Heat-seal resin and package formed therefrom
    3.
    发明授权
    Heat-seal resin and package formed therefrom 有权
    热封树脂和由此形成的包装

    公开(公告)号:US08173748B1

    公开(公告)日:2012-05-08

    申请号:US12972035

    申请日:2010-12-17

    CPC分类号: C08L23/142 C08L2205/025

    摘要: Provided is a heat-seal resin. The resin includes 5 wt % to 95 wt % of a first copolymer and 95 wt % to 5 wt % of a second copolymer based on the total weight of the resin. The first copolymer and the second copolymer together are 90 wt % or more of the total weight of the resin. The first copolymer includes a first monomer of an alphaolefin of 2 to 4 carbon atoms and a second monomer selected from a second monomer of an alphaolefin of 2 to 8 carbon atoms. The first monomer and the second monomer of the first copolymer are different. The first copolymer has an MFR of from 5 to 1000 g/10 minutes and a Tfm of 66° C. to 80° C. The second copolymer includes a first monomer of an alphaolefin of 2 to 4 carbon atoms and a second monomer selected from a second monomer of an alphaolefin of 2 to 8 carbon atoms. The first monomer and the second monomer of the second copolymer are different. The second copolymer has an MFR of from 0.5 to 5 g/10 minutes and a Tfm of 45° C. to 66° C., wherein the first copolymer has an MFR of at least 2 g/10 minutes greater and a Tfm of at least 10° C. greater than the second copolymer. There is also a package formed partly or entirely of the resin.

    摘要翻译: 提供一种热封树脂。 基于树脂的总重量,树脂包含5重量%至95重量%的第一共聚物和95重量%至5重量%的第二共聚物。 第一共聚物和第二共聚物一起是树脂总重量的90重量%以上。 第一共聚物包括2至4个碳原子的α-烯烃的第一单体和选自2至8个碳原子的α-烯烃的第二单体的第二单体。 第一共聚物的第一单体和第二单体是不同的。 第一共聚物的MFR为5至1000g / 10分钟,Tfm为66℃至80℃。第二共聚物包括第一单体,其具有2至4个碳原子的α-烯烃,第二单体选自 2至8个碳原子的α-烯烃的第二单体。 第二共聚物的第一单体和第二单体是不同的。 第二共聚物的MFR为0.5〜5g / 10分钟,Tfm为45〜66℃,其中第一共聚物的MFR为2g / 10分钟以上, 比第二共聚物大至少10℃。 还有一部分或全部由树脂形成的包装。

    Bulk homogeneous polymerization process for ethylene propylene copolymers
    4.
    发明授权
    Bulk homogeneous polymerization process for ethylene propylene copolymers 有权
    乙烯丙烯共聚物的均匀聚合方法

    公开(公告)号:US07910679B2

    公开(公告)日:2011-03-22

    申请号:US12291898

    申请日:2008-11-14

    IPC分类号: C08F2/02 C08F210/06 C08F4/643

    摘要: Provided are bulk homogeneous polymerization processes for producing ethylene propylene random copolymers. The process includes contacting in a reactor or in a series of reactors propylene monomer, ethylene comonomer with one or more catalyst systems and optional solvent (present at less than 40 wt %), wherein the reactor train is at a temperature of between 65° C. and 180° C. and at a pressure no lower than 10 MPa below the cloud point pressure of the polymerization system and less than 1500 MPa, and wherein the polymerization system for the reactor train is in its dense fluid state to form a polymer reactor effluent including a homogeneous fluid phase polymer-monomer mixture in the reactor train; and wherein the resultant copolymer product comprises between 10 wt % and 20 wt % randomly distributed ethylene and the concentration of total region defects in the continuous propylene segments of the random EP copolymer is between 40 and 150% greater than in a copolymer of equivalent melt flow rate and wt % ethylene polymerized by a solution polymerization process.

    摘要翻译: 提供用于生产乙烯丙烯无规共聚物的本体均相聚合方法。 该方法包括使反应器或一系列反应器中的丙烯单体,乙烯共聚单体与一种或多种催化剂体系和任选的溶剂(以小于40wt%存在)接触,其中反应器系在65℃ 并且在低于聚合体系的浊点压力不低于10MPa的压力下低于1500MPa,并且其中反应器系列的聚合系统处于其致密的流体状态以形成聚合物反应器 流出物包括在反应器系列中的均相流体相聚合物 - 单体混合物; 并且其中所得共聚物产物包含10重量%至20重量%的随机分布的乙烯,并且随机EP共聚物的连续丙烯链段中总区域缺陷的浓度比当量熔体流动的共聚物中的区域间缺陷的浓度高40至150% 速率和wt%乙烯通过溶液聚合方法聚合。

    In-line process for producing plasticized polymers and plasticized polymer blends
    5.
    发明授权
    In-line process for producing plasticized polymers and plasticized polymer blends 有权
    用于生产增塑聚合物和增塑聚合物共混物的在线方法

    公开(公告)号:US07928162B2

    公开(公告)日:2011-04-19

    申请号:US12283045

    申请日:2008-09-09

    IPC分类号: C08F2/12 C08F6/00 C08L23/02

    摘要: A process for fluid phase in-line blending of plasticized polymers is provided. The process includes providing two or more reactor trains configured in parallel and a separator for product blending and product-feed separation, wherein one or more of the reactor trains produces one or more polymers and one or more of the reactor trains produces one or more plasticizers; contacting in at least one of the parallel reactor trains olefin monomers, catalyst systems, optional comonomers, optional scavengers, and optional diluents or solvents, at a temperature above the solid-fluid phase transition temperature of the polymerization system and a pressure no lower than 10 MPa below the cloud point pressure of the polymerization system and less than 1500 MPa; forming a reactor effluent including a homogeneous fluid phase polymer-monomer mixture and plasticizer-monomer mixture in each parallel reactor train; passing the reactor effluents through the separator; maintaining the temperature and pressure within the separator above the solid-fluid phase transition point but below the cloud point pressure and temperature to form a fluid-fluid two-phase system including a plasticized polymer-rich blend phase and a monomer-rich phase; and separating the monomer-rich phase from the plasticized polymer-rich blend phase. The polymer-rich blend phase is conveyed to a downstream finishing stage for further monomer stripping, drying and/or pelletizing to form a plasticized polymer product blend. Suitable plasticizers for in-line production and blending include polyalphaolefin oligomers, polybutenes, low glass transition temperature polymers and combinations thereof.

    摘要翻译: 提供了一种用于增塑聚合物的流体相在线共混的方法。 该方法包括提供并联配置的两个或多个反应器列和用于产物共混和产物 - 进料分离的分离器,其中一个或多个反应器列产生一种或多种聚合物,并且一个或多个反应器列产生一种或多种增塑剂 ; 在高于聚合体系的固体 - 流体相转变温度的温度下,在至少一个平行反应器系列烯烃单体,催化剂体系,任选的共聚单体,任选的清除剂和任选的稀释剂或溶剂中接触,并且压力不低于10 MPa低于聚合体系的浊点压力,小于1500MPa; 在每个平行的反应器列中形成包含均相流体相聚合物 - 单体混合物和增塑剂 - 单体混合物的反应器流出物; 使反应器流出物通过分离器; 将分离器内的温度和压力保持在固体 - 流体相转变点之上但低于浊点压力和温度,以形成包括增塑的富含聚合物的共混相和富单体相的流体 - 流体两相系统; 并将富单体相与增塑的富聚合物相分离。 富含聚合物的共混相被输送到下游整理阶段以用于进一步的单体汽提,干燥和/或造粒以形成增塑的聚合物产物混合物。 用于在线生产和共混的合适的增塑剂包括聚α-烯烃低聚物,聚丁烯,低玻璃化转变温度聚合物及其组合。

    Process for fluid phase in-line blending of polymers
    9.
    发明授权
    Process for fluid phase in-line blending of polymers 有权
    流体相在线共混聚合物的方法

    公开(公告)号:US08143352B2

    公开(公告)日:2012-03-27

    申请号:US12002509

    申请日:2007-12-17

    IPC分类号: C08F2/04 C08F2/06

    摘要: A process for fluid phase in-line blending of polymers. The process includes providing two or more reactor trains configured in parallel and a separator for product blending and product-feed separation; contacting in at least one of the parallel reactor trains olefin monomers having three or more carbon atoms, catalyst systems, optional comonomers, optional scavengers, and optional inert diluents or inert solvents, at a temperature above the solid-fluid phase transition temperature of the polymerization system and a pressure no lower than 10 MPa below the cloud point pressure of the polymerization system and less than 1500 MPa; forming a reactor effluent including a homogeneous fluid phase polymer-monomer mixture in each parallel reactor train; combining the reactor effluent from each parallel reactor; passing the combined reactor effluent through the separator; maintaining the temperature and pressure within the separator above the solid-fluid phase transition point but below the cloud point pressure and temperature to form a fluid-fluid two-phase system including a polymer-rich blend phase and a monomer-rich phase; and separating the monomer-rich phase from the polymer-rich blend phase. The separated monomer-rich phase is recycled to the polymerization reactor bank. The polymer-rich blend phase is conveyed to a downstream finishing stage for further monomer stripping, drying and/or pelletizing to form a polymer product blend.

    摘要翻译: 流体相在线共混聚合物的方法。 该方法包括提供两个或更多个平行配置的反应器列和用于产物混合和产物进料分离的分离器; 在高于聚合物的固体 - 流体相转变温度的温度下,在至少一个平行的反应器列中具有三个或更多个碳原子的烯烃单体,催化剂体系,任选的共聚单体,任选的清除剂和任选的惰性稀释剂或惰性溶剂接触 系统,低于聚合体系浊点压力10MPa以下的压力小于1500MPa; 在每个平行的反应器列中形成包含均相流体相聚合物 - 单体混合物的反应器流出物; 将来自每个平行反应器的反应器流出物混合; 将合并的反应器流出物通过分离器; 将分离器内的温度和压力保持在固体 - 流体相转变点之上但低于浊点压力和温度,以形成包括富含聚合物的共混相和富单体相的流体 - 流体两相系统; 并从富含聚合物的混合相中分离富含单体的相。 将分离的富单体相再循环至聚合反应器组。 将富含聚合物的共混相输送到下游整理阶段以进一步进行单体汽提,干燥和/或造粒以形成聚合物产物共混物。

    Process for feeding ethylene to polymerization reactors
    10.
    发明授权
    Process for feeding ethylene to polymerization reactors 有权
    将乙烯供给聚合反应器的方法

    公开(公告)号:US08399586B2

    公开(公告)日:2013-03-19

    申请号:US12584338

    申请日:2009-09-03

    摘要: A process for feeding ethylene into a polymerization system includes providing a low-pressure ethylene stream, one or more low-pressure C3 to C20 monomer streams, an optional low-pressure inert solvent/diluent stream, and one or more reactors; metering the low-pressure ethylene stream, the one or more low-pressure C3 to C20 monomer streams, and the optional low-pressure inert solvent/diluent stream; blending the metered low-pressure ethylene stream, the metered one or more low-pressure C3 to C20 monomer streams, and the metered low-pressure optional inert solvent/diluent stream to form an ethylene-carrying low-pressure blended liquid feed stream; pressurizing the ethylene-carrying low-pressure blended liquid feed stream to the polymerization system pressure with one or more high-pressure pumps to thrm an ethylene-carrying high-pressure blended reactor feed stream; and feeding the ethylene-carrying high-pressure blended reactor feed stream to the one or more reactors.

    摘要翻译: 将乙烯进料到聚合体系中的方法包括提供低压乙烯流,一种或多种低压C3至C20单体流,任选的低压惰性溶剂/稀释剂流和一个或多个反应器; 计量低压乙烯流,一个或多个低压C3至C20单体流和任选的低压惰性溶剂/稀释剂流; 混合计量的低压乙烯流,计量的一个或多个低压C3至C20单体流和计量的低压可选惰性溶剂/稀释剂流,以形成携带乙烯的低压混合液体进料流; 使用一个或多个高压泵将携带乙烯的低压混合液体进料流加压至聚合系统压力以加入携带乙烯的高压共混反应器进料流; 并将含乙烯的高压共混反应器进料流输送到一个或多个反应器。