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12 条记录 (耗时 0.015 秒)

    FOAMING SYSTEM FOR RIGID URETHANE AND ISOCYANURATE FOAMS
    2.
    发明公开
    FOAMING SYSTEM FOR RIGID URETHANE AND ISOCYANURATE FOAMS 无效
    发泡剂SYSTEM FOR硬质聚氨酯和异氰脲酸酯泡沫。

    公开(公告)号：EP0575543A1

    公开(公告)日：1993-12-29

    申请号：EP92909234.0

    申请日：1992-02-11

    申请人： THE DOW CHEMICAL COMPANY

    发明人： SMITS, Guido, Freddy ,  THOEN, Johan, A. ,  GRÜNBAUER, Henri, J., M. ,  LIDY, Werner, A.

    IPC分类号： C08J9

    CPC分类号： C08J9/149 ,  C08J2375/04 ,  Y10S521/902

    摘要： On prépare des mousses à base de polyisocyanate possédant une dimension cellulaire uniformément fine, par réaction d'un polyisocyanate avec un composé réactif à l'isocyanate en présence d'un mélange d'eau et d'un agent soufflant comprenant: (a) 2-70 % molaires basés sur la totalité des moles des constituants (a) et (b) d'une substance différente de (b) et possédant un point d'ébullition situé entre 200K et 393K à 760 mm Hg et, quand le point d'ébullition est égal ou supérieur à 283K, un rapport du point d'ébullition de Kelvin au poids moléculaire supérieur à 1,7; et (b) 98-30 % molaires d'un mélange composé d'un constituant d'hydrocarbure (b1) contenant quatre atomes de carbone ou davantage et d'un constituant d'hydrocarbure polyfluoré (b2) possédant un point d'ébullition de Kelvin situé entre 283K et 393K à 760 mm Hg et un rapport du point d'ébullition de Kelvin au poids moléculaire inférieur ou égal à 1,7, le rapport molaire entre (b1) et (b2) étant de 5 à 95/95 à 5.

    COMPOSITION AND FILMS THEREOF
    5.
    发明公开
    COMPOSITION AND FILMS THEREOF 审中-公开
    组成及其薄膜

    公开(公告)号：EP1198512A1

    公开(公告)日：2002-04-24

    申请号：EP00941668.6

    申请日：2000-06-23

    申请人： THE DOW CHEMICAL COMPANY

    发明人： TAU, Li-Min ,  MADENJIAN, Lisa, S. ,  THOEN, Johan, A. ,  HOENIG, Wendy, D. ,  CHUM, Pak-Wing, S. ,  KAARTO, John

    IPC分类号： C08L23/10 ,  C08L23/04 ,  C08F8/34 ,  C08K5/43

    CPC分类号： C08J5/18 ,  C08F8/34 ,  C08J2323/10 ,  C08K5/43 ,  C08L23/0815 ,  C08L23/10 ,  C08F10/00 ,  C08L2666/04 ,  C08F110/06 ,  C08F110/02

    摘要： The present invention includes a composition comprising (a) at least one propylene polymer coupled by reaction with a coupling amount of poly(sulfonyl azide) sufficient to increase the melt strength of the propylene polymer before coupling at least 1.5 fold as compared with the resulting coupled propylene polymer; and (b) at least one ethylene polymer wherein the ethylene polymer is present in an amount sufficient to improve film mechanical properties of tear resistance in either the machine direction (MD) and cross direction (CD) as measured by the Elmendorf Tear method (ASTM D-1922) or dart impact strength as measured by the procedure of ASTM D-1709 or a modified method thereof in which the height from which the dart is dropped is decreased from 26' to 10.5' (0.66m to 0.27m) as compared with a film formed in the same manner using the coupled propylene polymer of (a) alone. Preferably, the propylene polymer is present in an amount of greater than 50 weight percent of the resulting composition and the ethylene polymer is present in an amount of from 5 to 49 weight percent. The invention also includes any blown film blown from a composition of the invention, particularly when blown on a high or low stalk extruder or coextruded as well as the process of blowing such a film. Further, the invention includes any article comprising a composition of the invention or comprising a film of the invention. Particular embodiments are those articles including an institutional liner, consumer liner, heavy duty shipping sack, produce bag, batch inclusion bag, pouch, grocery bag, merchandise bag, packaging, cereal liner, soft paper overwrap, multi-wall bag, lamination or combination thereof, including multiwall or multilayer configurations thereof. Further, the invention includes the use of a composition of the invention for making a blown film.

    BLENDS OF POLYPROPYLENES
    6.
    发明公开
    BLENDS OF POLYPROPYLENES 审中-公开
    聚丙烯共混物

    公开(公告)号：EP1036112A1

    公开(公告)日：2000-09-20

    申请号：EP98960429.3

    申请日：1998-11-24

    申请人： THE DOW CHEMICAL COMPANY

    发明人： THOEN, Johan, A. ,  KOOPMANS, Rudolf ,  ANSEMS, Patricia

    IPC分类号： C08L23/14

    CPC分类号： C08L23/10 ,  C08L2205/02 ,  C08L2207/14 ,  C08L2308/00 ,  C08L2666/04

    摘要： The invention includes a blend composition comprising (a) from 1 to 15 weight percent of amorphous polypropylene (b) from 99 to 85 weight percent of crystalline polypropylene, wherein the molecular weight of the amorphous polypropylene is lower than the molecular weight of the crystalline polypropylene; the molecular weight (Mw) of the amorphous polypropylene is higher than 50,OOO, preferably 100,OOO g/mole; the amorphous polypropylene has a MWD less than 3; and wherein the percentages are based on total amorphous plus crystalline polypropylene. Preferably, amorphous and crystalline polypropylenes are preferably at least 90 weight percent propylene units. Preferably, the amorphous polypropylene has a glass transition temperature greater than -10 °C. The invention includes processes for preparing compositions of the invention, including a multistage process. Additionally the invention includes articles, sheets, films, foams and fibers comprising or prepared from compositions of the invention as well as processes for making the things, preferably processes involving stretching a composition of the invention. The processes include a process comprising extrusion or injection blow molding; extruding, or thermoforming a composition of the invention; as well as a process comprising reacting a composition of the invention with a coupling agent.

    SHEET MATERIALS SUITABLE FOR USE AS A FLOOR, WALL OR CEILING COVERING MATERIAL, AND PROCESSES AND INTERMEDIATES FOR MAKING THE SAME
    7.
    发明公开
    SHEET MATERIALS SUITABLE FOR USE AS A FLOOR, WALL OR CEILING COVERING MATERIAL, AND PROCESSES AND INTERMEDIATES FOR MAKING THE SAME 审中-公开
    薄膜材料地板，墙壁和天花板的衣服，过程和中间产品FOR THEIR

    公开(公告)号：EP1002014A1

    公开(公告)日：2000-05-24

    申请号：EP98938374.0

    申请日：1998-08-04

    申请人： THE DOW CHEMICAL COMPANY

    发明人： KJELLQVIST, Jerker, B., I. ,  WEVERS, Ronald ,  THOEN, Johan, A. ,  QUACK, Wolfgang

    IPC分类号： C08L23/04 ,  C09D123/04

    CPC分类号： C08L23/0815 ,  C08L2205/02 ,  C08L2314/06 ,  Y10T428/249953 ,  Y10T428/25 ,  Y10T428/26 ,  Y10T428/31855 ,  Y10T428/31909 ,  C08L2666/04

    摘要： Sheet materials suitable for use as a floor, wall or ceiling covering material are described which comprise (1) a polymer mixture having (A) at least one homogeneously branched ethylene Polymer (A) having a molecular weight distribution, Mw/Mn, less than 3 and a short chain branching distribution index (SCBDI) equal to or greater than 50 percent obtainable by polymerization of ethylene with at least one C3-C20 α-olefin in the presence of a single site or constrained geometry catalyst; (B) at least one ethylene Polymer (B) having a density at least 0.005 g/cm3 greater than the density of ethylene Polymer (A) and a TREF elution temperature at least 5 °C greater than the TREF elution temperature of ethylene Polymer (A) and, optionally, (C) at least one ethylene Polymer (C) having a density at least 0.005 g/cm greater than the density of ethylene Polymer (B) and a TREF elution temperature at least 5 °C greater than the TREF elution temperature of ethylene Polymer (B), and (2) optionally a filler at least partially dispersed with a compatibilizer in the polymer mixture, and when less than 10 wt.% filler is dispersed in the polymer mixture, then the melt index of Polymer (A) is preferably less than or equal to 1.5g/10 min., the melt index ratio of Polymer (B) to polymer (A) is preferably less than or equal to 5.0, and/or Polymer (B) is preferably a homogeneously branched ethylene polymer. Floor, wall and ceiling covering materials and processes for making them according to this invention are also described.

    FOAMING SYSTEM FOR RIGID URETHANE AND ISOCYANURATE FOAMS
    10.
    发明授权
    FOAMING SYSTEM FOR RIGID URETHANE AND ISOCYANURATE FOAMS 无效
    发泡剂SYSTEM FOR硬质聚氨酯和异氰脲酸酯

    公开(公告)号：EP0575543B1

    公开(公告)日：1997-04-23

    申请号：EP92909234.4

    申请日：1992-02-11

    申请人： THE DOW CHEMICAL COMPANY

    发明人： SMITS, Guido, Freddy ,  THOEN, Johan, A. ,  GRÜNBAUER, Henri, J., M. ,  LIDY, Werner, A.

    IPC分类号： C08J9/14

    CPC分类号： C08J9/149 ,  C08J2375/04 ,  Y10S521/902

    摘要： Polyisocyanate-based foams having a uniformly fine cell size are prepared by reacting a polyisocyanate with an isocyanate-reactive compound in the presence of water and a blowing agent mixture which comprises (a) from 2 to 70 mole percent based on total moles of components (a) and (b), of a substance different from (b), which has a boiling point of from 200K to 393K at 760 mm Hg and, when the boiling point is 283K or greater, a Kelvin boiling point to molecular weight ratio of greater than 1.7; and (b) from 98 to 30 mole percent of a mixture which consists of a hydrocarbon component (b1) that contains four or more carbon atoms and a polyfluorocarbon component (b2) which has a Kelvin boiling point of from 283K to 393K at 760 mm Hg and a ratio of Kelvin boiling point to molecular weight of less than or equal to 1.7 and wherein the mole ratio of (b1):(b2) is from 5 to 95: 95 to 5.