GB573116A - Improvements relating to the preparation of gel-like monohydric phenol-formaldehyde condensation products - Google Patents
Improvements relating to the preparation of gel-like monohydric phenol-formaldehyde condensation productsInfo
- Publication number
- GB573116A GB573116A GB15340/42A GB1534042A GB573116A GB 573116 A GB573116 A GB 573116A GB 15340/42 A GB15340/42 A GB 15340/42A GB 1534042 A GB1534042 A GB 1534042A GB 573116 A GB573116 A GB 573116A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gel
- phenol
- formaldehyde
- alkali
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/08—Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/16—Organic material
- B01J39/18—Macromolecular compounds
- B01J39/19—Macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Gel-like monohydric phenol-formaldehyde resins having ion-exchange properties are obtained by heating an alkali salt of a monohydric phenol with a molar excess of formaldehyde in the presence of an alkali catalyst until a gel-like mass is obtained and then drying the gel. Molar proportions of at least 1.5 and preferably 2 or 3 of formaldehyde to one of the phenol are used. The phenol salt is prepared by adding sufficient alkali to the phenol to form the salt and leave excess of alkali to act as catalyst. 40 parts sodium hydroxide dissolved in 200 parts water are mixed with 96 parts of phenol and 600 parts of a 37 per cent solution of formaldehyde are added; the mixture was heated to 100-110 DEG C. for about 3 hours when gelation occurred, the gel being then dried for 3 hours at 100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB15340/42A GB573116A (en) | 1942-10-31 | 1942-10-31 | Improvements relating to the preparation of gel-like monohydric phenol-formaldehyde condensation products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB15340/42A GB573116A (en) | 1942-10-31 | 1942-10-31 | Improvements relating to the preparation of gel-like monohydric phenol-formaldehyde condensation products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB573116A true GB573116A (en) | 1945-11-07 |
Family
ID=10057370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15340/42A Expired GB573116A (en) | 1942-10-31 | 1942-10-31 | Improvements relating to the preparation of gel-like monohydric phenol-formaldehyde condensation products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB573116A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6299892B1 (en) * | 1986-02-03 | 2001-10-09 | Robert A. Schmitz | Composition of matter having bioactive properties |
-
1942
- 1942-10-31 GB GB15340/42A patent/GB573116A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6299892B1 (en) * | 1986-02-03 | 2001-10-09 | Robert A. Schmitz | Composition of matter having bioactive properties |
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