GB535408A - Preparation of lacquers containing melamine formaldehyde condensation products - Google Patents
Preparation of lacquers containing melamine formaldehyde condensation productsInfo
- Publication number
- GB535408A GB535408A GB32339/39A GB3233939A GB535408A GB 535408 A GB535408 A GB 535408A GB 32339/39 A GB32339/39 A GB 32339/39A GB 3233939 A GB3233939 A GB 3233939A GB 535408 A GB535408 A GB 535408A
- Authority
- GB
- United Kingdom
- Prior art keywords
- melamine
- condensation products
- lacquers
- formaldehyde condensation
- formaldehyde
- 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
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with substituted triazines
- C08G12/32—Melamines
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J17/00—Household peeling, stringing, or paring implements or machines
- A47J17/02—Hand devices for scraping or peeling vegetables or the like
- A47J17/04—Citrus fruit peelers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/26—Automatic clutches actuated entirely mechanically acting at definite angular position or disengaging after consecutive definite number of rotations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
535,408. Lacquers ; melamine-formaldehyde condensation products. AMERICAN CYANAMID CO. Dec. 15, 1939, No. 32339. Convention date, Dec. 31, 1938. [Class 2 (iii)] Lacquers containing melamine-formaldehyde condensation products are prepared by reacting, by heating, melamine with aqueous formaldehyde, stopping the reaction after the formation of a methylol melamine and while the solution remains essentially fluid, spray-drying the solution, and boiling the solid reactive intermediate thus obtained in an acidified alcohol, at a pH less than 6 and preferably of a pH of 3 to 4.5, until substantially all the water of reaction is removed. When the melamine is heated with formaldehyde in the molecular ratio of 1 : 6 and at a pH of less than 6, hexamethylol-melamine is formed, and when the molecular ratio is from 1 : 3 to 1:5, and the pH between 8 and 9, the resulting lacquers have improved compatibility with alkyd resins. Specifications 466,096 and 486,577 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US535408XA | 1938-12-31 | 1938-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB535408A true GB535408A (en) | 1941-04-08 |
Family
ID=21984981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32339/39A Expired GB535408A (en) | 1938-12-31 | 1939-12-15 | Preparation of lacquers containing melamine formaldehyde condensation products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB535408A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2485059A (en) * | 1944-05-06 | 1949-10-18 | Monsanto Chemicals | Melamine condensation product |
-
1939
- 1939-12-15 GB GB32339/39A patent/GB535408A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2485059A (en) * | 1944-05-06 | 1949-10-18 | Monsanto Chemicals | Melamine condensation product |
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