Environmentally-friendly alkali resistant scouring agent and preparation method thereof

Abstract

The invention relates to an environmentally-friendly alkali resistant scouring agent and a preparation method thereof. Present common scouring agents cannot resist alkalis, and have an unsatisfactory permeability under alkaline conditions. Raw materials of the environmentally-friendly alkali resistant scouring agent comprise 2.0-2.5mol of isomeric alcohol ether, 1.0mol of a carboxylation agent and 1.05mol of an inorganic alkali. The preparation method of the environmentally-friendly alkali resistant scouring agent comprises the following steps: weighing the raw materials; adding the isomeric alcohol ether to a reaction container, stirring, heating to 30-50DEG C, and adding the carboxylation agent into the isomeric alcohol ether to obtain a mixed solution A; adding the inorganic alkali to the mixed solution A for reacting to obtain a mixed solution B; heating the mixed solution B to 60-75DEG C, and reacting for 2-4h to obtain a mixed solution C; sampling and analyzing the mixed solution C; and cooling the mixed solution C to 50DEG C to obtain the environmentally-friendly alkali resistant scouring agent. The environmentally-friendly alkali resistant scouring agent has the advantages of alkali resistance, environmental protection, good biodegradability, and no containment of APEO, P or heavy metals.

Description

technical field [0001] The invention relates to a scouring agent and a preparation method thereof, in particular to an environment-friendly alkali-resistant scouring agent and a preparation method thereof, which are mainly suitable for the pre-treatment process of printing and dyeing of cotton, linen and their blended fabrics. Background technique [0002] Cotton, linen and their blended fabrics are usually treated before printing and dyeing to remove impurities such as sizing and fiber symbiosis on the fabrics to obtain ideal whiteness and hair effect. Generally, caustic soda, scouring agent, stabilizer and hydrogen peroxide are used to The fabric is desizing, scouring and bleaching. The alkali resistance of the scouring agent used is between 60-100g / l. With the increase of the amount of alkali used, its performance will be destroyed, thereby affecting the quality of the product. [0003] With the continuous development of printing and dyeing technology, both open-width pad...

AI Technical Summary

Problems solved by technology

There are also some alkali-resistant scouring agents with relatively good performance at present. For example, the Chinese patent whose publication date is January 07, 2009 and whose publication number is CN101338514A discloses a high-performance cold pad-batch scouring agent and a preparation method thereof. The preparation method of high-performance cold pad-batch scouring agent adopts low-carbon EO / PO polyether, maleic anhydride and compound organic acid catalyst to carry out esterification reaction, and then carries out sulfonation reaction with sodium sulfite to obtain high-performance cold pad-batch scouring agent, although the High-performance cold pad-batch scouring agent can basically meet the requirements of low-alkali pretreatment process, but the permeability is not ideal under alkaline conditions, and the whole preparation process is relatively complicated

Another example is that the publication date is January 30, 2008, and the publication number is CN101113569 in the Chinese patent, which discloses a high-efficiency refining agent and its production method. The refining agent is composed of the following raw materials in weight ratio. Alcohol ether phosphate 75-90%, fatty alcohol ether 5-15% and synergist 3-10%. When this scouring agent is used in the pre-treatment of cotton and linen fabrics, it can effectively remove the impurities in cotton and linen fabrics. Impurities such as fruit wax, cottonseed husks, floating objects, etc., after treatment, the surface of the fabric is smooth and clean, with extremely high hair effect and whiteness, which is beneficial to the dyeing and printing of fabrics, has high-speed penetration and good dispersion ability to fibers, and strong alkali resistance 200g / l, high temperature resistance, hard water resistance, not only suitable for continuous padding method, but also suitable for printing and dyeing methods such as cold pad batch, descouring and bleaching one-step method. Although the refining agent does not contain APEO, it contains a large amount of phosphorus substances, which is easy to cause Phosphorus-enriched nutrition of the water system has been seriously affected, and fisheries and human life have been seriously affected.

Another example is that the publication date is April 09, 2008, and the publication number is CN101158113 in the Chinese patent, which discloses an environmentally friendly high-efficiency scouring agent, which is mainly composed of fatty amide polyoxyethylene ether succinic acid monoester sulfonate Sodium acid sodium, C12-14 alkyl polyglucoside, isomeric C13 alcohol polyoxyethylene ether carboxylate sodium, secondary alkyl sulfonate, chelating dispersant KX130 and water, the composition is relatively complicated, and the preparation process is complicated

[0004] It can be seen that the existing commonly used scouring agents are not resistant to concentrated alkali, their permeability is not ideal under alkaline conditions, and they are not suitable for high-concentration alkali liquid supply systems; and some alkali-resistant scouring agents mainly rely on alcohol ether phosphate groups To improve alkali resistance, it contains a lot of phosphorus substances, which has a serious impact on water quality

Also do not have a kind of alkali-resistant environmental protection, good biodegradability, the environment-friendly alkali-resistant scouring agent that does not contain APEO, phosphorus and heavy metal and preparation method thereof