GB773611A - Resol resins - Google Patents
Resol resinsInfo
- Publication number
- GB773611A GB773611A GB2624154A GB2624154A GB773611A GB 773611 A GB773611 A GB 773611A GB 2624154 A GB2624154 A GB 2624154A GB 2624154 A GB2624154 A GB 2624154A GB 773611 A GB773611 A GB 773611A
- Authority
- GB
- United Kingdom
- Prior art keywords
- parts
- phenol
- formaldehyde
- hydroxides
- meta
- 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
- C08G8/10—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with phenol
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
Resol resins are made by condensing a molar excess of phenolic material with formaldehyde in the presence of a strongly basic oxide or hydroxide of a divalent electropositive metal at a pH greater than 7 to produce a non-heat hardenable novolak resin which is then reacted with formaldehyde at a pH above 7, the condensation being stopped before the resol becomes insoluble. The molar ratio of condensed formaldehyde to phenol in the final product exceeds 1 : 1. The phenolic material comprises phenol, meta-cresol, meta-ethyl phenol and mixtures thereof amongst themselves or with other phenolic compounds. Suitable catalysts for the first stage of the process are the oxides and hydroxides of barium, strontium, calcium and magnesium, whilst suitable catalysts for the second stage include the alkali metal hydroxides and carbonates, alkaline earth metal oxides and hydroxides, ammonia and organic bases. In the example, 3000 parts of phenol, 658 parts of formalin (36.35 per cent) and 30 parts of calcium carbonate are refluxed for 30 minutes and water distilled off to a temperature of 160 DEG C. and the excess phenol removed; 252 parts of the resultant novolak are mixed with 277 parts of water and 59.2 parts of 151.6 parts of formalin added and the solution heated to 90 DEG C. The product was suitable for use as a plywood adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2624154A GB773611A (en) | 1954-09-10 | 1954-09-10 | Resol resins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2624154A GB773611A (en) | 1954-09-10 | 1954-09-10 | Resol resins |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB773611A true GB773611A (en) | 1957-05-01 |
Family
ID=10240549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2624154A Expired GB773611A (en) | 1954-09-10 | 1954-09-10 | Resol resins |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB773611A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022942A (en) | 1972-02-17 | 1977-05-10 | Monsanto Company | Process of preparing fibrous sheet from high-ortho phenolic resole resin varnish |
| US4668759A (en) * | 1985-07-31 | 1987-05-26 | Acme Resin Corporation | Phenolic resin binders for foundry and refractory uses |
| CN112585189A (en) * | 2018-08-27 | 2021-03-30 | 日铁化学材料株式会社 | Phosphorus-containing epoxy resin, epoxy resin composition, prepreg, laminate, material for circuit board, and cured product |
-
1954
- 1954-09-10 GB GB2624154A patent/GB773611A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4022942A (en) | 1972-02-17 | 1977-05-10 | Monsanto Company | Process of preparing fibrous sheet from high-ortho phenolic resole resin varnish |
| US4668759A (en) * | 1985-07-31 | 1987-05-26 | Acme Resin Corporation | Phenolic resin binders for foundry and refractory uses |
| US4740535A (en) * | 1985-07-31 | 1988-04-26 | Acme Resin Corporation | Phenolic resin binders for foundry and refractory uses |
| CN112585189A (en) * | 2018-08-27 | 2021-03-30 | 日铁化学材料株式会社 | Phosphorus-containing epoxy resin, epoxy resin composition, prepreg, laminate, material for circuit board, and cured product |
| CN112585189B (en) * | 2018-08-27 | 2023-08-01 | 日铁化学材料株式会社 | Epoxy resin composition, prepreg, laminated board, material for circuit board, cured product, and method for producing phosphorus-containing epoxy resin |
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