Patent US4438045A successfully refreshed from Google Patents.
US4438045A
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US
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Amphoteric surfactants
Assignee: Texaco Inc
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Filing: 1982-12-15
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Granted: 1984-03-20
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Expires: 2002-12-15
Abstract
Abstract A new composition of matter is revealed. The composition of matter is the condensation product of succinic anhydride, 3-dimethylamino propylamine or 3-dimethyl aminoethanol and a specified glycidyl ether. The composition of matter is useful as an amphoteric surfactant.
Inventors
- 👤 Edward C. Y. Nieh
- 👤 Carter G. Naylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:29
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/88; C11D1/90
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
34 words
A composition of matter of the general formula: ##STR13## wherein R is selected from the group consisting of a linear alkyl, a branched alkyl and an alkylaryl containing from 8 to 20 carbon atoms.
Claim 2
Dependent Claim
34 words
A composition of matter of the general formula: ##STR13## wherein R is selected from the group consisting of a linear alkyl, a branched alkyl and an alkylaryl containing from 8 to 20 carbon atoms.
Claim 3
Dependent Claim
18 words
The composition of matter of claim 1 wherein R is an alkylaryl of 14 to 20 carbon atoms.
Claim 4
Dependent Claim
11 words
The composition of matter of claim 1 wherein R is nonylphenyl.
Claim 5
Dependent Claim
11 words
The composition of matter of claim 1 wherein R is dodecylphenyl.
Claim 6
Dependent Claim
48 words
An aqueous solution comprising water and from 0.005 wt.% to 20 wt% of a composition of matter characterized by the general formula: ##STR14## wherein R is selected from a group consisting of a linear alkyl, a branched alkyl and an alkylaryl containing from 8 to 20 carbon atoms.
Claim 7
Dependent Claim
48 words
An aqueous solution comprising water and from 0.005 wt.% to 20 wt% of a composition of matter characterized by the general formula: ##STR14## wherein R is selected from a group consisting of a linear alkyl, a branched alkyl and an alkylaryl containing from 8 to 20 carbon atoms.
Claim 8
Dependent Claim
16 words
The solution of claim 5 wherein R is an alkylaryl of 14 to 20 carbon atoms.
Claim 9
Dependent Claim
9 words
The solution of claim 5 wherein R is nonylphenyl.
Claim 10
Dependent Claim
9 words
The solution of claim 5 wherein R is dodecylphenyl.
Claim 11
Dependent Claim
9 words
The solution of claim 5 which additionally comprises brine.
Claim 12
Dependent Claim
18 words
The solution of claim 5 which comprises from 0.005 wt% to 0.5 wt% of the composition of matter.
Claim 13
Dependent Claim
18 words
The solution of claim 5 which comprises from 1 wt% to 15 wt% of the composition of matter.
Claim 14
Dependent Claim
33 words
The composition of matter of the general formula: ##STR15## wherein R is selected from the group consisting of a linear alkyl, a branched alkyl and an alkylaryl of 8 to 20 carbon atoms.
Claim 15
Dependent Claim
33 words
The composition of matter of the general formula: ##STR15## wherein R is selected from the group consisting of a linear alkyl, a branched alkyl and an alkylaryl of 8 to 20 carbon atoms.
Claim 16
Dependent Claim
18 words
The composition of matter of claim 12 wherein R is an alkylaryl of 14 to 20 carbon atoms.
Claim 17
Dependent Claim
11 words
The composition of matter of claim 12 wherein R is nonylphenyl.
Claim 18
Dependent Claim
11 words
The composition of matter of claim 12 wherein R is dodecylphenyl.
Claim 19
Dependent Claim
48 words
An aqueous solution comprising water and from 0.005 wt% to 20 wt% of a composition of matter characterized by the general formula: ##STR16## wherein R is selected from a group consisting of a linear alkyl, a branched alkyl and an alkylaryl containing from 8 to 20 carbon atoms.
Claim 20
Dependent Claim
48 words
An aqueous solution comprising water and from 0.005 wt% to 20 wt% of a composition of matter characterized by the general formula: ##STR16## wherein R is selected from a group consisting of a linear alkyl, a branched alkyl and an alkylaryl containing from 8 to 20 carbon atoms.
Claim 21
Dependent Claim
16 words
The solution of claim 16 wherein R is an alkylaryl of 14 to 20 carbon atoms.
Claim 22
Dependent Claim
9 words
The solution of claim 16 wherein R is nonylphenyl.
Claim 23
Dependent Claim
9 words
The solution of claim 16 wherein R is dodecylphenyl.
Claim 24
Dependent Claim
9 words
The solution of claim 16 which additionally comprises brine.
Claim 25
Dependent Claim
18 words
The solution of claim 16 which comprises from 0.005 wt% to 0.5 wt% of the composition of matter.
Claim 26
Dependent Claim
18 words
The solution of claim 16 which comprises from 1 wt% to 15 wt% of the composition of matter.
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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) | 1987-03-20 | 1987-09-19 | 1988-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-20 | 1991-09-19 | 1992-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-20 | 1995-09-19 | 1996-03-20 | $7700.00 | Window Closed / Lapsed |