US4801672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Random 1-butene copolymer
Assignee: Mitsui Chemicals Inc
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Filing: 1985-10-29
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Granted: 1989-01-31
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Expires: 2005-10-29
Abstract
Abstract A random 1-butene copolymer comprising 1-butene and an alpha-olefin having 5 to 20 carbon atoms, said copolymer having the following characteristics (A) to (I): (A) it comprises 50 to 99 mole % of the 1-butene component and 1 to 50 mole % of the alpha-olefin component, (B) it has an intrinsic viscosity [ eta ], measured in decalin at 135 DEG C., of from 0.5 to 6 dl/g, (C) it has a melting point [Tm], measured by a differential scanning calorimeter, of from 30 DEG to 120 DEG 0 C., (D) it has a crystallinity, measured by X-ray diffractometry, of from 5 to 60%, (E) the amount [W1 in % by weight] of that portion of it which is soluble in boiling methyl acetate is not more than 2%, and (F) the amount [W2 in % by weight] of that portion of it which is soluble in a 1:1 by volume mixture of acetone and n-decane at 10 DEG C. is less than 5x[ eta ]-1.2.
Inventors
- 👤 Masaki Kohyama
- 👤 Takeshi Muranaka
- 👤 Kunisuke Fukui
- 👤 Norio Kashiwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:35
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/04; C08F210/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
168 words
A random 1-butene copolymer comprising 1-butene and an alpha-olefin selected from the group consisting of 1-pentene, 1-hexene, 4-methyl-1-pentene, 3-methyl-1-pentene, 1-octene, and 1-decene, said copolymer having the following characteristics (A) to (F): (A) it comprises 50 to 99 mole % of the 1-butene component and 1 to 50 mole % of the alpha-olefin component, (B) it has an intrinsic viscosity (η), measured in decalin at 135° C., of from 0.5 to 6 dl/g, (C) it has a melting point (Tm), measured by a differential scanning calorimeter, of from 30° to 120° C., (D) it has a crystallinity, measured by X-ray diffractometry, of from 5 to 60%, (E) the amount (W 1 in % by weight) of that portion of it which is soluble in boiling methyl acetate is not more than 2%, and (F) the amount (W 2 in % by weight) of that portion of it which is soluble in a 1:1 by volume mixture of acetone and n-decane at 10° C. is less than 5×(η) -1 .2.
Claim 2
Dependent Claim
168 words
A random 1-butene copolymer comprising 1-butene and an alpha-olefin selected from the group consisting of 1-pentene, 1-hexene, 4-methyl-1-pentene, 3-methyl-1-pentene, 1-octene, and 1-decene, said copolymer having the following characteristics (A) to (F): (A) it comprises 50 to 99 mole % of the 1-butene component and 1 to 50 mole % of the alpha-olefin component, (B) it has an intrinsic viscosity (η), measured in decalin at 135° C., of from 0.5 to 6 dl/g, (C) it has a melting point (Tm), measured by a differential scanning calorimeter, of from 30° to 120° C., (D) it has a crystallinity, measured by X-ray diffractometry, of from 5 to 60%, (E) the amount (W 1 in % by weight) of that portion of it which is soluble in boiling methyl acetate is not more than 2%, and (F) the amount (W 2 in % by weight) of that portion of it which is soluble in a 1:1 by volume mixture of acetone and n-decane at 10° C. is less than 5×(η) -1 .2.
Claim 3
Dependent Claim
29 words
The random 1-butene copolymer of claim 1 which comprises 60 to 98 mole % of 1-butene and 2 to 40 mole % of the C 5 -C 20 alpha-olefin.
Claim 4
Dependent Claim
20 words
The random 1-butene copolymer of claim 1 which has a yield strength (G) of 10 to 200 kg/cm 2 .
Claim 5
Dependent Claim
22 words
The random 1-butene copolymer of claim 1 which has a tensile strength at break (H) of 100 to 1000 kg/cm 2 .
Claim 6
Dependent Claim
18 words
The random 1-butene copolymer of claim 1 which has an elongation at break (I) of at least 300%.
Claim 7
Dependent Claim
27 words
The random 1-butene copolymer of claim 1 which has a torsional rigidity (J), measured by the method of JIS K-6745, of 100 to 2000 kg/cm 2 .
Claim 8
Dependent Claim
27 words
The random 1-butene copolymer of claim 1 which has a Young's modulus (K), measured by the method of JIS K-7113, of 200 to 4000 kg/cm 2 .
Claim 9
Dependent Claim
24 words
The random 1-butene copolymer of claim 1 wherein W 2 in weight % (F) is 0.1×[η] -1 .2 to less than 5×[η] -1 .2.
Claim 10
Dependent Claim
22 words
The random 1-butene copolymer of claim 1 wherein W 2 in weight % (F) is 0.2×[η] -1 .2 to 4×[η] -1 .2.
Claim 11
Dependent Claim
18 words
The random 1-butene copolymer of claim 1 wherein W 2 in weight % (F) is 0.3×[η] -1 .2.
Claim 12
Dependent Claim
19 words
The random 1-butene copolymer of claim 1 which includes from 2 to 30 mole % of the alpha-olefin component.
Claim 13
Dependent Claim
11 words
The random copolymer of claim 1 wherein the alpha-olefin is 4-methyl-1-pentene.
Claim 14
Dependent Claim
13 words
The random 1-butene copolymer of claim 1 wherein the alpha-olefin component is 1-hexene.
Claim 15
Dependent Claim
13 words
The random 1-butene copolymer of claim 1 wherein the alpha-olefin component is 1-octene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |