Multiple catalyst system for olefin polymerization and polymers produced therefrom
申请人:——
公开号:US20040138392A1
公开(公告)日:2004-07-15
This invention relates to a polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ethylene, where the polymer has:
a) a Dot T-Peel of 1 Newton or more; and
b) a branching index (g′) of 0.95 or less measured at the Mz of the polymer;
c) an Mw of 100,000 or less.
This invention also relates a polymer comprising one or more C3 to C40 olefins where the polymer has:
a) a Dot T-Peel of 1 Newton or more on Kraft paper;
b) a branching index (g′) of 0.95 or less measured at the Mz of the polymer;
c) a Mw of 10,000 to 100,000; and
d) a heat of fusion of 1 to 70 J/g.
This invention also relates a polymer comprising one or more C3 to C40 olefins where the polymer has:
a) a Dot T-Peel of 1 Newton or more on Kraft paper;
b) a branching index (g′) of 0.98 or less measured at the Mz of the polymer;
c) a Mw of 10,000 to 60,000;
d) a heat of fusion of 1 to 50 J/g.
This invention also relates to a homopolypropylene or a copolymer of propylene and up to 5 mole % ethylene having:
a) an isotactic run length of 1 to 30 (isotactic run length “IRL” is defined to be the percent of mmmm pentad divided by 0.5×percent of mmmr pentad) as determined by Carbon 13 NMR, preferably 3 to 25, more preferably 4 to 20,
b) a percent of r dyad of greater than 20%, preferably from 20 to 70% as determined by Carbon 13 NMR, and
c) a heat of fusion of 70 J/g or less, preferably 60 J/g or less, more preferably between 1 and 55 J/g, more preferably between 4 and 50 J/g.
This invention further relates to a process to produce an olefin polymer comprising:
1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 5% or less at selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more at the selected polymerization conditions;
3) contacting the catalyst components in the presence of one or more activators with one or more C3 to C40 olefins, at the selected polymerization conditions in a reaction zone;
4) obtaining the polymer.
This invention further relates to a continuous process to produce a branched olefin polymer comprising:
1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 5% or less under selected polymerization conditions;
2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more at the selected polymerization conditions;
3) contacting the catalyst components in the presence of one or more activators with one or more C3 to C40 olefins, and, optionally one or more diolefins;
4) at a temperature of greater than 100° C.;
5) at a residence time of 120 minutes or less;
6) wherein the ratio of the first catalyst to the second catalyst is from 1:1 to 50:1;
7) wherein the activity of the catalyst components is at least 100 kilograms of polymer per gram of the catalyst components; and wherein at least 20% of the olefins are converted to polymer.
本发明涉及一种聚合物,包括一种或多种C3至C40的烯烃,可选地包括一种或多种二烯烃,以及少于15摩尔%的乙烯,其中该聚合物具有:a)1牛顿或更多的Dot T-Peel;和b)在聚合物的Mz处测量的分支指数(g')为0.95或更低;c)Mw为100,000或以下。本发明还涉及一种聚合物,包括一种或多种C3至C40的烯烃,其中该聚合物具有:a)在Kraft纸上1牛顿或更多的Dot T-Peel;b)在聚合物的Mz处测量的分支指数(g')为0.95或更低;c)Mw为10,000至100,000;以及d)熔融热为1至70 J/g。本发明还涉及一种聚合物,包括一种或多种C3至C40的烯烃,其中该聚合物具有:a)在Kraft纸上1牛顿或更多的Dot T-Peel;b)在聚合物的Mz处测量的分支指数(g')为0.98或更低;c)Mw为10,000至60,000;d)熔融热为1至50 J/g。本发明还涉及一种均聚丙烯或丙烯和最多5摩尔%乙烯的共聚物,具有:a)由Carbon 13 NMR确定的1至30的异构跑长(异构跑长“IRL”定义为mmmm五元组的百分比除以mmmr五元组的0.5×百分比),优选为3至25,更优选为4至20;b)由Carbon 13 NMR确定的大于20%的r二元组的百分比,优选为20至70%;以及c)熔融热为70 J/g或更低,优选为60 J/g或更低,更优选为1至55 J/g,更优选为4至50 J/g。本发明还涉及一种生产烯烃聚合物的过程,包括:1)选择第一催化剂组分,能够在选择的聚合条件下产生具有100,000或更低的Mw和5%或更低的结晶度的聚合物;2)选择第二催化剂组分,能够在选择的聚合条件下产生具有100,000或更低的Mw和20%或更高的结晶度的聚合物;3)在存在一种或多种活化剂的情况下,将催化剂组分与一种或多种C3至C40烯烃,在选择的聚合条件下,在反应区域中接触;4)获得聚合物。本发明还涉及一种连续生产支化烯烃聚合物的过程,包括:1)选择第一催化剂组分,能够在选择的聚合条件下产生具有100,000或更低的Mw和5%或更低的结晶度的聚合物;2)选择第二催化剂组分,能够在选择的聚合条件下产生具有100,000或更低的Mw和20%或更高的结晶度的聚合物;3)在存在一种或多种活化剂的情况下,将催化剂组分与一种或多种C3至C40烯烃和可选的一种或多种二烯烃接触;4)在大于100℃的温度下;5)在120分钟或更短的停留时间内;6)其中第一催化剂与第二催化剂的比例为1:1至50:1;7)其中催化剂组分的活性至少为每克催化剂组分100千克聚合物;并且至少20%的烯烃转化为聚合物。