US4282343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly-(alpha-alkoxy)acrylamide and poly-(alpha-alkoxy)acrylamide complexes
Assignee: Chevron USA Inc
•
Filing: 1980-02-07
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Granted: 1981-08-04
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Expires: 2000-02-07
Abstract
Abstract As new products, poly-(alpha-alkoxy)acrylamides containing 1 to 12, preferably 1 to 5 carbon atoms in the alkoxy group. The foregoing polymeric materials are readily complexed with water or low molecular weight hydroxy- or thiol-containing organic compounds. The polymers are useful as oil recovery agents.
Inventors
- 👤 James L. Platt, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:08
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/588; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/58; Y; Y10; Y10S; Y10S524/00; Y10S524/917
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
28 words
Poly-(alpha-alkoxy)acrylamide having the formula: ##STR3## wherein R is an alkyl group of 1 to 12 carbon atoms and x is an integer ranging from about 100 to 100,000.
Claim 2
Dependent Claim
28 words
Poly-(alpha-alkoxy)acrylamide having the formula: ##STR3## wherein R is an alkyl group of 1 to 12 carbon atoms and x is an integer ranging from about 100 to 100,000.
Claim 3
Dependent Claim
20 words
Poly-(alpha-alkoxy)acrylamide according to claim 1 having a molecular weight of about 10,000 to 10,000,000 determined by applying the Mark-Houwink-Sakurada equation.
Claim 4
Dependent Claim
15 words
Poly-(alpha-alkoxy)acrylamide according to claim 1 wherein the alkoxy group has 1 to 5 carbon atoms.
Claim 5
Dependent Claim
11 words
Poly-(alpha-alkoxy)acrylamide according to claim 1, wherein the alkoxy group is methoxy.
Claim 6
Dependent Claim
22 words
Poly-(alpha-alkoxy)acrylamide according to claim 2 having a molecular weight in about the range 20,000 to 200,000 determined by applying the Mark-Houwink-Sakurada equation.
Claim 7
Dependent Claim
42 words
Complexed poly(alpha-alkoxy)acrylamide having the formula ##STR4## wherein R is an alkyl group of 1 to 12 carbon atoms and x is an integer ranging from about 100 to 100,000, and M is water or a low molecular weight hydroxy-containing or thiol-containing compound.
Claim 8
Dependent Claim
42 words
Complexed poly(alpha-alkoxy)acrylamide having the formula ##STR4## wherein R is an alkyl group of 1 to 12 carbon atoms and x is an integer ranging from about 100 to 100,000, and M is water or a low molecular weight hydroxy-containing or thiol-containing compound.
Claim 9
Dependent Claim
21 words
Complexed poly(alpha-alkoxy)acrylamide according to claim 6 in which M is a low molecular weight compound containing less than 4 carbon atoms.
Claim 10
Dependent Claim
13 words
Complexed poly(alpha-alkoxy)acrylamide according to claim 6, wherein M is water or formic acid.
References Cited (Backward Citations)
US2490756A
Cited
US4138541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |