METAL COMPLEX COMPOSITIONS AND THEIR USE AS CATALYSTS TO PRODUCE POLYDIENES
    3.
    发明公开
    METAL COMPLEX COMPOSITIONS AND THEIR USE AS CATALYSTS TO PRODUCE POLYDIENES 审中-公开
    金属络合物和它们作为催化剂用于聚二烯烃生产

    公开(公告)号:EP1436332A2

    公开(公告)日:2004-07-14

    申请号:EP02782127.1

    申请日:2002-10-07

    IPC分类号: C08F4/00 C08F36/00

    CPC分类号: C08F36/04 C08F4/545

    摘要: This invention relates to metal complex compositions, their preparation and their use as catalysts to produce polymers of conjugated dienes through polymerization of conjugated diene monomers. The used metal complex compositions are transition metal compounds in combination with an activator compound, optionally with a transition metal halide compound and optionally a catalyst modifier and optionally an inorganic or organic support material. The metal complexes comprises metals of group 3 to 10 of the Periodic System of the Elements in combination with activators, and optionally transition metal halide compounds of groups 3 to 10 of the Periodic Table of the Elements including lanthanide metals and actinide metals and optionally, catalyst modifiers, especially Lewis acids and optionally an inorganic or organic support material .More in particular the invention relates metal complex compositions, their preparation and their use as catalysts to produce homopolymers of conjugated dienes, preferably, but not limited to, through polymerization of 1,3-butadiene or isoprene.

    EXTRUDED PRODUCTS FROM POLYETHYLENE TEREPHTHALATE WITH REDUCED ACETALDEHYDE CONTENT AND PROCESS OF THEIR PRODUCTION
    7.
    发明公开
    EXTRUDED PRODUCTS FROM POLYETHYLENE TEREPHTHALATE WITH REDUCED ACETALDEHYDE CONTENT AND PROCESS OF THEIR PRODUCTION 审中-公开
    EXTRUIERTE产品POLYETHYLENTERAPHTHALATE减量乙醛和制造工艺

    公开(公告)号:EP1196490A1

    公开(公告)日:2002-04-17

    申请号:EP00950271.7

    申请日:2000-06-29

    IPC分类号: C08K5/15 C08J3/205

    CPC分类号: C08K5/053 C08K5/098 C08L67/02

    摘要: Polyols with at least one primary hydroxy function and at least one other primary, secondary or tertiary hydroxy function in the 2 and/or 3 position are used as additives in concentrations from 50 ppm to 5,000 ppm in order to reduce the acetaldehyde content of extruded products of polyetheylene terephthalate. Sugar alcohols, such as sorbitol, mannitol or xylitol, are preferably used. Additionally, ionic compounds, preferably easily soluble ionic compounds, such as alkali compounds, can be admixed in amounts from 0.05 ppm to 50 ppm. According to the present invention, aqueous polyol solutions are sprayed onto polyethylene terephthalate pellets after polycondensation or after the second polycondensation stage, also known as solid state polymerization, or said pellets are produced through extrusion with a polyol content of less than or equal to 25 percent by weight, pelletized, and admixed as a masterbatch with a polyester prior to processing.

    SOFT AND FLEXIBLE FOAMS
    8.
    发明公开
    SOFT AND FLEXIBLE FOAMS 审中-公开
    柔软而有弹性泡沫

    公开(公告)号:EP1144489A2

    公开(公告)日:2001-10-17

    申请号:EP99961671.7

    申请日:1999-11-16

    IPC分类号: C08J9/00

    摘要: A soft foam having an Asker C hardness of less than about 65, comprising: (A) from 30 to 70 percent by weight (based on the combined weight of Components A and B) of one or more alkenyl aromatic polymers and wherein at least one of said alkenyl aromatic polymers has a molecular weight (Mw) of from 100,000 to 500,000; and (B) from 30 to 70 percent by weight (based on the combined weight of Components A and B) of one or more substantially random interpolymers having an I2 of 0.1 to 50g/10 min, an Mw/Mn of 1.5 to 20; comprising (1) from 8 to 45 mol percent of polymer units derived from: (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one aromatic vinyl or vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) from 55 to 92 mol percent of polymer units derived from at least one of ethylene and/or a C3-20 α-olefin; and (3) from 0 to 20 mol percent of polymer units derived from one or more of ethylenically unsaturated polymerizable monomers other than those derived from (1) and (2); and (C) optionally, one or more nucleating agents; and (D) optionally, one or more other additives; and (E) one or more blowing agents present in a total amount of from 0.4 to 5.0 gram-moles per kilogram (based on the combined weight of Components A and B).

    CLOSED CELL ALKENYL AROMATIC FOAM
    9.
    发明公开
    CLOSED CELL ALKENYL AROMATIC FOAM 审中-公开
    封闭的细胞烷基芳香泡沫

    公开(公告)号:EP1135431A2

    公开(公告)日:2001-09-26

    申请号:EP99968043.2

    申请日:1999-11-16

    IPC分类号: C08J9/00 C08L23/08 C08L25/06

    摘要: This invention pertains to a composition and a process for preparing a closed cell alkenyl aromatic polymer foam having enlarged cell size, comprising one or more alkenyl aromatic polymers, one or more substantially random interpolymers, one or more blowing agents having zero ozone depletion potential and optionally one or more co-blowing agents, and optionally, one or more nucleating agents and optionally, one or more other additives. This combination allows the manufacture of closed cell, low density alkenyl aromatic polymer foams of enlarged cell size, when blowing agents of relatively high nucleation potential are employed. When such blowing agents are used with alkenyl aromatic polymers in the absence of the substantially random interpolymers, small cell foams result.

    摘要翻译: 本发明涉及用于制备具有增大的泡孔尺寸的闭孔链烯基芳族聚合物泡沫的组合物和方法,其包含一种或多种链烯基芳族聚合物,一种或多种基本上无规的共聚体,一种或多种具有零臭氧消耗势的发泡剂和任选 一种或多种共发泡剂,以及任选的一种或多种成核剂和任选的一种或多种其他添加剂。 当采用具有相对高成核电势的发泡剂时,这种组合允许制造具有增大的泡孔尺寸的闭孔,低密度链烯基芳族聚合物泡沫。 当这种发泡剂与链烯基芳族聚合物在不存在基本上无规共聚体的情况下一起使用时,产生小泡孔泡沫。

    PROCESS FOR THE PRODUCTION OF LOW COLOR 2,3-EPOXYPROPYL TRIALKYLAMMONIUM HALIDE
    10.
    发明公开
    PROCESS FOR THE PRODUCTION OF LOW COLOR 2,3-EPOXYPROPYL TRIALKYLAMMONIUM HALIDE 有权
    工艺生产低有色2,3-环氧丙基三哈利德

    公开(公告)号:EP1112260A1

    公开(公告)日:2001-07-04

    申请号:EP99945046.3

    申请日:1999-08-12

    CPC分类号: C07D303/36 C08B31/125

    摘要: An aqueous solution of 2,3-Epoxypropyltrimethylammonium chloride having reduced color and method of preparation are disclosed. 2,3-Epoxypropyltrimethylammonium chloride is treated with sodium hypochlorite to reduce its color. 2-3-Epoxypropyltrimethylammonium chloride can be prepared via reaction of trimethylamine and epichlorohydrin. If desired, an aprotic solvent can be used. 2-3-Epoxypropyltrimethylammonium chloride formed in the resultant slurry, must then be isolated via known methods, such as evaporation, extraction, centrifugation, etc. depending upon the other constituents of the slurry and the residual epichlorohydrin removed. The final product is then treated with an effective amount of sodium hypochlorite. The obtained 2-3-Epoxypropyltrimethylammonium chloride then is used for, for example, color-sensitive applications such as to produce cationic starch for use in paper manufacture.