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    Processes for preparing telechelic, branched and star thermoplastic resin polymers
    1.
    发明公开
    Processes for preparing telechelic, branched and star thermoplastic resin polymers 失效
    一种用于制备远螯聚合物，热塑性树脂过程支链和星形聚合物

    公开(公告)号：EP0814097A2

    公开(公告)日：1997-12-29

    申请号：EP97303948

    申请日：1997-06-06

    Applicant: XEROX CORP

    Inventor： KAZMAIER PETER M ,  KEOSHKERIAN BARKEV ,  MOFFAT KAREN A ,  GEORGES MICHAEL K ,  HAMER GORDON K ,  VEREGIN RICHARD P N

    IPC: C08F2/50 ,  C08F4/00 ,  C08F4/32 ,  C08F285/00 ,  C08F291/00 ,  C08F293/00

    CPC classification number: C08F4/00 ,  C08F291/00 ,  C08F293/00 ,  Y10S522/904 ,  Y10S525/901 ,  Y10S525/941

    Abstract: A process for the preparation of branched thermoplastic resins comprising: heating a mixture of a free radical initiator, at least one first free radical reactive monomer, at least one free radical reactive branching agent compound, and at least one stable free radical agent, to produce a linear or unbranched polymer product with a free radical initator fragment at one end and a covalently bonded stable free radical agent at the other end of the polymerized chain of monomers; and irradiating the unbranched polymer product in the presence of a reactive compound selected from the group consisting of a free radical reactive monomer, a branching agent compound, and mixtures thereof to form a branched polymeric product.

    Abstract translation: 一种用于支链的热塑性树脂，其包括的制备方法：加热自由基引发剂的混合物，至少一个第一自由基反应性单体，至少一种自由基反应性支化剂化合物，和至少一种稳定的自由基剂，以产生 与在一个末端具有自由基引发剂片段，并在聚合的单体的链的另一端共价结合的稳定自由基试剂的直链或无支链的聚合物产物; 并在反应性化合物的选自自由基反应性单体，支化剂的化合物，及其混合物的存在下照射无支链的聚合物产物，以形成支化的聚合物产物。

    POLYMERIZATION PROCESSES AND TONER COMPOSITIONS THEREFROM.
    3.
    发明公开
    POLYMERIZATION PROCESSES AND TONER COMPOSITIONS THEREFROM. 失效
    聚合过程及其组成。

    公开(公告)号：EP0621878A4

    公开(公告)日：1996-01-17

    申请号：EP93923185

    申请日：1993-10-01

    Applicant: XEROX CORP

    Inventor： GEORGES MICHAEL K ,  VEREGIN RICHARD P N ,  KAZMAIER PETER M ,  HAMER GORDON K

    IPC: C08F2/00 ,  C08F2/38 ,  C08F4/00 ,  C08F4/04 ,  C08F4/28 ,  C08F4/42 ,  C08F293/00 ,  C08F297/00 ,  G03G9/08 ,  G03G9/087 ,  C08F299/00

    CPC classification number: G03G9/08702 ,  C08F2/00 ,  C08F2/38 ,  C08F4/04 ,  C08F4/28 ,  C08F293/005

    Abstract: Disclosed is a free radical polymerization process for the preparation of a thermoplastic resin or resins comprising heating a mixture of a free radical initiator, a stable free radical agent, and at least one polymerizable monomer compound to form a thermoplastic resin or resins with a high monomer to polymer conversion; cooling said mixture; optionally isolating the thermoplastic resin or resins; and optionally washing and drying thermoplastic resin or resins. Related free radical processes are also disclosed for the preparation of mixtures and block copolymer thermoplastic resins. Resins prepared by the disclosed processes possess a narrow polydispersity and a modality that is controlled by the selection of a free radical initiator and stable free radical agent addition step or steps. The figure is a plot of percent conversion versus molecular weight of a polystyrene homopolymer product obtained from a bulk or solventless stable free radical agent moderated polymerization of styrene at 130 degrees centigrade.

    6.
    发明专利
    未知

    公开(公告)号：BR9400671A

    公开(公告)日：1994-10-25

    申请号：BR9400671

    申请日：1994-02-24

    Applicant: XEROX CORP

    Inventor： GEORGES MICHAEL K ,  PATEL RAJ D

    IPC: C08F2/00 ,  C08F2/02 ,  C08F2/16 ,  C08F4/00 ,  C08F2/18

    Abstract: Disclosed is a process for the preparation of a polymer which comprises effecting bulk polymerization of a mixture of at least one monomer, a free radical polymerization initiator, and a stable free radical agent until from about 10 to about 50 weight percent of the monomer has been polymerized; optionally adding additional free radical initiator; optionally adding a colorant; dispersing with a high shear mixer the aforementioned partially polymerized mixture in water containing a stabilizing component selected from the group consisting of non-ionic and ionic water soluble polymeric stabilizers to obtain a suspension of particles with an average diameter of from about 0.1 to about 10 microns; polymerizing the resulting suspension to form said polymer.

    8.
    发明专利
    未知

    公开(公告)号：ES2153388T3

    公开(公告)日：2001-03-01

    申请号：ES93923185

    申请日：1993-10-01

    Applicant: XEROX CORP

    Inventor： GEORGES MICHAEL K ,  VEREGIN RICHARD P N ,  KAZMAIER PETER M ,  HAMER GORDON K

    IPC: C08F2/00 ,  C08F2/38 ,  C08F4/00 ,  C08F4/04 ,  C08F4/28 ,  C08F4/42 ,  C08F293/00 ,  C08F297/00 ,  G03G9/08 ,  G03G9/087 ,  C08F299/00 ,  C08F291/00

    Abstract: Disclosed is a free radical polymerization process for the preparation of a thermoplastic resin or resins comprising heating a mixture of a free radical initiator, a stable free radical agent, and at least one polymerizable monomer compound to form a thermoplastic resin or resins with a high monomer to polymer conversion; cooling said mixture; optionally isolating the thermoplastic resin or resins; and optionally washing and drying thermoplastic resin or resins. Related free radical processes are also disclosed for the preparation of mixtures and block copolymer thermoplastic resins. Resins prepared by the disclosed processes possesses a narrow polydispersity and a modality that is controlled by the selection of a free radical initiator and stable free radical agent addition step or steps.

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