GB521799A - Improvements in and relating to the production of phenol-aldehyde synthetic resins - Google Patents
Improvements in and relating to the production of phenol-aldehyde synthetic resinsInfo
- Publication number
- GB521799A GB521799A GB34099/38A GB3409938A GB521799A GB 521799 A GB521799 A GB 521799A GB 34099/38 A GB34099/38 A GB 34099/38A GB 3409938 A GB3409938 A GB 3409938A GB 521799 A GB521799 A GB 521799A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydroxide
- ammonium hydroxide
- phenol
- ammonium
- tetramethyl
- 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
- C08G8/04—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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fireproofing Substances (AREA)
- Paper (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
521,799. Phenol-aldehyde condensation products; quarternary compounds. BAKELITE, Ltd. Nov. 23, 1938, No. 34099. Convention date, Nov. 27, 1937. [Class 2 (iii)] Phenols are condensed with formaldehyde or a solid polymer thereof in the presence of quarternary bases or phenolic salts thereof. Suitable bases include ammonium, pyridinium, sulphonium, phosphonium, arsonium and stibonium bases such as tetramethyl ammonium hydroxide, tetraethyl ammonium hydroxide, trimethylbenzyl ammonium hydroxide, dicyclohexyldimethyl ammonium hydroxide, dimethylcyclohexylbenzyl ammonium hydroxide, trimethylcyclohexyl ammonium hydroxide, dimethylphenylbenzyl ammonium hydroxide, methyl pyridinium hydroxide, diethylmethyl sulphonium hydroxide, tetramethylphosphonium hydroxide and tetramethyl arsonium hydroxide. The resinous products may be cast and heat-hardened, may be moulded with or without fillers such as wood flour, asbestos or cotton flock, or may be used as ingredients for varnishes, paper sizes. Liquid compositions may be used for impregnation of bases such as paper, textiles or wood veneer and as binders in the manufacture of abrasive articles. In examples : (1) phenol or a mixture of m-cresol and p-cresol is condensed with aqueous formaldehyde in the presence of aqueous tetramethyl ammonium hydroxide, trimethylbenzyl ammonium hydroxide; dicyclohexyldimethyl ammonium hydroxide, diethylmethyl sulphonium hydroxide, tetramethylphosphonium hydroxide, methyl pyridinium hydroxide, tetramethyl arsonium hydroxide or trimethylbenzylammonium phenate and the partially dehydrated product acidified with an aqueous solution of tartaric, citric, or lactic acid and fully dehydrated and, if desired, after blending with glycerine, cast ; (2) a solution of an aqueous solution of trimethylbenzyl ammonium hydroxide in phenol is warmed with paraformaldehyde, blended with phenol, mixed with abrasive grains and with a heat-hardenable phenol-formaldehyde resin and moulded. Trimethylbenzyl ammonium phenate is prepared by reacting benzyl chloride with aqueous trimethylamine and reacting the product with phenol in the presence of sodium hydroxide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US521799XA | 1937-11-27 | 1937-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB521799A true GB521799A (en) | 1940-05-31 |
Family
ID=21975963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34099/38A Expired GB521799A (en) | 1937-11-27 | 1938-11-23 | Improvements in and relating to the production of phenol-aldehyde synthetic resins |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB521799A (en) |
-
1938
- 1938-11-23 GB GB34099/38A patent/GB521799A/en not_active Expired
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