US4623475A
Expired / Lapsed
US
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Fluorochlorohydrocarbon compositions
Assignee: Daikin Industries Ltd
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Filing: 1984-09-28
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Granted: 1986-11-18
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Expires: 2004-09-28
Abstract
Abstract The invention provides fluorochlorohydrocarbon compositions containing as a stabilizer a boron compound or a boron compound and an ester of phosphorous acid. The compositions are for use as a heating medium, a foaming agent for the preparation of foamed products of plastics or the like.
Inventors
- 👤 Naonori Enjo
- 👤 Yuhkow Harada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:23
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
A fluorochlorohydrocarbon composition comprising: (i) a fluorochlorohydrocarbon, (ii) a boron compound selected from the group consisting of boron oxide, boric acid, alkali metal salt of boric acid, metaboric acid, alkali metal salt of metaboric acid, phenyl ester and alkyl ester of boric acid, phenylboronic acid, alkyl ester of phenylboronic acid, diphenylboronic acid, and alkyl ester of diphenylboronic acid, and (iii) an ester of phosphoric acid selected from the group consisting of dialkyl phosphite having 2 to 30 carbon atoms, diphenyl phosphite having 2 to 30 carbon atoms and dialkylpentaerythritol diphosphite having 7 to 45 carbon atoms; the amount of the boron compound being at least 5% by weight based on the total weight of the boron compound and the ester of phosphorous acid and the total amount of these two compounds being about 0.01 to about 5% by weight based on the weight of the fluorochlorohydrocarbon.
Claim 2
Dependent Claim
146 words
A fluorochlorohydrocarbon composition comprising: (i) a fluorochlorohydrocarbon, (ii) a boron compound selected from the group consisting of boron oxide, boric acid, alkali metal salt of boric acid, metaboric acid, alkali metal salt of metaboric acid, phenyl ester and alkyl ester of boric acid, phenylboronic acid, alkyl ester of phenylboronic acid, diphenylboronic acid, and alkyl ester of diphenylboronic acid, and (iii) an ester of phosphoric acid selected from the group consisting of dialkyl phosphite having 2 to 30 carbon atoms, diphenyl phosphite having 2 to 30 carbon atoms and dialkylpentaerythritol diphosphite having 7 to 45 carbon atoms; the amount of the boron compound being at least 5% by weight based on the total weight of the boron compound and the ester of phosphorous acid and the total amount of these two compounds being about 0.01 to about 5% by weight based on the weight of the fluorochlorohydrocarbon.
Claim 3
Dependent Claim
17 words
A fluorochlorohydrocarbon composition as defined in claim 1 in which fluorochlorohydrocarbon has 1 to 6 carbon atoms.
Claim 4
Dependent Claim
17 words
A fluorochlorohydrocarbon composition as defined in claim 2 in which fluorochlorohydrocarbon has 1 to 2 carbon atoms.
Claim 5
Dependent Claim
28 words
A fluorochlorohydrocarbon composition as defined in claim 1 in which the weight ratio of the boron compound to the ester of phosphorous acid ranges from 5:95 to 95:5.
Claim 6
Dependent Claim
38 words
A fluorochlorohydrocarbon composition as defined in claim 1 in which the total amount of the boron compound and the ester of phosphorous acid is about 0.1 to about 5% by weight based on the weight of the fluorochlorohydrocarbon.
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) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |