Patent US3719652A successfully refreshed from Google Patents.
US3719652A
Expired / Lapsed
US
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Polymerization of cyclopentene
Assignee: Bayer AG
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Filing: 1971-05-05
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Granted: 1973-03-06
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Expires: 1991-05-05
Abstract
Abstract Process for producing cyclopentene polymers which comprises contacting cyclopentene at a temperature of from -60* to +60*C with a catalyst comprising A TANTALUM COMPOUND (I) a halogen compound (II) an organo-aluminum compound (III) the components being in a molar ratio of I : II : III 1 : 0.310 : 0.5-15.
Inventors
- 👤 W Oberkirch
- 👤 G Pampus
- 👤 P Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:17
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
83 words
A process for producing cyclopentene polymer which comprises contacting cyclopentene at a temperature from -60* to 60*C. with a catalyst comprising (a) a tantalum compound, (b) a halogen compound selected from the group consisting of allyl halide, 3-chlorocyclo-pentene, benzyl chloride, tert. alkyl halide, Alpha -halogen ketone, Alpha -halogen alcohol, Alpha -halogen ether, halohydric acid and a salt of halohydric acid wherein ''''halide'''' and ''''halogen'''' are chlorine, bromine and iodine and (c) an organoaluminum compound, the molar ratio of (a): (b): (c) being 1:0.3-10:0.5-15.
Claim 2
Dependent Claim
83 words
A process for producing cyclopentene polymer which comprises contacting cyclopentene at a temperature from -60* to 60*C. with a catalyst comprising (a) a tantalum compound, (b) a halogen compound selected from the group consisting of allyl halide, 3-chlorocyclo-pentene, benzyl chloride, tert. alkyl halide, Alpha -halogen ketone, Alpha -halogen alcohol, Alpha -halogen ether, halohydric acid and a salt of halohydric acid wherein ''''halide'''' and ''''halogen'''' are chlorine, bromine and iodine and (c) an organoaluminum compound, the molar ratio of (a): (b): (c) being 1:0.3-10:0.5-15.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein said contacting is carried out in an inert solvent.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein (a) is tantalum halide or tantalum oxyhalide.
Claim 5
Dependent Claim
43 words
The process of claim 1 wherein (b) is allyl chloride, 3-chlorocyclopentene, benzyl chloride, tert. butyl chloride, tert. amyl chloride, Alpha -chloroacetone, Alpha -bromoacetone, Alpha -chloroethanol, 1,3-dichloro-2-propanol, Alpha -chlorocyclohexanol, Alpha -chlorophenol, epichlorhydrin, epibromhydrin, Alpha -chlorodiethylether, hydrogen chloride, ferric chloride, cupric chloride or hydrogen bromide.
Claim 6
Dependent Claim
15 words
The process of claim 1 wherein (c) is aluminum trialkyl, aluminum dialkylhalide or aluminum alkyldihalide.
Claim 7
Dependent Claim
86 words
A process for producing trans-polypentenamers having 80 to 95 percent trans-configuration which comprises adding, at a temperature of from -60 to 60*C., cyclopentene, a halogen compound selected from the group consisting of allyl halide, 3-chloro-cyclopentene, benzyl chloride, tert. alkyl halide, Alpha -halogen ketone, Alpha -halogen alcohol, Alpha -halogen ether, halohydric acid and a salt of halohydric acid wherein ''''halide'''' and ''''halogen'''' are chlorine, bromine and iodine and an organo-aluminum compound to a solution of a tantalum chloride in an inert organic solvent and recovering resulting polymer.
Claim 8
Dependent Claim
86 words
A process for producing trans-polypentenamers having 80 to 95 percent trans-configuration which comprises adding, at a temperature of from -60 to 60*C., cyclopentene, a halogen compound selected from the group consisting of allyl halide, 3-chloro-cyclopentene, benzyl chloride, tert. alkyl halide, Alpha -halogen ketone, Alpha -halogen alcohol, Alpha -halogen ether, halohydric acid and a salt of halohydric acid wherein ''''halide'''' and ''''halogen'''' are chlorine, bromine and iodine and an organo-aluminum compound to a solution of a tantalum chloride in an inert organic solvent and recovering resulting polymer.
Claim 9
Dependent Claim
64 words
A catalyst comprising (a) a tantalum compound, (b) a halogen compound selected from the group consisting of allyl halide, 3-chlorocyclo-pentene, benzyl chloride, tert. alkyl halide, Alpha -halogen ketone, Alpha -halogen alcohol, Alpha -halogen ether, halohydric acid and a salt of halohydric acid wherein ''''halide'''' and ''''halogen'''' are chlorine, bromine and iodine and (c) an organo-aluminum compound, the molar ratio of (a):(b):(c) being 1: 0.3-10:0.5-15.
Claim 10
Dependent Claim
64 words
A catalyst comprising (a) a tantalum compound, (b) a halogen compound selected from the group consisting of allyl halide, 3-chlorocyclo-pentene, benzyl chloride, tert. alkyl halide, Alpha -halogen ketone, Alpha -halogen alcohol, Alpha -halogen ether, halohydric acid and a salt of halohydric acid wherein ''''halide'''' and ''''halogen'''' are chlorine, bromine and iodine and (c) an organo-aluminum compound, the molar ratio of (a):(b):(c) being 1: 0.3-10:0.5-15.
Claim 11
Dependent Claim
13 words
The catalyst of claim 7 wherein (a) is tantalum halide or tantalum oxyhalide.
Claim 12
Dependent Claim
43 words
The catalyst of claim 7 wherein (b) is allyl chloride, 3-chlorocyclopentene, benzyl chlOride, tert. butyl chloride, tert. amyl chloride, Alpha -chloroacetone, Alpha -bromoacetone, Alpha -chloroethanol, 1,3-dichloro-2propanol, Alpha -chlorocyclohexanol, Alpha -chlorophenol, epichlorhydrin, epibromhydrin, Alpha -chlorodiethyl-ether, hydrogen chloride, ferric chloride, cupric chloride or hydrogen bromide.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |