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    APEO

    The eco-environmental issues related to APEO have been debated for many years. APEO includes nonylphenol ethoxylate (NPEO) accounted for 80-85%, octylphenol ethoxylate (OPEO) accounted for more than 15%, dodecylphenol ethoxylate (DPEO) and dimercapto Phenolic polyoxyethylene ether (DNPEO) each accounted for 1%. The annual consumption of alkylphenol ethoxylates (APEO) in the world is 880 million pounds, of which more than 80% is nonylphenol ethoxylates (NPEO). The potential harm of APEO to the environment has been extensively studied and demonstrated. Countries around the world have begun to restrict the use of APEO. For example, Norway has stopped using APEO at the end of 2000. The Netherlands, Portugal, Sweden, Spain, the United States, and other countries have informal agreements on the deactivation and replacement of APEO. Some European companies have set a limit of 30-50 mg/kg for APEO on textiles. The value of textiles and clothing exported to Europe by China is worth 10 billion U.S. dollars per year. With the cancellation of quotas in 2005, this sales trend is bound to rise, so we must take APEO seriously.

    The restriction on APEO content in eco-textiles and garments seems to be a matter of printing and dyeing enterprises, but in fact, it is inseparable from the close cooperation of the auxiliary industry in this production chain. In the face of APEO's ban, we should first pay attention to it, and then take some effective measures to prevent the production and use of APEO-containing additives. The key to solving this problem is to find suitable surfactants to effectively replace APEO in our printing and finishing. The role and function of the process. The ecological impact of APEO can be summarized into four aspects: toxicity, biodegradability, environmental hormones, and harmful by-products produced during APEO production.

    Responses
    APEO is replaced by a fatty alcohol polyoxyethylene ether or a branched fatty alcohol polyoxyethylene ether in place of APEO. Such as the brand name is AEO series (C12-C16 fatty alcohol polyoxyethylene ether), flat plus 0 (C18 fatty alcohol polyoxyethylene ether) or XL-50 (isomeric C10 alcohol polyoxyethylene ether, T07 (isomeric C13 alcohol These products also have excellent properties of permeation, emulsification and solubilization. If the scouring agent and penetrant need to improve alkali resistance, they can be compounded in the auxiliary agent such as AES (dodecyl polyoxyethylene ether sulfate). Ester), SAS (sodium alkane sulfonate), AOS (α-olefin sulfonate), alkyl polyglycoside (APG) and other alkali-resistant surfactants, these surfactants have good biodegradability, It also contains no carcinogenic aromatic amines and no heavy metal ions, which will not cause harm to human health. With the above-mentioned surfactants, reasonable choices can be made to synthesize penetrants, scouring agents and emulsifiers that meet various requirements. , detergent, soaping agent, leveling agent.

    In recent years, Europe's requirements for textile ecology have increased year by year, so we must pay attention to the relevant information on ecological textile regulations and technical standards in Europe, and formulate corresponding countermeasures to further explore the European market. In response to APEO's limited requirements on textiles, the printing and dyeing and auxiliaries industry should adopt close and sincere cooperation.

    Printing and dyeing manufacturers must purposely choose environmentally friendly auxiliaries, and the auxiliaries from pre-treatment to finishing must be strictly checked. Strengthen the testing work, sign a commitment letter with the auxiliary factory to achieve the safe use of eco-textile chemicals without APEO.

    Eco-textiles and environmental management of printing and dyeing companies require close cooperation with the auxiliaries. The auxiliaries manufacturer knows whether the products contain banned chemicals, and only they understand the possible components in the products. The auxiliaries are also easier to detect than the fabrics. The detection of very small amounts on the fabric often requires high precision. Expensive instrumentation; testing in auxiliaries is often simple and easy. The development, production and sale of additives must be honest.

    My laboratory has already paid attention to the relevant situation of APEO, and actively prepared for research and developed a set of rigorous and scientific testing methods. It is hoped that the information superiority and technical advantages of the company will be fully utilized, and the relevant testing technologies and testing standards of APEO will be closely tracked and collected in time. At the same time, APEO project testing technical services will be provided for the majority of enterprises, thus helping relevant enterprises to rationally select materials, actively respond and avoid risks.