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HIGH-DEGREE AROMATIC POLYUREA/URETHANE FILM AND METHOD OF SEPARATING AROMATIC COMPOUND FROM NON-AROMATIC COMPOUND BY SAID FILM
HIGH-DEGREE AROMATIC POLYUREA/URETHANE FILM AND METHOD OF SEPARATING AROMATIC COMPOUND FROM NON-AROMATIC COMPOUND BY SAID FILM
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机译:高度芳香族聚氨酯/尿烷膜以及通过所述膜从非芳香族化合物中分离芳香族化合物的方法
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摘要
PURPOSE: To selectively separate an arom. compd. from a satd. compd. by forming a polyurea/urethane membrane specified in the respective characteristic values of a urea index, arom. carbon content, functional group density and C=O/NH ratio. CONSTITUTION: The polyurea/urethane membrane having the urea index of 20 to 100%, the arom. carbon content of at least 15 mole %, the functional group density of =10 per 100 g polymer and the C=O/NH ratio of 8 is formed. The polyurea/urethane membrane may be obtd. by reacting a dihydroxyl or polyhydroxyl compd. with an arom., an alkyl arom. or an arom. diisocyanate or polyisocyanate and a low mol.wt. chain extender. A mixture composed of the arom. compd. and the non-arom. compd. is supplied to the resulted polyurea/ urethane membrane, by which the arom. compd. is efficiently separated.
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机译:目的:选择性地分离芳香剂。补偿。从饱和补偿。通过形成在尿素指数arom的各个特征值中指定的聚脲/聚氨酯膜。碳含量,官能团密度和C = O / NH比。组成:尿素指数为20%至100%的聚脲/尿烷膜。每100g聚合物形成至少15摩尔%的碳含量,≥10的官能团密度和≤8的C = O / NH比。聚脲/尿烷膜可以被去除。通过使二羟基或多羟基化合物反应。用芳烃,烷基芳烃或芳香二异氰酸酯或多异氰酸酯和低分子量扩链剂。由芳烃组成的混合物。补偿。和非芳香剂。补偿。将其供应到所得的聚脲/氨基甲酸乙酯膜上,由此芳香剂。补偿。被有效地分离。
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