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Patent US3622548A successfully refreshed from Google Patents.
US3622548A
Expired / Lapsed
US
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Polymers and catalyst compositions
Assignee: Huels AG
•
Filing: 1967-09-01
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Granted: 1971-11-23
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Expires: 1987-09-01
Abstract
Abstract Readily vulcanizable ethylene-olefin copolymers having a desired molecular weight range are produced on the basis of a Ziegler catalyst activated by a perchlorocrotonic acid halide or ester.
Inventors
- 👤 Hans Emde
- 👤 Kurt Benedikter
- 👤 Peter Hegenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:33
CPC Classifications
C; C08; C08F; C08F210/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
14 words
A catalyst composition as defined by claim 1 wherein X is Cl or Br.
Claim 2
Dependent Claim
14 words
A catalyst composition as defined by claim 1 wherein X is n-butoxy or i-butoxy.
Claim 3
Dependent Claim
20 words
A catalyst composition as defined by claim 1 wherein a mixture of perchlorocrotonic acid esters is employed as the activator.
Claim 4
Dependent Claim
27 words
A catalyst composition as defined by claim 1 wherein a mixture of a perchlorocrotonyl bromide or chloride with a perchlorocrotonic acid ester is employed as the activator.
Claim 5
Dependent Claim
21 words
A catalyst composition as defined by claim 1, wherein the molar ratio of a to b is 20:1 to 5.1 respectively.
Claim 6
Dependent Claim
28 words
A catalyst composition as defined by claim 1, wherein said activator is present in a molar ratio of from 0.1 to 5.0 millimols per millimol of component b.
Claim 7
Dependent Claim
24 words
A catalyst composition as defined by claim 7, wherein said molar ratio is 0.5 to 2.0 millimols of activator per millimol of component b.
Claim 8
Dependent Claim
42 words
A process for the production of amorphous polyolefins which process comprises copolymerizing ethylene with another olefin selected from the group consisting of a 1-olefin, a multiple olefin, and mixtures thereof, in the presence of a catalyst composition as defined by claim 1.
Claim 9
Dependent Claim
31 words
In a process for the production of amorphous copolymers of ethylene and at least one other olefinic monomer, the improvement which comprises employing a catalyst composition as defined by claim 1.
Claim 10
Dependent Claim
14 words
A process as defined by claim 10 wherein said copolymer comprises ethylene and propylene.
Claim 11
Dependent Claim
13 words
A process as defined by claim 11 wherein X is n-butoxy or i-butoxy.
Claim 12
Dependent Claim
42 words
A process for the production of amorphous polyolefins which process comprises copolymerizing ethylene with another olefin selected from the group consisting of a 1-olefin, a multiple olefin, and mixtures thereof, in the presence of a catalyst composition as defined by claim 6.
Claim 13
Dependent Claim
42 words
A process for the production of amorphous polyolefins which process comprises copolymerizing ethylene with another olefin selected from the group consisting of a 1-olefin, a multiple olefin, and mixtures thereof, in the presence of a catalyst composition as defined by claim 7.
Claim 14
Dependent Claim
42 words
A process for the production of amorphous polyolefins which process comprises copolymerizing ethylene with another olefin selected from the group consisting of a 1-olefin, a muLtiple olefin, and mixtures thereof, in the presence of a catalyst composition as defined by claim 8.
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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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |