[미국특허]
Polymerization catalysts for producing polymers with low melt elasticity
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08F-004/64
C08F-004/76
C08F-004/52
출원번호
US-0349484
(2012-01-12)
등록번호
US-8450437
(2013-05-28)
발명자
/ 주소
Yang, Qing
McDaniel, Max P.
Martin, Joel L.
Yu, Youlu
Rohlfing, David C.
Jensen, Michael D.
출원인 / 주소
Chevron Phillips Chemical Company LP
대리인 / 주소
Fletcher Yoder, PC
인용정보
피인용 횟수 :
0인용 특허 :
98
초록▼
The present techniques relate to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene compound comprising bridging η5-cyclopentadienyl-type ligands, typically in combination with a cocatalyst, and a activator. The compositions and methods presented herein include ethylene
The present techniques relate to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene compound comprising bridging η5-cyclopentadienyl-type ligands, typically in combination with a cocatalyst, and a activator. The compositions and methods presented herein include ethylene polymers with low melt elasticity.
대표청구항▼
1. A method of polymerizing olefins, comprising: contacting an α-olefin with a catalyst composition under polymerization conditions to form a polymer;wherein the catalyst composition comprises the contact product of an ansa-metallocene, an organoaluminum compound, and an activator, wherein:the ansa-
1. A method of polymerizing olefins, comprising: contacting an α-olefin with a catalyst composition under polymerization conditions to form a polymer;wherein the catalyst composition comprises the contact product of an ansa-metallocene, an organoaluminum compound, and an activator, wherein:the ansa-metallocene comprises a compound having the formula: wherein: M1 is zirconium or hafnium;X′ and X″ are independently F, Cl, Br, or I;E is C or Si;R1 and R2 are independently an alkyl group, an aryl group, or hydrogen;R3A and R3B are independently a hydrocarbyl group, a trihydrocarbylsilyl group, or hydrogen;n is an integer from 0 to 10, inclusive;R4A and R4B are independently a hydrocarbyl group; andthe activator comprises an activator-support comprising a solid oxide treated with an electron-withdrawing anion. 2. The method of claim 1, wherein the organoaluminum compound has the formula: Al(X5)n(X6)3-n, wherein:X5 is a hydrocarbyl;X6 is a halide, a hydride, an alkoxide or an aryloxide; andn is a number from 1 to 3, inclusive. 3. The method of claim 2, wherein: the ansa-metallocene comprises: or any combination thereof the activator comprises a sulfated solid oxide; andthe organoaluminum compound comprises triethylaluminum, tri-n-butylaluminum, triisobutylaluminum, or any combination thereof. 4. The method of claim 2, wherein: the ansa-metallocene comprises: or any combination thereof; the activator comprises sulfated alumina; andthe organoaluminum compound comprises triethylaluminum, tri-n-butylaluminum, triisobutylaluminum, or any combination thereof. 5. The method of claim 1, wherein the activator comprises an organoboron compound, an organoborate compound, an organoaluminoxane compound, or any combination thereof, wherein the organoaluminoxane compound comprises: a cyclic aluminoxane having the formula: wherein R is a linear or branched alkyl and n is an integer from 3 to about 10; a linear aluminoxane having the formula: wherein R is a linear or branched alkyl and n is an integer from 1 to about 50; or a cage aluminoxane having the formula Rt5m+αRbm−αAl4mO3m, wherein: m is 3 or 4;α is equal to nAl(3)−nO(2)+nO(4), wherein: nAl(3) is the number of three coordinate aluminum atoms;nO(2) is the number of two coordinate oxygen atoms; andnO(4) is the number of four coordinate oxygen atoms;Rt represents a linear or branched terminal alkyl group; andRb represents a linear or branched bridging alkyl group; orany combination thereof. 6. The method of claim 1, wherein: the solid oxide is silica, alumina, silica-alumina, aluminophosphate, aluminum phosphate, zinc aluminate, heteropolytungstates, titania, zirconia, magnesia, boria, zinc oxide, mixed oxides thereof, or any combination thereof; andthe electron-withdrawing anion is fluoride, chloride, bromide, iodide, phosphate, triflate, bisulfate, sulfate, fluoroborate, fluorosulfate, trifluoroacetate, phosphate, fluorophosphate, fluorozirconate, fluorosilicate, fluorotitanate, permanganate, substituted or unsubstituted alkanesulfonate, substituted or unsubstituted arenesulfonate, substituted or unsubstituted alkylsulfate, or any combination thereof. 7. The method of claim 1, wherein R3A and R3B are independently H, methyl, allyl, ethyl, propyl, benzyl, butyl, pentyl, hexyl, or trimethylsilyl. 8. The method of claim 1, wherein the α-olefin is contacted with the catalyst composition in a reactor system comprising a batch reactor, a slurry reactor, a gas-phase reactor, a solution reactor, a high pressure reactor, a tubular reactor, an autoclave reactor, or any combination thereof. 9. The method of claim 8, wherein the reactor system comprises the slurry reactor, the slurry reactor comprises a loop slurry reactor, and the polymer formed is continuously removed from the reactor. 10. The method of claim 1, wherein the organoaluminum compound is a trialkylaluminum compound. 11. The method of claim 1, wherein the α-olefin comprises a monomer, or a monomer and a comonomer. 12. The method of claim 11, wherein the monomer comprises ethylene, propylene, or a combination thereof. 13. The method of claim 11, wherein the α-olefin comprises the monomer and the comonomer, and the comonomer comprises propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, or 1-octene, or any combination thereof. 14. A method of polymerizing olefins, comprising: contacting an α-olefin with a catalyst composition under polymerization conditions to form a polymer;wherein the catalyst composition comprises the contact product of an ansa-metallocene and an activator, wherein:the ansa-metallocene comprises a compound having the formula: wherein: M1 is zirconium or hafnium;X′ and X″ are independently H, BH4, methyl, phenyl, benzyl, neopentyl, trimethylsilylmethyl, CH2CMe2Ph, CH2SiMe2Ph, CH2CMe2CH2Ph, or CH2SiMe2CH2Ph;E is C or Si;R1 and R2 are independently an alkyl group, an aryl group, or hydrogen;R3A and R3B are independently a hydrocarbyl group, a trihydrocarbylsilyl group, or hydrogen;n is an integer from 0 to 10, inclusive;R4A and R4B are independently a hydrocarbyl group; andthe activator comprises an activator-support comprising a solid oxide treated with an electron-withdrawing anion. 15. The method of claim 14, wherein the solid oxide of the activator-support is silica, alumina, silica-alumina, aluminophosphate, aluminum phosphate, zinc aluminate, heteropolytungstates, titania, zirconia, magnesia, boria, zinc oxide, mixed oxides thereof, or any combination thereof; and the electron-withdrawing anion used to treat the solid oxide is fluoride, chloride, bromide, iodide, phosphate, triflate, bisulfate, sulfate, fluoroborate, fluorosulfate, trifluoroacetate, phosphate, fluorophosphate, fluorozirconate, fluorosilicate, fluorotitanate, permanganate, substituted or unsubstituted alkanesulfonate, substituted or unsubstituted arenesulfonate, substituted or unsubstituted alkylsulfate, or any combination thereof. 16. A process for manufacturing a product comprising a polyolefin, the process comprising the acts of: manufacturing a product at least a portion of which comprises a polyolefin, wherein the polyolefin is produced by a method comprising the act of: contacting an α-olefin with a catalyst composition under polymerization conditions to form a polymer;wherein the catalyst composition comprises the contact product of an ansa-metallocene and an activator, wherein:the ansa-metallocene comprises a compound having the formula: wherein: M1 is zirconium or hafnium;X′ and X″ are independently F, Cl, Br, or I;E is C or Si;R1 and R2 are independently an alkyl group, an aryl group, or hydrogen;R3A and R3B are independently a hydrocarbyl group, a trihydrocarbylsilyl group, or hydrogen;n is an integer from 0 to 10, inclusive;R4A and R4B are independently a hydrocarbyl group; andthe activator comprises an activator-support comprising a solid oxide treated with an electron-withdrawing anion; andforming the polyolefin into the product. 17. The process of claim 16, wherein the activator comprises an organoaluminum compound having the formula: Al(X5)n(X6)3-n, wherein:X5 is a hydrocarbyl;X6 is a halide, a hydride, an alkoxide or an aryloxide; andn is a number from 1 to 3, inclusive. 18. The process of claim 16, wherein forming the product comprises at least one of extrusion, blow molding, injection molding, rotational molding, sheet extrusion, thermoforming, film blowing, film casting, or profile extrusion. 19. The process of claim 16, wherein the α-olefin comprises a monomer, or a monomer and a comonomer, and wherein the monomer comprises ethylene, propylene, or any combination thereof. 20. The process of claim 19, wherein the comonomer comprises propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, or any combination thereof.
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상세보기
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