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Additive composition for textile auxiliaries

A technology for textile auxiliaries and compositions, applied in the field of additive compositions, can solve problems such as large differences and non-systematic effects

Inactive Publication Date: 2011-06-08
TOTAL MARKETING SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, their efficacy is not systematic and varies widely from one batch of fiber to another

Method used

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  • Additive composition for textile auxiliaries
  • Additive composition for textile auxiliaries
  • Additive composition for textile auxiliaries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0141] Example 1: Deterioration of mechanical properties of polyamide yarns after dimensionally stable heat-setting, correlation with impaired dyeing affinity.

[0142] Several batches of polyamide yarn knitted fabrics (Nylon 6) consisting of 12 monofilaments having a weight per unit length of yarn of 44 decitex (or 44 g / 1000 rice yarn).

[0143] Each lot was dimensionally stabilized heat treated at 185°C and then dyed with the same metal type of stain.

[0144]For each batch, the part of the knitted fabric containing more dyeing defects (lighter color) was separated from the part of the knitted fabric dyed to the desired color (reg: normal). The two parts were then disassembled and the mechanical properties (tenacity and elongation) of each corresponding polyamide yarn were measured.

[0145] Toughness and ultimate elongation were measured using a Hounsfield H5KS tensile testing machine according to UNI EN ISO 2026 standard.

[0146] The tenacity of the yarn indicates the...

Embodiment 2

[0155] Example 2: Effect of pretreatment according to the invention on mechanical properties and dyeing affinity

[0156] Without preprocessing:

[0157] Knitted fabric batches of PA6-6 polyamide yarns of 44 points Tex consisting of 48 monofilaments were used. The yarn was knitted with a 3-monofilament elastic yarn to form a knitted fabric containing 20% ​​elastane (batch 6).

[0158] Such batches have been returned by customers due to dyeing defects, the dye being a deep purple acid dye, for which it is particularly difficult to obtain a continuous, uniform depth of color on heat-treated polyamide knitted fabrics .

[0159] The relevant part of batch 6 returned by the customer has undergone the following operations:

[0160] heat treatment:

[0161] The knitted fabric was passed through a filler bath containing only water, and then the knitted fabric was pressed between two squeeze rolls.

[0162] The knit was then fixed on pins to prevent wrinkling and passed thro...

Embodiment 3

[0196] Example 3: Types of pretreatment regimens

[0197] The pretreatment in Example 2 was repeated with a composition C2 according to the invention comprising:

[0198] (a) 12% by weight triethanolamine

[0199] (b) 25% by weight paraffin sulfonate

[0200] (c) 8% by weight sulfosuccinate and 6% propylene glycol ether

[0201] appropriate amount of water

[0202] It was also found that the mechanical properties of yarns pretreated with the composition of the invention were improved.

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PUM

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Abstract

The present invention relates to compositions for preparing textile auxiliaries, which are used in particular to enhance the dyeing affinity of textile fibres. The invention concerns a composition in the form of an aqueous emulsion or solution which comprises (a) one or more hydroxyalkylamines of formula: NX1X2(CnH2nOH), where X1 and X2 are, independently of one other, either hydrogen or hydroxyalkyl radicals of respective formulae Cn1H2n1OH and Cn2H2n2OH, and n, n1 and n2 are integers from 2 to 6, and (b) one or more anionic surfactants selected from alkyl sulphates, alkylsulphonates such as paraffinsulphonates, alkylarylsulphonates, alkyl ether phosphates, and alkyl carboxylates, and at least one compound (c) and / or (d), where (c) is selected from one or more thioureas (thiocarbamides) of formula R1R2N(CS)NR3R4, where R1, R2, R3 and R4 are independently either hydrogen or hydrocarbon radicals having 1 to 5 carbon atoms, and (d) is selected from one or more dialkyl sulphosuccinates in combination with one or more anti-freeze agents selected from methanol, isopropanol, glycols, preferably glycerol, ethylene glycol, propylene glycol or glycol ethers, preferably ethers of ethylene glycol or of propylene glycol.

Description

technical field [0001] The invention relates to additive compositions for the preparation of textile auxiliaries, in particular for increasing the dyeing affinity of textile fibers. Background technique [0002] It is often necessary to heat-set fabrics formed from textile fibers to impart dimensional stability to their intended use. This is especially true for synthetic fibers, optionally in relation to elastic fibers in knitted fabrics. [0003] Knitted polyamide fibers are therefore treated at temperatures of 170-200° C. or even above 200° C., depending in particular on the elastane content of the knitted fabric. An increase in the elastane content results in an increase in the heat setting temperature to achieve the desired dimensional stability. [0004] But this heat setting also has the effect of deteriorating the mechanical properties of the yarn, especially when said yarn is a polyamide fibre. This deterioration in mechanical properties is detrimental in itself, ...

Claims

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Application Information

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IPC IPC(8): D06M13/256D06M13/368D06M13/432D06M10/08D06M13/262D06P5/20D06P3/24D06C7/02
CPCD06P1/6491D06M2101/36D06M2101/34D06P3/24D06M13/224D06M13/368D06M13/256D06M13/432D06P1/645D06P1/623
Inventor 里夏尔·弗雷莱舒
Owner TOTAL MARKETING SERVICES