US4600762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Randum 1-butene copolymer
Assignee: Mitsui Chemicals Inc
•
Filing: 1984-08-09
•
Granted: 1986-07-15
•
Expires: 2004-08-09
Abstract
Abstract A random copolymer consisting essentially of more than 60 to 99 mole % of 1-butene and less than 40 to 1 mole % of propylene, and having (A) a boiling methyl acetate-soluble content of not more than 2% by weight based on the weight of the copolymer, (B) an intrinsic viscosity [ eta ], determined in decalin at 135 DEG C., of 0.5 to 6 dl/g, (C) a n-decane/acetone (1:1 by volume) mixture-soluble content in % by weight based on the weight of the copolymer of less than the value calculated by 4x[ eta ]-1.2, (D) a DSC melting point, determined by a differential scanning calorimeter, of 50 DEG to 130 DEG C., (E) a yield strength, measured by JIS K-7113, of 50 to 300 kg/cm2, (F) an elongation at break, measured by JIS K-7113, of 200 to 1000%, and (G) a tensile strength at break, measured by JIS K-7113, of 150 to 800 kg/cm2.
Inventors
- 👤 Kunisuke Fukui
- 👤 Norio Kashiwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:23
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/04; C08F210/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
150 words
A random copolymer consisting essentially of 65 to 99 mole % of 1-butene and 35 to 1 mole % of propylene, and having (A) a boiling methyl acetate-soluble content of not more than 2% by weight based on the weight of the copolymer, (B) an intrinsic viscosity (η), determined in decalin at 135° C., of 1 to 5 dl/g, (C) a n-decane/acetone (1:1 by volume) mixture-soluble content in % by weight based on the weight of the copolymer of less than the value calculated by 4×(η) -1 .2, (D) a DSC melting point, determined by a differential scanning calorimeter, of 50° to 130° C., (E) a yield strength, measured by JIS K-7113, of 50 to 300 kg/cm 2 , (F) an elongation at break, measured by JIS K-7113, of 200 to 1000%, and (G) a tensile strength at break, measured by JIS K-7113, of 150 to 800 kg/cm 2 .
Claim 2
Dependent Claim
150 words
A random copolymer consisting essentially of 65 to 99 mole % of 1-butene and 35 to 1 mole % of propylene, and having (A) a boiling methyl acetate-soluble content of not more than 2% by weight based on the weight of the copolymer, (B) an intrinsic viscosity (η), determined in decalin at 135° C., of 1 to 5 dl/g, (C) a n-decane/acetone (1:1 by volume) mixture-soluble content in % by weight based on the weight of the copolymer of less than the value calculated by 4×(η) -1 .2, (D) a DSC melting point, determined by a differential scanning calorimeter, of 50° to 130° C., (E) a yield strength, measured by JIS K-7113, of 50 to 300 kg/cm 2 , (F) an elongation at break, measured by JIS K-7113, of 200 to 1000%, and (G) a tensile strength at break, measured by JIS K-7113, of 150 to 800 kg/cm 2 .
Claim 3
Dependent Claim
24 words
The copolymer of claim 1 which consists essentially of 65 to 96 mole % of 1-butene and 35 to 4 mole % of propylene.
Claim 4
Dependent Claim
23 words
The copolymer of claim 1 which further has (H) a torsional rigidity, measured by JIS K6745, of 500 to 3,000 kg/cm 2 .
Claim 5
Dependent Claim
25 words
The copolymer of claim 1 or 3 which further has (I) a Young's modulus, measured by JIS K7113, of 1,000 to 6,000 kg/cm 2 .
Claim 6
Dependent Claim
15 words
The copolymer of claim 1 wherein the elongation at break is not less than 300%.
Claim 7
Dependent Claim
20 words
The copolymer of claim 1 wherein the tensile strength at break (G) is not less than 200 kg/cm 2 .
Claim 8
Dependent Claim
26 words
The copolymer of claim 1 wherein the boiling methyl acetate-soluble content (A) is not more than 1% by weight based on the weight of the copolymer.
Claim 9
Dependent Claim
26 words
The copolymer of claim 1 wherein the boiling methyl acetate-soluble content (A) is not more than 0.5% by weight based on the weight of the copolymer.
Claim 10
Dependent Claim
22 words
The copolymer of claim 1 wherein the n-decane/acetone mixture-soluble content (C) is less than the value calculated by 3.5×(η) -1 .2 (%).
Claim 11
Dependent Claim
23 words
The copolymer of claim 1 wherein (D) the DSC melting point determined by the differential scanning calorimeter, is from 70° to 125° C.
Claim 12
Dependent Claim
18 words
The copolymer of claim 1 wherein the yield strength (E) is not less than 100 kg/cm 2 .
Claim 13
Dependent Claim
43 words
The copolymer of claim 1 wherein the yield strength (E) is from 110 to 200 kg/cm 2 , the elongation at break (F) is from 350 to 1,000%, and the tensile strength at break (G) is from 250 to 600 kg/cm 2 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-07-14 | 1990-01-13 | 1990-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-14 | 1994-01-13 | 1994-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-14 | 1998-01-13 | 1998-07-15 | $7700.00 | Window Closed / Lapsed |