GB964260A - Phenolic resin intermediates and cured products obtained from them - Google Patents
Phenolic resin intermediates and cured products obtained from themInfo
- Publication number
- GB964260A GB964260A GB1496861A GB1496861A GB964260A GB 964260 A GB964260 A GB 964260A GB 1496861 A GB1496861 A GB 1496861A GB 1496861 A GB1496861 A GB 1496861A GB 964260 A GB964260 A GB 964260A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenol
- dimethylol
- cured
- cresol
- intermediates
- 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
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/02—Polycondensates containing more than one epoxy group per molecule
- C08G59/04—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof
- C08G59/06—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols
- C08G59/08—Polycondensates containing more than one epoxy group per molecule of polyhydroxy compounds with epihalohydrins or precursors thereof of polyhydric phenols from phenol-aldehyde condensates
-
- 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)
- Epoxy Resins (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
Resin intermediates or precursors are produced by reacting in aqueous medium, one or more of, (1) 2,4-dimethylol-6-methyl phenol; 2,6-dimethylol-4-methyl phenol; 4,6-dimethylol-2,5-dimethyl phenol; 2,6-dimethylol-3,4-dimethyl phenol; 4,6-dimethylol-2,3-dimethyl phenol; or alkaline, alkaline earth or zinc salts thereof, with, (2) phenol; m-cresol; 1,3,5-xylenol; methylol derivatives of phenol, m-cresol or 1,3,5-xylenol; diphenylol propane or a methylol derivative thereof; dihydroxydiaryl methane; quebracho; mimosa; tanain or cutch. The reaction may be catalysed by acid. A further difunctional phenolic material may be included in the reaction mixture. The intermediates may be cured by heat, if desired with the aid of hexamethylene tetramine. The products may be used as binders in a moulding powder or for a moulding sand. The intermediates may be transformed to their glycidyl ethers which may be cured as epoxy resins. In examples, (1) Phenol is reacted with sodium 2,6-dimethylol-4-methyl phenolate in presence of water and sulphuric acid. The product is washed, dried and powdered and can be cured with hexamethylene tetramine. Dissolved with hexamine in alcohol it can be sprayed on to sand in a rotating tumbler to give, after evaporation of alcohol, a moulding sand. (2) Phenol and p-cresol were reacted in presence of water and oxalic acid with 2,6-dimethylol-o-cresol. The resin intermediate so formed may be mixed with wood flour and hexamethylene tetramine to give a moulding powder, or may be reacted with epichlorhydrin and caustic soda to form an epoxy resin which may be cured, e.g. with diethylene triamine or a polyamide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU59884/60A AU243570B2 (en) | 1961-04-21 | Resins from difunctional phenols |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB964260A true GB964260A (en) | 1964-07-22 |
Family
ID=3745091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1496861A Expired GB964260A (en) | 1960-04-29 | 1961-04-25 | Phenolic resin intermediates and cured products obtained from them |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB964260A (en) |
-
1961
- 1961-04-25 GB GB1496861A patent/GB964260A/en not_active Expired
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