GB400698A - Improvements in and relating to resinous compositions and methods of making the same - Google Patents
Improvements in and relating to resinous compositions and methods of making the sameInfo
- Publication number
- GB400698A GB400698A GB14492/32A GB1449232A GB400698A GB 400698 A GB400698 A GB 400698A GB 14492/32 A GB14492/32 A GB 14492/32A GB 1449232 A GB1449232 A GB 1449232A GB 400698 A GB400698 A GB 400698A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenol
- resin
- aqueous formaldehyde
- added
- aldehyde
- 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
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08G12/06—Amines
- C08G12/08—Amines aromatic
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)
- Laminated Bodies (AREA)
Abstract
A moulding-powder is prepared by mixing an aromatic amine-aldehyde condensation product with an alkaline solution of a phenol-aldehyde resin in a water-miscible solvent, neutralizing, washing and drying the precipitate. The aromatic amine-aldehyde condensation product is prepared by condensing the amine with aqueous formaldehyde in the presence of water at room temperature. The phenol-aldehyde resin is still in the "A" or soluble phase having a cure of 30 to 120 seconds on a 160 DEG C. hot-plate. This resin is dissolved in alcohol or other water-miscible solvent and then added to the amine resin. In an example a resin derived from aniline, hydrochloric acid and aqueous formaldehyde at room temperature is mixed with an alcoholic solution of a resin prepared from phenol, aqueous formaldehyde and ammonia to which has been added an alkali solution such as caustic soda. The alcohol may be replaced by solvent such as acetone or dioxane. The precipitate is neutralized with an acid such as hydrochloric or acetic acids and then washed and dried. Other phenol-aldehyde resins that may be employed to replace that used in example (1) include the condensation product of cresol, paraformaldehyde, triethanolamine and aqueous calcium bromide; cresol, aqueous formaldehyde and ammonia; phenol, aqueous formaldehyde and sulphuric acid; and phenol, paraformaldehyde and hydrochloric acid. Dyes or colouring materials may be added to the resins before or after precipitation and fillers may be added to products before moulding. Specification 396,071 is referred to.ALSO:A moulding powder is prepared by mixing an aromatic amine-aldehyde condensation product with an alkaline solution of a phenolaldehyde resin in a water-miscible solvent, neutralizing, washing and drying the precipitate. The aromatic amine-aldehyde condensation product is prepared by condensing the amine with aqueous formaldehyde in the presence of water at room temperature. The phenol-aldehyde resin is still in the "A" or soluble phase, having a cure of 30 to 120 seconds on a 160 DEG C. hot plate. This resin is dissolved in alcohol or other water miscible solvent and then added to the amine resin. In an example a resin derived from aniline, hydrochloric acid and aqueous formaldehyde at room temperature is mixed with an alcoholic solution of a resin prepared from phenol, aqueous formaldehyde and ammonia, to which has been added an alkali solution such as caustic soda. The alcohol may be replaced by solvent such as acetone or dioxane. The precipitate is neutralized with an acid such as hydrochloric or acetic acids and then washed and dried. Other phenol-aldehyde resins that may be employed to replace that used in example (1) include the condensation product of cresol, paraformaldehyde, triethanolamine and aqueous calcium bromide; cresol, aqueous formaldehyde and ammonia; phenol, aqueous formaldehyde and sulphuric acid; and phenol, paraformaldehyde and hydrochloric acid. Dyes or colouring materials may be added to the resins before or after precipitation and fillers may be added to products before moulding. Specification 396,071 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US400698XA | 1931-05-21 | 1931-05-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB400698A true GB400698A (en) | 1933-11-02 |
Family
ID=21908927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14492/32A Expired GB400698A (en) | 1931-05-21 | 1932-05-21 | Improvements in and relating to resinous compositions and methods of making the same |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB400698A (en) |
-
1932
- 1932-05-21 GB GB14492/32A patent/GB400698A/en not_active Expired
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