Patent US4391718A successfully refreshed from Google Patents.
US4391718A
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Sulphonated mono-hydric diaryl phenol formaldehyde condensates, their preparation, their use as dispersing agents and formulations containing them
Assignee: Bayer AG
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Filing: 1981-08-14
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Granted: 1983-07-05
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Expires: 2001-08-14
Abstract
Abstract Reaction products which are prepared by sulphonation or sulphomethylation and formaldehyde condensation of compounds of the formula ##STR1## wherein R 1 represents C 1-4 -alkyl, and, if appropriate, subsequent conversion of the resulting sulphonic acids into their salts are used as dispersing agents.
Inventors
- 👤 Gunther Reitz
- 👤 Karlhans Jakobs
- 👤 Gunther Boehmke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:39
CPC Classifications
C; C07; C07C; C07C309/00; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/18; C08G8/28; C08G8/36; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C09B67/0085; C09B67/0086; C09K; C09K23/00; C09K23/12; D; D06; D06P; D06P1/00; D06P1/44; D06P1/52; D06P1/56; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A dispersing agent comprising (a) an addition product of an aliphatic, araliphatic or alkylaromatic alcohol, carboxylic acid or carboxylic acid amide with 12 to 22 C atoms and 3-8 mols of ethylene oxide, (b) an addition product of an aliphatic, araliphatic or alkylaromatic alcohol, carboxylic acid or carboxylic acid amide with 12 to 22 C atoms and 9 or more mols of ethylene oxide, and (c) a reaction product prepared by sulphonation or sulphomethylation and formaldehyde condensation of a compound of the formula ##STR5## wherein R 1 represents C 1-4 -alkyl, and, optionally, subsequent conversion of the resulting sulphonic acid into its salt.
Claim 2
Dependent Claim
103 words
A dispersing agent comprising (a) an addition product of an aliphatic, araliphatic or alkylaromatic alcohol, carboxylic acid or carboxylic acid amide with 12 to 22 C atoms and 3-8 mols of ethylene oxide, (b) an addition product of an aliphatic, araliphatic or alkylaromatic alcohol, carboxylic acid or carboxylic acid amide with 12 to 22 C atoms and 9 or more mols of ethylene oxide, and (c) a reaction product prepared by sulphonation or sulphomethylation and formaldehyde condensation of a compound of the formula ##STR5## wherein R 1 represents C 1-4 -alkyl, and, optionally, subsequent conversion of the resulting sulphonic acid into its salt.
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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) | 1986-07-04 | 1987-01-03 | 1987-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-04 | 1991-01-03 | 1991-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-04 | 1995-01-03 | 1995-07-05 | $7700.00 | Window Closed / Lapsed |