POLYESTER FOR THE PAPER INDUSTRY
收藏国家林业和草原科学数据中心2023-02-12 更新2024-03-07 收录
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The invention relates to the use of polyesters for increasing the surface tension and for improving the hydrophilic behavior of hydrophobic surfaces. The invention is characterized in that the polyesters can be obtained by polymerizing a) one or more sulfogroups of free， aromatic dicarboxylic acids and/or the salts thereof and/or the anhydrides thereof and/or the esters thereof， b) ethylene glycol， c) 1，2 propylene glycol， d) one or more polyalkylene glycols， and e) one or more compounds of the formula (1) R1O(CHR2CHR3O)nH (1)， wherein R1 represents a linear or branched， saturated or unsaturated alkyl group with 1 to 22 C atoms， preferably methyl; R2 and R3 independently of each other represent hydrogen or an alkyl group with 1 to 4 carbon atoms， preferably hydrogen and/or methyl; and n is a number from 1 to 50 ， f) either in the presence or the absence of one or more crosslinking compounds with 3 to 6 functions capable of polycondensation， in particular acid， alcohol， or ester functions， with the proviso that the components d) are used in quantities by weight < 80% based on the quantity by weight of the polyesters obtained by means of the polymerization process. The invention relates to the use of polyesters for increasing the surface tension and for improving the hydrophilic behavior of hydrophobic surfaces. The invention is characterized in that the polyesters can be obtained by polymerizing a) one or more sulfogroups of free， aromatic dicarboxylic acids and/or the salts thereof and/or the anhydrides thereof and/or the esters thereof， b) ethylene glycol， c) 1，2 propylene glycol， d) one or more polyalkylene glycols， and e) one or more compounds of the formula (1) R 1O(CHR2CHR3O)nH (1)， wherein R1 represents a linear or branched， saturated or unsaturated alkyl group with 1 to 22 C atoms， preferably methyl; R2 and R3 independently of each other represent hydrogen or an alkyl group with 1 to 4 carbon atoms， preferably hydrogen and/or methyl; and n is a number from 1 to 50 ， f) either in the presence or the absence of one or more crosslinking compounds with 3 to 6 functions capable of polycondensation， in particular acid， alcohol， or ester functions， with the proviso that the components d) are used in quantities by weight < 80% based on the quantity by weight of the polyesters obtained by means of the polymerization process.
提供机构：
国家林业和草原科学数据中心
创建时间：
2023-02-12
