ES447890A1 - Process for the production of urea-formaldehyde adhesives or resins and products obtained thereby - Google Patents
Process for the production of urea-formaldehyde adhesives or resins and products obtained therebyInfo
- Publication number
- ES447890A1 ES447890A1 ES447890A ES447890A ES447890A1 ES 447890 A1 ES447890 A1 ES 447890A1 ES 447890 A ES447890 A ES 447890A ES 447890 A ES447890 A ES 447890A ES 447890 A1 ES447890 A1 ES 447890A1
- Authority
- ES
- Spain
- Prior art keywords
- formaldehyde
- methanol
- urea
- condensed
- resins
- 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
Abstract
Procedure for preparing glues and urea-formaldehyde resins characterized in that it comprises in combination the following steps: a) methanol is catalytically oxidized by air, b) the gases that prevent the catalytic oxidation of methanol are condensed, c) the condensed products are separated from the uncondensed gases, d) the gases are cooled, condensed and washed in a washing column by means of a cold polymerized formaldehyde solution that retains the methanol and formaldehyde they contain, e) the solution obtained in step c) is distilled so that a concentrated aqueous solution of formaldehyde and methanol is recovered separately, f) the solution obtained in step d) is distilled so that the methanol is recovered and the formaldehyde is fixed, g) a part of the formaldehyde solution obtained in step f) is combined with the condensed and distilled product obtained in step e), h) the concentrated aqueous formaldehyde solution from stage e) is mixed with urea under certain conditions of pH and temperature to obtain urea-formaldehyde glues or resins. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7514794A FR2311048A1 (en) | 1975-05-13 | 1975-05-13 | PROCESS FOR PREPARATION OF UREE-FORMALDEHYDE GLUES OR RESINS AND PRODUCTS OBTAINED BY IMPLEMENTATION OF THIS PROCESS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES447890A1 true ES447890A1 (en) | 1977-07-16 |
Family
ID=9155131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES447890A Expired ES447890A1 (en) | 1975-05-13 | 1976-05-13 | Process for the production of urea-formaldehyde adhesives or resins and products obtained thereby |
Country Status (18)
| Country | Link |
|---|---|
| JP (1) | JPS5856368B2 (en) |
| AR (1) | AR213286A1 (en) |
| AT (1) | AT350695B (en) |
| AU (1) | AU503309B2 (en) |
| BE (1) | BE841663A (en) |
| BR (1) | BR7602981A (en) |
| CA (1) | CA1070889A (en) |
| CH (1) | CH614454A5 (en) |
| DE (1) | DE2606269C3 (en) |
| ES (1) | ES447890A1 (en) |
| FR (1) | FR2311048A1 (en) |
| GB (1) | GB1536011A (en) |
| IT (1) | IT1065986B (en) |
| MX (1) | MX144145A (en) |
| NL (1) | NL165726C (en) |
| SE (1) | SE430897B (en) |
| SU (1) | SU940642A3 (en) |
| ZA (1) | ZA762576B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2171152A1 (en) * | 2001-02-16 | 2002-08-16 | Patentes Novedades Sa | A process for the separation of an aqueous mixture of trioxane and formaldehyde and corresponding applications |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2010959A6 (en) * | 1989-05-10 | 1989-12-01 | Patentes Novedades Sa | Method for producing stabilized solutions of formaldehyde with methanol. |
| GB201502893D0 (en) * | 2015-02-20 | 2015-04-08 | Johnson Matthey Plc | Process |
| GB201502894D0 (en) | 2015-02-20 | 2015-04-08 | Johnson Matthey Plc | Process |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US23174A (en) * | 1859-03-08 | Improvement in corn-harvesters |
-
1975
- 1975-05-13 FR FR7514794A patent/FR2311048A1/en active Granted
-
1976
- 1976-02-16 NL NL7601572.A patent/NL165726C/en not_active IP Right Cessation
- 1976-02-17 DE DE2606269A patent/DE2606269C3/en not_active Expired
- 1976-02-18 GB GB6356/76A patent/GB1536011A/en not_active Expired
- 1976-04-27 AU AU13343/76A patent/AU503309B2/en not_active Expired
- 1976-04-29 ZA ZA762576A patent/ZA762576B/en unknown
- 1976-05-03 CA CA251,702A patent/CA1070889A/en not_active Expired
- 1976-05-06 MX MX164574A patent/MX144145A/en unknown
- 1976-05-07 SU SU762356242A patent/SU940642A3/en active
- 1976-05-10 BE BE166906A patent/BE841663A/en not_active IP Right Cessation
- 1976-05-10 CH CH582476A patent/CH614454A5/en not_active IP Right Cessation
- 1976-05-12 AT AT347676A patent/AT350695B/en not_active IP Right Cessation
- 1976-05-12 BR BR7602981A patent/BR7602981A/en unknown
- 1976-05-12 IT IT49431/76A patent/IT1065986B/en active
- 1976-05-12 SE SE7605413A patent/SE430897B/en not_active IP Right Cessation
- 1976-05-12 JP JP51053393A patent/JPS5856368B2/en not_active Expired
- 1976-05-13 ES ES447890A patent/ES447890A1/en not_active Expired
- 1976-05-13 AR AR263273A patent/AR213286A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2171152A1 (en) * | 2001-02-16 | 2002-08-16 | Patentes Novedades Sa | A process for the separation of an aqueous mixture of trioxane and formaldehyde and corresponding applications |
| WO2002066455A1 (en) * | 2001-02-16 | 2002-08-29 | Patentes Y Novedades S.L. | A process for the separation of an aqueous mixture of trioxane and formaldehyde and corresponding applications |
Also Published As
| Publication number | Publication date |
|---|---|
| CH614454A5 (en) | 1979-11-30 |
| ATA347676A (en) | 1978-11-15 |
| CA1070889A (en) | 1980-01-29 |
| BE841663A (en) | 1976-11-10 |
| NL165726C (en) | 1981-05-15 |
| MX144145A (en) | 1981-09-02 |
| AR213286A1 (en) | 1979-01-15 |
| AU503309B2 (en) | 1979-08-30 |
| FR2311048B1 (en) | 1979-04-27 |
| SE7605413L (en) | 1976-11-14 |
| SU940642A3 (en) | 1982-06-30 |
| JPS5856368B2 (en) | 1983-12-14 |
| FR2311048A1 (en) | 1976-12-10 |
| NL7601572A (en) | 1976-11-16 |
| SE430897B (en) | 1983-12-19 |
| NL165726B (en) | 1980-12-15 |
| AT350695B (en) | 1979-06-11 |
| DE2606269C3 (en) | 1982-09-02 |
| AU1334376A (en) | 1977-11-03 |
| DE2606269B2 (en) | 1980-12-11 |
| ZA762576B (en) | 1977-04-27 |
| DE2606269A1 (en) | 1976-11-18 |
| JPS51139895A (en) | 1976-12-02 |
| IT1065986B (en) | 1985-03-04 |
| BR7602981A (en) | 1977-06-07 |
| GB1536011A (en) | 1978-12-13 |
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