申请人:Akcros, Chemicals
公开号:US06355713B1
公开(公告)日:2002-03-12
&bgr;-Ketoesters and their enamines derived from alcohols or polyols are suitable for stabilizing polymers, and are represented by formulae: A[(O—CHR4—Z—CHR5)m—O—CO—CHR1—CO—R3]n and A[(O—CHR4—Z—CHR5)m—O—CO—CR1═C(—NHR2)—R3]n, wherein: A is the residue of an alcohol or polyol selected from hydroxyalkanoic acid esters, sugars and their glycosides, sugar alcohols, sugar acids and their esters, and oligosaccharides; m is an integer number from 0 up to 6; n is a number from 1 up to the total number of hydroxyl groups in the polyol; R1 is hydrogen, C1-C8 alkyl, C3-C8 alkenyl or cycloalkyl (alkyl) or C6-C8 aryl or aralkyl; R2 is hydrogen, C1-C6 alkyl, C2-C6 hydroxyalkyl or C3-C6 alkenyl; R3 is C1-C18 alkyl, alkoxy or alkylamino, C3-C18 alkenyl, alkanoylmethyl, alkoxycarbonylmethyl or cycloalkyl(alkyl), C6-C18 aryl, aryloxy, arylamino, aralkyl, aralkoxy or aralkylamino, or C8-C18 aroylmethyl, aryloxycarbonylmethyl or arylcarbamoylmethyl; R4 and R5 are independently hydrogen or methyl; and Z is a direct bond, CH2, CHOH, CH—O—CO—CHR1—CO—R3 or O—CO—CR1═C(—NHR2)—R3.
-Keto酯及其从醇类或多元醇类中得到的烯胺适用于稳定聚合物,其化学式为:A[(O—CHR4—Z—CHR5)m—O—CO—CHR1—CO—R3]n和A[(O—CHR4—Z—CHR5)m—O—CO—CR1═C(—NHR2)—R3]n,其中:A是从羟基烷酸酯、糖及其糖苷、糖醇、糖酸及其酯、寡糖中选择的醇或多元醇的残基;m是从0到6的整数;n是从1到多元醇中羟基总数的数字;R1是氢、C1-C8烷基、C3-C8烯基或环烷基(烷基)或C6-C8芳基或芳基烷基;R2是氢、C1-C6烷基、C2-C6羟基烷基或C3-C6烯基;R3是C1-C18烷基、烷氧基或烷基氨基、C3-C18烯基、烷酰甲基、烷氧羰基甲基或环烷基(烷基)、C6-C18芳基、芳氧基、芳基氨基、芳基烷基、芳基烷氧基或芳基烷基氨基,或C8-C18芳酰甲基、芳氧羰基甲基或芳基碳酰胺甲基;R4和R5独立地是氢或甲基;Z是直接键、CH2、CHOH、CH—O—CO—CHR1—CO—R3或O—CO—CR1═C(—NHR2)—R3。