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US4594177A
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Surface demoisturizing composition and use thereof
Assignee: Arkema France SA
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Filing: 1983-02-22
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Granted: 1986-06-10
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Expires: 2003-02-22
Abstract
Abstract Demoisturizing composition used for the displacement of liquid water, comprising a chlorofluorocarbon that is liquid at room temperature, containing a surface-active agent responding to the formula: ##STR1## in which R is an alkyl group in C 6 -C 18 R' is an alkyl group in C 1 to C 2 R" is an alkyl group in C 1 to C 18 p is a value ranging between 1 and 2 characterized in that the surface-active composition is prepared by mixing the following three constituents: ##STR2## where R F represents a straight or branched perfluorinated alkyl chain of formula C q F 2q+1 in which q is a whole number ranging between 2 and 20 and where X is a divalent bond group that may be partially halogenated and R 1 and R 2 represent a hydrogen atom, an alkyl radical or a hydroxyalkyl radical, containing less than 6 carbon atoms.
Inventors
- 👤 Andre Lantz
- 👤 Henri Mathais
- 👤 Gerard Dupuis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:27
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02809; C03; C03C; C03C23/00; C03C23/0085; C09; C09K; C09K3/00; C09K3/18; F; F26; F26B; F26B5/00; F26B5/005
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
186 words
A demoisturizing composition for the displacement of liquid water comprising a chlorofluorocarbon having at least two carbon atoms that is liquid at room temperature, a sufficient amount of a surfaceactive agent dissolved therein so as to impart water displacement characteristics to the composition, said surface-active agent corresponding to the formula: ##STR34## in which R is an alkyl group containing 6 to 18 carbon atoms; R' is an alkyl group containing 1 to 2 carbon atoms; R" is an alkyl group containing 1 to 18 carbon atoms; and p is a value ranging between 1 and 2 and wherein said surface-active agent is prepared by mixing the following compounds: ##STR35## where R f represents a straight or branched perfluorinated alkyl chain of formula C q F 2q+1 in which q is a whole number ranging between 2 and 20 and where X is a divalent bond group, which can be partially halogenated, and R 1 and R 2 represent a hydrogen atom, an alkyl radical or a hydroxyalkyl radical, containing less than six carbon atoms, and wherein ##STR36## is at least partially present as a soluble hydrochloride.
Claim 2
Dependent Claim
186 words
A demoisturizing composition for the displacement of liquid water comprising a chlorofluorocarbon having at least two carbon atoms that is liquid at room temperature, a sufficient amount of a surfaceactive agent dissolved therein so as to impart water displacement characteristics to the composition, said surface-active agent corresponding to the formula: ##STR34## in which R is an alkyl group containing 6 to 18 carbon atoms; R' is an alkyl group containing 1 to 2 carbon atoms; R" is an alkyl group containing 1 to 18 carbon atoms; and p is a value ranging between 1 and 2 and wherein said surface-active agent is prepared by mixing the following compounds: ##STR35## where R f represents a straight or branched perfluorinated alkyl chain of formula C q F 2q+1 in which q is a whole number ranging between 2 and 20 and where X is a divalent bond group, which can be partially halogenated, and R 1 and R 2 represent a hydrogen atom, an alkyl radical or a hydroxyalkyl radical, containing less than six carbon atoms, and wherein ##STR36## is at least partially present as a soluble hydrochloride.
Claim 3
Dependent Claim
12 words
The composition according to claim 1 in which the chlorofluorocarbon is trichloro-1,1,2-trifluoro-1,2,2-ethane.
Claim 4
Dependent Claim
28 words
The composition according to claim 1 in which the cationic part of the surface-active agent is the didodecyldimethyl ammonium cation or mixtures of homologues principally containing that cation.
Claim 5
Dependent Claim
28 words
The composition according to claim 1 in which the cationic part of the surface-active agent is the dioctadecyldimethyl ammonium cation or mixtures of homologues principally containing that cation.
Claim 6
Dependent Claim
19 words
The composition according to claim 1 in which the alkylphosphoric acid is a mixture of monobutyl and dibutylphoric acids.
Claim 7
Dependent Claim
19 words
The composition according to claim 1 in which the alkylphosphoric acid is a mixture of monooctyl and dioctylphoric acids.
Claim 8
Dependent Claim
32 words
The composition according to claim 1 in which the fluorinated amine responds to the formula: R.sub.F C.sub.2 H.sub.4 SO.sub.2 NHC.sub.3 H.sub.6 N(CH.sub.3).sub.2 where R F has the meaning described in claim 1.
Claim 9
Dependent Claim
23 words
The composition according to claim 1 in which the fluorinated amine responds to the formula: C.sub.6 F.sub.13 C.sub.2 H.sub.4 SO.sub.2 NHC.sub.3 H.sub.6 N(CH.sub.3).sub.2
Claim 10
Dependent Claim
23 words
The composition according to claim 1 in which the amount of surface active agent ranges from about 10 to 30% of the composition.
Claim 11
Dependent Claim
23 words
The composition according to claim 1 in which the amount of surface active agent ranges from about 0.05 to 5.0 gram/liter of chlorofluorocarbon.
Claim 12
Dependent Claim
22 words
The composition according to claim 1 wherein the amount of surface active agent ranges from about 0.1 to 1.0 gram/liter of chlorofluorocarbon.
Claim 13
Dependent Claim
23 words
The composition according to claim 1 in which the alkyl phosphate acids are a mixture of monoalkyl phosphoric acid and dialkyl phosphoric acid.
Claim 14
Dependent Claim
27 words
The composition according to claim 12 in which the proportion by weight of the monoalkyl phosphoric acid to dialkyl phosphoric acid is between about 60:40 and 40:60.
Claim 15
Dependent Claim
21 words
The process of removing water from a surface which comprises contacting the surface with a demoisturizing composition according to claim 1.
Claim 16
Dependent Claim
155 words
A demoisturizing composition for the displacement of liquid water comprising trichloro-1,1,2-trifluoro-1,2,2-ethane and a sufficient amount of a surface-active agent corresponding to the formula: ##STR37## where said surface-active agent is prepared by mixing the following compounds: ##STR38## (R"O).sub.p (HO).sub.2-p PO.sub.2 H, and (2) R.sub.F C.sub.2 H.sub.4 SO.sub.2 NHC.sub.3 H.sub.6 N(CH.sub.3).sub.2 ( 3) wherein: ##STR39## is a didodecyl dimethyl ammonium cation, a dioctadecyl dimethyl ammonium cation, or mixtures of homologues principally containing either of those cations; (R"O) p (HO) 2-p PO 2 H is a mixture of monobutyl and dibutyl phosphoric acids or a mixture of monooctyl and dioctyl phosphoric acids; and R F is a straight or branched perfluorinated alkyl chain of formula C q F 2q+1 in which q is a whole number ranging between 2 and 20, and wherein R f C 2 H 4 SO 2 NHC 3 H 6 N(CH 3 ) 2 is at least partially present as a soluble hydrochloride.
Claim 17
Dependent Claim
155 words
A demoisturizing composition for the displacement of liquid water comprising trichloro-1,1,2-trifluoro-1,2,2-ethane and a sufficient amount of a surface-active agent corresponding to the formula: ##STR37## where said surface-active agent is prepared by mixing the following compounds: ##STR38## (R"O).sub.p (HO).sub.2-p PO.sub.2 H, and (2) R.sub.F C.sub.2 H.sub.4 SO.sub.2 NHC.sub.3 H.sub.6 N(CH.sub.3).sub.2 ( 3) wherein: ##STR39## is a didodecyl dimethyl ammonium cation, a dioctadecyl dimethyl ammonium cation, or mixtures of homologues principally containing either of those cations; (R"O) p (HO) 2-p PO 2 H is a mixture of monobutyl and dibutyl phosphoric acids or a mixture of monooctyl and dioctyl phosphoric acids; and R F is a straight or branched perfluorinated alkyl chain of formula C q F 2q+1 in which q is a whole number ranging between 2 and 20, and wherein R f C 2 H 4 SO 2 NHC 3 H 6 N(CH 3 ) 2 is at least partially present as a soluble hydrochloride.
Claim 18
Dependent Claim
27 words
The composition according to claim 15 in which the proportion by weight of the monoalkyl phosphoric acid to dialkyl phosphoric acid is between about 60:40 and 40:60.
Claim 19
Dependent Claim
23 words
The composition according to claim 15 in which the amount of surface active agent ranges between about 0.05 and 5 gram/liter of trichloro-1,1,2-trifluoro-1,2,2-ethane.
Claim 20
Dependent Claim
23 words
The composition according to claim 15 in which the amount of surface active agent ranges between about 0.1 and 2.5 gram/liter of trichloro-1,1,2-trifluoro-1,2,2-ethane.
Claim 21
Dependent Claim
21 words
The composition of claim 15 wherein the amount of surface active agent ranges between about 10 and 30% of the composition.
Claim 22
Dependent Claim
16 words
The process of removing water from a surface with a demoisturizing composition according to claim 15.
Claim 23
Dependent Claim
137 words
A demoisturizing composition for the displacement of liquid water, comprising trichloro-1,1,2-trifluoro-1,2,2, ethane and a sufficient amount of a surface active agent corresponding to the formula: ##STR40## wherein said surface-active composition is prepared by mixing the following compounds: ##STR41## (R"O).sub.p (HO).sub.2-p PO.sub.2 H, and (2) C.sub.6 F.sub.13 C.sub.2 H.sub.4 SO.sub.2 NHC.sub.3 H.sub.6 (CH.sub.3).sub.2 ( 3) wherein ##STR42## is a didodecyl dimethyl ammonium cation, a dioctadecyl dimethyl ammonium cation, or mixtures of homologues principally containing either of those cations; and (R"O) p (HO) 2-p PO 2 H is a mixture of monooctyl or dioctyl phosphoric acids, with the proportion of mono to di acid ranging from about 40:60 to 60:40, and wherein C 6 F 13 C 2 H 4 SO 2 NHC 3 H 6 (CH 3 ) 2 is at least partially present as a soluble hydrochloride.
Claim 24
Dependent Claim
137 words
A demoisturizing composition for the displacement of liquid water, comprising trichloro-1,1,2-trifluoro-1,2,2, ethane and a sufficient amount of a surface active agent corresponding to the formula: ##STR40## wherein said surface-active composition is prepared by mixing the following compounds: ##STR41## (R"O).sub.p (HO).sub.2-p PO.sub.2 H, and (2) C.sub.6 F.sub.13 C.sub.2 H.sub.4 SO.sub.2 NHC.sub.3 H.sub.6 (CH.sub.3).sub.2 ( 3) wherein ##STR42## is a didodecyl dimethyl ammonium cation, a dioctadecyl dimethyl ammonium cation, or mixtures of homologues principally containing either of those cations; and (R"O) p (HO) 2-p PO 2 H is a mixture of monooctyl or dioctyl phosphoric acids, with the proportion of mono to di acid ranging from about 40:60 to 60:40, and wherein C 6 F 13 C 2 H 4 SO 2 NHC 3 H 6 (CH 3 ) 2 is at least partially present as a soluble hydrochloride.
Claim 25
Dependent Claim
16 words
The process of removing water from a surface with a demoisturizing composition according to claim 21.
Claim 26
Dependent Claim
211 words
A demoisturizing composition for the displacement of liquid water comprising a chlorofluorocarbon having at least two carbon atoms that is liquid at room temperature, and a sufficient amount of a surface-active agent corresponding to the formula: ##STR43## in which: R is an alkyl group containing 6 to 18 carbon atoms; R' is an alkyl group containing 1 to 2 carbon atoms; and R" is an alkyl group containing 1 to 18 carbon atoms; and p is a value ranging between 1 and 2; wherein said surface-active composition is prepared by mixing the following compounds: ##STR44## wherein ##STR45## is a didodecyl dimethyl ammonium cation, a dioctadecyl dimethyl ammonium cation, or mixture of homologues principally containing either of those cations; (R") p (HO) 2-p PO 2 H is a mixture of monooctyl and dioctyl phosphoric acids; R f represents a straight or branched perfluorinated alkyl chain of formula C q f 2q+1 in which q is a whole number ranging between 2 and 20 and where x is a divalent bond group which can be partially halogenated; and R 1 and R 2 represent a hydrogen atom, an alkyl radical, or a hydroxy alkyl radical containing less than 6 carbon atoms, and wherein ##STR46## is at least partially present as a soluble hydrochloride.
Claim 27
Dependent Claim
211 words
A demoisturizing composition for the displacement of liquid water comprising a chlorofluorocarbon having at least two carbon atoms that is liquid at room temperature, and a sufficient amount of a surface-active agent corresponding to the formula: ##STR43## in which: R is an alkyl group containing 6 to 18 carbon atoms; R' is an alkyl group containing 1 to 2 carbon atoms; and R" is an alkyl group containing 1 to 18 carbon atoms; and p is a value ranging between 1 and 2; wherein said surface-active composition is prepared by mixing the following compounds: ##STR44## wherein ##STR45## is a didodecyl dimethyl ammonium cation, a dioctadecyl dimethyl ammonium cation, or mixture of homologues principally containing either of those cations; (R") p (HO) 2-p PO 2 H is a mixture of monooctyl and dioctyl phosphoric acids; R f represents a straight or branched perfluorinated alkyl chain of formula C q f 2q+1 in which q is a whole number ranging between 2 and 20 and where x is a divalent bond group which can be partially halogenated; and R 1 and R 2 represent a hydrogen atom, an alkyl radical, or a hydroxy alkyl radical containing less than 6 carbon atoms, and wherein ##STR46## is at least partially present as a soluble hydrochloride.
Claim 28
Dependent Claim
16 words
The process of removing water for a surface with a demoisturizing composition according to claim 23.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |