US3862098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-olefin terminated polystyrene macromolecular monomers having a substantially uniform molecular weight distribution
Assignee: Research Corp
•
Filing: 1973-07-02
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Granted: 1975-01-21
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Expires: 1993-07-02
Abstract
Abstract 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. 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 macaromolecular monomer being represented by the structural formula:
Inventors
- 👤 Ralph Milkovich
- 👤 Mutong T Chiang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:13
CPC Classifications
C; C08; C08G; C08G85/00; C08C; C08C19/00; C08C19/30; C08C19/42; C08C19/44; C08F; C08F290/00; C08F290/02; C08F290/04; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/28; C08G18/40; C08G18/62; C08G18/6204; Y; Y10; Y10S; Y10S525/00; Y10S525/91; Y10S525/913; Y10S525/925
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
14 words
The copolymerizable macromolecular monomer of claim 1, wherein R'' and R'''' are each hydrogen.
Claim 2
Dependent Claim
16 words
The copolymerizable macromolecular monomer of claim 1, wherein R is represented by the structural formula CH3CH2(CH3)CH-.
Claim 3
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 4
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 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 12,000 to about 25,000.
Claim 6
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 7
Dependent Claim
56 words
A copolymerizable marcomolecular 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 8
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 9
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.
References Cited (Backward Citations)
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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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |