Process for producing olefin/aromatic vinyl copolymer
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C08F-212/02
C08F-212/00
출원번호
US-0477548
(2002-05-15)
우선권정보
JP-2001-144266(2001-05-15)
국제출원번호
PCT/JP02/004711
(2002-05-15)
§371/§102 date
20031113
(20031113)
국제공개번호
WO02/102862
(2002-12-27)
발명자
/ 주소
Arai,Toru
Otsu,Toshiaki
Nakajima,Masataka
출원인 / 주소
Denki Kagaku Kogyo Kabushiki Kaisha
대리인 / 주소
Oblon, Spivak, McClelland, Maier &
인용정보
피인용 횟수 :
4인용 특허 :
20
초록▼
An olefin/aromatic vinyl compound copolymer which is excellent in transparency and which satisfies flexibility and heat resistance simultaneously can be produced by carrying out polymerization in such a manner that at least one of conditions: (a) the polymerization is carried out to an aromatic viny
An olefin/aromatic vinyl compound copolymer which is excellent in transparency and which satisfies flexibility and heat resistance simultaneously can be produced by carrying out polymerization in such a manner that at least one of conditions: (a) the polymerization is carried out to an aromatic vinyl compound monomer conversion ratio of at least 50 mol % when the polymerization is completed, and (b) the polymer concentration is at least 10 mass % relative to the polymerization solution when the polymerization is completed, is satisfied, and the olefin partial pressure is changed so that the olefin partial pressure when the polymerization is completed is from 1.3 to 20 times the olefin partial pressure at the initiation of the polymerization.
대표청구항▼
The invention claimed is: 1. A process for producing an olefin/aromatic vinyl compound copolymer, which comprises carrying out polymerization in such a manner that (1) at least one of conditions (a) polymerization is carried out to an aromatic vinyl compound monomer conversion ratio of at least 50
The invention claimed is: 1. A process for producing an olefin/aromatic vinyl compound copolymer, which comprises carrying out polymerization in such a manner that (1) at least one of conditions (a) polymerization is carried out to an aromatic vinyl compound monomer conversion ratio of at least 50 mol % when the polymerization is completed, and (b) the polymer concentration is at least 10 mass % relative to the polymerization solution when the polymerization is completed, is satisfied, and (2) olefin partial pressure is changed during the polymerization so that the olefin partial pressure when the polymerization is completed is from 1.3 to 20 times the olefin partial pressure at the initiation of the polymerization. 2. A process for producing an olefin/aromatic vinyl compound copolymer, which comprises carrying out copolymerization in such a manner that conditions such that the aromatic vinyl compound monomer conversion ratio is at least 50 mol % when the polymerization is completed, and that the polymer concentration is at least 10 mass % relative to the polymerization solution when the polymerization is completed, are satisfied, and olefin partial pressure is changed during the polymerization so that the olefin partial pressure when the polymerization is completed is from 1.3 to 20 times the olefin partial pressure at the initiation of the polymerization. 3. An olefin/aromatic vinyl compound copolymer, which is obtained by the production process as defined in claim 1, wherein an A hardness, and at least one melting point among melting points with a heat of crystal fusion of from 10 J/g to 150 J/g as measured by DSC, satisfy the following relation: description="In-line Formulae" end="lead"A<Tm< 120description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"70<A< 88description="In-line Formulae" end="tail" wherein Tm is at least one melting point (째 C.) with a heat of crystal fusion of from 10 J/g to 150 J/g as measured by DSC, and A is A hardness. 4. The olefin/aromatic vinyl compound copolymer according to claim 3, which has an aromatic vinyl compound content of from 1 to 99 mol %. 5. The olefin/aromatic vinyl compound copolymer according to claim 3, wherein the olefin is ethylene. 6. The olefin/aromatic vinyl compound copolymer according to claim 3, wherein the aromatic vinyl compound is styrene. 7. The olefin/aromatic vinyl compound copolymer according to claim 3, wherein the aromatic vinyl compound content, and at least one melting point among melting points with a heat of crystal fusion of from 10 J/g to 150 J/g as measured by DSC, satisfy the following relation: description="In-line Formulae" end="lead"-3쨌St+ 120<Tm<120description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"if (5< St<15); anddescription="In-line Formulae" end="tail" description="In-line Formulae" end="lead"75<Tm< 120description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"if (15< St<50)description="In-line Formulae" end="tail" wherein Tm is a melting point (째 C.) with a heat of crystal fusion of from 10 J/g to 150 J/g as measured by DSC, and St is aromatic vinyl compound content (mol %). 8. The olefin/aromatic vinyl compound copolymer according to claim 3, wherein the ratio of MFR measured at a measurement temperature of 230째 C. at loads of 10 kg and 2 kg (I10/I2) is from 10 to 50. 9. The olefin/aromatic vinyl compound copolymer according to claim 3, wherein the molecular weight distribution (Mw/Mn), as calculated as standard polystyrene, is from 2 to 6, as obtained by GPC (gel permeation chromatography) measurement employing RI (differential refractive index meter) as a detector employing o-dichlorobenzene as a measurement solvent at a measurement temperature of 145째 C. 10. The process for producing an olefin/aromatic vinyl compound copolymer according to claim 1, wherein a catalyst used for the polymerization is a single site coordination polymerization catalyst comprising a transition metal compound and a cocatalyst. 11. The process for producing an olefin/aromatic vinyl compound copolymer according to claim 10, wherein the single site coordination polymerization catalyst is a polymerization catalyst comprising a transition metal compound represented by the following general formula (1) and a cocatalyst: wherein each of A and B which are independent of each other, is an unsubstituted or substituted benzindenyl group, an unsubstituted or substituted cyclopentadienyl group, an unsubstituted or substituted indenyl group, or an unsubstituted or substituted fluorenyl group; Y is a methylene group, a silylene group, an ethylene group, a germylene group or a boron residue, which has bonds to A and B and which further has hydrogen or a group containing a C1-20 hydrocarbon (the group may contain from 1 to 3 nitrogen, boron, silicon, phosphorus, selenium, oxygen or sulfur atom(s)), as substituents, the substituents may be the same or different from one another, and Y may have a cyclic structure; each X is independently hydrogen, a halogen, a C1-15 alkyl group, a C3-20 alkenyl group, a C6-10 aryl group, a C8-12 alkylaryl group, a silyl group having a C1-4 hydrocarbon substituent, a C1-10 alkoxy group, or an amide group having hydrogen or a C1-22 hydrocarbon substituent, and n is an integer of 0, 1 or 2, provided that when n is 2, the two X's may have a bond to each other; and M is zirconium, hafnium or titanium. 12. The process for producing an olefin/aromatic vinyl compound copolymer according to claim 10, wherein at least one of A and B in the general formula (1) is a group selected from an unsubstituted or substituted benzindenyl group and an unsubstituted or substituted indenyl group. 13. An olefin/aromatic vinyl compound copolymer, wherein the A hardness, and at least one melting point among melting points with a heat of crystal fusion of from 10 J/g to 150 J/g as measured by DSC, satisfy the following relation: description="In-line Formulae" end="lead"A<Tm< 120description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"70<A< 88description="In-line Formulae" end="tail" wherein Tm is a melting point (째 C.), and A is A hardness. 14. An olefin/aromatic vinyl compound copolymer, wherein the ratio of MFR measured at a measurement temperature of 230째 C. at loads of 10 kg and 2 kg (I10/I2) is from 10 to 50. 15. The olefin/aromatic vinyl compound copolymer according to claim 14, wherein the molecular weight distribution (Mw/Mn), as calculated as standard polystyrene, is from 2 to 6, as obtained by GPC (gel permeation chromatography) measurement employing RI (differential refractive index meter) as a detector employing o-dichlorobenzene as a measurement solvent at a measurement temperature of 145째 C. 16. An olefin/aromatic vinyl compound copolymer, which is obtained by the production process as defined in claim 2, wherein an A hardness, and at least one melting point among melting points with a heat of crystal fusion of from 10 J/g to 150 J/g as measured by DSC, satisfy the following relation: description="In-line Formulae" end="lead"A<Tm< 120description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"70<A< 88description="In-line Formulae" end="tail" wherein Tm is at least one melting point (째 C.) with a heat of crystal fusion of from 10 J/g to 150 J/g as measured by DSC, and A is A hardness. 17. The olefin/aromatic vinyl compound copolymer according to claim 13, which has a total light transmittance of at least 80% in a form of a molded product of 1 mm in thickness. 18. The olefin/aromatic vinyl compound copolymer according to claim 13, which has a haze of at most 15% in a form of a molded product of 1 mm in thickness. 19. The olefin/aromatic vinyl compound copolymer according to claim 14, which has a total light transmittance of at least 80% in a form of a molded product of 1 mm in thickness. 20. The olefin/aromatic vinyl compound copolymer according to claim 14, which has a haze of at most 15% in a form of a molded product of 1 mm in thickness. 21. The process for producing an olefin/aromatic vinyl compound copolymer according to claim 11, wherein Y in formula (I) is a cyclohexylidene group or a cyclopentylidene group. 22. The olefin/aromatic vinyl compound copolymer as claimed in claim 3, which has a haze of at most 15% in a form of a molded product of 1 mm in thickness. 23. An olefin/aromatic vinyl compound copolymer, which is obtained by the production process as defined in claim 1, wherein the ratio of MFR measured at a measurement temperature of 230째 C. at loads of 10 kg and 2 kg (I10/I2) is from 10 to 50. 24. The olefin/aromatic vinyl compound copolymer as claimed in claim 23, which has a haze of at most 15% in a form of a molded product of 1 mm in thickness. 25. The olefin/aromatic vinyl compound copolymer according to claim 23, which has an aromatic vinyl compound content of from 1 to 99 mol %. 26. The olefin/aromatic vinyl compound copolymer according to claim 23, wherein the olefin is ethylene. 27. The olefin/aromatic vinyl compound copolymer according to claim 23, wherein the aromatic vinyl compound is styrene. 28. The olefin/aromatic vinyl compound copolymer according to claim 23, wherein the aromatic vinyl compound content, and at least one melting point among melting points with a heat of crystal fusion of from 10 J/g to 150 J/g as measured by DSC, satisfy the following relation: description="In-line Formulae" end="lead"-3쨌St+ 120<Tm<120description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"if (5< St<15); anddescription="In-line Formulae" end="tail" description="In-line Formulae" end="lead"75<Tm< 120description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"if (15< St<50)description="In-line Formulae" end="tail" wherein Tm is a melting point (째 C.) with a heat of crystal fusion of from 10 J/g to 150 J/g as measured by DSC, and St is aromatic vinyl compound content (mol %). 29. The olefin/aromatic vinyl compound copolymer according to claim 23, wherein the molecular weight distribution (Mw/Mn), as calculated as standard polystyrene, is from 2 to 6, as obtained by GPC (gel permeation chromatography) measurement employing RI (differential refractive index meter) as a detector employing o-dichlorobenzene as a measurement solvent at a measurement temperature of 145째 C. 30. The olefin/aromatic vinyl compound copolymer as claimed in claim 16, which has a haze of at most 15% in a form of a molded product of 1 mm in thickness. 31. The olefin/aromatic vinyl compound copolymer, which is obtained by the production process as defined in claim 2, wherein the ratio of MFR measured at a measurement temperature of 230째 C. at loads of 10 kg and 2 kg (I10/I2) is from 10 to 50. 32. The olefin/aromatic vinyl compound copolymer as claimed in claim 31, which has a haze of at most 15% in a form of a molded product of 1 mm in thickness.
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이 특허에 인용된 특허 (20)
Guest Martin J. ; Cheung Yunwa W. ; Gathers John J. ; Chum Pak-Wing S., Blends of .alpha.-olefin/vinyl aromatic monomer and/or aliphatic or cycloaliphatic vinyl or vinylidene monomer interpolymers.
Arai, Toru; Nakajima, Masataka; Otsu, Toshiaki, Cross-copolymerized olefin/styrene/diene copolymer, process for the production of the same and uses thereof.
Guest Martin J. ; Gathers John J. ; Cheung Yunwa W. ; Chum Pak-Wing S., Sheets, films, fibers foams or latices prepared from blends of substantially random interpolymers.
Toru Arai JP; Toshiaki Otsu JP; Shigeru Suzuki JP, Transition metal catalyst component for polymerization, aromatic vinyl compound polymer having stereoregularity and method for its preparation by means of the catalyst component.
Arai Toru,JPX ; Otsu Toshiaki,JPX ; Suzuki Shigeru,JPX ; Nakajima Masataka,JPX, Transition metal compound as catalyst component for polymerization, aromatic vinyl compound-olefin copolymer having stereoregularity and method for its preparation by means of the transition metal co.
Arai Toru,JPX ; Otsu Toshiaki,JPX ; Suzuki Shigeru,JPX, Transition metal compound as catalyst component in method for producing aromatic vinyl compound polymer or aromatic vinyl compound-olefin copolymer having stereoregularity.
Cheung, Yunwa W.; Guest, Martin J.; Rosen, Robert K.; Kolthammer, Brian W., α-olefin/vinyl or vinylidene aromatic interpolymer product and process for making same using multiple catalyst systems.
Arai, Toru; Hasegawa, Masaru; Tsukamoto, Ayumu; Miyama, Akira; Suzuki, Shigeru, Process for production of cross copolymers, cross copolymers obtained by the process, and use thereof.
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