EP0405236A1 — Copolymer of 4-methylpentene-1

Claim 1

Independent Claim 25 words

A polymer of 4-methylpentene-1 having a substantially syndiotactic structure which polymer contains 0 to 30 mol% of an α-olefin unit other than a 4-methylpentene-1 unit.

Claim 2

Dependent Claim 25 words

A polymer of 4-methylpentene-1 having a substantially syndiotactic structure which polymer contains 0 to 30 mol% of an α-olefin unit other than a 4-methylpentene-1 unit.

Claim 3

Dependent Claim 18 words

A polymer according to Claim 1 which does not contain low-tactic 4-methylpentene-1 polymers and accordingly has high tacticity.

Claim 4

Dependent Claim 31 words

A polymer according to Claim 2 wherein a crystallization temperature measured by melting said polymer at 300°C and then dropping its temperature at a rate of 10°C/minute is 160°C or more.

Claim 5

Dependent Claim 29 words

A polymer according to Claim 2 wherein a ratio of the weight average molecular weight to the number average molecular weight of the polymer is from 1.5 to 20.

Claim 6

Dependent Claim 79 words

A homopolymer of 4-methylpentene-1 having a substantially syndiotactic structure in which in a spectrum of ¹³C-NMR measured as a 1,2,4-trichlorobenzene solution, a peak intensity observed at about 43.1 ppm on the basis of tetramethylsilane is at least 0.5 of the total of the peak intensities observed at about 42-44 ppm; the molecular weight measured by gel permeation chromatography is 1,000 or more; and a maximum diffraction line is observed in a spacing of about 9 Å by X-ray diffraction.

Claim 7

Dependent Claim 79 words

A homopolymer of 4-methylpentene-1 having a substantially syndiotactic structure in which in a spectrum of ¹³C-NMR measured as a 1,2,4-trichlorobenzene solution, a peak intensity observed at about 43.1 ppm on the basis of tetramethylsilane is at least 0.5 of the total of the peak intensities observed at about 42-44 ppm; the molecular weight measured by gel permeation chromatography is 1,000 or more; and a maximum diffraction line is observed in a spacing of about 9 Å by X-ray diffraction.

Claim 8

Dependent Claim 60 words

A syndiotactic poly(4-methylpentene-1) in which in a spectrum of ¹³C-NMR measured in the state of a 1,2,4-trichlorobenzene solution, a peak intensity observed at about 43.1 ppm on the basis of tetramethylsilane is at least 0.5 of the total of the peak intensities observed at about 42.0-43.5 ppm; and the molecular weight measured by gel permeation chromatography is 1,000 or more.

Claim 9

Dependent Claim 60 words

A syndiotactic poly(4-methylpentene-1) in which in a spectrum of ¹³C-NMR measured in the state of a 1,2,4-trichlorobenzene solution, a peak intensity observed at about 43.1 ppm on the basis of tetramethylsilane is at least 0.5 of the total of the peak intensities observed at about 42.0-43.5 ppm; and the molecular weight measured by gel permeation chromatography is 1,000 or more.

Claim 10

Dependent Claim 93 words

A copolymer of 4-methylpentene-1 and another α-olefin having a substantially suyndiotactic structure in which in a spectrum of ¹³C-NMR measured as a 1,2,4-trichlorobenzene solution, a peak intensity of the 4-methylpentene-1 unit observed at about 43.1 ppm on the basis of tetramethylsilane is at least 0.4 of the total of the peak intensities of the 4-methylpentene-1 unit observed at about 42-44 ppm; the content of the α-olefin unit other than the 4-methylpentene-1 unit is from 0.1 to 30 mol%; and the intrinsic viscosity measured at 135°C as a tetralin solution is 0.05 or more.

Claim 11

Dependent Claim 93 words

A copolymer of 4-methylpentene-1 and another α-olefin having a substantially suyndiotactic structure in which in a spectrum of ¹³C-NMR measured as a 1,2,4-trichlorobenzene solution, a peak intensity of the 4-methylpentene-1 unit observed at about 43.1 ppm on the basis of tetramethylsilane is at least 0.4 of the total of the peak intensities of the 4-methylpentene-1 unit observed at about 42-44 ppm; the content of the α-olefin unit other than the 4-methylpentene-1 unit is from 0.1 to 30 mol%; and the intrinsic viscosity measured at 135°C as a tetralin solution is 0.05 or more.

Claim 12

Dependent Claim 24 words

A copolymer according to Claim 7 wherein the α-olefin other than 4-methylpentene-1 is an straight-chain or branched α-olefin having 2 to 25 carbon atoms.

Claim 13

Dependent Claim 29 words

A copolymer according to Claim 7 wherein a ratio of the weight average molecular weight to the number average molecular weight of the polymer is from 1.5 to 20.

Claim 14

Dependent Claim 14 words

A copolymer according to Claim 8 wherein the straight-chain α-olefin is ethylene or propylene.

Claim 15

Dependent Claim 81 words

A copolymer of 4-methylpentene-1 and propylene in which in a spectrum of ¹³C-NMR measured as a 1,2,4-trichlorobenzene solution, a peak intensity of the 4-methylpentene-1 unit observed at about 43.1 ppm on the basis of tetramethylsilane is at least 0.5 of the total of the peak intensities of the 4-methylpentene-1 unit observed at about 42.5-43.1 ppm; the content of propylene is from 0.1 to 20% by weight; and the intrinsic viscosity measured at 135°C as a tetralin solution is at least 0.05.

Claim 16

Dependent Claim 81 words

A copolymer of 4-methylpentene-1 and propylene in which in a spectrum of ¹³C-NMR measured as a 1,2,4-trichlorobenzene solution, a peak intensity of the 4-methylpentene-1 unit observed at about 43.1 ppm on the basis of tetramethylsilane is at least 0.5 of the total of the peak intensities of the 4-methylpentene-1 unit observed at about 42.5-43.1 ppm; the content of propylene is from 0.1 to 20% by weight; and the intrinsic viscosity measured at 135°C as a tetralin solution is at least 0.05.

Copolymer of 4-methylpentene-1

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