US4024326A
Expired / Lapsed
US
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Process for preparing ethylene-carbon monoxide copolymers using a peroxydicarbonate catalyst
Assignee: Millennium Petrochemicals Inc
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Filing: 1975-10-14
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Granted: 1977-05-17
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Expires: 1995-10-14
Abstract
Abstract High melting ethylene-carbon monoxide copolymers are prepared by copolymerizing ethylene and carbon monoxide at relatively low temperatures and pressures using a peroxy dicarbonate catalyst. The preferred catalysts are dicyclohexylperoxydicarbonate and dicetylperoxydicarbonate.
Inventors
- 👤 Donald E. Hudgin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:11
CPC Classifications
C; C08; C08G; C08G67/00; C08G67/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
24 words
An improved process for preparing ethylene-carbon monoxide copolymers comprising reacting a mixture of ethylene and carbon monoxide in the presence of a peroxydicarbonate catalyst.
Claim 2
Dependent Claim
24 words
An improved process for preparing ethylene-carbon monoxide copolymers comprising reacting a mixture of ethylene and carbon monoxide in the presence of a peroxydicarbonate catalyst.
Claim 3
Dependent Claim
31 words
The process of claim 1 wherein the peroxydicarbonate is present in an amount effective to produce the desired result up to about 5%, based on the total weight of monomeric components.
Claim 4
Dependent Claim
20 words
The process of claim 1 wherein the reaction is carried out at a pressure of about 300 to 2000 psig.
Claim 5
Dependent Claim
20 words
The process of claim 1 wherein the reaction is carried out at a pressure of about 500 to 1500 psig.
Claim 6
Dependent Claim
17 words
The process of claim 1 wherein the reaction is carried out in the presence of a solvent.
Claim 7
Dependent Claim
17 words
The process of claim 1 wherein at least one additional monomer is added to the reaction mixture.
Claim 8
Dependent Claim
20 words
The process of claim 1 wherein the reaction is carried out at a temperature of about 20° to 100° C.
Claim 9
Dependent Claim
22 words
The process of claim 1 wherein the ratio of ethylene to carbon monoxide in the reaction mixture is about 1:4 to 4:1.
Claim 10
Dependent Claim
20 words
The process of claim 1 wherein the peroxydicarbonate is a member of the group consisting of di(2-ethylhexyl)peroxydicarbonate, dicyclohexylperoxydicarbonate, and dicetylperoxydicarbonate.
Claim 11
Dependent Claim
10 words
The process of claim 9 wherein said peroxydicarbonate is dicyclohexylperoxydicarbonate.
Claim 12
Dependent Claim
10 words
The process of claim 9 wherein said peroxydicarbonate is dicetylperoxydicarbonate.
References Cited (Backward Citations)
US2680763A
Cited
US2495286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |