Patent US3670036A successfully refreshed from Google Patents.
US3670036A
Expired / Lapsed
US
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Stabilized methylene chloride for high temperature applications
Assignee: Dow Chemical Co
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Filing: 1970-02-02
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Granted: 1972-06-13
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Expires: 1990-02-02
Abstract
Abstract Methylene chloride stabilized with 1-10 percent by weight of a nitroalkane, 0.1 to 5 percent by weight of an alkylene oxide and 0-10 percent of a dialkoxyalkane has been found to be especially good for high temperature applications even in continuous or intermittent contact with a reactive metal such as aluminum.
Inventors
- 👤 Thomas A Vivian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:18
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
8 words
The methylene chloride of claim 1 containing nitromethane.
Claim 2
Dependent Claim
16 words
The methylene chloride of claim 1 containing 3 to 8 percent by weight of the nitroalkane.
Claim 3
Dependent Claim
9 words
The methylene chloride of claim 1 containing propylene oxide.
Claim 4
Dependent Claim
15 words
The methylene chloride of claim 1 containing 0.4 to 3 percent of the alkylene oxide.
Claim 5
Dependent Claim
15 words
The methylene chloride of claim 1 containing a dialkoxymethane of up to 10 carbon atoms.
Claim 6
Dependent Claim
8 words
The methylene chloride of claim 1 containing dimethoxymethane.
Claim 7
Dependent Claim
16 words
The methylene chloride of claim 1 containing 2 to 5 percent by weight of the dialkoxyalkane.
Claim 8
Dependent Claim
11 words
The methylene chloride of claim 1 containing nitromethane and propylene oxide.
Claim 9
Dependent Claim
12 words
The methylene chloride of claim 1 containing nitromethane, propylene oxide and dimethoxymethane.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |