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Low temperature non-foaming soaping agent and preparation method thereof

A soaping agent and low-temperature technology, applied in detergent compositions, chemical instruments and methods, non-surface-active detergent compositions, etc., can solve the problem of low vinyl pyrrolidone content, limited cleaning effect of textiles, and limited copolymer soap Washing performance and other issues, to achieve the effect of not easy to stratify and precipitate, excellent soaping effect, excellent anti-sticking effect

Inactive Publication Date: 2011-06-15
ZHEJIANG JINGYE BIOCHEM +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent CN101531731A discloses a method for preparing a polymeric acidic prepolymer used for dyeing and washing of textiles. The polymeric acidic prepolymer is a copolymer of organic acid mixture, acrylamide and vinylpyrrolidone. Although it can be used in the soaping process Removing the residual alkali after dyeing saves the process, but the content of vinylpyrrolidone in the acidic prepolymer is relatively low, and because the vinylpyrrolidone molecule contains nitrogen atoms, it is weakly cationic, and it can be combined with a polymerizable organic acid When the copolymer is copolymerized, it is easy to have an ion association effect in the polymer molecule with an anionic organic acid monomer, resulting in poor stability of the obtained copolymer solution, and easy to delaminate and precipitate; in addition, due to this polymer Intramolecular anion and cation association embedding effect, so that the vinylpyrrolidone component with excellent affinity and dispersibility to dyes cannot fully play its role, which greatly limits the soaping performance of this copolymer. Limited washing effect on textiles

Method used

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  • Low temperature non-foaming soaping agent and preparation method thereof
  • Low temperature non-foaming soaping agent and preparation method thereof

Examples

Experimental program
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Effect test

specific Embodiment 1

[0024] Add 180g of deionized water, 20g of acrylic acid, and 40g of maleic anhydride into a 500mL four-necked flask and mix well, then add 40% sodium hydroxide solution to adjust the pH value of the mixed solution to 7.5, and then add polyethylene glycol 0.1 with a molecular weight of 2000 g, stir to make the material dissolve completely, ventilate nitrogen, heat up, when the reaction temperature rises to 70°C, then dropwise add 40g vinylpyrrolidone and a mass concentration of 1% ammonium persulfate and sodium bisulfite mixture (wherein (NH 4 ) 2 S 2 o 8 and NaHSO 3 50g of aqueous solution with a molar ratio of 5:1), the dropping time is controlled within 2 hours, after the dropping is completed, the reaction is continued for 1 hour under the protection of nitrogen, and the temperature is lowered to below 45°C, and the material is discharged, and the low-temperature non-foaming soaping agent can be obtained. The molecular weight is about 200,000.

specific Embodiment 2

[0025] After adding 150g of deionized water, 40g of acrylic acid, and 30g of maleic anhydride in a 500mL four-necked flask and mixing evenly, add 50% sodium hydroxide solution to adjust the pH value of the mixed solution to 7.5, then add 5g of polyvinyl alcohol with a molecular weight of 600, Stir to make the material dissolve completely, ventilate nitrogen, heat up, the reaction temperature rises to 75°C, then dropwise add 30g vinylpyrrolidone and mass concentration simultaneously then be 2.5% ammonium persulfate and sodium bisulfite mixture (wherein (NH 4 ) 2 S 2 o 8 and NaHSO 3 20g of aqueous solution with a molar ratio of 5:1), the dropping time is controlled at 2.5h, after the dropping is completed, the reaction is continued for 1.5h under the protection of nitrogen, the temperature is lowered to below 45°C and the material is discharged, and the low-temperature non-foaming soaping agent can be obtained. The viscosity average molecular weight is about 145,000.

specific Embodiment 3

[0026] After adding 120g of deionized water, 50g of acrylic acid, and 20g of maleic anhydride in a 500mL four-necked flask and mixing them evenly, add 30% sodium hydroxide solution to adjust the pH value of the mixed solution to 8, then add 2g of glucose with a molecular weight of 400, and stir to make The material is completely dissolved, nitrogen is vented, the temperature is raised, and the reaction temperature is raised to 80°C, and then 30g of vinylpyrrolidone and a mass concentration of 10% ammonium persulfate and sodium bisulfite mixture (wherein (NH 4 ) 2 S 2 o 8 and NaHSO 3 The molar ratio is 5: 1) aqueous solution 10g, the dropwise addition time is controlled at 4h, after the dropwise addition is completed, continue to react for 2h under the protection of nitrogen, cool down to below 45°C and discharge the material, then the low-temperature non-foaming soaping agent can be obtained. The molecular weight is about 116,000.

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Abstract

The invention relates to the textile printing and dyeing technical field and aims to provide a low temperature non-foaming soaping agent and a preparation method thereof. The method comprises the following steps: mixing acrylic monomer, maleic anhydride monomer and deionized water evenly, dropping sodium hydroxide solution to be neutral, then adding colloid protecting agent, mixing evenly; performing nitrogen replacement to the solution, heating to 60-80 DEG C, then dropping vinylpyrrolidone monomer and initiator solution in the solution to perform copolymerization, reacting for 1-6 hours under the protection of nitrogen, and naturally cooling to less than 45 DEG C. In the preparation method of the invention, polymer is difficult to layer and precipitate, the production process is easy to control, the prepared polymer soaping agent solution has high stability; the soaping effect is excellent; in the soaping process, foams are not generated, water and energy are saved and the process flow is shortened; the anti-staining effect is excellent; the soaping temperature is 20-40 DEG C lower than that of the conventional soaping agent, thus greatly saving energy consumption; and the environment is not polluted.

Description

technical field [0001] The invention relates to the technical field of textile printing and dyeing, in particular to a low-temperature non-foaming soaping agent for textile dyeing and soaping and a preparation method thereof. technical background [0002] Reactive dyes can impart excellent color fastness to fabrics through covalent bonding, so they are favored by manufacturers of printed and dyed cellulose textiles. However, reactive dyes are prone to hydrolysis when they are dyed and fixed, and hydrolyzed dyes are adsorbed on fibers to form floating colors, which seriously affect the color fastness of dyed and printed fabrics. In order to obtain printing and dyeing products with good color fastness and quality, reactive dyes must be soaped after dyeing, and the soaping process is one of the key steps for the quality of printed and dyed products. Choosing an appropriate soaping agent is an effective method to improve product quality and reduce energy consumption. [0003] ...

Claims

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Application Information

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IPC IPC(8): C08F222/06C08F220/06C08F226/10C11D7/32D06P5/08
Inventor 傅越江钟少锋吴幼泉黄小军
Owner ZHEJIANG JINGYE BIOCHEM
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