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    • 1. 发明申请
    • Method of Making Polybutylene Terephthalate and Compositions and Articles Comprising the Same
    • 制造聚对苯二甲酸丁二酯及其组合物及其制品的方法
    • US20090275698A1
    • 2009-11-05
    • US12114172
    • 2008-05-02
    • Gomatam Raghavan RaviDeepak RamarajuSrinivasan Krishnaswami
    • Gomatam Raghavan RaviDeepak RamarajuSrinivasan Krishnaswami
    • C08G63/91C08L67/03
    • C08G63/183C08G63/78C08G63/80
    • A process for making modified polybutylene terephthalate random copolymers from a polyethylene terephthalate component includes reacting an oligomeric diol component selected from the group consisting of bis(hydroxybutyl)terephthalate, bis(hydroxybutyl)isophthalate, hydroxybutyl-hydroxyethyl terephthalate, and combinations thereof to a reactor; (i) a polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers with (ii) a diol component selected from the group consisting of 1,4-butanediol, ethylene glycol, propylene glycol, and combinations thereof, in the reactor under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; combining the first molten mixture is combined with 1,4-butanediol under conditions to form a second molten mixture; and placing the second molten mixture under conditions sufficient to produce the modified polybutylene terephthalate random copolymers. Also described are compositions and articles made from the process.
    • 从聚对苯二甲酸乙二醇酯组分制备改性聚对苯二甲酸丁二醇酯无规共聚物的方法包括将选自双(羟基丁基)对苯二甲酸酯,双(羟基丁基)间苯二甲酸酯,羟基丁基 - 羟乙基对苯二甲酸酯及其组合的低聚二醇组分与反应器反应; (i)选自聚对苯二甲酸乙二醇酯和聚对苯二甲酸乙二醇酯共聚物的聚对苯二甲酸乙二醇酯组分和(ii)选自1,4-丁二醇,乙二醇,丙二醇及其组合的二醇组分,其中 反应器在足以将聚对苯二甲酸乙二醇酯组分解聚为第一熔融混合物的条件下进行; 在第一熔融混合物的条件下将第一熔融混合物与1,4-丁二醇组合以形成第二熔融混合物; 并将第二熔融混合物置于足以产生改性聚对苯二甲酸丁二醇酯无规共聚物的条件下。 还描述了由该方法制备的组合物和制品。
    • 2. 发明授权
    • Method of making polybutylene terephthalate and compositions and articles comprising the same
    • 制备聚对苯二甲酸丁二醇酯的方法和包含其的组合物和制品
    • US07799892B2
    • 2010-09-21
    • US12114172
    • 2008-05-02
    • Gomatam Raghavan RaviDeepak RamarajuSrinivasan Krishnaswami
    • Gomatam Raghavan RaviDeepak RamarajuSrinivasan Krishnaswami
    • C08G63/00
    • C08G63/183C08G63/78C08G63/80
    • A process for making modified polybutylene terephthalate random copolymers from a polyethylene terephthalate component includes reacting an oligomeric diol component selected from the group consisting of bis(hydroxybutyl) terephthalate, bis(hydroxybutyl)isophthalate, hydroxybutyl-hydroxyethyl terephthalate, and combinations thereof to a reactor; (i) a polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers with (ii) a diol component selected from the group consisting of 1,4-butanediol, ethylene glycol, propylene glycol, and combinations thereof, in the reactor under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; combining the first molten mixture is combined with 1,4-butanediol under conditions to form a second molten mixture; and placing the second molten mixture under conditions sufficient to produce the modified polybutylene terephthalate random copolymers. Also described are compositions and articles made from the process.
    • 从聚对苯二甲酸乙二醇酯组分制备改性聚对苯二甲酸丁二醇酯无规共聚物的方法包括将选自双(羟基丁基)对苯二甲酸酯,双(羟基丁基)间苯二甲酸酯,羟基丁基 - 羟乙基对苯二甲酸酯及其组合的低聚二醇组分与反应器反应; (i)选自聚对苯二甲酸乙二醇酯和聚对苯二甲酸乙二醇酯共聚物的聚对苯二甲酸乙二醇酯组分和(ii)选自1,4-丁二醇,乙二醇,丙二醇及其组合的二醇组分,其中 反应器在足以将聚对苯二甲酸乙二醇酯组分解聚为第一熔融混合物的条件下进行; 在第一熔融混合物的条件下将第一熔融混合物与1,4-丁二醇组合以形成第二熔融混合物; 并将第二熔融混合物置于足以产生改性聚对苯二甲酸丁二醇酯无规共聚物的条件下。 还描述了由该方法制备的组合物和制品。