US4009151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of 2-vinyl-fluorenone and derivatives thereof
Assignee: Xerox Corp
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Filing: 1975-10-30
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Granted: 1977-02-22
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Expires: 1995-10-30
Abstract
Abstract Disclosed is a composition of matter characterized by the structural formula: ##STR1## wherein R 1 is hydrogen or methyl and R 2 , R 3 and R 4 are hydrogen, halogen or aliphatic groups containing 1 to 4 carbon atoms. Also disclosed are vinyl polymers of the above compounds.
Inventors
- 👤 James M. Pearson
- 👤 John F. Yanus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:43
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/587; C07C49/687; C07C49/697; C07C49/657; C07C49/683; C08; C08F; C08F112/00; C08F112/02; C08F112/32; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/442; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
50 words
A homopolymeric composition consisting of repeating units characterized by the structural formula: ##STR6## wherein R 1 is hydrogen or methyl, R 2 , R 3 and R 4 are hydrogen or aliphatic groups containing from 1 to 4 carbon atoms and n is a number representing the degree of polymerization.
Claim 2
Dependent Claim
50 words
A homopolymeric composition consisting of repeating units characterized by the structural formula: ##STR6## wherein R 1 is hydrogen or methyl, R 2 , R 3 and R 4 are hydrogen or aliphatic groups containing from 1 to 4 carbon atoms and n is a number representing the degree of polymerization.
Claim 3
Dependent Claim
18 words
The polymeric composition of claim 1 wherein n is a number within the range of 10 to 5,000.
Claim 4
Dependent Claim
18 words
The polymeric composition of claim 1 wherein R 2 , R 3 , and R 4 are H.
Claim 5
Dependent Claim
12 words
The polymeric composition of claim 3 in which R 1 is H.
Claim 6
Dependent Claim
81 words
A copolymeric composition consisting of units characterized by the structural formula: ##STR7## wherein R 1 is hydrogen or methyl, R 2 R 3 and R 4 are hydrogen or aliphatic groups containing from 1 to 4 carbon atoms and N is a number representing the degree of polymerization which are copolymerized with another vinyl monomer selected from the group consisting of styrene, vinyl chloride, methyl methacrylate, vinyl carbazole, vinyl naphthalene, isoprene, butadiene, a substituted styrene, acrylonitrile, vinyl pyridine and vinyl acetate.
Claim 7
Dependent Claim
81 words
A copolymeric composition consisting of units characterized by the structural formula: ##STR7## wherein R 1 is hydrogen or methyl, R 2 R 3 and R 4 are hydrogen or aliphatic groups containing from 1 to 4 carbon atoms and N is a number representing the degree of polymerization which are copolymerized with another vinyl monomer selected from the group consisting of styrene, vinyl chloride, methyl methacrylate, vinyl carbazole, vinyl naphthalene, isoprene, butadiene, a substituted styrene, acrylonitrile, vinyl pyridine and vinyl acetate.
References Cited (Backward Citations)
US3370045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |