US5424445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkoxylation products
Assignee: BASF SE
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Filing: 1993-07-29
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Granted: 1995-06-13
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Expires: 2013-07-29
Abstract
Abstract Alkoxylation products which are suitable as dispersants and are of the general formula I ##STR1## where A is oxygen or --CO--O-- when x and y are each 1 or is nitrogen when x+y=3, B is ethylidene or 1,2-propylidene, Z is one of the groups ##STR2## D.sup.⊖ is formate, acetate, propionate or hydroxide, E.sup.⊖ is carboxylate or sulfonate, M is a bridge group for completion of a pyrrolidone, succinimide or maleimide ring to give a group ##STR3## n is from 1 to 50, q is from 1 to 4, x and y are each 1 or 2, with the proviso that x+y≦3, R 1 is C 8 -C 30 -alkyl or, when A is oxygen, is C 4 -C 12 -alkyl-substituted phenyl, R 2 , R 3 and R 4 are each hydrogen, methyl or ethyl and R 5 is hydrogen or methyl, a process for their preparation, their use for dispersing finely divided solids in flowable media, and formulations containing the alkoxylation products.
Inventors
- 👤 Johan H. Hendrick ter Maat
- 👤 Marion Meyer
- 👤 Knut Oppenlaender
- 👤 Michael Zirnstein
- 👤 Walter Denzinger
- 👤 Lothar Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:35
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/273; C07C; C07C217/00; C07C217/02; C07C217/04; C07C217/06; C07C217/08; C07C229/00; C07C229/02; C07C229/04; C07C229/06; C07C229/10; C07C229/12; C07C229/22; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/404; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/333; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; C09; C09K; C09K23/00; C09K23/42; C09K23/46; C08J2471/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
A dispersant composition comprising 0.1-20% by weight of a dispersant of the formula I ##STR19## where A is oxygen or --CO--O-- when x and y are each 1 or is nitrogen when x+y=3, B is ethylene or 1,2-propylene, Z is one of the groups ##STR20## D.sup.⊖ is formate, acetate, propionate or hydroxide, E.sup.⊖ is carboxylate or sulfonate, M is a bridge group for completion of a pyrrolidone, succinimide or maleimide ring to give a group ##STR21## n is from 1 to 50, q is from 1 to 4, x and y are each 1 or 2, with the proviso that x+y≦3, R 1 is C 8 -C 30 -alkyl or, when A is oxygen, is C 4 -C 12 -alkyl-substituted phenyl, R 2 , R 3 and R 4 are each hydrogen, methyl or ethyl, and R 5 is hydrogen or methyl;
Claim 2
Dependent Claim
142 words
A dispersant composition comprising 0.1-20% by weight of a dispersant of the formula I ##STR19## where A is oxygen or --CO--O-- when x and y are each 1 or is nitrogen when x+y=3, B is ethylene or 1,2-propylene, Z is one of the groups ##STR20## D.sup.⊖ is formate, acetate, propionate or hydroxide, E.sup.⊖ is carboxylate or sulfonate, M is a bridge group for completion of a pyrrolidone, succinimide or maleimide ring to give a group ##STR21## n is from 1 to 50, q is from 1 to 4, x and y are each 1 or 2, with the proviso that x+y≦3, R 1 is C 8 -C 30 -alkyl or, when A is oxygen, is C 4 -C 12 -alkyl-substituted phenyl, R 2 , R 3 and R 4 are each hydrogen, methyl or ethyl, and R 5 is hydrogen or methyl;
Claim 3
Dependent Claim
65 words
2- 99. 8% by weight of solids having a particle size of from 1 to 50 μm, which solids are at least one member selected from the group consisting of oxidic ceramic powders, non-oxidic ceramic powders, oxidic metal powders, non-oxidic metal powders, and organic pigments; and 0.1-80% by weight of a flowable medium which comprises at least one fluid which is liquid at room temperature.
Claim 4
Dependent Claim
65 words
2- 99. 8% by weight of solids having a particle size of from 1 to 50 μm, which solids are at least one member selected from the group consisting of oxidic ceramic powders, non-oxidic ceramic powders, oxidic metal powders, non-oxidic metal powders, and organic pigments; and 0.1-80% by weight of a flowable medium which comprises at least one fluid which is liquid at room temperature.
Claim 5
Dependent Claim
64 words
The dispersant composition of claim 1 wherein in the dispersant compound of formula I, A is oxygen, B is ethylene, R 1 is C 16 -alkyl, Z is ##STR22## M, is a bridge group for completion of a maleimide ring n is 8, x is 1, and y is 1; the flowable medium is n-octane; and the solid is Al 2 O 3 .
Claim 6
Dependent Claim
49 words
A process for dispersing finely divided solids in a flowable medium, which comprises mixing the components as defined in claim 10 in the following proportions: a) 20-99.8% by weight of at least one solid b) 1-80% by weight of the flowable medium c) 0.1 to 20% of the dispersant.
Claim 7
Dependent Claim
37 words
A process for dispersing finely divided solids in a flowable medium, which comprises: mixing 20-99.9% by weight of Al 2 O 3 with 1-80% by weight n-octane and 0.1-20% by weight of the dispersant of claim 2.
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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) | 1998-06-12 | 1998-12-12 | 1999-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-12 | 2002-12-12 | 2003-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-12 | 2006-12-12 | 2007-06-13 | $7700.00 | Window Closed / Lapsed |