US2694702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soluble chloromethylated polymers of styrene and alpha-methyl styrene, their quaternary ammonium salts and method of making the same
Assignee: Dow Chemical Co
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Filing: 1951-04-13
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Granted: 1954-11-16
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Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
- 👤 Giffin D Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:21
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A RESINOUS COMPOSITION WHICH IS SOLUBLE IN AT LEAST ONE OF THE LIQUIDS DIOXANE AND A MIXTURE OF EQUAL PARTS BY VOLUME OF WATER AND DIOXANE, WHICH RESINOUS COMPOSITION IS A MEMBER OF THE GROUP CONSISTING OF THE TOLUENESOLUBLE CHLOROMETHYLATED POLYMERS OF AT LEAST ONE ALKYL AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF STYRENE AND ALPHA-METHYL STYRENE, SAID CHLOROMETHYLATED POLYMER CONTAINING ON THE AROMATIC NUCLEI AN AVERAGE OF FROM 0.1 TO 1 CHLOROMETHYL RADICAL PER AROMATIC NUCLEUS IN THE POLYMER, AND AMINATED DERIVATIVE THEREOF WHICH ARE THE REACTION PRODUCTS OF SAID CHLOROMETHYLATED POLYMERS AND A TERTIARY AMINE.
Claim 2
Dependent Claim
98 words
A RESINOUS COMPOSITION WHICH IS SOLUBLE IN AT LEAST ONE OF THE LIQUIDS DIOXANE AND A MIXTURE OF EQUAL PARTS BY VOLUME OF WATER AND DIOXANE, WHICH RESINOUS COMPOSITION IS A MEMBER OF THE GROUP CONSISTING OF THE TOLUENESOLUBLE CHLOROMETHYLATED POLYMERS OF AT LEAST ONE ALKYL AROMATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF STYRENE AND ALPHA-METHYL STYRENE, SAID CHLOROMETHYLATED POLYMER CONTAINING ON THE AROMATIC NUCLEI AN AVERAGE OF FROM 0.1 TO 1 CHLOROMETHYL RADICAL PER AROMATIC NUCLEUS IN THE POLYMER, AND AMINATED DERIVATIVE THEREOF WHICH ARE THE REACTION PRODUCTS OF SAID CHLOROMETHYLATED POLYMERS AND A TERTIARY AMINE.
References Cited (Backward Citations)
US2559529A
Cited
US2629710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |