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国外两家公司宣布,它们开发了一种从循环废涤纶树脂和通过生物发酵从谷物淀粉化学衍生来环境友好地合成聚氨酯用的聚酯多元醇的技术。后者是由位于
Two foreign companies announced that they have developed a technology that recycles waste polyester resins and polyester polyols that are chemically derivatized from cereal starch by bio-fermentation for the environmentally friendly synthesis of polyurethanes. The latter is located by