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    • 2. 发明授权
    • Resin composition for extruded forms
    • 用于挤出形式的树脂组合物
    • US06399683B1
    • 2002-06-04
    • US08967103
    • 1997-11-10
    • Koji YamamotoHajime IkenoKeiko Shichijo
    • Koji YamamotoHajime IkenoKeiko Shichijo
    • C08L2308
    • C08L23/0815C08L23/06C08L2205/02C08L2310/00C08L2314/02C08L2666/06C08L2666/02
    • A resin composition for extruded forms that has improved workability, and excellent properties with respect to transparency, heat resistance, low-temperature resistance, etc. The composition contains 50 to 99% by weight of component A, which is a copolymer of ethylene and &agr;-olefin, and 1 to 50% by weight of component B, which is an ethylene-containing polymer. The component A has: (a) a melt flow rate (MFR) of 0.1 to 5 g/10 min.; (b) a density D of 0.88 to 0.925 g/cm3; (c) a single peak of elution volume indicated by an elution curve obtained by temperature rising elution fractionation (TREF), the peak corresponding to a temperature within a range of from 30 to 100®, and the elution curve satisfying a relationship in which the ratio H/W is not less than 1 when H represents the height of the peak and W represents the width of the elution curve at half of the height H; and (d) an elution volume Y (in % of the weight thereof with respect to the total weight of the component A) at an elution temperature of 50C in TREF, the elution volume Y satisfying the following condition: {circle around (1)} Y≦−4500D+4105 when the density D of the component A is less than 0.91 g/cm3, but Y≦100; or {circle around (2)} Y≦10 when the density D of the component A is not less than 0.91 g/cm3. The component B has: (a′) a melt flow rate of 0.1 to 20 g/10 min.; (b′) a density of 0.88 to 0.93 g/cm3; (c′) a memory effect (ME) of not less than 1.3; and (d′) a melt tension (MT) of not less than 1.0 g.
    • 用于挤出形式的树脂组合物,其具有改进的加工性,并且在透明性,耐热性,耐低温性等方面具有优异的性能。该组合物含有50至99重量%的组分A,其是乙烯和α的共聚物 和1〜50重量%的作为含乙烯的聚合物的组分B。 组分A具有:(a)熔体流动速率(MFR)为0.1至5g / 10min。 (b)密度D为0.88-0.925g / cm3; (c)通过升温洗脱分级(TREF)获得的洗脱曲线所指示的洗脱体积的单峰,对应于30〜100(R)范围内的温度的峰,以及满足关系的洗脱曲线 当H表示峰的高度时,H / W的比率不小于1,W表示高度H的一半处的洗脱曲线的宽度; 和(d)在TREF中洗脱温度为50℃的洗脱体积Y(其相对于组分A的总重量的重量%),洗脱体积Y满足以下条件:{圆周(1) 当组分A的密度D小于0.91g / cm 3,但Y <= 100时,Y <= - 4500D + 4105; 或组分A的密度D为0.91g / cm 3以上的{圈(2)} Y <= 10。 组分B具有:(a')熔体流动速率为0.1至20g / 10min。 (b')密度为0.88〜0.93g / cm 3; (c')记忆效应(ME)不小于1.3; 和(d')不小于1.0g的熔体张力(MT)。
    • 3. 发明授权
    • Ethylene interpolymer polymerizations
    • 乙烯互聚物聚合
    • US06538070B1
    • 2003-03-25
    • US08858664
    • 1997-05-19
    • Robert S. CardwellBrian W. S. KolthammerDeepak R. Parikh
    • Robert S. CardwellBrian W. S. KolthammerDeepak R. Parikh
    • C08L2308
    • C08F297/08C08F4/65904C08F4/65908C08F4/65912C08F4/6592C08F10/00C08F10/02C08F110/02C08L23/0815C08L2205/02C08L2308/00C08L2314/06C08L2666/06C08F4/65916C08F2/34C08F2500/12C08F2500/03C08L2666/04
    • A new process of interpolymerizing ethylene interpolymer products having improved properties, such as increased onset of crystallization temperature, is disclosed. Preferably, the process comprises interpolymerizing a first homogeneous ethylene/alpha-olefin interpolymer and at least one second homogeneous ethylene/alpha-olefin interpolymer using at least two constrained geometry catalysts having different reactivities such that the first ethylene/alpha-olefin interpolymer has a narrow molecular weight distribution (NMWD) with a very high comonomer content and relatively high molecular weight and the second ethylene/alpha-olefin interpolymer has a NMWD with a low comonomer content and a molecular weight lower than that of the first interpolymer. The resultant first homogeneous interpolymer is combined with the resultant second homogeneous interpolymer in appropriate weight ratios resulting in the desired finished polymer structure. The first interpolymer and the second interpolymer can be polymerized in a single reactor or they can be polymerized in separate reactors operated in parallel or series.
    • 公开了具有改进性能的乙烯互聚物产物的新聚合方法,例如结晶温度的开始增加。 优选地,该方法包括使用具有不同反应性的至少两种约束几何催化剂使第一均匀乙烯/α-烯烃互聚物和至少一种第二均相乙烯/α-烯烃互聚物互聚,使得第一乙烯/α-烯烃互聚物具有窄的 具有非常高的共聚单体含量和相对高分子量的分子量分布(NMWD),第二乙烯/α-烯烃互聚物具有低共聚单体含量低于第一互聚物的分子量的NMWD。 将所得第一均匀互聚物与所得的第二均相互聚物以适当的重量比组合,得到所需的最终聚合物结构。 第一互聚物和第二互聚物可以在单个反应器中聚合,或者它们可以在并行或串联操作的分离的反应器中聚合。
    • 4. 发明授权
    • Thermoplastic resin composition
    • 热塑性树脂组合物
    • US06458893B1
    • 2002-10-01
    • US09904977
    • 2001-07-13
    • Michihisa TasakaToshimi Yamanaka
    • Michihisa TasakaToshimi Yamanaka
    • C08L2308
    • C08L75/04C08L15/00C08L23/08C08L23/0861C08L23/26C08L25/10C08L29/04C08L33/066C08L53/02C08L53/025C08L2666/06C08L2666/24C08L2666/04C08L2666/02C08L2666/14C08L29/00C08L25/00
    • A thermoplastic resin composition comprising 40 to 95 parts by weight of (a) a saponified ethylene-vinyl acetate copolymer resin and 60 to 5 parts by weight of (b) at least one selected from the group consisting of copolymers of a vinyl aromatic compound with a conjugated diene compound, and hydrogenated derivatives thereof, characterized in that the saponified ethylene-vinyl acetate copolymer resin (a) has an ethylene content of 40 to 95 wt % based on a weight of the saponified ethylene-vinyl acetate copolymer resin and a degree of saponification of the vinyl acetate of at least 80 wt % and (b)at least one selected from the group consisting of copolymers of a vinyl aromatic compound with a conjugated diene compound is selected from the group consisting of (b-1) block copolymers of a vinyl aromatic compound with a conjugated diene compound, and hydrogenated derivatives thereof and (b-2) hydrogenated random copolymers of a vinyl aromatic compound with a conjugated diene compound, the copolymers having a vinyl aromatic compound content of at most 50 wt %, a number average molecular weight(Mn) of from 5,000 to 1,000,000, a polydispersity(Mw/Mn) of at most 10, and a content of vinyl bonds derived from the conjugated diene compound of at least 10% based on bonds derived from the conjugated diene compound.
    • 一种热塑性树脂组合物,其包含40至95重量份的(a)皂化的乙烯 - 乙酸乙烯酯共聚物树脂和60至5重量份的(b)至少一种选自乙烯基芳族化合物与共轭的共聚物 二烯化合物及其氢化衍生物,其特征在于皂化乙烯 - 乙酸乙烯酯共聚物树脂(a)的乙烯含量为乙烯 - 乙酸乙烯酯共聚物树脂皂化物的重量百分比为40-95wt%,皂化度 至少80重量%的乙酸乙烯酯和(b)选自乙烯基芳族化合物与共轭二烯化合物的共聚物中的至少一种选自(b-1)乙烯基的(b-1)嵌段共聚物 芳族化合物与共轭二烯化合物及其氢化衍生物和(b-2)乙烯基芳族化合物与共轭二烯化合物的氢化无规共聚物,共聚物 乙烯基芳族化合物含量至多为50重量%,数均分子量(Mn)为5,000至1,000,000,多分散性(Mw / Mn)至多为10,以及衍生自共轭的 基于衍生自共轭二烯化合物的键,至少10%的二烯化合物。