GB834316A - Urea-formaldehyde condensates and adhesives produced therefrom - Google Patents
Urea-formaldehyde condensates and adhesives produced therefromInfo
- Publication number
- GB834316A GB834316A GB1808557A GB1808557A GB834316A GB 834316 A GB834316 A GB 834316A GB 1808557 A GB1808557 A GB 1808557A GB 1808557 A GB1808557 A GB 1808557A GB 834316 A GB834316 A GB 834316A
- Authority
- GB
- United Kingdom
- Prior art keywords
- urea
- formaldehyde
- product
- formaldehyde condensates
- produced therefrom
- 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)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Solid stable urea-formaldehyde condensates are prepared by mixing urea with 1.5-2.0 mole. equivalents of formaldehyde, in the form of an aqueous solution of the formaldehyde, at pH 6.5-8, heating the mixture at 80-100 DEG C. for 2-6 minutes, cooling, subjecting the product at pH 6.5-7.5 to vacuum distillation at 35-50 DEG C. until the solids content of the residue is about 55-70%, adjusting the pH of the residue to 7.0-8.5 and immediately cooling to form a solid product. The product is useful as an adhesive for which purposes it is preferably brought to about 100 DEG C. after which an acid catalyst, e.g. formic acid, or an acid-producing salt is added and the heating continued until the desired viscosity for adhesive purposes is achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1808557A GB834316A (en) | 1957-06-06 | 1957-06-06 | Urea-formaldehyde condensates and adhesives produced therefrom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1808557A GB834316A (en) | 1957-06-06 | 1957-06-06 | Urea-formaldehyde condensates and adhesives produced therefrom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB834316A true GB834316A (en) | 1960-05-04 |
Family
ID=10106408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1808557A Expired GB834316A (en) | 1957-06-06 | 1957-06-06 | Urea-formaldehyde condensates and adhesives produced therefrom |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB834316A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4564667A (en) * | 1984-02-23 | 1986-01-14 | Bip Chemicals Limited | Urea-formaldehyde resin manufacture |
| CN103820063A (en) * | 2014-03-18 | 2014-05-28 | 浙江红高梁木业有限公司 | Improved urea-formaldehyde adhesive for block boards |
-
1957
- 1957-06-06 GB GB1808557A patent/GB834316A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4564667A (en) * | 1984-02-23 | 1986-01-14 | Bip Chemicals Limited | Urea-formaldehyde resin manufacture |
| CN103820063A (en) * | 2014-03-18 | 2014-05-28 | 浙江红高梁木业有限公司 | Improved urea-formaldehyde adhesive for block boards |
| CN103820063B (en) * | 2014-03-18 | 2016-10-05 | 高金育 | A kind of core-board urea-formaldehyde adhesive of improvement |
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