α-olefin-cycloolefin copolymers and process for their production
AssigneesTeijin Limited, Bayer Aktiengesellschaft
InventorsHideaki Nitta, Kiyonari Hashidzume, Masaki Takeuchi, Kaoru Iwata
Life of this patent
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Abstract
α-olefin-cycloolefin copolymers which (1) consist essentially of 0-31% by mole of an α-olefin component represented by the following formula (A) wherein R1 is a hydrogen atom or a saturated aliphatic hydrocarbon group of 1-16 carbon atoms, and 61-100% by mole of a cycloolefin component represented by the following formula (B) wherein R2 is a hydrogen atom or a saturated aliphatic hydrocarbon group of 1-16 carbon atoms, and (2) have a reduced viscosity ηsp/c which is in the range of 0.1-10 dl/g as measured in a 0.5 g/dl toluene solution at 30° C., hydrogenated copolymers thereof and a process for their production.
Claims26
An α-olefin-cycloolefin copolymer which (1) consists essentially of 0-39% by mole of an α-olefin component represented by the following formula (A)
- wherein R1 is a hydrogen atom or a saturated aliphatic hydrocarbon group of 1-16 carbon atoms, and 61-100% by mole of a cycloolefin component represented by the following formula (B)
- wherein R2 is a hydrogen atom or a saturated aliphatic hydrocarbon group of 1-16 carbon atoms, (2) has a reduced viscosity ηsp/c in the range of 0.1-10 dl/g as measured in a 0.5 g/dl toluene solution at 30° C., and (3) wherein no peak assignable to melting of a polyethylene and/or ethylene component block is observed in the DSC curve thereof.
An α-olefin-cycloolefin copolymer which (1) consists essentially of repeating units represented by the following formulas (A), (B), (C), and (D):
- wherein R1 is a hydrogen atom or a saturated aliphatic hydrocarbon group of 1-16 carbon atoms,
- wherein R2 is a hydrogen atom or a saturated aliphatic hydrocarbon group of 1-16 carbon atoms,
- wherein n is 0 or 1;
- m is 0 or a positive integer of 1-3;
- p is 0 or 1;
- and R3-R22 are the same or different and each represents a hydrogen atom, a halogen atom, an aromatic hydrocarbon group of 6-10 carbon atoms or a saturated or unsaturated aliphatic hydrocarbon group of 1-12 carbon atoms, or R19 and R20 or R21 and R22 may together form an alkylidene group, or R19 or R20 and R21 or R22 may form, together with the two carbon atoms to which they bond, a ring which may contain at least one double bond or be an aromatic ring,
- wherein q is an integer of 2-8,
- with composition ratios of {A}, {B}, {C} and {D} which represent the molar percents of the respective repeating units (A), (B), (C) and (D) being in ranges such that ({A}+{B})/({C}+{D})=95-99.9/0.1-5, {A}/{B}=0-39/61-100 and {D}/{C}=0-95/5-100, (2) has a reduced viscosity ηsp/c which is in the range of 0.1-10 dl/g as measured in a 0.5 g/dl toluene solution at 30° C., and (3) wherein no peak assignable to melting of a polyethylene and/or ethylene component block is observed in the DSC curve thereof.
An α-olefin-cycloolefin copolymer which (1) consists essentially of repeating units represented by the following formulas (AH), (BH), (CH), and (DH):
- wherein R1 is a hydrogen atom or a saturated aliphatic hydrocarbon group of 1-16 carbon atoms,
- wherein R2 is a hydrogen atom or a saturated aliphatic hydrocarbon group of 1-16 carbon atoms,
- wherein n is 0 or 1;
- m is 0 or a positive integer of 1-3;
- p is 0 or 1;
- and R3-R22 are the same or different and each represents a hydrogen atom, a halogen atom, an aromatic hydrocarbon group of 6-10 carbon atoms or a saturated aliphatic hydrocarbon group of 1-12 carbon atoms, or R19 and R20 or R21 and R22 may together form an alkylidene group, or R19 or R20 and R21 or R22 may form, together with the two carbon atoms to which they bond, a ring which may be an aromatic ring,
- wherein q is an integer of 2-8,
- with composition ratios of {AH}, {BH}, {CH} and {DH} which represent the molar percents of the respective repeating units (AH), (BH), (CH) and (DH) being in ranges such that ({AH}+{BH})/({CH}+{DH})=95-99.9/0.1-5, {AH}/{BH}=0-39/61-100 and {DH}/{CH}=0-95/5-100, (2) has a reduced viscosity ηsp/c which is in the range of 0.1-10 dl/g as measured in a 0.5 g/dl toluene solution at 30° C., and (3) wherein no peak assignable to melting of a polyethylene and/or ethylene component block is observed in the DSC curve thereof.
A process for producing an α-olefin-cycloolefin copolymer, comprising copolymerizing an α-olefin of 2 or more carbon atoms with dicyclopentadiene in the presence of a catalyst comprising at least one metallocene of which the central metal is titanium, zirconium or hafnium and at least one promoter catalyst, while maintaining a mole ratio (F) of the monomers in the reaction system within a range which satisfies the following expression (I)
- F=[dicyclopentadiene]/[α-olefin]>4 (I)
- during the period from the start of polymerization until the conversion of the dicyclopentadiene added to the polymerization reaction system reaches 60%.
A process for producing an α-olefin-cycloolefin copolymer comprising copolymerizing an α-olefin of 2 or more carbon atoms with dicyclopentadiene in the presence of a catalyst comprising at least one metallocene of which the central metal is titanium, zirconium or hafnium and at least one promoter catalyst, while maintaining a mole ratio (F={dicyclopentadiene})/{α-olefin}) of the monomers in the reaction system within a range which satisfies the following expression (II)
- 38/62<F/(F+rα)<48/52 (II)
- wherein rα denotes a monomer reactivity ratio of α-olefin relative to dicyclopentadiene and represents a conversion of said α-olefin, during the period from the start of polymerization until the conversion of the dicyclopentadiene added to the polymerization reaction system reaches 60%.
An α-olefin-cycloolefin copolymer which (1) consists essentially of 0-39% by mole of an α-olefin component represented by the following formula (AH)
- wherein R1 is a hydrogen atom or a saturated aliphatic hydrocarbon group of 1-16 carbon atoms, and 61-100% by mole of a cycloolefin component represented by the following formula (BH)
- wherein R2 is a hydrogen atom or a saturated aliphatic hydrocarbon group of 1-16 carbon atoms, (2) has a reduced viscosity ηsp/c in the range of 0.1-10 dl/g as measured in a 0.5 g/dl toluene solution at 30° C., and (3) wherein no peak assignable to melting of a-polyethylene and/or ethylene component block is observed in the DSC curve thereof.
A process for producing an α-olefin-cycloolefin copolymer, comprising (1) copolymerizing an α-olefin of 2 or more carbon atoms with dicyclopentadiene in the presence of a catalyst comprising at least one metallocene of which the central metal is titanium, zirconium or hafnium and at least one promoter catalyst, while maintaining a mole ratio (F) of the monomers in the reaction system within a range which satisfies the following expression (I)
- F=[dicyclopentadiene]/[α-olefin]>4 (I)
- during the period from the start of polymerization until the conversion of the dicyclopentadiene added to the polymerization reaction system reaches 60%, and (2) hydrogenating the resulting copolymer until the degree of hydrogenation reaches at least 99%.
A process for producing an α-olefin-cycloolefin copolymer comprising (1) copolymerizing an α-olefin of 2 or more carbon atoms with dicyclopentadiene in the presence of a catalyst comprising at least one metallocene of which the central metal is titanium, zirconium or hafnium and at least one promoter catalyst, while maintaining a mole ratio (F=[dicyclopentadiene])/[α-olefin]) of the monomers in the reaction system within a range which satisfies the following expression (II)
- 38/62<F/(F+rα)<48/52 (II)
- wherein r60 denotes a monomer reactivity ratio of α-olefin relative to the DCPD and represents a conversion of said α-olefin, during the period from the start of polymerization until the conversion of the dicyclopentadiene added to the polymerization reaction system reaches 60%, and (2) hydrogenating the resulting copolymer until the degree of hydrogenation reaches at least 99%.
Dependencies are inferred from the claim text.