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    Silica supported transition metal catalyst
    3.
    发明授权
    Silica supported transition metal catalyst 失效
    二氧化硅负载过渡金属催化剂

    公开(公告)号：US5231151A

    公开(公告)日：1993-07-27

    申请号：US854175

    申请日：1992-03-20

    申请人： Lee Spencer ,  Brian W. S. Kolthammer ,  Miriam P. Ripplinger ,  Jeffrey J. Wooster ,  Pak-Wing S. Chum ,  Jacquelyn A. deGroot

    发明人： Lee Spencer ,  Brian W. S. Kolthammer ,  Miriam P. Ripplinger ,  Jeffrey J. Wooster ,  Pak-Wing S. Chum ,  Jacquelyn A. deGroot

    IPC分类号： C08J5/18 ,  B29C55/02 ,  B29K23/00 ,  B29L7/00 ,  C08F4/646 ,  C08F4/658 ,  C08F4/685 ,  C08F10/00 ,  C08F210/00 ,  C08F210/02 ,  C08F210/16

    CPC分类号： C08F10/00 ,  Y10S428/91 ,  Y10T428/26 ,  Y10T428/31855

    摘要： A transition metal containing catalyst useful for the polymerization of .alpha.-olefins is prepared by (A) forming in an inert atmosphere which excludes oxygen and moisture a slurry of (1) a porous inorganic oxide support material selected from the group consisting of silica, alumina, or a combination of silica and alumina, said support material containing not greater than about 5 millimoles of hydroxyl groups per gram of support material and a particle size not greater than about 10 microns and a surface area of from about 50 to about 800 m.sup.2 /g in an inert organic liquid medium; (B) mixing said slurry with (2) an alkoxide and stirring the resultant mixture at a temperature of from about -20.degree. C. to about 120.degree. C. for a time sufficient to saturate the surface of the support material; (C) mixing the product form (B) with (3) a titanium compound or a combination of a titanium compound and (4) a vanadium compound and stirring the resultant mixture at a temperature of from about -20.degree. C. to about 120.degree. C. for a time sufficient to allow complete reaction of the titanium compound and the vanadium compound with the organomagnesium moieties remaining on the solid support; (D) mixing the product from (C) with an inert organic solution of (5) a Group IIIA metal alkyl halide at a temperature of from about -20.degree. C. to about 120.degree. C. for a time sufficient to complete the reduction of the titanium and vanadium, if present, compounds to their final oxidation state.

    摘要翻译： 用于α-烯烃聚合的含过渡金属的催化剂通过以下步骤制备：（A）在惰性气氛中形成不含氧和水分的淤浆（1）多孔无机氧化物载体材料，其选自二氧化硅，氧化铝 ，或二氧化硅和氧化铝的组合，所述载体材料每克载体材料含有不大于约5毫摩尔羟基，粒度不大于约10微米，表面积为约50至约800平方米/ g在惰性有机液体介质中; （B）将所述浆料与（2）醇盐混合并在约-20℃至约120℃的温度下搅拌所得混合物足以使载体材料表面饱和的时间; （C）将产品形式（B）与（3）钛化合物或钛化合物和（4）钒化合物的组合混合并在约-20℃至约120℃的温度下搅拌所得混合物 在足以允许钛化合物和钒化合物与残留在固体载体上的有机镁部分完全反应的时间; （D）将来自（C）的产物与（5）IIIA族金属烷基卤的惰性有机溶液在约-20℃至约120℃的温度下混合足以完成还原的时间 的钛和钒（如果存在）化合物达到其最终氧化态。

    Modified atmosphere films useful in the packaging of perishable food
    6.
    发明授权
    Modified atmosphere films useful in the packaging of perishable food 失效
    用于易腐食品包装的改性气氛膜

    公开(公告)号：US6086967A

    公开(公告)日：2000-07-11

    申请号：US744548

    申请日：1996-11-06

    申请人： Nicole F. Whiteman ,  Gina L. Young ,  Jeffrey J. Wooster

    发明人： Nicole F. Whiteman ,  Gina L. Young ,  Jeffrey J. Wooster

    IPC分类号： A23B7/00 ,  B32B27/32 ,  B65D65/40 ,  B65D81/20 ,  C08J5/18 ,  C08L23/06 ,  C08L23/08 ,  C08L23/10 ,  B32B7/02 ,  C08L23/04

    CPC分类号： C08J5/18 ,  B32B27/32 ,  B65D81/2084 ,  C08L23/0815 ,  C08J2323/04 ,  C08J2323/10 ,  C08L23/10 ,  C08L2314/06 ,  Y10S526/943 ,  Y10T428/1328 ,  Y10T428/1334 ,  Y10T428/1345 ,  Y10T428/1352

    摘要： The subject invention pertains to a film structure suitable for the packaging of perishable food, comprising at least one film layer which in turn comprises a blend of at least one homogeneous linear or substantially linear ethylene polymer and at least one polypropylene polymer, wherein the film structure is characterized as having a 2% secant modulus which is at least 8% greater than a comparable film structure prepared without the polypropylene polymer, an oxygen transmission rate of at least 700 cc(at STP)-mil/100 in..sup.2 -day-atm at 25.degree. C. The inventive film structures exhibit an optimized balance of properties, making them especially useful in modified atmosphere packages for perishable goods. The inventive films are particularly suited for the packaging of fresh fruits, vegetables, and other perishable items which would benefit from controlled access to environmental oxygen.

    摘要翻译： 本发明涉及适用于易腐食品包装的薄膜结构，该薄膜结构包括至少一个薄膜层，薄膜层又包含至少一种均匀的直链或基本上线性的乙烯聚合物与至少一种聚丙烯聚合物的共混物，其中薄膜结构 其特征在于具有比不用聚丙烯聚合物制备的相当的薄膜结构大至少8％的2％正割模量，至少700cc（STP）的氧气透过率-mil / 100in.2天 - 大气压在25℃。本发明的薄膜结构表现出优化的性能平衡，使得它们在易腐货物的改性气氛包装中特别有用。 本发明的薄膜特别适用于新鲜水果，蔬菜和其他易受腐蚀物品的包装，这些物品将受到受控制的环境氧气的使用。

    Silica supported transition metal catalyst
    7.
    发明授权
    Silica supported transition metal catalyst 失效
    二氧化硅负载过渡金属催化剂

    公开(公告)号：US5487938A

    公开(公告)日：1996-01-30

    申请号：US336947

    申请日：1994-11-10

    申请人： Lee Spencer ,  Brian W. S. Kolthammer ,  Miriam P. Ripplinger ,  Jeffrey J. Wooster ,  Pak-Wing S. Chum ,  Jacquelyn A. deGroot

    发明人： Lee Spencer ,  Brian W. S. Kolthammer ,  Miriam P. Ripplinger ,  Jeffrey J. Wooster ,  Pak-Wing S. Chum ,  Jacquelyn A. deGroot

    IPC分类号： C08J5/18 ,  B29C55/02 ,  B29K23/00 ,  B29L7/00 ,  C08F4/646 ,  C08F4/658 ,  C08F4/685 ,  C08F10/00 ,  C08F210/00 ,  C08F210/02 ,  C08F210/16 ,  B32B7/12

    CPC分类号： C08F10/00 ,  Y10S428/91 ,  Y10T428/26 ,  Y10T428/31855

    摘要： A transition metal containing catalyst useful for the polymerization of .alpha.-olefins is prepared by (A) forming in an inert atmosphere which excludes oxygen and moisture a slurry of (1) a porous inorganic oxide support material selected from the group consisting of silica, alumina, or a combination of silica and alumina, said support material containing not greater than about 5 millimoles of hydroxyl groups per gram of support material and a particle size not greater than about 10 microns and a surface area of from about 50 to about 800 m.sup.2 /g in an inert organic liquid medium; (B) mixing said slurry with (2) an alkoxide and stirring the resultant mixture at a temperature of from about -20.degree. C. to about 120.degree. C. for a time sufficient to saturate the surface of the support material; (C) mixing the product form (B) with (3) a titanium compound or a combination of a titanium compound and (4) a vanadium compound and stirring the resultant mixture at a temperature of from about -20.degree. C. to about 120.degree. C. for a time sufficient to allow complete reaction of the titanium compound and the vanadium compound with the organomagnesium moieties remaining on the solid support; (D) mixing the product from (C) with an inert organic solution of (5) a Group IIIA metal alkyl halide at a temperature of from about -20.degree. C. to about 120.degree. C. for a time sufficient to complete the reduction of the titanium and vanadium, if present, compounds to their final oxidation state. Ethylene/alpha-olefin copolymers which have greater than 17 percent high density fraction and a M.sub.w /M.sub.n ratio of less than about 3.6 are shown to be useful in making cast films which have good stretchability and good puncture resistance. Copolymers of the present invention having the specified properties are especially useful in making the films.

    摘要翻译： 用于α-烯烃聚合的含过渡金属的催化剂通过以下步骤制备：（A）在惰性气氛中形成不含氧和水分的淤浆（1）多孔无机氧化物载体材料，其选自二氧化硅，氧化铝 ，或二氧化硅和氧化铝的组合，所述载体材料每克载体材料含有不大于约5毫摩尔羟基，粒度不大于约10微米，表面积为约50至约800平方米/ g在惰性有机液体介质中; （B）将所述浆料与（2）醇盐混合并在约-20℃至约120℃的温度下搅拌所得混合物足以使载体材料表面饱和的时间; （C）将产品形式（B）与（3）钛化合物或钛化合物和（4）钒化合物的组合混合并在约-20℃至约120℃的温度下搅拌所得混合物 在足以允许钛化合物和钒化合物与残留在固体载体上的有机镁部分完全反应的时间; （D）将来自（C）的产物与（5）IIIA族金属烷基卤的惰性有机溶液在约-20℃至约120℃的温度下混合足以完成还原的时间 的钛和钒（如果存在）化合物达到其最终氧化态。 显示出具有大于17％的高密度分数和小于约3.6的Mw / Mn比的乙烯/α-烯烃共聚物可用于制备具有良好的拉伸性和良好的耐穿刺性的流延薄膜。 具有特定性质的本发明的共聚物在制备膜中特别有用。

    Film layers made from ethylene polymer blends
    9.
    发明授权
    Film layers made from ethylene polymer blends 有权
    由乙烯聚合物共混物制成的薄膜层

    公开(公告)号：US07659343B2

    公开(公告)日：2010-02-09

    申请号：US10560323

    申请日：2004-06-02

    申请人： Jeffrey J. Wooster ,  Thomas Oswald ,  Staci A. DeKunder ,  Jesus Nieto

    发明人： Jeffrey J. Wooster ,  Thomas Oswald ,  Staci A. DeKunder ,  Jesus Nieto

    IPC分类号： C08L23/04 ,  C08L23/08 ,  C08J5/18 ,  B32B27/32

    CPC分类号： B32B27/08 ,  B32B27/32 ,  B32B2307/31 ,  C08L23/04 ,  C08L23/0815 ,  C08L2205/02 ,  C08L2666/06

    摘要： Film layers made from formulated ethylene polymer compositions are disclosed. Film layers made from such formulated compositions have surprisingly good heat seal properties, and an especially good reduction in heat seal initiation temperature. The ethylene polymer compositions have at least one homogeneously branched ethylene/alpha-olefin interpolymer and at least one homogeneously or heterogeneously branched ethylene polymer which has a lower melt index than the first mentioned component. The first homogeneously branched ethylene/alpha-olefin interpolymer has a melt index higher than that of the formulated composition.

    摘要翻译： 公开了由配制的乙烯聚合物组合物制成的薄膜层。 由这种配制的组合物制成的膜层具有惊人的良好的热封性能，并且特别好的热封起始温度的降低。 乙烯聚合物组合物具有至少一种均匀支化的乙烯/α-烯烃互聚物和至少一种均匀或不均匀支化的乙烯聚合物，其熔体指数低于前述组分。 第一种均匀支化的乙烯/α-烯烃互聚物的熔体指数高于配制的组合物。

    Silica supported transition metal catalyst
    10.
    发明授权
    Silica supported transition metal catalyst 失效
    二氧化硅负载过渡金属催化剂

    公开(公告)号：US06747113B1

    公开(公告)日：2004-06-08

    申请号：US09715566

    申请日：2000-11-17

    申请人： Lee Spencer ,  Miriam P. Ripplinger ,  Brian W. S. Kolthammer ,  Jeffrey J. Wooster

    发明人： Lee Spencer ,  Miriam P. Ripplinger ,  Brian W. S. Kolthammer ,  Jeffrey J. Wooster

    IPC分类号： C08F21000

    CPC分类号： C08F10/00 ,  C08F110/02 ,  C08L23/04 ,  C08L23/0815 ,  C08L2205/02 ,  C08L2205/025 ,  C08L2308/00 ,  C08L2314/02 ,  C08F4/6555 ,  C08F4/6357 ,  C08L2666/04 ,  C08F2500/08 ,  C08F2500/12 ,  C08F2500/24

    摘要： A polymer produced by a transition metal containing catalyst useful for the polymerization of &agr;-olefins is prepared by (A) forming in an inert atmosphere which excludes oxygen and moisture a slurry of (1) a porous inorganic oxide support material selected from the group consisting of silica, alumina, or a combination of silica and alumina, said support material containing not greater than about 5 millimoles of hydroxyl groups per gram of support material and a particle size not greater than about 10 microns and a surface area of from about 50 to about 800 m2/g in an inert organic liquid medium; (B) mixing said slurry with (2) an alkoxide and stirring the resultant mixture at a temperature of from about −20° C. to about 120° C. for a time sufficient to saturate the surface of the support material; (C) mixing the product form (B) with (3) a titanium compound or a combination of a titanium compound and (4) a vanadium compound and stirring the resultant mixture at a temperature of from about −20° C. to about 120° C. for a time sufficient to allow complete reaction of the titanium compound and the vanadium compound with the organomagnesium moieties remaining on the solid support; (D) mixing the product from (C) with an inert organic solution of (5) a Group IIIA metal alkyl halide at a temperature of from about −20° C. to about 120° C. for a time sufficient to complete the reduction of the titanium and vanadium, if present, compounds to their final oxidation state. Ethylene/alpha-olefin copolymers which have greater than 17 percent high density fraction and a Mw/Mn ratio of less than about 3.6 are shown to be useful in making cast films which have good stretchability and good puncture resistance. Copolymers of the present invention having the specified properties are especially useful in making the films.

    摘要翻译： 由用于α-烯烃聚合的含过渡金属的催化剂制备的聚合物是通过（A）在惰性气氛中形成的，其中不包括氧气和水分，（1）多孔无机氧化物载体材料的浆料选自 的二氧化硅，氧化铝或二氧化硅和氧化铝的组合，所述载体材料每克载体材料含有不大于约5毫摩尔羟基，粒径不大于约10微米，表面积为约50至 在惰性有机液体介质中约800m 2 / g; （B）将所述浆料与（2）醇盐混合并在约-20℃至约120℃的温度下搅拌所得混合物足以使载体材料表面饱和的时间; （C）将产品形式（B）与（3）钛化合物或钛化合物和（4）钒化合物的组合混合并在约-20℃至约120℃的温度下搅拌所得混合物 在足以允许钛化合物和钒化合物与残留在固体载体上的有机镁部分完全反应的时间; （D）将来自（C）的产物与（5）IIIA族金属烷基卤的惰性有机溶液在约-20℃至约120℃的温度下混合足以完成还原的时间 的钛和钒（如果存在）化合物达到其最终氧化态。 显示出具有大于17％的高密度分数和小于约3.6的Mw / Mn比的乙烯/α-烯烃共聚物可用于制备具有良好的拉伸性和良好的耐穿刺性的流延薄膜。 具有特定性质的本发明的共聚物在制备膜中特别有用。