Films comprising ethylene-based polymers and methods of making same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08L-023/08
C08J-005/18
B32B-027/32
B32B-027/08
출원번호
US-0438044
(2013-09-30)
등록번호
US-9695290
(2017-07-04)
우선권정보
EP-13152304 (2013-01-23)
국제출원번호
PCT/US2013/062574
(2013-09-30)
국제공개번호
WO2014/081505
(2014-05-30)
발명자
/ 주소
Malakoff, Alan M.
출원인 / 주소
ExxonMobil Chemical Patents Inc.
대리인 / 주소
Arechederra, III, Leandro
인용정보
피인용 횟수 :
0인용 특허 :
20
초록▼
Films including a Layer A comprising 50.0 to 100.0 wt. %, based on the weight of the Layer A, of an ethylene-based polymer composition having therein a hafnium:zirconium (ppm/ppm) ratio 1.0, a CDBI less than 50%, and a g′vis≧0.98; wherein the Layer A is substantially free of polyethylene having 0.50
Films including a Layer A comprising 50.0 to 100.0 wt. %, based on the weight of the Layer A, of an ethylene-based polymer composition having therein a hafnium:zirconium (ppm/ppm) ratio 1.0, a CDBI less than 50%, and a g′vis≧0.98; wherein the Layer A is substantially free of polyethylene having 0.50≦g′vis≦0.85 are described. Particular films are suitable as cast films for TD shrink and draw tape bag applications.
대표청구항▼
1. A film, comprising: a Layer A comprising 50.0 to 100.0 wt. %, based on the weight of the Layer A, of an ethylene-based polymer composition, the ethylene-based polymer composition having therein a hafnium:zirconium (ppm/ppm) ratio >1.0, a CDBI35.0 kpsi. 13. The film of claim 1, wherein the polyeth
1. A film, comprising: a Layer A comprising 50.0 to 100.0 wt. %, based on the weight of the Layer A, of an ethylene-based polymer composition, the ethylene-based polymer composition having therein a hafnium:zirconium (ppm/ppm) ratio >1.0, a CDBI35.0 kpsi. 13. The film of claim 1, wherein the polyethylene has 0.60≦g′vis≦0.80. 14. The film of claim 1, wherein the polyethylene is a polyethylene formed by a high-pressure process. 15. The film of claim 1, wherein the Layer A is substantially free of one or more of: a) a heterogeneously branched linear polyethylene having a g′vis≧0.98, preferably 0.99 or above;b) an ethylene copolymer comprising ≧50.0 wt. % ethylene-derived units and ≦50.0 wt. % of a C3 to C20 comonomer-derived units, based upon the weight of the copolymer, a CDBI of 60% or more, and density of 0.910 to 0.950 g/cm3; andc) an ethylene copolymer comprising units derived from ethylene and at least one alpha olefin having at least 5 carbon atoms, having a Melt Index of from 0.1 to 15; a CDBI of at least 70%, and a density of from 0.910 to 0.930 g/cm3. 16. The film of claim 1, wherein the film is a blown, cast or coextruded film. 17. The film of claim 1, wherein the film is a cast film. 18. The film of claim 1, wherein the film is a monolayer film. 19. The film of claim 1, further comprising a Layer B in surface contact with a first side of Layer A; and Layer C in surface contact with a second side of Layer A. 20. A method of increasing TD shrink, the method comprising: a) providing a polyethylene composition comprising 50.0 to 100.0 wt. % of an ethylene-based polymer, the ethylene-based polymer composition having a hafnium:zirconium (ppm/ppm) ratio >1.0, a CDBI less than 50%, and a g′vis≧0.98; and 0 to 50.0 wt. % of a second ethylene-based polymer, the second ethylene-based polymer composition having a hafnium:zirconium (ppm/ppm) ratio 1.0, a CDBI less than 50%, a density of 0.940 to 0.965 g/cm3, a melt index of 3.0 to 5.0 g/10 min., and a g′vis≧0.98; wherein the film is substantially free of a polyethylene having 0.50≦g′vis≦0.85, wherein the film has a TD shrink of at least 10.0% greater than a reference film consisting essentially of a second ethylene-based polymer, the second ethylene-based polymer composition having a hafnium:zirconium (ppm/ppm) ratio 1.0, a CDBI less than 50%, and a g′vis≧0.98; wherein the film is substantially free of a polyethylene having 0.50≦g′vis≦0.85, and wherein the film has a Dart A Impact Strength of 400.0 to 1400.0 g/mil and an MD Elmendorf Tear of 400.0 to 2000.0 g/mil.
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이 특허에 인용된 특허 (20)
Jenkins, III, John M.; Jones, Russell L.; Jones, Thomas M., Fluidized bed reaction systems.
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