GB984743A - A method for producing aminoplast resins - Google Patents
A method for producing aminoplast resinsInfo
- Publication number
- GB984743A GB984743A GB2615562A GB2615562A GB984743A GB 984743 A GB984743 A GB 984743A GB 2615562 A GB2615562 A GB 2615562A GB 2615562 A GB2615562 A GB 2615562A GB 984743 A GB984743 A GB 984743A
- Authority
- GB
- United Kingdom
- Prior art keywords
- paraformaldehyde
- formalin
- mixture
- urea
- heating
- 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
- C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
- C08G12/12—Ureas; Thioureas
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
In a process for the production of ureaformaldehyde resins, urea and flaked paraformaldehyde are reacted in aqueous alkaline conditions, with or without formalin present, by heating the mixture to depolymerize the paraformaldehyde, then acidifying and heating to produce condensation. Preferably the urea and paraformaldehyde flakes are added to premixed formalin and NaOH, and the mixture is boiled until the paraformaldehyde is all dissolved, then acidified, e.g. with acetic acid, and further heated until the required viscosity is obtained. An anti-foam agent, e.g. nonyl alcohol, may be present, preferably being added to the formalin -NaOH mixture. Uses: coating sand particles.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2615562A GB984743A (en) | 1962-07-07 | 1962-07-07 | A method for producing aminoplast resins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2615562A GB984743A (en) | 1962-07-07 | 1962-07-07 | A method for producing aminoplast resins |
Publications (1)
Publication Number | Publication Date |
---|---|
GB984743A true GB984743A (en) | 1965-03-03 |
Family
ID=10239234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2615562A Expired GB984743A (en) | 1962-07-07 | 1962-07-07 | A method for producing aminoplast resins |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB984743A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2453869A1 (en) * | 1979-04-09 | 1980-11-07 | Charbonnages Ste Chimique | Urea!-formaldehyde! precondensate prodn. from solid formaldehyde - in presence of water and under specific reaction conditions of pH and reactants ratio |
-
1962
- 1962-07-07 GB GB2615562A patent/GB984743A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2453869A1 (en) * | 1979-04-09 | 1980-11-07 | Charbonnages Ste Chimique | Urea!-formaldehyde! precondensate prodn. from solid formaldehyde - in presence of water and under specific reaction conditions of pH and reactants ratio |
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