公开(公告)号：US20120059110A1

公开(公告)日：2012-03-08

申请号：US13203886

申请日：2010-03-09

申请人： Michel Duc ,  Jan Neelen ,  Mark O'Neill

发明人： Michel Duc ,  Jan Neelen ,  Mark O'Neill

IPC分类号： C08L21/00

CPC分类号： C08L25/06 ,  C08F2/38 ,  C08F12/08 ,  C08F279/02 ,  C08L51/04 ,  F25D23/066 ,  F25D23/08

摘要： The present invention is a refrigerator interior liner made of a rubber modified monovinylaromatic polymer composition comprising:a) a monovinylaromatic polymer matrix having an average molecular weight in weight Mw above 150,000 g/mol, b) rubber particles dispersed therein, said particles having: a volume median particle size (RPS volume) of about 8.5 μm, a monomodal distribution with essentially no shoulder, a low-to-moderate crosslinking of the rubber expressed as a swell index (SI) above 13.8, a rubber phase volume fraction (RPVF) of at least 39%, c) a moderate amount of low- Mw plasticizers, defined as the weight fraction of solubles in methanol, and such that the weight ratio c/(a+b+c) ranges from 0 to 5%. The present invention is also a process for preparing the above composition comprising:a) forming a polymerizable mixture comprising at least one monovinylaromatic monomer and optionally one or more comonoiners, b) dissolving at least a viscous rubber of essentially linear structure in said polymerizable mixture to form a rubber containing polymerizable solution, c) contacting a free radical initiator and a chain transfer agent with the polymerizable mixture at conditions whereby phase inversion subsequently occurs, wherein the chain transfer agent is capable to produce an increase of the rubber to PS phase viscosity ratio within the inversion reactor, d) continuing the polymerization of the solution obtained at step c), optionally in the presence of a free radical initiator, until a monovinylaromatic polymer matrix having rubber particles dispersed therein is obtained.

摘要翻译： 本发明是一种由橡胶改性单乙烯基芳族聚合物组合物制成的冰箱内衬，其包含：a）平均分子量Mw大于150,000g / mol的单乙烯基芳族聚合物基质，b）分散在其中的橡胶颗粒，所述颗粒具有： 体积中值粒径（RPS体积）约8.5μm，基本上没有肩部的单峰分布，以膨胀指数（SI）高于13.8表示的橡胶的低至中等交联，橡胶相体积分数（RPVF） 至少39％，c）中等量的低Mw增塑剂，其定义为甲醇中可溶物的重量分数，并且使得重量比c /（a + b + c）为0至5％。 本发明还是一种制备上述组合物的方法，包括：a）形成包含至少一种单乙烯基芳族单体和任选的一种或多种共聚单体的可聚合混合物，b）将至少一种基本上线性结构的粘性橡胶溶解在所述可聚合混合物中至 形成含橡胶的可聚合溶液，c）在随后发生相转化的条件下使自由基引发剂和链转移剂与可聚合混合物接触，其中链转移剂能够使橡胶增加至PS相粘度比 在反转反应器内，d）任选地在自由基引发剂的存在下，继续聚合步骤c）获得的溶液，直到获得其中分散有橡胶颗粒的单乙烯基芳族聚合物基质。

公开(公告)号：US08785545B2

公开(公告)日：2014-07-22

申请号：US13203886

申请日：2010-03-09

申请人： Michel Duc ,  Jan Neelen ,  Mark O'Neill

发明人： Michel Duc ,  Jan Neelen ,  Mark O'Neill

IPC分类号： C08J3/22 ,  C08L9/00

CPC分类号： C08L25/06 ,  C08F2/38 ,  C08F12/08 ,  C08F279/02 ,  C08L51/04 ,  F25D23/066 ,  F25D23/08

摘要： A refrigerator interior liner can be made of a composition including a monovinylaromatic polymer matrix having an average molecular weight in weight Mw above 150,000 g/mol; rubber particles; and low- Mw plasticizers. The rubber particles can have an RPS volume of about 8.5 μm, a monomodal distribution, a swell index above 13.8, and an RPVF of at least 39%. The composition can be prepared by forming a polymerizable mixture including a monovinylaromatic monomer, and dissolving a viscous rubber in the polymerizable mixture. A free radical initiator and a chain transfer agent can be contacted with the polymerizable mixture at conditions whereby phase inversion subsequently occurs. The chain transfer agent can produce an increase of the rubber to PS phase viscosity ratio within the inversion reactor. Polymerization can be continued until a monovinylaromatic polymer matrix having rubber particles dispersed therein is obtained.

摘要翻译： 冰箱内衬可以由包含平均分子量Mw大于150,000g / mol的单乙烯基芳族聚合物基质的组合物制成; 橡胶颗粒; 和低Mw增塑剂。 橡胶颗粒可以具有约8.5μm的RPS体积，单峰分布，高于13.8的溶胀指数和至少39％的RPVF。 可以通过形成包含单乙烯基芳族单体的可聚合混合物，并将粘性橡胶溶解在可聚合混合物中来制备组合物。 在随后发生相转化的条件下，可以使自由基引发剂和链转移剂与可聚合混合物接触。 链转移剂可以在反应器内产生橡胶与PS相粘度比的增加。 可以继续聚合，直到获得具有分散有橡胶颗粒的单乙烯基芳族聚合物基质。

公开(公告)号：US09527993B2

公开(公告)日：2016-12-27

申请号：US13055014

申请日：2009-07-23

申请人： Michel Duc ,  Philippe Lodefier

发明人： Michel Duc ,  Philippe Lodefier

IPC分类号： C08L25/08 ,  C08L51/00 ,  C08F279/02 ,  C08F287/00 ,  C08L25/02 ,  C08L51/04 ,  C08L53/02 ,  C08L9/00 ,  C08L51/08 ,  C08L67/04

CPC分类号： C08L25/02 ,  C08F279/02 ,  C08F287/00 ,  C08L9/00 ,  C08L51/006 ,  C08L51/04 ,  C08L51/08 ,  C08L53/025 ,  C08L67/04 ,  C08L2666/02

摘要： A process to make a composition that includes a monovinylaromatic polymer and a dispersed phase of polymer made from renewable resources may include forming a polymerizable mixture. The polymerizable mixture may include a monomer or dimer dispersed in a monovinylaromatic monomer, and optionally a rubber dissolved in the monovinylaromatic monomer. The process may include contacting a catalyst with the polymerizable solution at conditions effective to produce a polymer dispersed in the monovinylaromatic monomer. The process may include polymerizing through a radical pathway the solution, optionally in the presence of a free radical initiator and a chain transfer agent, to obtain a monovinylaromatic polymer that includes a dispersed phase. The process may include degassing to separate unpolymerized monomers and comonomers, and recovering a composition of monovinylaromatic polymer.

摘要翻译： 制备包含单乙烯基芳族聚合物和由可再生资源制成的聚合物的分散相的组合物的方法可包括形成可聚合的混合物。 可聚合混合物可以包括分散在单乙烯基芳族单体中的单体或二聚体，以及任选的溶解在单乙烯基芳族单体中的橡胶。 该方法可以包括在有效产生分散在单乙烯基芳族单体中的聚合物的条件下使催化剂与可聚合溶液接触。 该方法可以包括通过自由基途径聚合溶液，任选地在自由基引发剂和链转移剂存在下，得到包括分散相的单乙烯基芳族聚合物。 该方法可以包括脱气以分离未聚合的单体和共聚单体，以及回收单乙烯基芳族聚合物的组合物。

公开(公告)号：US20120132845A1

公开(公告)日：2012-05-31

申请号：US13376619

申请日：2010-06-21

申请人： Philippe Lodefier ,  Stéphane Nowe ,  Jose M. Sosa ,  Michel Duc

发明人： Philippe Lodefier ,  Stéphane Nowe ,  Jose M. Sosa ,  Michel Duc

IPC分类号： E04B1/76

CPC分类号： C08J9/0066 ,  C08J9/0061 ,  C08J2201/03 ,  C08J2203/06 ,  C08J2203/14 ,  C08J2203/142 ,  C08J2325/14 ,  C08J2425/00

摘要： The present invention is an expandable vinyl aromatic polymer which comprises:a) a matrix of a branched aromatic ionomer,b) 1-10% by weight calculated with respect to the polymer (a), of an expanding agent englobed in the polymeric matrix,c) 0-20% by weight, calculated with respect to the polymer (a), of a filler homogeneously distributed in the polymeric matrix,in which,the branched aromatic ionomer comprises the product of co-polymerizing a first monomer comprising an aromatic moiety and an unsaturated alkyl moiety and a second monomer comprising an ionic moiety and at least two unsaturated moieties, wherein the ionic moiety has at least two ionizable groups, a cationic group that ionizes to form cations and an anionic group that ionizes to form anions, and wherein the cationic group is polyvalent and one capable of forming bridges to other molecules.The present invention also relates to the use of the expandable vinyl aromatic polymer to make expanded articles, in particular insulation boards.

摘要翻译： 本发明是一种可膨胀的乙烯基芳族聚合物，其包括：a）支化芳族离聚物的基质，b）相对于聚合物（a）计算的1-10重量％的聚合物基质中发泡剂， c）相对于聚合物（a）计算的均匀分布在聚合物基质中的填料为0-20重量％，其中，支化芳族离聚物包括使包含芳族部分的第一单体共聚的产物 和不饱和烷基部分和包含离子部分和至少两个不饱和部分的第二单体，其中所述离子部分具有至少两个可离子化基团，离子化以形成阳离子的阳离子基团和电离以形成阴离子的阴离子基团，以及 其中阳离子基团是多价的，并且能够与其它分子形成桥键。 本发明还涉及可膨胀乙烯基芳族聚合物制造膨胀制品，特别是绝缘板的用途。

公开(公告)号：US20100184919A1

公开(公告)日：2010-07-22

申请号：US12593957

申请日：2008-03-19

申请人： Michel Duc

发明人： Michel Duc

IPC分类号： C08L25/02 ,  C08L21/00 ,  C08L67/00

CPC分类号： C08L67/04 ,  C08F279/02 ,  C08F283/02 ,  C08F2438/02 ,  C08L25/00 ,  C08L25/06 ,  C08L51/08 ,  C08L2205/03 ,  C08F212/08 ,  C08L2666/04 ,  C08L2666/24 ,  C08L2666/14 ,  C08L2666/18 ,  C08L2666/02

摘要： The present invention concerns a monovinylaromatic polymer composition comprising a bio-sourced polymer dispersed phase and optionally a rubber dispersed phase wherein said bio-courced polymer dispersed phase is predominantly made of particles having a size of less than 10 μm. The present invention also relates to a process (hereunder referred as the first process) to make said monovinylaromatic polymer composition, said process comprising admixing: a monovinylaromatic monomer, at least one bio-sourced polymer, optionally a rubber, at conditions effective to polymerize at least a part of the monovinylaromatic monomer and generate a compatibilizer of the bio-sourced polymer and monovinylaromatic polymer. The present invention also relates to a process (hereunder referred as the second process) to make said monovinylaromatic polymer composition, said process comprising admixing: a monovinylaromatic monomer, functionalized bio-sourced polymer-s), or mixtures of bio-sourced polymer(s) and functionalized bio-sourced polymer(s), optionally a rubber, at conditions effective to polymerize at least a part of the monovinylaromatic monomer. The present invention also relates to a process (hereunder referred as the third process) to make said monovinylaromatic polymer composition, said process comprising blending in the molten state functionalized bio-sourced polymer(s) (or mixtures of bio-sourced polymer(s) and functionalized bio-sourced polymer(s)) with monovinylaromatic polymer, said monovinylaromatic polymer comprising optionally a rubber.

摘要翻译： 本发明涉及包含生物来源的聚合物分散相和任选的橡胶分散相的单乙烯基芳族聚合物组合物，其中所述生物聚合物分散相主要由尺寸小于10μm的颗粒制成。 本发明还涉及制备所述单乙烯基芳族聚合物组合物的方法（以下称为第一方法），所述方法包括将有效聚合的条件下的单乙烯基芳族单体，至少一种生物来源的聚合物，任选的橡胶混合 至少一部分单乙烯基芳族单体并产生生物来源的聚合物和单乙烯基芳族聚合物的增容剂。 本发明还涉及制备所述单乙烯基芳族聚合物组合物的方法（以下称为第二方法），所述方法包括混合：单乙烯基芳族单体，官能化生物来源的聚合物）或生物来源的聚合物 ）和官能化的生物来源的聚合物，任选的橡胶，在有效聚合至少一部分单乙烯基芳族单体的条件下。 本发明还涉及制备所述单乙烯基芳族聚合物组合物的方法（以下称为第三方法），所述方法包括在熔融状态下共混官能化的生物来源的聚合物（或生物来源的聚合物的混合物） 和官能化的生物来源的聚合物）与单乙烯基芳族聚合物，所述单乙烯基芳族聚合物任选地包括橡胶。

公开(公告)号：US20130289208A1

公开(公告)日：2013-10-31

申请号：US13847855

申请日：2013-03-20

申请人： Michel Duc

发明人： Michel Duc

IPC分类号： C08L67/04

CPC分类号： C08L67/04 ,  C08F279/02 ,  C08F283/02 ,  C08F2438/02 ,  C08L25/00 ,  C08L25/06 ,  C08L51/08 ,  C08L2205/03 ,  C08F212/08 ,  C08L2666/04 ,  C08L2666/24 ,  C08L2666/14 ,  C08L2666/18 ,  C08L2666/02

摘要： A monovinylaromatic polymer composition can include a bio-sourced polymer dispersed phase and optionally a rubber dispersed phase. The bio-sourced polymer dispersed phase can be predominantly made of particles having a size of less than 10 μm. The monovinylaromatic polymer composition can be made by admixing a monovinylaromatic monomer, bio-sourced polymer, and optionally rubber at conditions effective to polymerize at least a part of the monovinylaromatic monomer and generate a compatibilizer. The monovinylaromatic polymer composition can be made by admixing a monovinylaromatic monomer, functionalized bio-sourced polymer(s) or mixtures of bio-sourced polymer(s) and functionalized bio-sourced polymer(s), and optionally rubber at conditions effective to polymerize at least a part of the monovinylaromatic monomer. The monovinylaromatic polymer composition can be made by blending, in the molten state, functionalized bio-sourced polymer(s) or mixtures of bio-sourced polymer(s) and functionalized bio-sourced polymer(s) with monovinylaromatic polymer, and optionally rubber.

摘要翻译： 单乙烯基芳族聚合物组合物可以包括生物来源的聚合物分散相和任选的橡胶分散相。 生物来源的聚合物分散相主要由尺寸小于10um的颗粒制成。 单乙烯基芳族聚合物组合物可以通过在有效聚合至少一部分单乙烯基芳族单体并产生增容剂的条件下混合单乙烯基芳族单体，生物来源的聚合物和任选的橡胶来制备。 单乙烯基芳族聚合物组合物可以通过将单乙烯基芳族单体，官能化的生物来源的聚合物或生物来源的聚合物和官能化的生物来源的聚合物的混合物以及任选的橡胶在有效聚合在 至少一部分单乙烯基芳族单体。 单乙烯基芳族聚合物组合物可以通过在熔融状态下将官能化的生物来源的聚合物或生物来源的聚合物和官能化的生物来源的聚合物与单乙烯基芳族聚合物和任选的橡胶共混来制备。

公开(公告)号：US20100240832A1

公开(公告)日：2010-09-23

申请号：US12523877

申请日：2008-01-21

申请人： Michel Duc ,  Bruno Vuillemin ,  Denis Bertin ,  Sylvain Marque ,  Christophe Galindo

发明人： Michel Duc ,  Bruno Vuillemin ,  Denis Bertin ,  Sylvain Marque ,  Christophe Galindo

IPC分类号： C08F255/08

CPC分类号： C08F257/02 ,  C08F279/02

摘要： The present invention relates to a process for preparing a high impact monovinylaromatic polymer comprising admixing a rubber, at least one monovinylaromatic monomer and optionally one or more comonomer in the presence of at least a borane complex of the L-BH3 type wherein L is a Lewis base and polymerizing the monovinylaromatic monomer.The borane complex initiator, L may be an ether (e.g THF, tetrahydrofurane), a thioether (e.g dimethylthioether) or an amine. A preferred complex is an amine borane such as by way of example triethylamine borane.The present invention also relates to a high impact monovinylaromatic polymer having a weight ratio of grafted monovinylaromatic monomer and optional comonomer to the initial monovinylaromatic monomer and optional comonomer above 0.1%, advantageously above 2% and preferably in the range 2 to 4%.The invention is of particular interest to make high impact polystyrene.

摘要翻译： 本发明涉及一种制备高冲击单乙烯基芳族聚合物的方法，包括在至少一种L-BH3型的硼烷配合物存在下将橡胶，至少一种单乙烯基芳族单体和任选的一种或多种共聚单体混合，其中L是路易斯 碱化并聚合单乙烯基芳族单体。 硼烷络合物引发剂L可以是醚（例如THF，四氢呋喃），硫醚（例如二甲基硫醚）或胺。 优选的络合物是胺硼烷，例如通过例如三乙胺硼烷。 本发明还涉及具有接枝单乙烯基芳族单体和任选的共聚单体与初始单乙烯基芳族单体和任选的共聚单体的重量比高于0.1％，优选高于2％，优选2至4％的高冲击单乙烯基芳族聚合物。 制造高抗冲聚苯乙烯的本发明是特别有意义的。

公开(公告)号：US4682294A

公开(公告)日：1987-07-21

申请号：US661669

申请日：1984-10-17

申请人： Michel Duc ,  Philippe Montreuil ,  Jean-Jacques Meuleman

发明人： Michel Duc ,  Philippe Montreuil ,  Jean-Jacques Meuleman

IPC分类号： H02J1/00 ,  B60R16/02 ,  B60R16/03 ,  G06F1/18 ,  G06F1/26 ,  G06F11/20

CPC分类号： B60R16/0315 ,  B60R2016/0322 ,  Y10T307/461

摘要： The present invention provides a device for distributing electric energy between a current source and several groups of electric current consumers or peripherals P.sub.1, P.sub.2 . . . P.sub.n which is more particularly intended to be placed on board a motorized land, air or sea vehicle and comprises at least a first conductor for conveying the electric energy supplying the current consumers, at least a second conductor for conveying electric control signals and/or receiving information about the state of the current consumers, and at least one central control unit U.sub.1 comprising means for transmitting, receiving, storing and processing coded information for controlling the start up or shut down of the current consumers.In this device, each group of current consumers or peripherals comprise the same microprocessor or programmed means, with the same program and an address recognition circuit associated with this microprogrammed means allowing this latter to recognize itself.

摘要翻译： 本发明提供了一种用于在电流源和多组电流消耗器或外围设备P1，P2之间分配电能的装置。 。 。 Pn，其更特别地被放置在电动陆地，空中或海上车辆上，并且包括至少第一导体，用于传送供应当前消费者的电力，至少第二导体，用于传送电控制信号和/或接收 关于当前消费者的状态的信息，以及至少一个中央控制单元U1，其包括用于发送，接收，存储和处理用于控制当前消费者的启动或关闭的编码信息的装置。 在该装置中，每组当前消费者或外围设备包括相同的微处理器或编程装置，具有与该微程序装置相关联的相同程序和地址识别电路，以允许其识别自身。

公开(公告)号：US08575271B2

公开(公告)日：2013-11-05

申请号：US12593957

申请日：2008-03-19

申请人： Michel Duc

发明人： Michel Duc

IPC分类号： C08L25/00 ,  C08L67/04 ,  C08L51/08

CPC分类号： C08L67/04 ,  C08F279/02 ,  C08F283/02 ,  C08F2438/02 ,  C08L25/00 ,  C08L25/06 ,  C08L51/08 ,  C08L2205/03 ,  C08F212/08 ,  C08L2666/04 ,  C08L2666/24 ,  C08L2666/14 ,  C08L2666/18 ,  C08L2666/02

摘要： The present invention concerns a monovinylaromatic polymer composition comprising a bio-sourced polymer dispersed phase and optionally a rubber dispersed phase wherein said bio-sourced polymer dispersed phase is predominantly made of particles having a size of less than 10 μm. The present invention also relates to a process (hereunder referred as the first process) to make said monovinylaromatic polymer composition, said process comprising admixing: a monovinylaromatic monomer, at least one bio-sourced polymer, optionally a rubber, at conditions effective to polymerize at least a part of the monovinylaromatic monomer and generate a compatibilizer of the bio-sourced polymer and monovinylaromatic polymer. The present invention also relates to a process (hereunder referred as the second process) to make said monovinylaromatic polymer composition, said process comprising admixing: a monovinylaromatic monomer, functionalized bio-sourced polymer-s), or mixtures of bio-sourced polymer(s) and functionalized bio-sourced polymer(s), optionally a rubber, at conditions effective to polymerize at least a part of the monovinylaromatic monomer. The present invention also relates to a process (hereunder referred as the third process) to make said monovinylaromatic polymer composition, said process comprising blending in the molten state functionalized bio-sourced polymer(s) (or mixtures of bio-sourced polymer(s) and functionalized bio-sourced polymer(s)) with monovinylaromatic polymer, said monovinylaromatic polymer comprising optionally a rubber.

摘要翻译： 本发明涉及包含生物来源的聚合物分散相和任选的橡胶分散相的单乙烯基芳族聚合物组合物，其中所述生物来源的聚合物分散相主要由尺寸小于10um的颗粒制成。 本发明还涉及制备所述单乙烯基芳族聚合物组合物的方法（以下称为第一方法），所述方法包括将有效聚合的条件下的单乙烯基芳族单体，至少一种生物来源的聚合物，任选的橡胶混合 至少一部分单乙烯基芳族单体并产生生物来源的聚合物和单乙烯基芳族聚合物的增容剂。 本发明还涉及制备所述单乙烯基芳族聚合物组合物的方法（以下称为第二方法），所述方法包括混合：单乙烯基芳族单体，官能化生物来源的聚合物）或生物来源的聚合物 ）和官能化的生物来源的聚合物，任选的橡胶，在有效聚合至少一部分单乙烯基芳族单体的条件下。 本发明还涉及制备所述单乙烯基芳族聚合物组合物的方法（以下称为第三方法），所述方法包括在熔融状态下共混官能化的生物来源的聚合物（或生物来源的聚合物的混合物） 和官能化的生物来源的聚合物）与单乙烯基芳族聚合物，所述单乙烯基芳族聚合物任选地包括橡胶。

公开(公告)号：US20110224373A1

公开(公告)日：2011-09-15

申请号：US13055011

申请日：2009-07-28

申请人： Jean-Francois Carpentier ,  Sophie Guillaume ,  Marion Helou ,  Yann Sarazin ,  Michel Duc ,  Valentin Poirier

发明人： Jean-Francois Carpentier ,  Sophie Guillaume ,  Marion Helou ,  Yann Sarazin ,  Michel Duc ,  Valentin Poirier

IPC分类号： C08L53/00 ,  C08F293/00

CPC分类号： C08F293/005 ,  C08F293/00 ,  C08L53/00 ,  C08L2666/02 ,  C08L2666/24

摘要： The present invention is a process to make a composition comprising a block copolymer A-B and optionally a monovinylaromatic polymer, said process comprising: a) forming a mixture comprising: one or more cyclic component polymerizable by ring-opening polymerization (ROP) dispersed in at least one monovinylaromatic monomer, optionally a rubber dissolved in the monovinylaromatic monomer, b) contacting the mixture of step a) with a mixture of b1 and b2 such that: b1) is M[N(SiR83)2]x in which M is a metal, R8 is an hydrocarbon group and x is the valency of the metal M, or a metal alkoxide M(OR9)x in which M is a metal, R9 is an hydrocarbon group and x is the valency of the metal M, or phenol-based pro-ligands of formula wherein R1 is wherein m is 1, 2 or 3 and n≧1); R2 is hydrocarbyl group having 1 to 10 carbon atoms and is preferably selected from methyl, ethyl, iso-propyl, tert-butyl or neo-pentyl; R3 is the same as R1 or is hydrocarbyl group having 1 to 20 carbon atoms and is preferably alkyl selected from methyl, ethyl, iso-propyl, tert-butyl, neo-pentyl, cumyl, trityl or aryl selected from phenyl, 2,4,6-trimethylphenyl, 2,6-diisopropylphenyl, or a mixture thereof, or triazabicyclodecene (TBD), or a single-site metal catalyst component based upon a bulky β-diiminate ligands (BDI), represented by the following general formula: wherein R1, R2, R3, R4, R5, R6 and R7 are each independently selected from hydrogen, unsubstituted or substituted hydrocarbyl, or inert functional group and wherein two or more of said groups can be linked together to form one or more rings, wherein X is an hydrocarbyl radical having from 1 to 12 carbon atoms, an alkoxide group OR*, an amido group NR**2 or a borohydride group (BH4) wherein M is a metal, b2) a functional alcohol containing, besides its —OH function, another functionality Y enabling the growth or the grafting of a polyvinylaromatic, at conditions effective to produce by ROP of the cyclic component a block polymer A, having an —OH end and another function Y, dispersed in the monovinylaromatic monomer, wherein the molar ratio OH/b1 of the alcohol function in b2 to b1 ranges from 2 to 50, c) polymerizing the solution obtained at step b) optionally in the presence of a free radical initiator, optionally in the presence of chain transfer agents, at conditions effective to produce: a monovinylaromatic block polymer B linked to the block polymer A by the aforementioned functionality Y such that H-A-O—R—Y—B or H-A-O—R—B—Y (referred in both cases as A-B to simplify) in which R is a linking group, optionally a monovinylaromatic polymer, d) optionally degassing the product of step c) to separate the optional unpolymerized monomers and comonomers and recovering optionally a composition comprising at least the block copolymer A-B, optionally a monovinylaromatic polymer and optionally a rubber. In another embodiment b1 doesn't comprise the metal alkoxide M(OR9)x and there is no ratio OH/b1.