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    • 17. 发明授权
    • Polysiloxane/polyimide copolymers and blends thereof
    • 聚硅氧烷/聚酰亚胺共聚物及其共混物
    • US08071693B2
    • 2011-12-06
    • US11425725
    • 2006-06-22
    • Susanta BanerjeeRobert Russell GallucciGurulingamurthy M HaralurGanesh KailasamWilliam A KernickUtpal Mahendra Vakil
    • Susanta BanerjeeRobert Russell GallucciGurulingamurthy M HaralurGanesh KailasamWilliam A KernickUtpal Mahendra Vakil
    • C08G77/26
    • C08G73/106C08G77/452C08L79/08C08L83/10C08L2205/02C08L2666/20C08L83/00
    • Disclosed herein is a polysiloxane/polyimide block copolymer having a siloxane content of 5 to 30 weight percent, based on the total weight of the block copolymer and comprising repeating units of Formula (I) wherein R1-6 are independently at each occurrence selected from the group consisting of substituted or unsubstituted, saturated, unsaturated or aromatic monocyclic and polycyclic groups having 5 to 30 carbon atoms, substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms and substituted or unsubstituted alkenyl groups having 2 to 30 carbon atoms, V is a tetravalent linker selected from the group consisting of substituted or unsubstituted, saturated, unsaturated or aromatic monocyclic and polycyclic groups having 5 to 50 carbon atoms, substituted or unsubstituted alkyl groups having 1 to 30 carbon atoms, substituted or unsubstituted alkenyl groups having 2 to 30 carbon atoms and combinations comprising at least one of the foregoing linkers, g equals 1 to 30, and d is greater than or equal to 1. Also disclosed are blends of the disclosed block copolymers, methods of making the blends and articles comprising the block copolymer and block copolymer blends.
    • 本文公开了一种聚硅氧烷/聚酰亚胺嵌段共聚物,其硅氧烷含量为嵌段共聚物总重量的5-30重量%,并且包含式(I)的重复单元,其中R1-6各自独立地选自 由具有5至30个碳原子的取代或未取代的饱和,不饱和或芳族单环和多环基团,取代或未取代的具有1至30个碳原子的烷基和具有2至30个碳原子的取代或未取代的烯基组成的组,V为 选自具有5至50个碳原子的取代或未取代的,饱和的,不饱和的或芳族的单环和多环基团,取代或未取代的具有1至30个碳原子的烷基,取代或未取代的具有2-30个碳原子的烯基的四价接头 原子和组合,其包含至少一种前述接头,g等于1至30,d为g 还公开了所公开的嵌段共聚物的共混物,制备包含嵌段共聚物和嵌段共聚物共混物的共混物和制品的方法。
    • 18. 发明授权
    • Process for making polybutylene terephthalate (PBT) from polyethylene terephthalate (PET)
    • 从聚对苯二甲酸乙二醇酯(PET)制造聚对苯二甲酸丁二醇酯(PBT)的方法
    • US07902263B2
    • 2011-03-08
    • US11626684
    • 2007-01-24
    • Parminder AgarwalKristen CohoonSandeep DhawanRobert Russell GallucciGanesh KannanKenneth Frederick MillerDhaval Shah
    • Parminder AgarwalKristen CohoonSandeep DhawanRobert Russell GallucciGanesh KannanKenneth Frederick MillerDhaval Shah
    • C08J11/04
    • C08G63/183C08J11/24C08J2367/02Y02W30/706
    • The invention relates to a process for making modified polybutylene terephthalate random copolymers from a polyethylene terephthalate component. In one embodiment, the invention relates to a two step process in which a 1,4-butane diol component reacts with a polyethylene terephthalate component under conditions that depolymerize the polyethylene terephthalate component into a molten mixture and the molten mixture is placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. In another embodiment, the invention relates to a three step process in which a diol component selected from the group consisting of ethylene glycol, propylene glycol, and combinations thereof reacts with a polyethylene terephthalate component under conditions sufficient to depolymerize the polyethylene terephthalate component into a first molten mixture; and where the first molten mixture is combined with 1,4-butane diol under conditions that create a second molten mixture that is subsequently placed under subatmospheric conditions that produce the modified polybutylene terephthalate random copolymers. The invention also relates to compositions made from processes of the invention.
    • 本发明涉及一种由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。 在一个实施方案中,本发明涉及二步法,其中1,4-丁二醇组分在聚对苯二甲酸乙二醇酯组分解聚熔融混合物的条件下与聚对苯二甲酸乙二醇酯组分反应,并将熔融混合物置于低于大气压的条件下 生产改性聚对苯二甲酸丁二醇酯无规共聚物。 在另一个实施方案中,本发明涉及三步法,其中选自乙二醇,丙二醇及其组合的二醇组分在足以使聚对苯二甲酸乙二醇酯组分解聚为第一 熔融混合物 并且其中在产生第二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,随后将其置于产生改性聚对苯二甲酸丁二醇酯无规共聚物的低于大气压条件下。 本发明还涉及由本发明的方法制备的组合物。