GB269973A - Improvements in and relating to the manufacture of resin-like bodies - Google Patents
Improvements in and relating to the manufacture of resin-like bodiesInfo
- Publication number
- GB269973A GB269973A GB236326A GB236326A GB269973A GB 269973 A GB269973 A GB 269973A GB 236326 A GB236326 A GB 236326A GB 236326 A GB236326 A GB 236326A GB 269973 A GB269973 A GB 269973A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alcohol
- reaction
- condensing agent
- hydrocarbon
- resin
- 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
- C08G16/00—Condensation polymers of aldehydes or ketones with monomers not provided for in the groups C08G4/00 - C08G14/00
- C08G16/02—Condensation polymers of aldehydes or ketones with monomers not provided for in the groups C08G4/00 - C08G14/00 of aldehydes
-
- 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
- C08G10/00—Condensation polymers of aldehydes or ketones with aromatic hydrocarbons or halogenated aromatic hydrocarbons only
- C08G10/02—Condensation polymers of aldehydes or ketones with aromatic hydrocarbons or halogenated aromatic hydrocarbons only of aldehydes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compounds Of Unknown Constitution (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
269,973. Griffiths Bros. & Co., London, Ltd., and Britton, R. P. L. Jan. 27, 1926. Polymerization or condensation products of aromatic alcohols; condensation products of formaldehyde and aromatic hydrocarbons.-Resinous bodies soluble in organic solvents are obtained by treating monohydric aromatic side-chain alcohols with condensing agents. The condensing agents, such as sulphuric or phosphoric acid or phosphorus pentoxide, may be used singly or in combination, and are preferably taken in such amount that at least one-fifth of a molecule is present for each molecule of alcohol. The initial stages of the reaction are generally carried out at a temperature not higher than 180‹ C., but the temperature may be raised later to about 180‹ C. to regenerate the condensing agent. The reaction may be carried out under pressure. The alcohol may be produced in situ by reaction between an aromatic hydrocarbon and formaldehyde, or a substance giving rise thereto. In this modification only phosphoric acid or phosphorus pentoxide is used as condensing agent, and the preferred reaction mixture comprises one molecule of condensing agent and five molecules each of hydrocarbon aud formaldehyde; the reaction mixture is preferably maintained in an emulsified condition by agitation. The alcohol or the hydrocarbon giving rise thereto may contain substituents other than hydroxy groups, such as halogen, in the nucleus. The reaction may be carried out in presence or absence of a solvent, such as an excess of hydrocarbon, and the alcohol or its generators may be added in stages to the condensing agent, the latter being regenerated as required between the additions. The products may be purified by dissolving them in an organic solvent and centrifuging the solution, with or without the addition of a little alkali, and if the solvent is volatile in steam the solution may be steam-distilled. Alternatively, the reaction mass may be treated with water and the resin separated and treated with steam, or the resin may be dissolved in a fused hydrocarbon, such as naphthalene, with or without addition of water, and the solution, after evaporation of the acid layer treated to recover the resin. Alternatively, the reaction mass may be treated with steam at super-atmospheric pressure and the resinous layer separated. In any event, the resin may be further purified by treatment with alkali particularly by fusion with lime. Examples describe the condensation of benzyl alcohol with the use of sulphuric acid as condensing agent, the condensation of cinnamic alcohol with the use in turn of phosphoric acid and sulphuric acid as condensing agents, and the condensation of naphthalene and paraformaldehyde with the use as condensing agent of dehydrated phosphoric acid. The products may be dissolved in organic solvents and used as varnishes or paint excipients. Specification 16245/07, [Class 2, Acids and salts, Organic &c.], is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB236326A GB269973A (en) | 1926-01-27 | 1926-01-27 | Improvements in and relating to the manufacture of resin-like bodies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB236326A GB269973A (en) | 1926-01-27 | 1926-01-27 | Improvements in and relating to the manufacture of resin-like bodies |
Publications (1)
Publication Number | Publication Date |
---|---|
GB269973A true GB269973A (en) | 1927-04-27 |
Family
ID=9738223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB236326A Expired GB269973A (en) | 1926-01-27 | 1926-01-27 | Improvements in and relating to the manufacture of resin-like bodies |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB269973A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3321531A (en) * | 1961-09-19 | 1967-05-23 | Haszeldine Robert Neville | Fluorinated benzyl ether polymers and process for their preparation |
-
1926
- 1926-01-27 GB GB236326A patent/GB269973A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3321531A (en) * | 1961-09-19 | 1967-05-23 | Haszeldine Robert Neville | Fluorinated benzyl ether polymers and process for their preparation |
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