GB590321A - Improved process of preparing phenolic resin compositions and product thereof - Google Patents
Improved process of preparing phenolic resin compositions and product thereofInfo
- Publication number
- GB590321A GB590321A GB11175/43A GB1117543A GB590321A GB 590321 A GB590321 A GB 590321A GB 11175/43 A GB11175/43 A GB 11175/43A GB 1117543 A GB1117543 A GB 1117543A GB 590321 A GB590321 A GB 590321A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenol
- resorcinol
- parts
- product
- dihydric
- 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)
- Adhesives Or Adhesive Processes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Glue compositions are prepared by heating a monohydric phenol with not more than 25. mols. of formaldehyde in aqueous alkaline solution having a pH of 9 or higher until a low polymer is formed which is still soluble in the reaction mixture, adding a dihydric phenol together with sufficient alkaline material capable of forming a salt with a phenol to keep the reaction product in solution, to dissolve the dihydric phenol, and to maintain a pH of 9 or higher, and further condensing the resulting product, but only to such an extent as to obtain a product that is completely miscible with water. Dihydric phenols specified are resorcinol, catechol, hydroquinone. The resorcinol may be mixed with the monohydric phenol at the beginning of the reaction in the proportion of not more than 4 parts by weight resorcinol to 10 parts monohydric phenol. The solution should be cooled below 75 DEG C., preferably 40-75 DEG C., before adding the dihydric phenol. The proportion of dihydric phenol is preferably 2.5-10 parts for each 10 parts of monohydric phenol. Paraformaldehyde and hexamethylene tetramine may be added just before curing, and the proportion of formaldehyde used initially may be 1.5-2.5 mols. per mol. phenol. Alkalies which may be used are caustic soda or potash or lime. Examples describe the reaction according to the foregoing of phenol, resorcinol, and caustic soda. The resins may be mixed with fillers such as wood flour and walnut-shell flour, and the glues may be spray-dried and reconstituted with water. Curing takes place at 120-240 DEG F. The glues are used in the manufacture of plywood and are bonding agents for paper, rockwool, cork, sand and compregnated wood, i.e. board prepared by laminating phenolic resin impregnated veneers.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US590321XA | 1942-08-21 | 1942-08-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB590321A true GB590321A (en) | 1947-07-15 |
Family
ID=22020379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11175/43A Expired GB590321A (en) | 1942-08-21 | 1943-07-09 | Improved process of preparing phenolic resin compositions and product thereof |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB590321A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2579453A (en) * | 1947-01-31 | 1951-12-25 | American Cyanamid Co | Composition for drilling muds |
-
1943
- 1943-07-09 GB GB11175/43A patent/GB590321A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2579453A (en) * | 1947-01-31 | 1951-12-25 | American Cyanamid Co | Composition for drilling muds |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2414415A (en) | Production and utilization of cold setting polyhydric phenolic aldehyde resin adhesives | |
US3929695A (en) | Phenolic resin adhesives containing resorcinol, formaldehyde and an alkali metal carbonate | |
GB579698A (en) | Improvements in or relating to a process for the manufacture of thermo-setting synthetic resins by the polymerisation of alkylene oxide derivatives | |
GB1099187A (en) | A method of making phenol-resorcinol-formaldehyde resins | |
US3905921A (en) | Rapidly-foamable, fast-setting phenolic resin plywood glue | |
ES355091A1 (en) | Low exotherm curing phenol-resorcinolformaldehyde resins employing alkali metal sulfites and calcium compounds as catalysts | |
US2432544A (en) | Resorcinol-aldehyde combined with aromatic amine-aldehyde resin | |
GB576995A (en) | Hardenable compositions containing urea-aldehyde resins | |
US3535199A (en) | Flame-resistant wood-chip panels containing fully hardened urea formaldehyde as flame retardant | |
GB590321A (en) | Improved process of preparing phenolic resin compositions and product thereof | |
GB1340935A (en) | Wood adhesive | |
GB597285A (en) | Process for the preparation of synthetic resin-modified n-alkoxymethyl polyamide compositions | |
GB723884A (en) | Improvements in or relating to synthetic resin adhesives | |
US2490927A (en) | Condensation products of resorcinol and formaldehyde | |
US3096226A (en) | Aqueous composition of phenol-aldehyde condensate and method of bonding materials with same | |
GB650133A (en) | Phenol-modified acetone resins | |
GB688222A (en) | Improvements in or relating to phenol-aldehyde resin adhesives | |
US3704200A (en) | Condensation resins from aldehydes,polynuclear catechol and resorcinol | |
US2789098A (en) | Synthetic resin compositions and process for making same | |
GB636496A (en) | Method of producing a composite synthetic resin and product thereof | |
SU423818A1 (en) | GLUE COMPOSITION | |
GB631109A (en) | Improvements in or relating to method of making an artificial thermosetting resin and the improved resin resulting therefrom | |
GB623271A (en) | Improvements relating to the manufacture of synthetic resinous compositions | |
GB648281A (en) | Improvements in or relating to the production of water-insoluble cation active phenol formaldehyde condensation products | |
GB603835A (en) | Improvements in processes for manufacturing synthetic resin |