US2829125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clear terpolymers
Assignee: Monsanto Chemicals Ltd
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Filing: 1953-12-07
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Granted: 1958-04-01
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Expires: 1973-12-07
Abstract
No abstract record available.
Inventors
- 👤 Robert J Slocombe
- 👤 George L Wesp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:16
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/04; C08F220/06; C08F16/00; C08F16/36; C08F212/00; C08F212/02; C08F212/04; C08F212/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A CLEAR TERPOLYMER PREPARED BY FREE-RADICAL-INITIATED BATCH POLYMERIZATION OF A MONOMERIC MIXTURE CONSISTING OF (A) A MOMOMER SELECTED FROM THE GROUP CONSISTING OF STYRENE, VINYLTOLUENE, AND VINYLXYLENE, (B) METHYL VINLY SISTING OF ACRYLIC ACID, METHACRYLIC ACID, METHACRYLONITRILE, SISTING OF ACRYLIC ACID, METHACRYLIC ACID, METHACRYLONITRILE, ALKYL METHACRYLATE, MONALKYL FUMARATE, MONALKYL MALEATE, THE PROPORTIONS OF THE THREE MONOMERS IN SAID MONOMERIC MIXTURE BEING LIMITED TO THOSE IN THE AREA OF MIXTUES THAT PRODUCE CLEAR TERPOLYMERS, SAID AREA ENCOMPASSING THE LINE JOINING THE POLYMERIZATION AZEOTROPE COMPOSITION OF THE PARTICULAR (A) AND METHYL VINYL KETONE ON THE ONE HAND AND THE PARTICULAR (A) AND THE PARTICULAR (C) ON THE OTHER HAND AS PLOTTED ON AN EQUILATERAL TRIANGULAR COORDINATE GRAPH.
Claim 2
Dependent Claim
115 words
A CLEAR TERPOLYMER PREPARED BY FREE-RADICAL-INITIATED BATCH POLYMERIZATION OF A MONOMERIC MIXTURE CONSISTING OF (A) A MOMOMER SELECTED FROM THE GROUP CONSISTING OF STYRENE, VINYLTOLUENE, AND VINYLXYLENE, (B) METHYL VINLY SISTING OF ACRYLIC ACID, METHACRYLIC ACID, METHACRYLONITRILE, SISTING OF ACRYLIC ACID, METHACRYLIC ACID, METHACRYLONITRILE, ALKYL METHACRYLATE, MONALKYL FUMARATE, MONALKYL MALEATE, THE PROPORTIONS OF THE THREE MONOMERS IN SAID MONOMERIC MIXTURE BEING LIMITED TO THOSE IN THE AREA OF MIXTUES THAT PRODUCE CLEAR TERPOLYMERS, SAID AREA ENCOMPASSING THE LINE JOINING THE POLYMERIZATION AZEOTROPE COMPOSITION OF THE PARTICULAR (A) AND METHYL VINYL KETONE ON THE ONE HAND AND THE PARTICULAR (A) AND THE PARTICULAR (C) ON THE OTHER HAND AS PLOTTED ON AN EQUILATERAL TRIANGULAR COORDINATE GRAPH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |