[미국특허]
Catalysts for producing broad molecular weight distribution polyolefins in the absence of added hydrogen
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08L-023/08
C08F-004/653
C08F-210/02
C08F-210/16
C08F-004/6592
C08F-010/00
C08F-004/659
출원번호
US-0069469
(2013-11-01)
등록번호
US-9102821
(2015-08-11)
발명자
/ 주소
Yang, Qing
McDaniel, Max P.
Crain, Tony R.
Yu, Youlu
출원인 / 주소
Chevron Phillips Chemical Company LP
대리인 / 주소
Merchant & Gould PC
인용정보
피인용 횟수 :
0인용 특허 :
59
초록▼
The present invention provides a polymerization process utilizing a dual metallocene catalyst system for the production of broad or bimodal molecular weight distribution polymers, generally, in the absence of added hydrogen. Polymers produced from the polymerization process are also provided, and th
The present invention provides a polymerization process utilizing a dual metallocene catalyst system for the production of broad or bimodal molecular weight distribution polymers, generally, in the absence of added hydrogen. Polymers produced from the polymerization process are also provided, and these polymers can have a Mn in a range from about 9,000 to about 30,000 g/mol, and a short chain branch content that decreases as molecular weight increases.
대표청구항▼
1. An ethylene polymer having: a Mn in a range from about 9,000 to about 30,000 g/mol;a ratio of Mw/Mn in a range from about 4 to about 20;a bimodal molecular weight distribution; anda number of SCB per 1000 total carbon atoms that is greater at Mn than at Mw. 2. The polymer of claim 1, wherein the
1. An ethylene polymer having: a Mn in a range from about 9,000 to about 30,000 g/mol;a ratio of Mw/Mn in a range from about 4 to about 20;a bimodal molecular weight distribution; anda number of SCB per 1000 total carbon atoms that is greater at Mn than at Mw. 2. The polymer of claim 1, wherein the ethylene polymer is an ethylene/1-butene copolymer, an ethylene/1-hexene copolymer, or an ethylene/1-octene copolymer. 3. An article comprising the ethylene polymer of claim 2. 4. The polymer of claim 1, wherein the ethylene polymer has: a MI in a range from about 0.001 to about 75 g/10 min;a ratio of HLMI/MI in a range from about 10 to about 100; anda density in a range from about 0.90 to about 0.95 g/cm3. 5. The polymer of claim 1, wherein the ethylene polymer has: a MI in a range from about 0.01 to about 50 g/10 min;a ratio of HLMI/MI in a range from about 20 to about 80; anda density in a range from about 0.91 to about 0.945 g/cm3. 6. The polymer of claim 5, wherein the ethylene polymer has: a ratio of the number of SCB per 1000 total carbon atoms of the polymer at D90 to the number of SCB per 1000 total carbon atoms of the polymer at D10 in a range from 1.1 to about 10; anda ratio of the number of SCB per 1000 total carbon atoms of the polymer at D85 to the number of SCB per 1000 total carbon atoms of the polymer at D15 in a range from 1.1 to about 8. 7. The polymer of claim 6, wherein the ethylene polymer has: a ratio of Mw/Mn in a range from about 4.2 to about 15; anda ratio of Mz/Mw in a range from about 2.2 to about 8. 8. The polymer of claim 7, wherein the ethylene polymer is an ethylene/1-butene copolymer, an ethylene/1-hexene copolymer, or an ethylene/1-octene copolymer. 9. The polymer of claim 8, wherein the ethylene polymer has a ratio of the number of SCB per 1000 total carbon atoms of the polymer at the peak molecular weight of the lower molecular weight component to the number of SCB per 1000 total carbon atoms of the polymer at the peak molecular weight of the higher molecular weight component of greater than 1. 10. An ethylene polymer having: a density in a range from about 0.90 to about 0.95 g/cm3;a bimodal molecular weight distribution; anda number of SCB per 1000 total carbon atoms that is greater at Mn than at Mw. 11. The polymer of claim 10, wherein the ethylene polymer is an ethylene/1-butene copolymer, an ethylene/1-hexene copolymer, or an ethylene/1-octene copolymer. 12. An article comprising the ethylene polymer of claim 11. 13. The polymer of claim 10, wherein the ethylene polymer has: a Mn in a range from about 9,000 to about 30,000 g/mol;a ratio of Mw/Mn in a range from about 4 to about 20; anda ratio of Mz/Mw in a range from about 2.2 to about 8. 14. The polymer of claim 13, wherein the ethylene polymer has: a density in a range from about 0.91 to about 0.945 g/cm3;a ratio of the number of SCB per 1000 total carbon atoms of the polymer at D90 to the number of SCB per 1000 total carbon atoms of the polymer at D10 in a range from 1.1 to about 10; anda ratio of the number of SCB per 1000 total carbon atoms of the polymer at D85 to the number of SCB per 1000 total carbon atoms of the polymer at D15 in a range from 1.1 to about 8. 15. The polymer of claim 14, wherein the ethylene polymer is an ethylene/1-butene copolymer, an ethylene/1-hexene copolymer, or an ethylene/1-octene copolymer. 16. The polymer of claim 15, wherein the ethylene polymer has: a ratio of the number of SCB per 1000 total carbon atoms of the polymer at D90 to the number of SCB per 1000 total carbon atoms of the polymer at D10 in a range from 1.2 to about 6; anda ratio of the number of SCB per 1000 total carbon atoms of the polymer at D85 to the number of SCB per 1000 total carbon atoms of the polymer at D15 in a range from 1.2 to about 6. 17. The polymer of claim 15, wherein the ethylene polymer has a ratio of the number of SCB per 1000 total carbon atoms of the polymer at the peak molecular weight of the lower molecular weight component to the number of SCB per 1000 total carbon atoms of the polymer at the peak molecular weight of the higher molecular weight component of greater than 1. 18. The polymer of claim 15, wherein the ethylene polymer has: a Mn of the lower molecular weight component of the polymer in a range from about 6,000 to about 25,000 g/mol; anda Mw of the higher molecular weight component of the polymer in a range from about 100,000 to about 400,000 g/mol. 19. The polymer of claim 15, wherein the ethylene polymer has: a MI in a range from about 0.01 to about 50 g/10 min;a ratio of HLMI/MI in a range from about 20 to about 80; anda ratio of Mw/Mn in a range from about 4.2 to about 15. 20. The polymer of claim 15, wherein the ethylene polymer has: a Mn in a range from about 9,000 to about 28,000 g/mol;a MI in a range from about 0.05 to about 25 g/10 min;a ratio of Mw/Mn in a range from about 4.2 to about 10; anda ratio of Mz/Mw in a range from about 2.3 to about 7.
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