Ethylene polymer
    1.
    发明授权
    Ethylene polymer 失效
    乙烯聚合物

    公开(公告)号:US6080827A

    公开(公告)日:2000-06-27

    申请号:US882749

    申请日:1997-06-26

    摘要: An ethylene polymer, which is an ethylene homopolymer or a copolymer of ethylene and an .alpha.-olefin having 3 to 20 carbon atoms, having the following properties:(1) the melt index (MI) at a temperature of 190.degree. C. under a load of 21.6 kg is in the range of 0.1 to 100 g/10 min;(2) the density is in the range of 0.935 to 0.975 g/cm.sup.3 ; and(3) the characteristic value of biaxial extensional flow, .lambda.MAX (.lambda.MAX herein is an index of the extension ratio at which the nominal stress is maximum, provided that the extension ratio is in the range of 1 to 3, experimentally obtainable by a biaxial extensional flow test carried out at 190.degree. C. at a constant strain rate d.epsilon./dt of 0.05 s.sup.-1), is at least 1.6.

    摘要翻译: 乙烯聚合物,其是乙烯均聚物或乙烯和具有3至20个碳原子的α-烯烃的共聚物,具有以下性质:(1)在190℃的温度下的熔体指数(MI) 21.6kg的负载在0.1〜100g / 10min的范围内; (2)密度在0.935〜0.975g / cm3的范围内; 和(3)双向拉伸流量的特征值,λmax(本文中的lambda MAX是额定应力最大值的伸长率的指标,条件是伸长比在1至3的范围内,实验可通过 在190℃下以恒定应变速率dε/ dt为0.05s-1进行的双轴拉伸流动试验为至少1.6。

    Hollow multi-layer molding
    2.
    发明授权
    Hollow multi-layer molding 失效
    空心多层成型

    公开(公告)号:US5443874A

    公开(公告)日:1995-08-22

    申请号:US235336

    申请日:1994-04-29

    摘要: A hollow multi-layer molding made of a multi-layer laminate material, the multi-layer laminate material having: a polyethylene layer; a barrier layer made of a substance selected from the group consisting of polyamide resins, saponified derivatives of ethylene-vinyl acetate copolymers, thermoplastic polyesters, and a mixture of at least two of the polyamide resin, the saponified derivative and the thermoplastic polyesters; and an adhesive layer made of a modified polyolefin resin, the polyethylene layer and the barrier layer being laminated to each other with the adhesive layer sandwiched therebetween. The polyethylene layer is made of a high-molecular-weight polyethylene which is obtained by using a specific chrome catalyst and a reducing agent, and which has a high-load melt flow rate (at a temperature of 190.degree. C. under a load of 21.6 kg) of 1 to 10 g/10 min., and a density of not less than 0.935 g/cm.sup.3. The hollow multi-layer molding has excellent barrier properties with respect to vehicle fuels and excellent mechanical strength, such as impact strength, and is capable of being produced while allowing improved reclaiming of flash and the like.

    摘要翻译: 一种由多层层压材料制成的中空多层模制品,所述多层层压材料具有聚乙烯层; 由选自聚酰胺树脂,乙烯 - 乙酸乙烯酯共聚物的皂化衍生物,热塑性聚酯以及至少两种聚酰胺树脂,皂化衍生物和热塑性聚酯的混合物组成的组中的物质制成的阻隔层; 以及由改性聚烯烃树脂制成的粘合剂层,所述聚乙烯层和所述阻挡层彼此层合,并且所述粘合剂层夹在其间。 聚乙烯层由通过使用特定的铬催化剂和还原剂获得的高分子量聚乙烯制成,并且具有高负荷的熔体流动速率(在190℃的温度, 21.6kg)为1〜10g / 10min,密度为0.935g / cm 3以上。 中空多层成型体相对于车辆燃料具有优异的阻隔性,并且具有优异的机械强度,例如冲击强度,并且能够在允许改善闪蒸等的回收的同时进行生产。

    Molded product for colored food
    4.
    发明授权
    Molded product for colored food 失效
    彩色食品成型产品

    公开(公告)号:US5219600A

    公开(公告)日:1993-06-15

    申请号:US873357

    申请日:1992-04-21

    摘要: A molded product for colored food, comprising (A) 0.01 to 1 part by weight of a hindered amine type light stabilizer and (B) 0.01 to 0.5 part by weight of an aromatic phosphite type and/or an aromatic phosphonite type antioxidant formulated per 100 parts by weight of a polyolefin containing substantially no phenol type antioxidant is disclosed.The molded product for colored food made of a polyolefin and having the composition of the present invention undergoes no discoloration even when contacted with a colored food for a long time and is also excellent in odor characteristic, mechanical characteristics and stability, etc., and therefore excellent as molded product for colored food, particularly sealed vessel, vessel for microwave oven heating.

    摘要翻译: 一种有色食品成型品,其特征在于,含有(A)0.01〜1重量份的受阻胺型光稳定剂和(B)0.01〜0.5重量份的芳香族亚磷酸酯类和/ 公开了基本上不含酚型抗氧化剂的聚烯烃重量份。 由聚烯烃制成的具有本发明组合物的彩色食品用成型品即使长时间与着色食品接触也不变色,并且气味特性,机械特性和稳定性等也优异,因此 特别是用于彩色食品,特别是密封容器,微波炉加热容器的成型产品。

    Thermally bonded nonwoven fabric
    5.
    发明授权
    Thermally bonded nonwoven fabric 失效
    热粘无纺布

    公开(公告)号:US4770925A

    公开(公告)日:1988-09-13

    申请号:US144508

    申请日:1988-01-15

    IPC分类号: D04H1/54 D04H1/04

    摘要: There is provided a thermally bonded nonwoven fabric with a unit weight of 10 to 40 g/m.sup.2, comprising 20 to 100% by weight of a composite fiber with a fineness of 0.5 to 8 denier and 80 to 0% by weight of other fibers as the constituent fibers, the composite fiber comprising a first component which is an ethylene-.alpha.-olefin copolymer composition comprising an ethylen-.alpha.-olefin copolymer containing 0.5 to 4% by weight of an .alpha.-olefin having 4 to 12 carbon atoms blended with 0.01 to 0.3% by weight of a phenol type antioxidant and 0.01 to 0.3% by weight of a sulfur type antioxidant, having a Q-value (weight average molecular weight/number average molecular weight) of 4 or less, a density of 0.930 to 0.950 g/cm.sup.3, a melt flow rate of 5 to 50 g/10 min. and an oxidation induction time at 210.degree. C. of 10 min. or longer, and a second component which is a thermoplastic resin having a melting point higher by at least 20.degree. C. than that of the first component, with a constitutional ratio (sectional area ratio) of the first component to the second component being 35:65 to 70:30, said first component of the composite fiber forming at least a proportion of the fiber surface continuously along the length of each fiber and adhering through melting mutually the constituent fibers.