GB573430A - Phenol-formaldehyde resins - Google Patents
Phenol-formaldehyde resinsInfo
- Publication number
- GB573430A GB573430A GB257442A GB257442A GB573430A GB 573430 A GB573430 A GB 573430A GB 257442 A GB257442 A GB 257442A GB 257442 A GB257442 A GB 257442A GB 573430 A GB573430 A GB 573430A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenol
- cresol
- parts
- proportion
- tertiary
- 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
- C08G8/04—Condensation polymers of aldehydes or ketones with phenols only of aldehydes
- C08G8/08—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ
- C08G8/24—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with mixtures of two or more phenols which are not covered by only one of the groups C08G8/10 - C08G8/20
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
Phenol-aldehyde resins blendible with drying oils to give varnishes are obtained by condensing a mixture of o-cresol and a lesser proportion of a monohydric phenol having an alkyl or cycloalkyl substituent in the p-position and its other two reactive positions free with a substantially equimolecular proportion of formaldehyde in the presence of a strongly alkaline catalyst. As modifying phenols there are specified: p-cresol, p-tertiary butyl phenol, p-tertiary amyl phenol, p-tertiary octylphenol and p-cyclohexyl phenol, 10 to 30 per cent being used in proportion to the o-cresol. In examples: (1) 210 parts cresol and 90 parts tert. butyl phenol, 210 parts 36.5 per cent formaldehyde and 1.5 parts caustic soda are boiled under reflux for 3 hours. The product is separated into layers and the upper aqueous layer rejected. The oily resole layer is heated in a stream of carbon dioxide to 130 DEG C. for 15 mins. The brittle solid obtained on cooling is soluble in tung oil to give a varnish. Specification 433,539 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB257442A GB573430A (en) | 1942-02-27 | 1942-02-27 | Phenol-formaldehyde resins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB257442A GB573430A (en) | 1942-02-27 | 1942-02-27 | Phenol-formaldehyde resins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB573430A true GB573430A (en) | 1945-11-21 |
Family
ID=9741961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB257442A Expired GB573430A (en) | 1942-02-27 | 1942-02-27 | Phenol-formaldehyde resins |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB573430A (en) |
-
1942
- 1942-02-27 GB GB257442A patent/GB573430A/en not_active Expired
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