EP0403962A2
Expired / Lapsed
EP
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Fluorine-containing alcoholbased dehydrating agent and method of drying articles
Assignee: Daikin Industries Ltd
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Filing: 1990-06-15
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Granted: —
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Expires: 2010-06-15
Abstract
Abstract The invention provides a dehydrating agent comprising at least one of fluorine-containing alcohols; a dehydrating agent comprising at least one of fluorine-containing alcohols and water; and a method of dehydrating and drying an article having a surface moistened with residual water, the method comprising immersing the article in a dehydrating agent comprising at least one of fluorine-containing alcohols or comprising at least one of fluorine-containing alcohols and water, and drying the article after the immersion.
Inventors
- 👤 Yukio Omure
- 👤 Masahiro Noguchi
- 👤 Naoyoshi Hanatani
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 03:30
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01D53/28; B01D12/00; C; C11; C11D; C11D7/00; C11D7/50; C11D7/5004; C11D7/5018; F; F26; F26B; F26B5/00; F26B5/005
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
10 words
A dehydrating agent comprising at least one of fluorine-containing alcohols.
Claim 2
Dependent Claim
10 words
A dehydrating agent comprising at least one of fluorine-containing alcohols.
Claim 3
Dependent Claim
33 words
A dehydrating agent as defined in claim 1 wherein the fluorine-containing alcohol is at least one of the alcohols having at least two carbon atoms and at least two fluorine atoms per molecule.
Claim 4
Dependent Claim
62 words
A dehydrating agent as defined in claim 2 wherein the fluorine-containing alcohol is at least one alcohol selected from the group consisting of the following alcohols: wherein a, c, e, g and i each represent an integer in the range of 1 to 5, and b, d, f, h and j each represent an integer in the range of 1 to 3.
Claim 5
Dependent Claim
21 words
A dehydrating agent as defined in claim 3 wherein the fluorine-containing alcohol is at least one of trifluoroethanol, tetrafluoropropanol and pentafluoropropanol.
Claim 6
Dependent Claim
14 words
A dehydrating agent as defined in claim 4 wherein the fluorine-containing alcohol is pentafluoropropanol.
Claim 7
Dependent Claim
12 words
A dehydrating agent comprising at least one of fluorine-containing alcohols and water.
Claim 8
Dependent Claim
12 words
A dehydrating agent comprising at least one of fluorine-containing alcohols and water.
Claim 9
Dependent Claim
33 words
A dehydrating agent as defined in claim 6 wherein the fluorine-containing alcohol is at least one of the alcohols having at least two carbon atoms and at least two fluorine atoms per molecule.
Claim 10
Dependent Claim
62 words
A dehydrating agent as defined in claim 7 wherein the fluorine-containing alcohol is at least one alcohol selected from the group consisting of the following alcohols: wherein a, c, e, g and i each represent an integer in the range of 1 to 5, and b, d, f, h and j each represent an integer in the range of 1 to 3.
Claim 11
Dependent Claim
21 words
A dehydrating agent as defined in claim 8 wherein the fluorine-containing alcohol is at least one of trifluoroethanol, tetrafluoropropanol and pentafluoropropanol.
Claim 12
Dependent Claim
14 words
A dehydrating agent as defined in claim 9 wherein the fluorine-containing alcohol is pentafluoropropanol.
Claim 13
Dependent Claim
27 words
A dehydrating agent as defined in claim 6 wherein the amount of water is up to 20% of the combined weight of the fluorine-containing alcohol and water.
Claim 14
Dependent Claim
27 words
A dehydrating agent as defined in claim 11 wherein the amount of water is up to 10% of the combined weight of the fluorine-containing alcohol and water.
Claim 15
Independent Claim
49 words
A method of dehydrating and drying an article having a surface moistened with residual water, the method comprising immersing the article in a dehydrating agent comprising at least one of fluorine-containing alcohols or comprising at least one of fluorine-containing alcohols and water, and drying the article after the immersion.
Claim 16
Independent Claim
49 words
A method of dehydrating and drying an article having a surface moistened with residual water, the method comprising immersing the article in a dehydrating agent comprising at least one of fluorine-containing alcohols or comprising at least one of fluorine-containing alcohols and water, and drying the article after the immersion.
Claim 17
Dependent Claim
23 words
A method of drying an article by dehydration according to claim 13 wherein the dehydrating agent comprises at least one of fluorine-containing alcohols.
Claim 18
Dependent Claim
25 words
A method of drying an article by dehydration according to claim 13 wherein the dehydrating agent comprises at least one of fluorine-containing alcohols and water.
References Cited (Backward Citations)
No citation records indexed.
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