Patent US3842059A successfully refreshed from Google Patents.
US3842059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylate and methacrylate terminated polystyrene macromolecular monomers having a substantially uniform molecular weight distribution
Assignee: Research Corp
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Filing: 1973-07-02
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Granted: 1974-10-15
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Expires: 1993-07-02
Abstract
Abstract This application discloses a copolymerizable macromolecular monomer having a substantially uniform molecular weight distribution such that its ratio of Mw/Mn is not substantially above about 1.1, wherein Mw is the weight average molecular weight of the macromolecular monomer, and Mn is the number average molecular weight of the macromolecular monomer, said macromolecular monomer being represented by the structural formula: WHEREIN R is lower alkyl and R'' and R'''' are each either hydrogen or methyl, and n is a positive integer having a value of at least about 20.
Inventors
- 👤 R Milkovich
- 👤 M Chiang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:59
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08F; C08F290/00; C08F290/02; C08F290/04; C08F290/044; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/62; C08G18/6204
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
A COPOLYMERIZABLE MACROMOLECULAR MONOMER HAVING A SUBSTANTIALLY UNIFORM MOLECULAR WEIGHT DISTRIBUTION SUCH THAT ITS RATIO OF $W/$N IS NOT SUBSTANTIALLY ABOVE ABOUT 1.1, WHEREIN $W IS THE WEIGHT AVERAGE MOLECULAR WEIGHT OF THE MACROMOLECULAR MONOMER, AND $N IS THEP NUMBER AVERAGE MOLECULAR WEIGHT OF THE MACROMOLECULAR MONOMER, SAID MACROMOLECULAR MONOMER BEING REPRESENTED BY THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
56 words
A COPOLYMERIZABLE MACROMOLECULAR MONOMER HAVING A SUBSTANTIALLY UNIFORM MOLECULAR WEIGHT DISTRIBUTION SUCH THAT ITS RATIO OF $W/$N IS NOT SUBSTANTIALLY ABOVE ABOUT 1.1, WHEREIN $W IS THE WEIGHT AVERAGE MOLECULAR WEIGHT OF THE MACROMOLECULAR MONOMER, AND $N IS THEP NUMBER AVERAGE MOLECULAR WEIGHT OF THE MACROMOLECULAR MONOMER, SAID MACROMOLECULAR MONOMER BEING REPRESENTED BY THE STRUCTURAL FORMULA:
Claim 3
Dependent Claim
15 words
The copOlymerizable macromolecular monomer of claim 1, wherein R'' is hydrogen and R'''' is methyl.
Claim 4
Dependent Claim
17 words
The copolymerizable macromolecular monomer of claim 1, wherein R is represented by the structural formula CH3CH2(CH3)CH-CH .
Claim 5
Dependent Claim
32 words
The copolymerizable macromolecular monomer of claim 1, wherein n is a value such that the molecular weight of the macromolecular monomer is in the range of from about 5,000 to about 50,000.
Claim 6
Dependent Claim
32 words
The copolymerizable macromolecular monomer of claim 1, wherein n is a value such that the molecular weight of the macromolecular monomer is in the range of from about 10,000 to about 35,000.
Claim 7
Dependent Claim
32 words
The copolymerizable macromolecular monomer of claim 1, wherein n is a value such that the molecular weight of the macromolecular monomer is in the range of from about 12,000 to about 25,000.
Claim 8
Dependent Claim
21 words
The copolymerizable macromolecular monomer of claim 1, wherein the ratio of Mw/Mn of said macromolecular monomer is less than about 1.06.
Claim 9
Dependent Claim
56 words
A copolymerizable macromolecular monomer having a substantially uniform molecular weight distribution such that its ratio of Mw/Mn is not substantially above about 1.1, wherein Mw is the weight average molecular weight of the macromolecular monomer, and Mn is the number average molecular weight of the macromolecular monomer, said macromolecular monomer being represented by the structural formula:
Claim 10
Dependent Claim
56 words
A copolymerizable macromolecular monomer having a substantially uniform molecular weight distribution such that its ratio of Mw/Mn is not substantially above about 1.1, wherein Mw is the weight average molecular weight of the macromolecular monomer, and Mn is the number average molecular weight of the macromolecular monomer, said macromolecular monomer being represented by the structural formula:
Claim 11
Dependent Claim
32 words
The copolymerizable macromolecular monomer of claim 8, wherein n has a value such that the molecular weight of the macromolecular monomer is in the range of from about 10,000 to about 35,000.
Claim 12
Dependent Claim
32 words
The copolymerizable macromolecular monomer of claim 8, wherein n has a value such that the molecular weight of the macromolecular monomer is in the range of from about 12,000 to about 25,000.
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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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |