Patent US4259468A successfully refreshed from Google Patents.
US4259468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene-α-olefin-polyene rubbery terpolymer and process for production thereof
Assignee: Mitsui Chemicals Inc
•
Filing: 1979-08-07
•
Granted: 1981-03-31
•
Expires: 1999-08-07
Abstract
Abstract A rubbery copolymer of ethylene, an alpha -olefin having 3 to 10 carbon atoms and a polyene, characterized by having (A) an ethylene/ alpha -olefin mole ratio of from 50/50 to 95/5, (B) an iodine value of from 5 to 50, (C) an intrinsic viscosity [ eta ], measured in decaline at 135 DEG C., of from 1.0 to 6.0 dl/g, (D) a weight average molecular weight/number average molecular weight ratio (Mw/Mn) of from 3 to 15, and (E) an iodine value index alpha 1 for the lower molecular weight components and an iodine value index alpha 2 for the higher molecular weight components, said alpha 1 and alpha 2 falling within the ranges -30</= alpha 1</=0 and 0< alpha 2</=30. Said copolymer can be obtained by copolymerizing ethylene, the alpha -olefin having 3 to 10 carbon atoms and polyene at a temperature of from about 40 DEG C. to about 100 DEG C. in the presence of a catalyst composed of (a) a vanadium compound of the formula VO(OR)nX3-n in which R represents a hydrocarbon group, X represents a halogen atom, and n is a positive number within the range of 0<n</=3, and (b) an organoaluminum compound of the formula R'mAlX'3-m in which R' represents a hydrocarbon group, X' represents a halogen atom, and m is a positive number within the range of 1<m</=1.25, the Al/V mole ratio being 2 to less than 5.
Inventors
- 👤 Hirokazu Kajiura
- 👤 Kazuhiko Murata
- 👤 Hidekuni Oda
- 👤 Tatsuo Yasutake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:25
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/16; C08F210/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
A rubbery copolymer of ethylene, an α-olefin having 3 to 10 carbon atoms and a non-conjugated diene, characterized by having (A) an ethylene/α-olefin mole ratio of from 50/50 to 95/5, (B) an iodine value of from 5 to 50, (C) an intrinsic viscosity [η], measured in decalin at 135° C., of from 1.0 to 6.0 dl/g, (D) a weight average molecular weight/number average molecular weight ratio (Mw/Mn) of from 4 to 12, and (E) an iodine value index α 1 for the lower molecular weight components and an iodine value index α 2 for the higher molecular weight components, said α 1 and α 2 falling within the ranges -10≦α 1 ≦-1 and 1≦α 2 ≦10.
Claim 2
Dependent Claim
116 words
A rubbery copolymer of ethylene, an α-olefin having 3 to 10 carbon atoms and a non-conjugated diene, characterized by having (A) an ethylene/α-olefin mole ratio of from 50/50 to 95/5, (B) an iodine value of from 5 to 50, (C) an intrinsic viscosity [η], measured in decalin at 135° C., of from 1.0 to 6.0 dl/g, (D) a weight average molecular weight/number average molecular weight ratio (Mw/Mn) of from 4 to 12, and (E) an iodine value index α 1 for the lower molecular weight components and an iodine value index α 2 for the higher molecular weight components, said α 1 and α 2 falling within the ranges -10≦α 1 ≦-1 and 1≦α 2 ≦10.
Claim 3
Dependent Claim
24 words
A rubbery copolymer as recited in claim 1, wherein the α-olefin is propylene and the mole ratio in (A) is from 50/50 to 90/10.
Claim 4
Dependent Claim
24 words
A rubbery copolymer as recited in claim 1, wherein the α-olefin is 1-butene and the mole ratio in (A) is from 80/20 to 95/5.
Claim 5
Dependent Claim
17 words
A rubbery copolymer as recited in claim 1, wherein the non-conjugated diene is a cyclic non-conjugated diene.
Claim 6
Dependent Claim
17 words
A rubbery copolymer as recited in claim 4, wherein the cyclic non-conjugated diene is 5-ethylidene-2-norbornene or dicyclopentadiene.
Claim 7
Dependent Claim
228 words
A rubbery copolymer of ethylene, an α-olefin having 3 to 10 carbon atoms and a non-conjugated diene, characterized by having (A) an ethylene/α-olefin mole ratio of from 50/50 to 95/5, (B) an iodine value of from 5 to 50, (C) an intrinsic viscosity [η], measured in decalin at 135° C., of from 1.0 to 6.0 dl/g, (D) a weight average molecular weight/number average molecular weight ratio (Mw/Mn) of from 4 to 12, and (E) an iodine value index α 1 for the lower molecular weight components and an iodine value index α 2 for the higher molecular weight components, said α 1 and α 2 falling within the ranges -10≦α 1 ≦-1 and 1≦α 2 ≦10 said copolymer being obtained by copolymerizing ethylene, the α-olefin having 3 to 10 carbon atoms and the non-conjugated diene at a temperature of from about 40° C. to about 100° C. in the presence of a catalyst composed of (a) a vanadium compound of the formula VO(OR).sub.n X.sub.3-n wherein R represents a hydrocarbon group, X represents a halogen atom, and n is a positive number within the range of 0<n≦3, and (b) an organoaluminum compound of the formula R'.sub.m AlX'.sub.3-m wherein R' represents a hydrocarbon group, X' represents a halogen atom, and m is a positive number within the range of 1<m≦1.25, the Al/V mole ratio being 2 to less than 5.
Claim 8
Dependent Claim
228 words
A rubbery copolymer of ethylene, an α-olefin having 3 to 10 carbon atoms and a non-conjugated diene, characterized by having (A) an ethylene/α-olefin mole ratio of from 50/50 to 95/5, (B) an iodine value of from 5 to 50, (C) an intrinsic viscosity [η], measured in decalin at 135° C., of from 1.0 to 6.0 dl/g, (D) a weight average molecular weight/number average molecular weight ratio (Mw/Mn) of from 4 to 12, and (E) an iodine value index α 1 for the lower molecular weight components and an iodine value index α 2 for the higher molecular weight components, said α 1 and α 2 falling within the ranges -10≦α 1 ≦-1 and 1≦α 2 ≦10 said copolymer being obtained by copolymerizing ethylene, the α-olefin having 3 to 10 carbon atoms and the non-conjugated diene at a temperature of from about 40° C. to about 100° C. in the presence of a catalyst composed of (a) a vanadium compound of the formula VO(OR).sub.n X.sub.3-n wherein R represents a hydrocarbon group, X represents a halogen atom, and n is a positive number within the range of 0<n≦3, and (b) an organoaluminum compound of the formula R'.sub.m AlX'.sub.3-m wherein R' represents a hydrocarbon group, X' represents a halogen atom, and m is a positive number within the range of 1<m≦1.25, the Al/V mole ratio being 2 to less than 5.
References Cited (Backward Citations)
GB856737A
Cited
GB1014874A
Cited
GB1030827A
Cited
GB1030989A
Cited
US3645992A
Cited
US3674755A
Cited
GB1294922A
Cited
US4078131A
Cited
US4125699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |