Linear low density polyethylene with uniform or reversed comonomer composition distribution
    1.
    发明授权
    Linear low density polyethylene with uniform or reversed comonomer composition distribution 有权
    具有均匀或反相共聚单体组成分布的线性低密度聚乙烯

    公开(公告)号:US08546499B2

    公开(公告)日:2013-10-01

    申请号:US13318101

    申请日:2010-04-26

    IPC分类号: C08F4/44

    摘要: Ziegler-Natta catalyzed linear low density polyethylene which satisfies the following conditions:a) a density, according to ISO 1183, of from 900 to 925 kg/m3,b) a C4-C10-comonomer content, determined by Fourier transform infrared spectroscopy, of 1 to 16 wt %c) a weight average molecular weight Mw, determined by gel permeation chromatography, of at least 200 000,d) wherein the linear low density polyethylene comprises, by Crystallisation Analysis Fractionation (CRYSTAF) an amorphous fraction soluble at a temperature below 30° C. of at most 10 wt % and a fraction crystallising between 60 to 75° C. of at least 35 wt % ande) by temperature rising elution fractionation (TREF) analysis, at least 70 wt % of a crystallising polymer component having an elution temperature range from 60° C. to 94° C. and less than 10 wt % of a crystallising polymer component having an elution temperature range from 30° C. to 60° C. and,f) by Gel Permeation chromatography coupled with Fourier transform infrared spectroscopy detector (GPC-FTIR), a substantially constant short chain branching profile across the molecular weight distribution (MWD) org) by Gel Permeation chromatography coupled with Fourier transform infrared spectroscopy instruments (GPC-FTIR), a reverse short chain branching profile across the molecular weight distribution (MWD),the linear low density polyethylene being produced in the presence of a special Ziegler-Natta procatalyst and a halogenated aluminium alkyl cocatalyst of the formula (IV) (C1-C4- alkyl)m-Al-X3−m, wherein X is chlorine, bromine, iodine or fluorine and m is 1 or 2.

    摘要翻译: 齐格勒 - 纳塔催化的线性低密度聚乙烯,其满足以下条件:a)根据ISO 1183的密度为900至925kg / m 3,b)通过傅立叶变换红外光谱测定的C 4 -C 10共聚单体含量, c)通过凝胶渗透色谱测定的至少200000重量平均分子量Mw,d)其中线性低密度聚乙烯通过结晶分析分馏(CRYSTAF)包含在 温度低于30℃,至多10重量%,并且在60至75℃之间结晶至少35重量%的级分,e)通过升温洗脱分级(TREF)分析,至少70重量%的结晶 具有洗脱温度范围为60℃至94℃且小于10重量%的具有洗脱温度范围为30℃至60℃的结晶聚合物组分的聚合物组分,以及f)通过凝胶渗透 色谱与傅里叶变换耦合 (GPC-FTIR),通过分子量分布(MWD)基本上恒定的短链支化分子,或g)通过凝胶渗透色谱法与傅立叶变换红外光谱仪(GPC-FTIR),反向短链支化 在分子量分布(MWD)的范围内,线性低密度聚乙烯是在特殊的齐格勒 - 纳塔前催化剂和式(Ⅳ)的卤化烷基铝助催化剂(C 1 -C 4烷基)m-Al- X3-m,其中X是氯,溴,碘或氟,m是1或2。

    LINEAR LOW DENSITY POLYETHYLENE WITH UNIFORM OR REVERSED COMONOMER COMPOSITION DISTRIBUTION
    2.
    发明申请
    LINEAR LOW DENSITY POLYETHYLENE WITH UNIFORM OR REVERSED COMONOMER COMPOSITION DISTRIBUTION 有权
    线性低密度聚乙烯具有均匀或反转的人气组合物分布

    公开(公告)号:US20120053308A1

    公开(公告)日:2012-03-01

    申请号:US13318101

    申请日:2010-04-26

    IPC分类号: C08F4/646 C08F210/16

    摘要: Ziegler-Natta catalyzed linear low density polyethylene which satisfies the following conditions: a) a density, according to ISO 1183, of from 900 to 925 kg/m3, b) a C4-C10-comonomer content, determined by Fourier transform infrared spectroscopy, of 1 to 16 wt % c) a weight average molecular weight Mw, determined by gel permeation chromatography, of at least 200 000, d) wherein the linear low density polyethylene comprises, by Crystallisation Analysis Fractionation (CRYSTAF) an amorphous fraction soluble at a temperature below 30° C. of at most 10 wt % and a fraction crystallising between 60 to 75° C. of at least 35 wt % and e) by temperature rising elution fractionation (TREF) analysis, at least 70 wt % of a crystallising polymer component having an elution temperature range from 60° C. to 94° C. and less than 10 wt % of a crystallising polymer component having an elution temperature range from 30° C. to 60° and, f) by Gel Permeation chromatography using an Fourier transform infrared spectroscopy detector (GPC-FTIR), a substantially constant short chain branching profile across the molecular weight distribution (MWD) or g) by Gel Permeation chromatography coupled with Fourier transform infrared spectroscopy instruments (GPC-FTIR), a revers short chain branching profile across the molecular weight distribution (MWD), the linear low density polyethylene being produced in the presence of a special Ziegler-Natta procatalyst and a halogenated aluminium alkyl cocatalyst of the formula (IV) (C1-C4-alkyl)m-AI-X3-m1, wherein X is chlorine, bromine, iodine or fluorine and m is 1 or 2.

    摘要翻译: 齐格勒 - 纳塔催化的线性低密度聚乙烯,其满足以下条件:a)根据ISO 1183的密度为900至925kg / m 3,b)通过傅立叶变换红外光谱测定的C 4 -C 10共聚单体含量, c)通过凝胶渗透色谱测定的至少200000重量平均分子量Mw,d)其中线性低密度聚乙烯通过结晶分析分馏(CRYSTAF)包含在 温度低于30℃,至多10重量%,并且在60至75℃之间结晶至少35重量%的级分,e)通过升温洗脱分级(TREF)分析,至少70重量%的结晶 具有洗脱温度范围为60℃至94℃且小于10重量%的具有洗脱温度范围为30℃至60℃的结晶聚合物组分的聚合物组分,和f)通过凝胶渗透色谱法,使用 傅里叶变换inf (GPC-FTIR),通过与傅立叶变换红外光谱仪(GPC-FTIR)结合的凝胶渗透色谱法,通过分子量分布(MWD)基本恒定的短链支化谱,或g) 在分子量分布(MWD)下,在特殊的齐格勒 - 纳塔前催化剂和式(Ⅳ)的卤化烷基铝助催化剂(C 1 -C 4烷基)m-AI-X3存在下生产的线性低密度聚乙烯 -m1,其中X是氯,溴,碘或氟,m是1或2。