Patent US3777761A successfully refreshed from Google Patents.
US4165239A
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Process for dispersing pigments and fillers using carboxylic acid esters of tertiary alkylolamines
Assignee: Henkel AG and Co KGaA
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Filing: 1978-06-19
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Granted: 1979-08-21
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Expires: 1998-06-19
Abstract
Abstract A process for improving the dispersibility of inorganic pigments and fillers which comprises contacting said pigments and fillers with esters of aliphatic carboxylic acids having 4 to 22 carbon atoms with tertiary alkylolamines, and recovering a highly dispersible pigment or filler.
Inventors
- 👤 Heinrich Linden
- 👤 Hans Bornmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:59
CPC Classifications
C; C09; C09D; C09D17/00; C09D17/004; C09D17/007; C09D17/008; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3669; C09C3/00; C09C3/08; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
95 words
In a process for treating titanium dioxide pigments and iron oxide pigments with a dispersing agent in order to improve their dispersibility in organic and aqueous media, the improvement comprising utilizing at least one ester of at least two moles of an aliphatic carboxylic acid having 6 to 18 carbon atoms in the molecule and selected from the group consisting of alkanoic acids, alkenoic acids, hydroxy substituted alkanoic acids and hydroxy substituted alkenoic acids with a mole of a tertiary alkylolamine selected from the group consisting of triethanolamine and an N-methyl-diethanolamine as the dispersing agent.
Claim 2
Dependent Claim
95 words
In a process for treating titanium dioxide pigments and iron oxide pigments with a dispersing agent in order to improve their dispersibility in organic and aqueous media, the improvement comprising utilizing at least one ester of at least two moles of an aliphatic carboxylic acid having 6 to 18 carbon atoms in the molecule and selected from the group consisting of alkanoic acids, alkenoic acids, hydroxy substituted alkanoic acids and hydroxy substituted alkenoic acids with a mole of a tertiary alkylolamine selected from the group consisting of triethanolamine and an N-methyl-diethanolamine as the dispersing agent.
Claim 3
Dependent Claim
11 words
The process of claim 1, wherein the ester is fully esterified.
Claim 4
Dependent Claim
31 words
The process of claim 1, wherein the ester is used in an amount of from 0.05 to 4 percent by weight, relative to the weight of the pigment to be treated.
Claim 5
Dependent Claim
31 words
The process of claim 3, wherein the ester is used in an amount of from 0.1 to 1.0 percent by weight, relative to the weight of the pigment to be treated.
Claim 6
Dependent Claim
14 words
The process of claim 1, wherein the pigment to be treated is titanium dioxide.
Claim 7
Dependent Claim
11 words
The process of claim 1, wherein the ester is partially esterified.
Claim 8
Dependent Claim
41 words
The process of claim 1, wherein the ester is a member selected from the group consisting of triethanolamine tricaproic acid ester, triethanolamine tri-2-ethylhexanoic acid ester, triethanolamine-trisoya oil fatty acid ester, triethanolamine-tri-12-hydroxy stearic acid ester, triethanolamine-di-caproic acid ester, and N-methyl-diethanolamine-di-oleic acid ester.
Claim 9
Dependent Claim
9 words
Iron oxide treated by the process of claim 1.
Claim 10
Dependent Claim
9 words
Titanium dioxide treated by the process of claim 1.
Claim 11
Dependent Claim
10 words
The process of claim 1 wherein tertiary alkylolamine is triethanolamine.
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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) | 1982-08-20 | 1983-02-19 | 1983-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-20 | 1987-02-19 | 1987-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-20 | 1991-02-19 | 1991-08-21 | $7700.00 | Window Closed / Lapsed |