 HOE 77/F 0554 The process of the invention is also suitable for the d~eing or prin~ing of synthetic polyamide fiber materials.
This fiber material has been sufficiently known to the man skilled in the art.
The dwelling temperatures are normally about 10 to 20C
below the hoiling point of methylene chloride, however, in units that have been designed correspondingly they may also reach the boiling point or be above this point.
Normally, room temperature is applied, but tempe~atures of 0C or less than OC are also possible.
The process of the invention may also be designed in a way that for the dwelling period sheets are inserted between the material parts lying on top of one another. These sheets may be permeable or impermeable for methylene ch]oride. They are merely to preven~ a smudging from one material to another, which is especially important in the case of multi-color efects or prints.
It has indeed already been known from the state of the art mentioned abo~e that for the dyeing and finishing of textile material of polyester fibers, the textile goods are eY.posed to an air current enriched with methylene chloride following the impregnation with the aqueous dyestuff solution or dispersion. However, it could not have been gathered from this teaching that the process of the invention would be successful. For it was indeed to be expected that the conden-sation of methylene chloride on the material or the moistening of the material with methylene chloride would lead to a bleeding of the dyestuffs and thus to an uneven material, the more so as 29 (1) the condensation is not effected evenly in all pl3ces, due ~o ~ 4 --.
.
.
:~ . ~ . '. ' . .
lHOE 77/E' 0551<
~32~4 the irregularities generally contained in the material (for example, an uneven thickness of the thread), or
From DT-AS No. 24 33 662 a process for the dyeing and finishing of textile materials has already been known, in which the textile goods impregnated with dyestuff are exposed to methylene chloride. This process is characterized in that for the dyeing and finishing of textile goods of polyester fibers, the dyestuff and/or the application agent are applied in an aqueous solution or disper-sion onto the textile goods, which are then exposed to an air current enriched with methylene chloride. The advantage of this method is to be seen in a dyeing process at room temperature up to a maximum temperature of 30C under atmospheric pressure. In this process, only gaseous me1:hylene chloride is used, which invo]ves certain problems, however, with regard to the toxicity of methylene chloride. According to the state of the art, a relatively long dwelling time is partly required in the after-treatment.
According to the invention, in a process for the padding or printing of materials consisting of, or containing, polyester or polyamide fibers or filaments, wherein aqueous baths or printing pastes of dispersion dyestuffs are applied in common manner onto the materials and the dyestuffs are fixed with methylene chloride, the improvement of fixing the dyestuffs with methylene chloride by effecting the application of the methylene chloride by condensing or by spraying, foaming, padding or by applying with rollers or brushes on the padded or printed and optionally dried material, and subsequently allowing the material to dwell for a period sufficient to fix the dyestuffs.
As compared with the known process described above, the process of the invention requires a markedly shorter dwelling ~L1132~4 time in th~ methylene chloride phase and results at the same time in an improved recovery of the methylene chloride used.
E~esides, the novel process permits to dye or print not only polyester fibers, but also polyamide fibers, each also in 5 admixture with other fibers.
In accordance with the process, all water-insoluble dis-persion dyestuffs, optionally in admixture with one another, may be used. The dyestuffs of this kind originate for exampie from the series of the azo, anthraquinone, quinophthalone or benzothioxanthene dyestuffs, the azo dyestuffs optionally being used in a metallized as well as in a metal-free form.
Dyestuffs of the above-mentioned categories have been suf-ficiently known and have been described in COLOUR I~DEX, third edition (1971), volume 2 under the classification of "Disperse Dyes".
- ,,,; .
The polyester fibers dyed or printed by way of the pro-cess according to the invention may for example consist of the following polyesters: Polyethylene terephthalate, poly-cyclohexane-dimétpylene terephthalate, heterogen~ous polyesters, for example those of terephthalic acid, isophthalic acid and ethylene glycol, or those of sulfo-isophthalic acid and ethylene glycol, furthermore, copolyether esters of p-oxybenzoic acid, terephthalic acid and ethylene glycol, as well as poly-; carbonates. According to the process of the invention it is possible to dye or print also those polyester fibers which may be dyed at boiling temperature wi~hout carriers.
Polyester fibers of this kind are obtained~for example, by in-corporating aliphatic dicarboxylic acids, for example, poly-J butylene terephthalate.
- , ~ , ': '~ . ; ~ , .
,:
~1~3Z~4 HOE 77/F 0554 The process of the invention is also suitable for the d~eing or prin~ing of synthetic polyamide fiber materials.
This fiber material has been sufficiently known to the man skilled in the art.
The dwelling temperatures are normally about 10 to 20C
below the hoiling point of methylene chloride, however, in units that have been designed correspondingly they may also reach the boiling point or be above this point.
Normally, room temperature is applied, but tempe~atures of 0C or less than OC are also possible.
The process of the invention may also be designed in a way that for the dwelling period sheets are inserted between the material parts lying on top of one another. These sheets may be permeable or impermeable for methylene ch]oride. They are merely to preven~ a smudging from one material to another, which is especially important in the case of multi-color efects or prints.
It has indeed already been known from the state of the art mentioned abo~e that for the dyeing and finishing of textile material of polyester fibers, the textile goods are eY.posed to an air current enriched with methylene chloride following the impregnation with the aqueous dyestuff solution or dispersion. However, it could not have been gathered from this teaching that the process of the invention would be successful. For it was indeed to be expected that the conden-sation of methylene chloride on the material or the moistening of the material with methylene chloride would lead to a bleeding of the dyestuffs and thus to an uneven material, the more so as 29 (1) the condensation is not effected evenly in all pl3ces, due ~o ~ 4 --.
.
.
:~ . ~ . '. ' . .
lHOE 77/E' 0551<
~32~4 the irregularities generally contained in the material (for example, an uneven thickness of the thread), or
(2) due to the additional moistening process an uneven bleeding was to be expected.
The process step for effecting the dyestuff fixation by con-densing methylene chloride on the fibrous material may be carried out according to various methods. The material which has been padded or printed at a temperature as low as possible and which has optionally been dried is preferahly guided through a chamber having a temperature in the range of from 41 to 42 C and being filled with methylene chloride vapor, in which process the condensation is effected. me winding-up and dwelling processes may be effected in the same chamber, however, they may also take place outside the condensation chamber at any time. The dwelling may also take place discontinuously or continuously by cuttling up the material, for example, in screen belt conveying units, instead of windingit up. The dwelling may besides be effec~ed in a different manner, for example, in festoon dwelling units.
Also if the,process step for effecting the dyestuff fixa-tion with methylene chloride is performed by spraying, foamihg~
padding or applying with rollers or brushes, the winding up and the dwelling processes may be effected within or outside a cham-ber, and the dwelling may also occur discontinuously or continu-ously by cuttling up the material, for example, in screen belt 2~ conveying unIts, instead of winding it up; and the dwelling may, moreover, also be effected in a different manner, for example~
in festoon dwelling units.
The time required for the condensation of the methylene 29 chloride may vary within wide limits. Generally, a period of from _ 5 --.
.
~3~4 HOE 77/F 055~
10 seconds to 5 minutes, preferably from 45 seconds to 2 min-utes, is re~uired.
It was a surprising fact that with condcnsation periods that are partly as short as 30 to 60 seconds, methylene chloride is condensed on the material in such an amount that the fix-ation of the dyestuffs is ensured.
The padding liquors or printing pastes to be applied in the process of the invention have been sufficiently known, and the padding and printing processes are also carried out in accordance with known methods. In the case of mixed fabrics, the single-bath and the two-bath continuous and aiscontin-uous processes may be applied, as they are common for mixedrnaterials of this kind. The dyestuffs to be used for the re-spective accompanying fiber are known to the expert. Thus, for example, the following process falls within the scope o~
the invention:
A flat textile material of polyester and cellulose is padded with an ~queous bath which contains the dispersion dye-stuff, the rea'ct~ve dyestuff, alkali and, optionally, a dis-persing agent, wetting agent, an electrolyte and/or athickening agent, afterwards the condensation of methylene chloride onto the cold material is effected within one minute in a chamber filled with methylene chloride vapor, then the material is wound into a skein which is then allowed to dwell over night, for example, while being turned slowly. After rinsing, soaping and drying, a textile material is obtained which shows excellent properties.
Whereas in the printing process the material is preferably J 29 dried intermediately, this additional process step is generally ' ' ' ' :
.
, ., ... ~ . - . .
.
HOE 77/F 055 k ~ ~ 3 Z~ 4 not necessary in the dyeing process. The aftPr-treatment -- if necessary - is also effected according to common methods.
Furthermore, it was a surprising fact which could not have been foreseen that according to the process of the inven-tion a considerably greater number of dispersion dyestuffsare suitable for the dyeing of polyester fibers than can be used according to the above-mentioned process which belongs to the state of the art.
When the methylene chloride is applied by spraying, foam-ing or padding or by means of rollers or brushes, the methy-lene chloride is preferably applied by padding or applying with rollers, for example, by slop-padding. According to this process, dyeings are obtained which are equal or even superior to more expensive processes with regard to the apparatuses and the energy required, for example the thermosoling or the high-temperature processes' as far as the dyestuff utilization and/or the color depth and ~astness properties are concerned.
The process and/or the apparatuses for spraying, sprinkling, foaming, pa*din~, applying by means of rollers or brushing, which are required for the application of the methylene chlor-ide, have also been sufficiently known and have been previously described in li~erature.
The following Examples serve to illustrate the present invention.
E X A M P L E 1:
A fabric of texturized polyester fibers is padded on a padder at room temperature with a liquor pick-up of 90 %, with an aqueous bath which contains per liter 20 g of the blue 2~ dyestuff of the ~ormula .
:... . . . . . . . . . . . . .
, . , . . . . ,- . : . ..
: . . . . . .
-.':' . '. '' ` '. '` ' .: : ' '. ' ` :
. , , . .
1113Z~4 HOE 77/F 055~
Br H2 o OH
and 1 g of a commercial wetting agent. Subsequently, the wet padding is guided during 1 minute at 41C through a chamber filled with methylene chloride vapor. When the condensation has been completed, the material is wound up. Then the latter is allowed to dwell for 3 hours in a closed vessel or in a sheet which is impermeable for methylene chloride, after-wards it is after-treated in common manner. The bIue dyeing obtained shows the fastness properties which are characteristic Of the dyestuff used.
Similar good results are,obtained, if instead of the above-specified dyestuff"there are used 20 g per liter each of the dyestuffs of the following formulae and the process is otherwise carried'out as has been described above:
~L co ~3 (yellow:dyesti:)
The process step for effecting the dyestuff fixation by con-densing methylene chloride on the fibrous material may be carried out according to various methods. The material which has been padded or printed at a temperature as low as possible and which has optionally been dried is preferahly guided through a chamber having a temperature in the range of from 41 to 42 C and being filled with methylene chloride vapor, in which process the condensation is effected. me winding-up and dwelling processes may be effected in the same chamber, however, they may also take place outside the condensation chamber at any time. The dwelling may also take place discontinuously or continuously by cuttling up the material, for example, in screen belt conveying units, instead of windingit up. The dwelling may besides be effec~ed in a different manner, for example, in festoon dwelling units.
Also if the,process step for effecting the dyestuff fixa-tion with methylene chloride is performed by spraying, foamihg~
padding or applying with rollers or brushes, the winding up and the dwelling processes may be effected within or outside a cham-ber, and the dwelling may also occur discontinuously or continu-ously by cuttling up the material, for example, in screen belt 2~ conveying unIts, instead of winding it up; and the dwelling may, moreover, also be effected in a different manner, for example~
in festoon dwelling units.
The time required for the condensation of the methylene 29 chloride may vary within wide limits. Generally, a period of from _ 5 --.
.
~3~4 HOE 77/F 055~
10 seconds to 5 minutes, preferably from 45 seconds to 2 min-utes, is re~uired.
It was a surprising fact that with condcnsation periods that are partly as short as 30 to 60 seconds, methylene chloride is condensed on the material in such an amount that the fix-ation of the dyestuffs is ensured.
The padding liquors or printing pastes to be applied in the process of the invention have been sufficiently known, and the padding and printing processes are also carried out in accordance with known methods. In the case of mixed fabrics, the single-bath and the two-bath continuous and aiscontin-uous processes may be applied, as they are common for mixedrnaterials of this kind. The dyestuffs to be used for the re-spective accompanying fiber are known to the expert. Thus, for example, the following process falls within the scope o~
the invention:
A flat textile material of polyester and cellulose is padded with an ~queous bath which contains the dispersion dye-stuff, the rea'ct~ve dyestuff, alkali and, optionally, a dis-persing agent, wetting agent, an electrolyte and/or athickening agent, afterwards the condensation of methylene chloride onto the cold material is effected within one minute in a chamber filled with methylene chloride vapor, then the material is wound into a skein which is then allowed to dwell over night, for example, while being turned slowly. After rinsing, soaping and drying, a textile material is obtained which shows excellent properties.
Whereas in the printing process the material is preferably J 29 dried intermediately, this additional process step is generally ' ' ' ' :
.
, ., ... ~ . - . .
.
HOE 77/F 055 k ~ ~ 3 Z~ 4 not necessary in the dyeing process. The aftPr-treatment -- if necessary - is also effected according to common methods.
Furthermore, it was a surprising fact which could not have been foreseen that according to the process of the inven-tion a considerably greater number of dispersion dyestuffsare suitable for the dyeing of polyester fibers than can be used according to the above-mentioned process which belongs to the state of the art.
When the methylene chloride is applied by spraying, foam-ing or padding or by means of rollers or brushes, the methy-lene chloride is preferably applied by padding or applying with rollers, for example, by slop-padding. According to this process, dyeings are obtained which are equal or even superior to more expensive processes with regard to the apparatuses and the energy required, for example the thermosoling or the high-temperature processes' as far as the dyestuff utilization and/or the color depth and ~astness properties are concerned.
The process and/or the apparatuses for spraying, sprinkling, foaming, pa*din~, applying by means of rollers or brushing, which are required for the application of the methylene chlor-ide, have also been sufficiently known and have been previously described in li~erature.
The following Examples serve to illustrate the present invention.
E X A M P L E 1:
A fabric of texturized polyester fibers is padded on a padder at room temperature with a liquor pick-up of 90 %, with an aqueous bath which contains per liter 20 g of the blue 2~ dyestuff of the ~ormula .
:... . . . . . . . . . . . . .
, . , . . . . ,- . : . ..
: . . . . . .
-.':' . '. '' ` '. '` ' .: : ' '. ' ` :
. , , . .
1113Z~4 HOE 77/F 055~
Br H2 o OH
and 1 g of a commercial wetting agent. Subsequently, the wet padding is guided during 1 minute at 41C through a chamber filled with methylene chloride vapor. When the condensation has been completed, the material is wound up. Then the latter is allowed to dwell for 3 hours in a closed vessel or in a sheet which is impermeable for methylene chloride, after-wards it is after-treated in common manner. The bIue dyeing obtained shows the fastness properties which are characteristic Of the dyestuff used.
Similar good results are,obtained, if instead of the above-specified dyestuff"there are used 20 g per liter each of the dyestuffs of the following formulae and the process is otherwise carried'out as has been described above:
~L co ~3 (yellow:dyesti:)
3) ~ ~ ~
~6 ~ -(CH2)30CH3 : (Yellow eyestu~ :
: - 8 -.~ ' . .
,:
: :f HOE 77/F 05-~
~113Z~4 ., N,~2 ~E~ .
~6 ~ -(CH2)30CH3 : (Yellow eyestu~ :
: - 8 -.~ ' . .
,:
: :f HOE 77/F 05-~
~113Z~4 ., N,~2 ~E~ .
4) 2 ~ NH-N=C ~ OH ~Orange dy~t~f) ~~
CN
CN
5) O2N ~ N=N ~ / C2H4OH (Red dyestuff) CH2-C=CH2 Br Cl
6) . ~ -(Orange dyestuffl - ' :
CN
O~N ~ N=N ~ N ~ 4 9 (Blue dyestuff) CN ,~3 C2H4OCOCH3 -:
. -- .
~ N~ N=N ~ ~ CH2-CH2 ~ Violet dyest~
.
' ' E X A M P L E 9: ~ .
I A fabric of texturized polyester fibers is padded on a ¦ padder at room temperature with a liquor pick-up of 90 %, with an aqueous bath which contains per liter 20 g of a yellow dye-¦ stuff of the formula ,~
-. ~ . - - ~ :
.
: . , - ~ ~ . . .
,.,: . ~ ~ . .
~113Z~4 HOE 7 7 /F 0 5 5 4 <~ 2 Z CH2 OCH3 and 1 g of a commercial wettinq agent~ Subsequently, the wet padding is slop-padded with methylene chloride and is wound up.
Then the wound-up material is allowed to dwell at room tempera-ture for 3 hours, while being covered for example with a PVC
sheet, the skein being turned slowly.
Following a common after-treatment a yellow dyeing is ob-tained which shows fastness properties of a quality as has otherwise only been possible according to the thermosoling or high-temperature dyeing processes.
Similar good results are obtained, if instead of the aboYe-specified dyest;uff there are used 20 g each of the dye-stuffs of the foliowing formulae and the process is carried out otherwise as,has,been d~scribed above:
Br 2~ ~ CO ~ (Yellow dyestuff) 3) ~ICH2~30C~3 (Yellow ~yes~uff) j: NO2 OH - -- -4~ O2N ~ NH-N=C ~ OH
(Orange dyestuff) . .................................... , -, :.
-- . ... . .: . ~ . .:
- ; , .. . .
HOE 77/F _ 055l~
1113Z~4 "
CN
,~ ~C2HqO~ ~Red dyestuff) 5) 02~/ \~ N=N ~;3_N~
CH2-f =CH2 Br 6) OzN~N=W ~ (Orange dyestuff) CN
2 ~ N=N ~ C H
8) 2~C-- N-N ~3 C!12-C~12 ~Violet dyestuf f ) .i .
,::. . . :
:
~'" . , ~: , '. '' '' ' . ' .
: . . . .
. . -.:: ~ -: :: . : :~ . .
CN
O~N ~ N=N ~ N ~ 4 9 (Blue dyestuff) CN ,~3 C2H4OCOCH3 -:
. -- .
~ N~ N=N ~ ~ CH2-CH2 ~ Violet dyest~
.
' ' E X A M P L E 9: ~ .
I A fabric of texturized polyester fibers is padded on a ¦ padder at room temperature with a liquor pick-up of 90 %, with an aqueous bath which contains per liter 20 g of a yellow dye-¦ stuff of the formula ,~
-. ~ . - - ~ :
.
: . , - ~ ~ . . .
,.,: . ~ ~ . .
~113Z~4 HOE 7 7 /F 0 5 5 4 <~ 2 Z CH2 OCH3 and 1 g of a commercial wettinq agent~ Subsequently, the wet padding is slop-padded with methylene chloride and is wound up.
Then the wound-up material is allowed to dwell at room tempera-ture for 3 hours, while being covered for example with a PVC
sheet, the skein being turned slowly.
Following a common after-treatment a yellow dyeing is ob-tained which shows fastness properties of a quality as has otherwise only been possible according to the thermosoling or high-temperature dyeing processes.
Similar good results are obtained, if instead of the aboYe-specified dyest;uff there are used 20 g each of the dye-stuffs of the foliowing formulae and the process is carried out otherwise as,has,been d~scribed above:
Br 2~ ~ CO ~ (Yellow dyestuff) 3) ~ICH2~30C~3 (Yellow ~yes~uff) j: NO2 OH - -- -4~ O2N ~ NH-N=C ~ OH
(Orange dyestuff) . .................................... , -, :.
-- . ... . .: . ~ . .:
- ; , .. . .
HOE 77/F _ 055l~
1113Z~4 "
CN
,~ ~C2HqO~ ~Red dyestuff) 5) 02~/ \~ N=N ~;3_N~
CH2-f =CH2 Br 6) OzN~N=W ~ (Orange dyestuff) CN
2 ~ N=N ~ C H
8) 2~C-- N-N ~3 C!12-C~12 ~Violet dyestuf f ) .i .
,::. . . :
:
~'" . , ~: , '. '' '' ' . ' .
: . . . .
. . -.:: ~ -: :: . : :~ . .
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In the process for the padding or printing of materials consisting of, or containing, polyester or polyamide fibers or filaments, wherein aqueous baths or printing pastes of dispersion dyestuffs are applied in common manner onto the materials and the dyestuffs are fixed with methylene chloride, the improvement of fixing the dyestuffs with methylene chloride by effecting the application of the methylene chloride by condensing or by spraying, foaming, padding or by applying with rollers or brushes on the padded or printed and optionally dried material, and subsequently allowing the material to dwell for a period sufficient to fix the dyestuffs.
2. Process as claimed in claim 1 which comprises guiding the fibrous material for a period of from 10 seconds to 5 minutes through a chamber which is at a temperature in the range of from 41 to 42°C and which is filled with methylene chloride vapor to effect the condensation.
3. Process as claimed in claim 1 which comprises guiding the padded and optionally dried fibrous material into a chamber, effecting condensation of methylene chloride therein, winding up the material, allowing it to dwell and subsequently removing it from the chamber.
4. Process as claimed in claim 1 which comprises allowing the fibrous material to dwell with an intermediate layer of sheet.
5. Process as claimed in claim 1 which comprises introducing the fibrous material into a chamber following the application of the methylene chloride by padding or applying with rollers, then winding it up and allowing it to dwell therein.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2645687.1 | 1976-10-09 | ||
| DE2645685 | 1976-10-09 | ||
| DE2645687 | 1976-10-09 | ||
| DEP2645685.9 | 1976-10-09 | ||
| DEP2712195.5 | 1977-03-19 | ||
| DEP2712196.6 | 1977-03-19 | ||
| DE19772712195 DE2712195C3 (en) | 1977-03-19 | 1977-03-19 | Process for dyeing material which consists of or contains polyester or polyamide fibers or threads |
| DE19772712196 DE2712196C3 (en) | 1977-03-19 | 1977-03-19 | Process for dyeing materials which consist of or contain polyester or polyamide fibers or threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1113204A true CA1113204A (en) | 1981-12-01 |
Family
ID=27432147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA288,372A Expired CA1113204A (en) | 1976-10-09 | 1977-10-07 | Process for the dyeing or printing of polyester fibers |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1113204A (en) |
-
1977
- 1977-10-07 CA CA288,372A patent/CA1113204A/en not_active Expired
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