Microporous polyolefin battery separator
    21.
    发明授权
    Microporous polyolefin battery separator 失效
    微孔聚烯烃电池隔膜

    公开(公告)号:US5922492A

    公开(公告)日:1999-07-13

    申请号:US864079

    申请日:1997-05-28

    IPC分类号: B32B5/24 D04H13/00 H01M2/16

    CPC分类号: H01M2/162 B32B5/24 H01M2/1653

    摘要: A microporous polyolefin composite membrane, preferably for use as a battery separator, comprising a microporous polyolefin membrane and a polyolefin nonwoven fabric laminated on at least one surface of the microporous polyolefin membrane. The composite membrane has a thickness of 25 to 200 .mu.m, a porosity of 30 to 70%, an air permeability of 100 to 2000 sec/100 cc and a surface opening area ratio of 50 to 90% on at least one outer surface thereof. The microporous polyolefin membrane comprises a matrix polyolefin component which is a polyolefin having a weight average molecular weight of 5.times.10.sup.5 or more or a polyolefin mixture containing the polyolefin having a weight average molecular weight of 5.times.10.sup.5 or more, and has a porosity of 30 to 95%, an air permeability of 100 to 2000 sec/100 cc, an average open pore diameter of 0.001 to 1 .mu.m and a tensile strength at break of 500 kg/cm.sup.2 or more. The microporous polyolefin membrane may further comprise a shutdown polymer component to shut down the pores, thereby making the composite membrane impermeable. The polyolefin nonwoven fabric comprises fine fibers and has an air permeability of 0.1 to 100 sec/100 cc and a basis weight of 5 to 50 g/m.sup.2. The polyolefin nonwoven fabric prevents the composite membrane from melting down at a low temperature thereby preventing the short-circuit between the electrodes.

    摘要翻译: 一种微孔聚烯烃复合膜,优选用作电池隔板,其包含微孔聚烯烃膜和聚烯烃无纺布,该聚烯烃无纺布层叠在微孔聚烯烃膜的至少一个表面上。 复合膜的至少一个外表面的厚度为25〜200μm,孔隙率为30〜70%,透气度为100〜2000秒/ 100cc,表面开口面积率为50〜90% 。 微孔聚烯烃膜包括基重聚烯烃组分,其是重均分子量为5×10 5以上的聚烯烃或含有重均分子量为5×10 5以上的聚烯烃的聚烯烃混合物,其孔隙率为30〜95% 透气度为100〜2000秒/ 100cc,平均开孔直径为0.001〜1μm,断裂强度为500kg / cm 2以上。 微孔聚烯烃膜还可以包括关闭聚合物组分以关闭孔,从而使复合膜不可渗透。 聚烯烃无纺布包括细纤维,透气度为0.1〜100秒/ 100cc,单位面积重量为5〜50g / m 2。 聚烯烃无纺布防止复合膜在低温下熔化,从而防止电极之间的短路。

    Polypropylene resin composition
    23.
    发明授权
    Polypropylene resin composition 失效
    聚丙烯树脂组合物

    公开(公告)号:US5621046A

    公开(公告)日:1997-04-15

    申请号:US499908

    申请日:1995-07-11

    摘要: A polypropylene resin composition including (A) 50-90 parts by weight of a polypropylene resin including (a) 3-30 weight % of stereoblock polypropylene having a weight-average molecular weight of 5,000-1,000,000, a percentage of five continuous propylene monomer units in which all propylene bonds are meso bonds and a percentage of five continuous propylene monomer units in which all propylene bonds are racemic bonds being 70% or more and 5% or more, respectively relative to the all propylene bonds, and (b) 70-97 weight % of an ultra-high stereospecific polypropylene having a melt flow rate of 0.1-1,000 g/10 minutes, an average meso chain length Nm calculated from a triad percentage determined from .sup.13 C-NMR spectrum by the following formula of Nm=2[mm]/[mr]+1, wherein [mm] is (isotactic triad/total triad).times.100 (%) and [mr] is (heterotactic triad/total triad).times.100 (%), meeting a relation of Nm>250+29.5 log (MFR), and (B) 50-10 parts by weight of an olefinic rubber and/or a polyolefin other than (A).

    摘要翻译: 一种聚丙烯树脂组合物,其包含(A)50-90重量份的聚丙烯树脂,其包含(a)3-30重量%的重均分子量为5,000-1,000,000的立构嵌段聚丙烯,五个连续丙烯单体单元的百分比 其中所有丙烯键均为内消旋键,其中所有丙烯键为外消旋键的五个连续丙烯单体单元的百分比相对于全部丙烯键分别为70%以上且5%以上,(b)70〜 97重量%的熔体流动速率为0.1-1,000g / 10分钟的超高立体定向聚丙烯,由根据13 C-NMR光谱由下式Nm / 2确定的三单元组百分比计算的平均内消旋链长度Nm: mm] / [mr] +1,其中[mm]为(全同立构三单元组/总三元组)×100(%),[mr]为(异质三单元组/总三元组)×100(%),满足Nm> 29.5log(MFR)和(B)50-10重量份的烯烃橡胶和/或其它聚烯烃 比(A)。

    Polyethylene label and method of preparation thereof
    25.
    发明授权
    Polyethylene label and method of preparation thereof 失效
    聚乙烯标签及其制备方法

    公开(公告)号:US5227233A

    公开(公告)日:1993-07-13

    申请号:US773561

    申请日:1991-11-06

    IPC分类号: G09F3/04

    摘要: A label comprising a polyethylene film in which the degree of crosslinking inwardly decreases across the thickness of the film and on one side of which printing is performed, and an adhesive layer further formed thereon. The label is good in clarity, is possible to perform back surface printing, can provide an integral feeling and a high-class feeling as if curved-surface printing is performed on a cylindrical container itself, is sufficient in rigidity and strength and therefore is possible to be thinly formed, is resistant to water wetting and contamination, is unnecessary to be stripped in recovering and recycling a polyethylene bottle when the label is stuck thereon, can be stuck on the bottle concurrently with blow molding of the bottle printed, and is therefore suitable for use as a label for in-molding. Degassing is carried out by forming an uneven surface on the adhesive surface, whereby the blister phenomenon can be avoided when the label is stuck on the surface of a bottle concurrently with blow molding of the bottle. When a primer layer intervenes between printing ink and the adhesive layer, the label excellent in the adhesive strength between the printing ink and the adhesive layer can be obtained.

    Microporous composite membrane and its production method and use
    27.
    发明授权
    Microporous composite membrane and its production method and use 有权
    微孔复合膜及其制备方法和用途

    公开(公告)号:US07781094B2

    公开(公告)日:2010-08-24

    申请号:US10595881

    申请日:2004-11-17

    摘要: A microporous composite membrane obtained by coating at least one surface of a microporous polyolefin membrane with a solution of a gelable fluororesin in a mixed solvent of a good solvent for the fluororesin, and a poor solvent having a dipole moment of 1.8 Debye or less and drying to form a porous coating layer of the above fluororesin has cylindrical penetrating pores formed in the above coating layer, with well-balanced permeability, adhesion to electrodes, mechanical strength, heat shrinkage resistance, shutdown properties and meltdown properties.

    摘要翻译: 将微孔性聚烯烃膜的至少一个表面用可凝胶化氟树脂的溶液涂布在氟树脂的良溶剂的混合溶剂中,将偶极矩为1.8德拜或以下的不良溶剂进行干燥而得到的微孔复合膜, 为了形成上述氟树脂的多孔涂层,在上述涂层中形成有圆柱状的贯通孔,具有平衡的渗透性,对电极的粘附性,机械强度,耐热收缩性,停机性和熔融性。

    MULTI-LAYER, MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, BATTERY SEPARATOR, AND BATTERY
    28.
    发明申请
    MULTI-LAYER, MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, BATTERY SEPARATOR, AND BATTERY 审中-公开
    多层,微孔聚烯烃薄膜,其生产方法,电池分离器和电池

    公开(公告)号:US20090253032A1

    公开(公告)日:2009-10-08

    申请号:US12296232

    申请日:2007-04-09

    摘要: A multi-layer, microporous polyolefin membrane comprising first microporous layers constituting at least both surface layers and at least one second microporous layer disposed between both surface layers; said first microporous layer being made of a first polyolefin comprising (i) polypropylene, or (ii) a mixture of 50% or more by mass of polypropylene and a polyethylene resin; said second microporous layer being made of a second polyolefin comprising (i) a mixture of 7% or less by mass of ultra-high-molecular-weight polyethylene having weight-average molecular weight of 1×106 or more and the other polyethylene than said ultra-high-molecular-weight polyethylene, (ii) the other polyethylene than said ultra-high-molecular-weight polyethylene, or (iii) a mixture of 50% or less by mass of polypropylene and said mixture (i) or said polyethylene (ii); said second microporous layer having a larger average pore diameter than that of said first microporous layer; and the total thickness of said first microporous layers being 15-60% per 100% of the total thickness of said first and second microporous layers.

    摘要翻译: 一种多层微孔聚烯烃膜,包括构成至少两个表面层的第一微孔层和设置在两个表面层之间的至少一个第二微孔层; 所述第一微孔层由第一聚烯烃制成,所述第一聚烯烃包含(i)聚丙烯,或(ii)50质量%以上的聚丙烯和聚乙烯树脂的混合物; 所述第二微孔层由第二聚烯烃制成,所述第二聚烯烃包含(i)重均分子量为1×10 6以上的超高分子量聚乙烯的7质量%以下的混合物, 高分子量聚乙烯,(ii)除了所述超高分子量聚乙烯以外的其它聚乙烯,或者(iii)50质量%以下的聚丙烯和所述混合物(i)或所述聚乙烯(ii)的混合物 ); 所述第二微孔层的平均孔径大于所述第一微孔层的平均孔径; 并且所述第一微孔层的总厚度为所述第一和第二微孔层的总厚度的100%的15-60%。

    MULTI-LAYER, MICROPOROUS POLYETHYLENE MEMBRANE, BATTERY SEPARATOR FORMED THEREBY AND BATTERY
    29.
    发明申请
    MULTI-LAYER, MICROPOROUS POLYETHYLENE MEMBRANE, BATTERY SEPARATOR FORMED THEREBY AND BATTERY 有权
    多层,微孔聚乙烯膜,电池分离器和电池

    公开(公告)号:US20090148761A1

    公开(公告)日:2009-06-11

    申请号:US12064350

    申请日:2006-08-24

    摘要: A multi-layer, microporous polyethylene membrane comprising (a) a first microporous layer made of a polyethylene resin, and (b) a second microporous layer comprising a polyethylene resin, and a heat-resistant polymer having a melting point or a glass transition temperature of 170° C. or higher, the heat-resistant polymer being dispersed in the form of fine particles in the polyethylene resin, and the second microporous layer having pores containing fine particles of the heat-resistant polymer as nuclei from which the cleavage of polyethylene resin fibrils starts, the multi-layer microporous polyethylene membrane having well-balanced shutdown properties, meltdown properties, permeability, mechanical strength, heat shrinkage resistance and compression resistance.

    摘要翻译: 一种多层微孔聚乙烯膜,包括(a)由聚乙烯树脂制成的第一微孔层,和(b)包含聚乙烯树脂的第二微孔层和具有熔点或玻璃化转变温度的耐热聚合物 为170℃以上,耐热性聚合物以聚乙烯树脂中的细颗粒的形式分散,第二微孔层具有含有耐热聚合物微粒的孔,作为核,其中聚乙烯 树脂原纤维开始,多层微孔聚乙烯膜具有良好的平衡关闭性能,熔化性能,渗透性,机械强度,耐热收缩性和抗压缩性。