GB484118A - Improvements in or relating to phenol-formaldehyde condensation products - Google Patents
Improvements in or relating to phenol-formaldehyde condensation productsInfo
- Publication number
- GB484118A GB484118A GB2982936A GB2982936A GB484118A GB 484118 A GB484118 A GB 484118A GB 2982936 A GB2982936 A GB 2982936A GB 2982936 A GB2982936 A GB 2982936A GB 484118 A GB484118 A GB 484118A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenol
- per cent
- product
- mols
- mol
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
- C08G8/28—Chemically modified polycondensates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
- C08G8/28—Chemically modified polycondensates
- C08G8/32—Chemically modified polycondensates by organic acids or derivatives thereof, e.g. fatty oils
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
A heat-hardenable resin is prepared by heating a phenol with more than two molecular proportions of formaldehyde, adding a basic substance (e.g. an alkali bicarbonate) to prevent precipitation, neutralizing the product with acid, reacting the neutralized product with a partial acetate of a polyhydric alcohol (with or without the addition of up to 10 per cent of boric acid), and dehydrating by distillation. In an example: 1 mol. of phenol is heated with 2 1/2 mols. of 40 per cent formaldehyde solution, and when the temperature reaches 80 DEG C., 0,02 mols. of sodium bicarbonate are added and heating continued at 100 DEG C. The mix is neutralized with lactic acid and one mol. of monoacetin added with or without 10 per cent boric acid (reckoned on the acetin). The product is dehydrated by vacuum distillation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2982936A GB484118A (en) | 1936-11-02 | 1936-11-02 | Improvements in or relating to phenol-formaldehyde condensation products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2982936A GB484118A (en) | 1936-11-02 | 1936-11-02 | Improvements in or relating to phenol-formaldehyde condensation products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB484118A true GB484118A (en) | 1938-05-02 |
Family
ID=10297858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2982936A Expired GB484118A (en) | 1936-11-02 | 1936-11-02 | Improvements in or relating to phenol-formaldehyde condensation products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB484118A (en) |
-
1936
- 1936-11-02 GB GB2982936A patent/GB484118A/en not_active Expired
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