关键词: 1,4-丁烯二醇, 端羟基聚丁二烯, 聚对苯二甲酸乙二醇酯, 吸氧剂

Abstract: Maleic anhydride/2-butene-1,4-diol and maleic anhydride/terminated polybutadiene oxygen scavenger have been prepared by esterification. The influence of reaction time and ratio of alcohol-anhydride on the esterification rate has been discussed，and maleic anhydride/2-butene-1,4-diol and maleic anhydride/terminated polybutadiene oxygen scavenger have been grafted to PET for preparing oxygen scavenger material. Physical property and oxygen absorption of oxygen scavenger material of 2-butene-1,4-diol and terminated polybutadiene were investigated. Retained ratio of double bonds，catalyst amount，and ratio of alcohol-anhydride were investigated. The results showed the optimal preparation condition of 2-butene-1,4-diol oxygen scavenger reaction time would be 2h under which maleic anhydride esterification rate reached 62.55%，maximum number-average molar mass of 2-butene-1,4-diol oxygen scavenger material reached 36607，retained maximum ratio of double bonds of 2-butene-1,4-diol oxygen scavenger material reached 77.4%，the absorbed oxygen volume of 2-butene-1,4-diol oxygen scavenger material would be 3.17 mL，maximum catalyst amount of 2-butene-1,4-diol oxygen scavenger material and terminated polybutadiene oxygen scavenger material reached 1.0 g/kg. Terminated polybutadiene oxygen scavenger reaction time would be 3h under which maleic anhydride esterification rate reached 59.38%，the absorbed oxygen volume of terminated polybutadiene oxygen scavenger material would be 10.04 mL，maximum number-average molar mass of terminated polybutadiene oxygen scavenger material reached 49735，maximum ratio of double bonds of 2-butene-1,4-diol oxygen scavenger material reached 76.3%.

Key words: 2-butene-1,4-diol, terminated polybutadiene, PET, oxygen scavenger