SE7605413L - URBAN HARD GLUE AND KIT FOR ITS MANUFACTURE - Google Patents
URBAN HARD GLUE AND KIT FOR ITS MANUFACTUREInfo
- Publication number
- SE7605413L SE7605413L SE7605413A SE7605413A SE7605413L SE 7605413 L SE7605413 L SE 7605413L SE 7605413 A SE7605413 A SE 7605413A SE 7605413 A SE7605413 A SE 7605413A SE 7605413 L SE7605413 L SE 7605413L
- Authority
- SE
- Sweden
- Prior art keywords
- formaldehyde
- solution
- stage
- methanol
- polymerized
- Prior art date
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
1536011 Producing UF resins directly from catalytically oxidized methanol P M PUIG 18 Feb 1976 [13 May 1975] 6356/76 Heading C3R [Also in Division C2] A process for the production of urea-formaldehyde adhesives or resins process comprises the stages of: (a) catalytically oxidizing methanol with air; (b) condensing the gases emanating from the catalytic oxidation of the methanol, whereby condensable products therein are condensed in the form of a solution; (c) separating the solution containing condensed products obtained in stage (b) from the uncondensed gases remaining after said condensation stage; (d) cooling the uncondensed gases from stage (c) and washing the cooled gas in a washing column with a solution comprising cold polymerized formaldehyde which takes up the methanol and formaldehyde present in the uncondensed gases; (e) distilling the solution obtained in stage (c) in order to recover separately methanol and a concentrated aqueous formaldehyde solution, the formaldehyde content of which is at least partially in polymerized form; (f) distilling the solution obtained in stage (d) in order to recover the methanol taken up into said solution and to isolate the formaldehyde in the form of an aqueous solution thereof containing polymerized formaldehyde; (g) passing a portion of the aqueous formaldehyde solution obtained in stage (f) to distillation stage (e) and recycling another portion of the aqueous formaldehyde solution obtained in stage (f) to step (d) as the cold polymerized washing solution therein; and (h) mixing the concentrated aqueous solution of formaldehyde obtained in stage (e) with urea under conditions of predetermined pH and temperature in order to obtain urea-formaldehyde adhesives or resins. Distillation stages (e) and (f) may be carried out in a single column.
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 (2)
| Publication Number | Publication Date |
|---|---|
| SE7605413L true SE7605413L (en) | 1976-11-14 |
| SE430897B SE430897B (en) | 1983-12-19 |
Family
ID=9155131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7605413A SE430897B (en) | 1975-05-13 | 1976-05-12 | PROCEDURE FOR THE PREPARATION OF CARBAMID FORMAL HEADLINE AND RESIN |
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) |
Families Citing this family (4)
| 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. |
| ES2171152B1 (en) * | 2001-02-16 | 2003-10-01 | Patentes Novedades Sa | PROCEDURE FOR SEPARATION OF A WATERY MIXTURE OF TRIOXAN AND FORMALDEHYDE AND CORRESPONDING APPLICATIONS. |
| 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
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 |
| 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 |
| ES447890A1 (en) | 1977-07-16 |
| 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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