US4245083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic formaldehyde-salicylic acid condensation products
Assignee: Bayer AG
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Filing: 1978-09-13
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Granted: 1981-01-13
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Expires: 1998-09-13
Abstract
Abstract Condensation products which are obtained by reaction of aromatic hydroxycarboxylic acids with formaldehyde in a first stage and by a subsequent condensation reaction of the products with phenol and/or phenol derivatives in the molar ratio 1:(0.8-21):(0.6-20) are suitable as fixing agents for basic dyestuffs in paper printing.
Inventors
- 👤 Gunther Reitz
- 👤 Gunther Boehmke
- 👤 Artur Haus
- 👤 Martin Meister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:00
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C09D11/103; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
110 words
An alcohol-soluble condensation product of salicylic acid, formaldehyde and at least one phenolic material selected from the group consisting of phenol, cresol, bisphenol A, a 1:0.5-0.8 molar ratio condensation product of phenol and formaldehyde and a 1:0.5-0.8 molar ratio condensation product of cresol and formaldehyde, produced by reacting salicylic acid with formaldehyde in the presence of an acid catalyst in a first stage at a temperature from 100°-130° C. and then reacting the product under acidic condition with the phenolic material at 80°-140° C., the molar ratio of salicylic acid:formaldehyde:phenolic material being 1:1.2-10:1-10 and the molar ratio of the sum of salicylic acid plus phenol, cresol and bisphenol-A:formaldehyde being 1:0.6-0.9.
Claim 2
Dependent Claim
110 words
An alcohol-soluble condensation product of salicylic acid, formaldehyde and at least one phenolic material selected from the group consisting of phenol, cresol, bisphenol A, a 1:0.5-0.8 molar ratio condensation product of phenol and formaldehyde and a 1:0.5-0.8 molar ratio condensation product of cresol and formaldehyde, produced by reacting salicylic acid with formaldehyde in the presence of an acid catalyst in a first stage at a temperature from 100°-130° C. and then reacting the product under acidic condition with the phenolic material at 80°-140° C., the molar ratio of salicylic acid:formaldehyde:phenolic material being 1:1.2-10:1-10 and the molar ratio of the sum of salicylic acid plus phenol, cresol and bisphenol-A:formaldehyde being 1:0.6-0.9.
Claim 3
Dependent Claim
15 words
A condensation product according to claim 1, in which the acid catalyst in sulphuric acid.
Claim 4
Dependent Claim
115 words
A process for the preparation of an alcohol-soluble condensation product of salicylic acid, formaldehyde and at least one phenolic material selected from the group consisting of phenol, cresol, bisphenol A, a 1:0.5-0.8 molar ratio condensation product of phenol and formaldehyde and a 1:05-0.8 molar ratio condensation product of cresol and formaldehyde, comprising reacting salicylic acid with formaldehyde in the presence of an acid catalyst in a first stage at a temperature from 100°-130° C. and then reacting the product under acidic conditions with the phenolic material at 80°-140° C., the molar ratio of salicylic acid:formaldehyde:phenolic material being 1:0.8-21:0.6-20 and the molar ratio of the sum of salicylic acid plus phenol, cresol and bisphenol-A:formaldehyde being 1:0.6-0.9.
Claim 5
Dependent Claim
115 words
A process for the preparation of an alcohol-soluble condensation product of salicylic acid, formaldehyde and at least one phenolic material selected from the group consisting of phenol, cresol, bisphenol A, a 1:0.5-0.8 molar ratio condensation product of phenol and formaldehyde and a 1:05-0.8 molar ratio condensation product of cresol and formaldehyde, comprising reacting salicylic acid with formaldehyde in the presence of an acid catalyst in a first stage at a temperature from 100°-130° C. and then reacting the product under acidic conditions with the phenolic material at 80°-140° C., the molar ratio of salicylic acid:formaldehyde:phenolic material being 1:0.8-21:0.6-20 and the molar ratio of the sum of salicylic acid plus phenol, cresol and bisphenol-A:formaldehyde being 1:0.6-0.9.
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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) | 1984-01-13 | 1984-07-14 | 1985-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-13 | 1988-07-14 | 1989-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-13 | 1992-07-14 | 1993-01-13 | $7700.00 | Window Closed / Lapsed |