US4069220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of phenolic complexes of hexamethylenetetramine
Assignee: SLOSS INDUSTRIES Corp A CORP OF
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Filing: 1976-09-21
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Granted: 1978-01-17
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Expires: 1996-09-21
Abstract
Abstract A process has been developed for producing complexes of phenol or phenolic compounds and hexamethylenetetramine by mixing the ingredients with only enough water, or other suitable solvent, to promote the reaction. Heat liberated by the reaction is controlled by cooling the mixing chamber, and drying is accomplished by removing the small amount of solvent in conventional type dryers.
Inventors
- 👤 Henry Philip Orem
- 👤 David R. Hart
- 👤 Jerry E. Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:06
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/12; C07D487/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
A method for preparing a complex of a phenolic compound selected from the group consisting of phenol, resorcinol, dihydroydiphenyl sulfone, B-naphthol, p-cresol, p-phenylphenol, m-methoxyphenol, 3,5-xylenol, o-cresol, o-chlorophenol, o-phenylphenol and 2,4-dichlorophenol comprising: mixing the phenolic compound and hexamethylenetetramine and a suitable solvent in which mixture the amount of solvent is insufficient to dissolve all of the hexamethylenetetramine and all of the phenolic compound simultaneously, and drying the mixture at a temperature less than that which would cause decomposition of the complex.
Claim 2
Independent Claim
80 words
A method for preparing a complex of a phenolic compound selected from the group consisting of phenol, resorcinol, dihydroydiphenyl sulfone, B-naphthol, p-cresol, p-phenylphenol, m-methoxyphenol, 3,5-xylenol, o-cresol, o-chlorophenol, o-phenylphenol and 2,4-dichlorophenol comprising: mixing the phenolic compound and hexamethylenetetramine and a suitable solvent in which mixture the amount of solvent is insufficient to dissolve all of the hexamethylenetetramine and all of the phenolic compound simultaneously, and drying the mixture at a temperature less than that which would cause decomposition of the complex.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein the amount of solvent is less than about 30% by weight of the mixture.
Claim 4
Dependent Claim
10 words
The method of claim 1 wherein the solvent is water.
Claim 5
Dependent Claim
10 words
The method of claim 1 wherein the solvent is non-aqueous.
Claim 6
Dependent Claim
11 words
The method of claim 1 wherein the solvent is iso-propyl alcohol.
Claim 7
Dependent Claim
12 words
The method of claim 1 wherein the solvent is methyl ethyl ketone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |