US4762946A
Expired / Lapsed
US
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Esters of unsaturated carboxylic acids
Assignee: Henkel AG and Co KGaA
•
Filing: 1986-04-14
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Granted: 1988-08-09
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Expires: 2006-04-14
Abstract
Abstract Polymeric pour point depressants are described which are prepared from new esters of α,β-olefinically unsaturated carboxylic acids of the formula R.sub.1 --CO--[--O--A--CO--]--.sub.n OR wherein R 1 --CO-- is an α,β-olefinically unsaturated carboxylic acid residue containing from 3 to 6 carbon atoms, R is a saturated or unsaturated hydrocarbon radical containing from 10 to 24 carbon atoms, --[--O--A--CO--]-- is a residue of a hydroxycarboxylic acid having from 2 to 6 carbon atoms, A is an aliphatic radical having from 1 to 5 carbon atoms, and n is a number having a value of from 1 to 18.
Inventors
- 👤 Wolfgang Ritter
- 👤 Wolfgang Zoellner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:47
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/195; C10L1/196; C10L1/1963; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; C10L1/198; C10L1/1983; C10L1/22; C10L1/234; C10L1/236; C10L1/2364
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
90 words
An ester of an α,β-olefinically unsaturated carboxylic acid corresponding to the following formula R.sub.1 --CO--[--O--A--CO--]--.sub.n OR (I) wherein R 1 --CO-- is an α,β-olefinically unsaturated carboxylic acid residue containing from 3 to 6 carbon atoms, R is a saturated or unsaturated hydrocarbon radical containing from 10 to 24 carbon atoms, --[--O--A--CO--]-- is a residue or a hydroxycarboxylic acid having from 2 to 6 carbon atoms, A is an aliphatic radical having from 1 to 5 carbon atoms, and n is a number having a value of from 1 to 18.
Claim 2
Dependent Claim
90 words
An ester of an α,β-olefinically unsaturated carboxylic acid corresponding to the following formula R.sub.1 --CO--[--O--A--CO--]--.sub.n OR (I) wherein R 1 --CO-- is an α,β-olefinically unsaturated carboxylic acid residue containing from 3 to 6 carbon atoms, R is a saturated or unsaturated hydrocarbon radical containing from 10 to 24 carbon atoms, --[--O--A--CO--]-- is a residue or a hydroxycarboxylic acid having from 2 to 6 carbon atoms, A is an aliphatic radical having from 1 to 5 carbon atoms, and n is a number having a value of from 1 to 18.
Claim 3
Dependent Claim
37 words
The ester of claim 1, wherein the R 1 --CO-- residue is a residue of a carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, crotonic acid, fumaric acid, maleic acid, and mixtures thereof.
Claim 4
Dependent Claim
22 words
The ester of claim 1, wherein the hydroxycarboxylic acid is selected from the group consisting of monohydroxylated monocarboxylic acids and oligomers thereof.
Claim 5
Dependent Claim
27 words
The ester of claim 3 wherein the hydroxycarboxylic acid is selected from the group consisting of lactic acid, isomers of lactic acid, and oligomers of lactic acid.
Claim 6
Dependent Claim
18 words
The ester of claim 1, wherein n is a number having a value of from 2 to 10.
Claim 7
Dependent Claim
18 words
The ester of claim 5 wherein n is a number having a value of from 2 to 4.
Claim 8
Dependent Claim
27 words
The ester of claim 1, wherein the saturated or unsaturated hydrocarbon radical R is derived from a natural fatty alcohol containing from 10 to 24 carbon atoms.
Claim 9
Dependent Claim
15 words
The ester of claim 7 wherein the fatty alcohol has up to three double bonds.
Claim 10
Dependent Claim
16 words
The ester of claim 7 wherein the fatty alcohol contains from 12 to 18 carbon atoms.
Claim 11
Dependent Claim
12 words
The ester of claim 9 wherein the alcohol is tallow fatty alcohol.
Claim 12
Dependent Claim
21 words
The ester of claim 1, wherein the hydrocarbon radical R is derived from oligomerization products of ethylene containing a terminal OH-group.
Claim 13
Dependent Claim
84 words
The ester of claim 1 wherein the R 1 --CO-- residue is a residue of a carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, crotonic acid, fumaric acid, maleic acid, and mixtures thereof; the hydroxycarboxylic acid is selected from the group consisting of monohydroxylated monocarboxylic acids and oligomers therof; the saturated or unsaturated hydrocarbon radical R is derived from a natural fatty alcohol containing from 10 to 24 carbon atoms; and n is a number of from 2 to 10.
Claim 14
Dependent Claim
15 words
The ester of claim 12 wherein the fatty alcohol has up to three double bonds.
Claim 15
Dependent Claim
16 words
The ester of claim 12 wherein the fatty alcohol contains from 12 to 18 carbon atoms.
Claim 16
Dependent Claim
15 words
The ester of claim 12 wherein n is a number of from 2 to 4.
Claim 17
Dependent Claim
90 words
An adduct of an alcohol and a hydroxycarboxylic acid or a reactive derivative thereof corresponding to the following formula X--[--O--A--CO--]--.sub.n OR (II) wherein R is a saturated or unsaturated hydrocarbon radical containing from 10 to 24 carbon atoms, --[--O--A--CO--]-- is a residue of a hydroxycarboxylic acid having from 2 to 6 carbon atoms, A is a aliphatic radical having from 1 to 5 carbon atoms, X is a hydrogen atom or a radical reactive under esterification conditions, and n is a number having a value of from 2 to 18.
Claim 18
Dependent Claim
90 words
An adduct of an alcohol and a hydroxycarboxylic acid or a reactive derivative thereof corresponding to the following formula X--[--O--A--CO--]--.sub.n OR (II) wherein R is a saturated or unsaturated hydrocarbon radical containing from 10 to 24 carbon atoms, --[--O--A--CO--]-- is a residue of a hydroxycarboxylic acid having from 2 to 6 carbon atoms, A is a aliphatic radical having from 1 to 5 carbon atoms, X is a hydrogen atom or a radical reactive under esterification conditions, and n is a number having a value of from 2 to 18.
Claim 19
Dependent Claim
18 words
The adduct of claim 16 wherein the group --[--O--A--CO--]-- n is an oligomer of a monohydroxylated monocarboxylic acid.
Claim 20
Dependent Claim
14 words
The adduct of claim 17 wherein the oligomer is an oligomer of lactic acid.
Claim 21
Dependent Claim
15 words
The adduct of claim 16 wherein n is a number of from 2 to 10.
Claim 22
Dependent Claim
15 words
The adduct of claim 19 wherein n is a number of from 2 to 4.
Claim 23
Dependent Claim
27 words
The adduct of claim 16 wherein the saturated or unsaturated hydrocarbon radical R is derived from a natural fatty alcohol containing from 10 to 24 carbon atoms.
Claim 24
Dependent Claim
15 words
The adduct of claim 21 wherein the fatty alcohol has up to three double bonds.
Claim 25
Dependent Claim
16 words
The adduct of claim 21 wherein the fatty alcohol contains from 12 to 18 carbon atoms.
Claim 26
Dependent Claim
12 words
The adduct of claim 23 wherein the alcohol is tallow fatty alcohol.
Claim 27
Dependent Claim
21 words
The adduct of claim 16 wherein the hydrocarbon radical R is derived from oligomerization products of ethylene containing a terminal OH-group.
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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) | 1991-08-09 | 1992-02-08 | 1992-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-09 | 1996-02-08 | 1996-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-09 | 2000-02-08 | 2000-08-09 | $7700.00 | Window Closed / Lapsed |