GB627167A - Improvements in and relating to the production of resinous compositions of matter, and the products resulting therefrom - Google Patents
Improvements in and relating to the production of resinous compositions of matter, and the products resulting therefromInfo
- Publication number
- GB627167A GB627167A GB1890547A GB1890547A GB627167A GB 627167 A GB627167 A GB 627167A GB 1890547 A GB1890547 A GB 1890547A GB 1890547 A GB1890547 A GB 1890547A GB 627167 A GB627167 A GB 627167A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gms
- urea
- mole
- formaldehyde
- melamine
- 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
- 239000000203 mixture Substances 0.000 title abstract 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 34
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 20
- 239000004202 carbamide Substances 0.000 abstract 16
- 229920000877 Melamine resin Polymers 0.000 abstract 5
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 abstract 5
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 2
- 230000001070 adhesive effect Effects 0.000 abstract 2
- 239000004848 polyfunctional curative Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 230000002378 acidificating effect Effects 0.000 abstract 1
- -1 aliphatic alcohols Chemical class 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 235000019270 ammonium chloride Nutrition 0.000 abstract 1
- 238000010533 azeotropic distillation Methods 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 239000003292 glue Substances 0.000 abstract 1
- 239000004922 lacquer Substances 0.000 abstract 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000011120 plywood Substances 0.000 abstract 1
- 239000011541 reaction mixture Substances 0.000 abstract 1
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
- C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
- C08G12/36—Ureas; Thioureas
- C08G12/38—Ureas; Thioureas and melamines
-
- 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
An initial aqueous mixture of a first portion of urea and formaldehyde containing more than 2.25 (preferably not more than 10) of formaldehyde per mole of urea is heated under acidic conditions until equilibrium is reached (shown by the attainment of maximum viscosity); it is then neutralised with alkali, and a second portion of urea added in one step in sufficient amount to give the desired formaldehyde/urea ratio. It is then heated further as desired, and dehydrated to give the product the desired water content. Part of the first portion of urea and/or the whole or part of the second portion may be replaced by an equivalent amount of thiourea and/or melamine. In examples (1) 1 mole. urea and 2.5 moles. formaldehyde, pH3, are refluxed for 30 minutes, the pH is then adjusted to 7.5 by sodium hydroxide, 0.25 mole. of urea is added and the mixture dehydrated under reduced pressure to a viscosity of 35 poises at 25 DEG C. Admixture with a hardener such as ammonium chloride provides an adhesive suitable for hot or cold press bonding of plywood. In other examples: (2) 1 mole. of urea and 4 moles. of formaldehyde are initially reacted and 1 mole. of urea added later; (3) 90 gms. of urea and 30 gms. of thiourea reacted with 410 gms. of 37 per cent formalin and 30 gms. of urea added later; (4) 105 gms. of urea and 15 gms. of melamine reacted with 410 gms. of 37 per cent formalin and 30 gms. of urea added later; (5) 90 gms. of urea and 30 gms. of melamine reacted with 410 gms. of 37 per cent formalin and 30 gms. of urea added later; (6) 75 gms. of urea and 45 gms. of melamine reacted with 410 gms. of 37 per cent formalin and 30 gms. of melamine added later. The products may be used as glues, adhesives with the usual hardener, and in lacquers or moulding compositions. Specification 345,935, and U.S.A. Specification 2,019,453 are referred to. The Provisional Specification describes also the inclusion in the reaction mixture of primary aliphatic alcohols having one to four carbon atoms, and the removal of water from the mixture by azeotropic distillation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1890547A GB627167A (en) | 1947-07-16 | 1947-07-16 | Improvements in and relating to the production of resinous compositions of matter, and the products resulting therefrom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1890547A GB627167A (en) | 1947-07-16 | 1947-07-16 | Improvements in and relating to the production of resinous compositions of matter, and the products resulting therefrom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB627167A true GB627167A (en) | 1949-08-02 |
Family
ID=10120429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1890547A Expired GB627167A (en) | 1947-07-16 | 1947-07-16 | Improvements in and relating to the production of resinous compositions of matter, and the products resulting therefrom |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB627167A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2917427A (en) * | 1955-12-14 | 1959-12-15 | Monsanto Chemicals | Thermosetting resins and high wet strength papers prepared therefrom |
| EP0062389A1 (en) * | 1981-04-07 | 1982-10-13 | METHANOL CHEMIE NEDERLAND V.o.F. | Manufacture of particle board and a novel suitable bonding agent |
| WO2005113625A1 (en) * | 2004-05-19 | 2005-12-01 | Basf Aktiengesellschaft | Amino resin for the production of binding agents |
-
1947
- 1947-07-16 GB GB1890547A patent/GB627167A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2917427A (en) * | 1955-12-14 | 1959-12-15 | Monsanto Chemicals | Thermosetting resins and high wet strength papers prepared therefrom |
| EP0062389A1 (en) * | 1981-04-07 | 1982-10-13 | METHANOL CHEMIE NEDERLAND V.o.F. | Manufacture of particle board and a novel suitable bonding agent |
| WO2005113625A1 (en) * | 2004-05-19 | 2005-12-01 | Basf Aktiengesellschaft | Amino resin for the production of binding agents |
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