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由于必须降低磷酸盐引起的河流和湖泊的污染,导致作为洗涤助剂的磷酸盐代用品的开发,该助剂在洗涤剂中可达30%(重量),适于作磷酸盐代用品的助洗剂应满足以下要求:不降低洗涤剂的质量,毒物学和生态学安全,可用易获得的原料大规模生产。最初研究的磷酸盐代用品是碳酸钠和水玻璃之类的水溶性无机物和柠檬酸盐、氮川三醋酸和乙二胺四醋酸钠。近十年中,已有各生产洗涤剂的公司发表了大量专利。在已提出的多价螯合剂和离子交换剂中,4A和13X
Due to the need to reduce the pollution of rivers and lakes caused by phosphates, leading to the development of phosphate substitutes as detergent builders, the auxiliaries are up to 30% by weight in detergents and are suitable as phosphate substitutes Lotions should meet the following requirements: Mass production of detergents, toxicology and ecological safety can be achieved on a large scale using readily available raw materials. The originally studied phosphate substitutes are water-soluble inorganic substances such as sodium carbonate and water glass and citrates, nitrilotriacetic acid and sodium ethylenediaminetetraacetate. In the past decade, a large number of patents have been issued by companies that produce detergents. Among the proposed sequestering and ion exchangers, 4A and 13X