Patent US4034618A successfully refreshed from Google Patents.
US4261925A
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Surfactants
Assignee: Dow Chemical Co
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Filing: 1978-04-05
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Granted: 1981-04-14
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Expires: 1998-04-05
Abstract
Abstract Surfactants having an HLB of from about 12 to about 20, preferably 14 to about 20, are disclosed which correspond to formulas I and II: ##STR1## wherein: R 1 is a nonpolymerizable hydrocarbyl or inertly-substituted hydrocarbyl group of at least 8 carbon atoms; R 2 is hydrogen or alkyl; X is ##STR2## Y is a terminal inorganic or organic group; and n is at least 2.
Inventors
- 👤 Donald A. Tomalia
- 👤 James D. Huffines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:59
CPC Classifications
C; C07; C07C; C07C311/00; C07C311/01; C07C311/02; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05; Y10S516/07
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
73 words
A surfactant having a hydrophilic-lypophilic-balance (HLB) of from about 12 to about 20 and corresponding to formula I: ##STR6## wherein: R 1 is a nonpolymerizable hydrocarbyl or inertly-substituted hydrocarbyl group of at least 8 carbon atoms; R 2 is hydrogen or alkyl of from 1 to about 18 carbon atoms; X is ##STR7## Y is chloro, bromo, or iodo; and n is at least 2 and is varied to achieve the desired HLB.
Claim 2
Dependent Claim
73 words
A surfactant having a hydrophilic-lypophilic-balance (HLB) of from about 12 to about 20 and corresponding to formula I: ##STR6## wherein: R 1 is a nonpolymerizable hydrocarbyl or inertly-substituted hydrocarbyl group of at least 8 carbon atoms; R 2 is hydrogen or alkyl of from 1 to about 18 carbon atoms; X is ##STR7## Y is chloro, bromo, or iodo; and n is at least 2 and is varied to achieve the desired HLB.
Claim 3
Dependent Claim
74 words
A surfactant having a hydrophilic-lypophilic-balance (HLB) of from about 12 to about 20 and corresponding to formula I: ##STR8## wherein: R 1 is a nonpolymerizable hydrocarbyl or inertly-substituted hydrocarbyl group of at least 8 carbon atoms; R 2 is hydrogen or alkyl of from 1 to about 18 carbon atoms; X is ##STR9## Y is chloro, bromo, iodo or hydroxy; and n is at least 2 and is varied to achieve the desired HLB.
Claim 4
Dependent Claim
74 words
A surfactant having a hydrophilic-lypophilic-balance (HLB) of from about 12 to about 20 and corresponding to formula I: ##STR8## wherein: R 1 is a nonpolymerizable hydrocarbyl or inertly-substituted hydrocarbyl group of at least 8 carbon atoms; R 2 is hydrogen or alkyl of from 1 to about 18 carbon atoms; X is ##STR9## Y is chloro, bromo, iodo or hydroxy; and n is at least 2 and is varied to achieve the desired HLB.
Claim 5
Dependent Claim
28 words
The compound defined by formula I in claim 2 wherein R 1 is dodecylphenyl; R 2 is ethyl; Y is chloro; and n is from 3 to 10.
Claim 6
Dependent Claim
43 words
The compound defined by formula I in claim 2 wherein R 1 is polyisobutylene having an average molecular weight of from about 225 to about 2000; R 2 is ethyl; X is ##STR10## Y is chloro; and n is from 3 to 10.
Claim 7
Dependent Claim
71 words
A surfactant having a hydrophilic-lypophilic-balance (HLB) of from about 12 to about 20 and corresponding to formula II: ##STR11## wherein: R 1 is a nonpolymerizable hydrocarbyl or inertly-substituted hydrocarbyl group of at least 8 carbon atoms; R 2 is hydrogen or alkyl of from 1 to about 18 carbon atoms; Y is chloro, bromo, iodo or hydroxy; and n is at least 2 and is varied to achieve the desired HLB.
Claim 8
Dependent Claim
71 words
A surfactant having a hydrophilic-lypophilic-balance (HLB) of from about 12 to about 20 and corresponding to formula II: ##STR11## wherein: R 1 is a nonpolymerizable hydrocarbyl or inertly-substituted hydrocarbyl group of at least 8 carbon atoms; R 2 is hydrogen or alkyl of from 1 to about 18 carbon atoms; Y is chloro, bromo, iodo or hydroxy; and n is at least 2 and is varied to achieve the desired HLB.
Claim 9
Dependent Claim
30 words
The compound defined by formula II in clalim 5 wherein R 1 is dodecylbenzyl; R 2 is ethyl; Y is chloro or bromo; and n is from 4 to 10.
Claim 10
Dependent Claim
30 words
The compound defined by formula II in clalim 5 wherein R 1 is dodecylbenzyl; R 2 is ethyl; Y is chloro or bromo; and n is from 4 to 10.
Claim 11
Dependent Claim
13 words
The surfactant as defined by claim 5, wherein Y is chloro or bromo.
Claim 12
Dependent Claim
24 words
The compound defined by claim 1, 2 or 5 wherein R 1 is a hydrocarbyl group having from 8 to about 100 carbon atoms.
Claim 13
Dependent Claim
23 words
The compound defined by claim 8 wherein R 1 is an alkylbenzyl or alkylphenyl group of from 8 to about 100 carbon atoms.
Claim 14
Dependent Claim
24 words
The compound defined by claim 1, 2 or 5 wherein R 2 is hydrogen or lower alkyl of from 1 to 4 carbon atoms.
Claim 15
Dependent Claim
14 words
The compound defined by claim 10 wherein R 2 is hydrogen, methyl or ethyl.
Claim 16
Dependent Claim
17 words
The compound defined by claim 1, 2 or 5 wherein n is from 2 to about 40.
Claim 17
Dependent Claim
19 words
The compound defined by claim 1, 2 or 5 wherein the hydrophilic-lypophilic-balance is from about 14 to about 20.
Claim 18
Dependent Claim
21 words
The compound defined by claim 13 wherein R 1 is a hydrocarbyl group having from 8 to about 20 carbon atoms.
Claim 19
Dependent Claim
23 words
The compound defined by claim 13 wherein R 1 is an alkylbenzyl or alkylphenyl group of from 8 to about 20 carbon atoms.
Claim 20
Dependent Claim
21 words
The compound defined by claim 13 wherein R 2 is hydrogen or lower alkyl of from 1 to 4 carbon atoms.
Claim 21
Dependent Claim
14 words
The compound defined by claim 16 wherein R 2 is hydrogen, methyl or ethyl.
Claim 22
Dependent Claim
14 words
The compound defined by claim 13 wherein n is from 2 to about 40.
References Cited (Backward Citations)
US2340881A
Cited
US2243329A
Cited
US2765325A
Cited
US3676483A
Cited
US3687870A
Cited
US4152342A
Cited
US4120804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-13 | 1984-10-13 | 1985-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-13 | 1988-10-13 | 1989-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-13 | 1992-10-13 | 1993-04-14 | $7700.00 | Window Closed / Lapsed |