CS206068B1 - Method of making the high-reactive ureaformaldehyde bitumens - Google Patents
Method of making the high-reactive ureaformaldehyde bitumens Download PDFInfo
- Publication number
- CS206068B1 CS206068B1 CS495579A CS495579A CS206068B1 CS 206068 B1 CS206068 B1 CS 206068B1 CS 495579 A CS495579 A CS 495579A CS 495579 A CS495579 A CS 495579A CS 206068 B1 CS206068 B1 CS 206068B1
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- Czechoslovakia
- Prior art keywords
- urea
- formaldehyde
- reactive
- weight
- pressure
- Prior art date
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- 229920001807 Urea-formaldehyde Polymers 0.000 title claims description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 title claims description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 5
- 239000004202 carbamide Substances 0.000 claims description 5
- 150000007522 mineralic acids Chemical class 0.000 claims description 3
- 150000007524 organic acids Chemical class 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 239000008098 formaldehyde solution Substances 0.000 claims 1
- 235000015097 nutrients Nutrition 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 239000004823 Reactive adhesive Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Adhesives Or Adhesive Processes (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Description
(54) Sposob výroby vysokoreaktívnych močovinoformaldehydových živíc(54) Method of producing high-reactive urea-formaldehyde resins
Vynález rieši spósob výroby vysokoreaktívnych močovinoformaldehydových živíc vhodných ako poloprodukt pre přípravu celej rady modifikovaných lepidiel a ako vysokoreaktívne lepidlo pre dřevařsky priemysel a nábytkářský priemysel.The invention provides a process for the production of highly reactive urea-formaldehyde resins suitable as a semi-product for the preparation of a variety of modified adhesives and as a highly reactive adhesive for the wood and furniture industries.
PodTa doterajších diskontinuálnych postupov (NSR pat. 2,207 921 a 2 234 857) pri výrobě močovinoformaldehydových lepidiel sa reaktivita dosahuje změnou dávkovania surovin a úpravou reakčnej doby. Pracuje sa spravidla za normálneho tlaku a teplót do 100 °C. Spravidla obsah formaldehydu sa pohybuje v rozmedzí 1 ai 3 % hmotnostných a ako vysokoreaktívny typ živice nie sú vhodné.According to prior discontinuous processes (German Pat. Nos. 2,207,921 and 2,234,857) in the production of urea-formaldehyde adhesives, reactivity is achieved by varying the feed rate and adjusting the reaction time. As a rule, work is carried out at normal pressure and temperatures up to 100 ° C. As a rule, the formaldehyde content is between 1 and 3% by weight and is not suitable as a highly reactive type of resin.
V patentovej literatuře sa vyskytuje celý rad patentov zaoberajúcich sa přípravou močovinoformaldehydových živíc vhodných ako lepidla (Jap. pat. 74-18925 a 74.18928, NSR pat. 2 154 570, pCr pat. 74 080 a SalŠie), avšak výsledný produkt je celkom odlišný od produktu vyrobeného podlá tohto vynálezu. Obsah volného formaldehydu je v rozmedzí 1 až 3 % hmotných a reaktivita s chloridom amonným (15^-ný vodný roztok, 1 % na hmotu lepidla) pri 100 °C je vyššia ako 60 3ekúnd.There are a number of patents dealing with the preparation of urea-formaldehyde resins suitable as adhesives in the patent literature (Jap. Pat. 74-18925 and 74.18928, Germany Pat. the product produced according to the invention. The free formaldehyde content is in the range of 1 to 3% by weight and the reactivity with ammonium chloride (15% aqueous solution, 1% by weight of the adhesive) at 100 ° C is higher than 60 3 seconds.
Podstatou tohto vynálezu je spósob kontinuálnej výroby močovinoformaldehydových živíc v dvoch cirkulačnýoh reakčných okruhoch pri teplote 100 až 150 °C a tlakuThe present invention is based on a process for the continuous production of urea-formaldehyde resins in two circulating reaction circuits at a temperature of 100 to 150 ° C and pressure
206 068206 068
206 068206 068
0,002 až 0,5 MPa v prvom ciřkulačnom reakčnom okruhu, kde prebieha kondenzáoia v prí” tomnosti 0,01 až 0,5 % hmotnostných organiokýoh alebo anorganických kyselin, pričom základný molárny poměr vstupných surovin» močoviny a formaldehydu je 1:1,5 až 1:2,9 s výhodou 1:2,1. Močovinoformaldehyďový predkondenzát sa připravuje predom v samostatnou: miešanom aparáte a po úpravě pH s organickou alebo anorganickou kyselinou sa nastrekuje Serpadlom do tlakového reaktora.0.002 to 0.5 MPa in the first clarifying reaction circuit, where the condensation is carried out in the presence of 0.01 to 0.5% by weight of organo-organic or inorganic acids, the basic molar ratio of urea to formaldehyde starting materials being 1: 1.5 to 1: 2.9, preferably 1: 2.1. The urea-formaldehyde precondensate is prepared beforehand in a separate agitator and after adjusting the pH with an organic or inorganic acid, it is injected by Serpadl into a pressure reactor.
Produkt z prvého reakčného okruhu sa kontinuálně prepúsťa do druhého reakčného stupňa, kde pri tlaku 2,6 až 19,75 kPa je živica zahuštěná na obsah sušiny 50 až 70 % hmotnostných a viskozitu 500 až 2500 mPa.s, Obsah volného formaldehydu je 3 až 8 % hmotnostných, pH produktu sa upravuje prídavkom 0,01-0,5 % hydroxidu sodného na hodnoty 7 až 8,5.The product from the first reaction circuit is continuously transferred to the second reaction stage, where at a pressure of 2.6 to 19.75 kPa the resin is concentrated to a dry matter content of 50 to 70% by weight and a viscosity of 500 to 2500 mPa.s. The pH of the product is adjusted to pH 7-8.5 by addition of 0.01-0.5% sodium hydroxide.
**
Hotové lepidlo o obsahu volného formaldehydu 5 % je velmi reaktivně (želatinaoný Čas pri 100 °0 s chloridom amonným je 20 sekúnd) a poušiva sa v nabytkárskom a drevárskom priemysle napr. pre výrobu drevotrieskových dosák systémom Bartrew, připadne ako poloprodukt pre výrobu montážnych lepidiel a lepidiel pre rýchlodýhovanie.The ready-to-use 5% free formaldehyde adhesive is very reactive (gelatinous time at 100 ° 0 with ammonium chloride is 20 seconds) and is used in the furniture and woodworking industry e.g. for the production of particle board with the Bartrew system, eventually as a semi-product for the production of assembly adhesives and adhesives for rapid veneering.
PřikladExample
Do aparátu s možnosťou ohladenia a miešania sa nadávkuje 19 600 1 formalínu o koncentráoií 37 % hmotnostných, přidá 12 1 10%-ného hydroxidu sodného na úpravu pH v rozmedzí 7 až 8,5 a přidá sa 8 200 kg pevnej močoviny. Po jej rozpuštění sa přidá lOJž-ná kyselina mravenoia v takom množstve, aby pH bolo v rozmedzí 5 až 7»9. Takto pri pravený predkondenzát (molárny poměr močoviny a formaldehydu 1:1,95) sa dávkuje do prvého reakčného stupňa, kde pri teplote 120 °0 a tlaku 0,25 MPa prebieha kondenzaoná reakcia. Produkt z prvého reakčného stupna o viskozite 20 až 80 mPa.s sa odoberá do druhého reakčného stupňa, kde sa zahustí na obsah sušiny 66 aŽ 1% a vizkoZitu 1200 mPa e, pri teplote 55 °C a tlaku 10,0 kPa. Do druhého stupňa sa zároveň kontinuálně přidává 10%-ný hydroxid sodný tak, aby výsledné pH bolo 7»5»19,600 L of 37% by weight of formalin, 12 L of 10% sodium hydroxide to adjust the pH in the range of 7-8.5, and 8,200 kg of solid urea are added to the smoothing and mixing apparatus. After dissolution, 10% formic acid is added in an amount such that the pH is in the range 5-7-9. Thus prepared precondensate (molar ratio of urea to formaldehyde of 1: 1.95) is fed to the first reaction stage, where a condensation reaction takes place at a temperature of 120 ° C and a pressure of 0.25 MPa. The product of the first reaction stage having a viscosity of 20 to 80 mPa.s is taken to the second reaction stage, where it is concentrated to a dry matter content of 66-1% and a viscosity of 1200 mPa.s at 55 ° C and 10.0 kPa. 10% sodium hydroxide is continuously added to the second stage so that the resulting pH is 7 »5»
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS495579A CS206068B1 (en) | 1979-07-16 | 1979-07-16 | Method of making the high-reactive ureaformaldehyde bitumens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS495579A CS206068B1 (en) | 1979-07-16 | 1979-07-16 | Method of making the high-reactive ureaformaldehyde bitumens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS206068B1 true CS206068B1 (en) | 1981-06-30 |
Family
ID=5393444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS495579A CS206068B1 (en) | 1979-07-16 | 1979-07-16 | Method of making the high-reactive ureaformaldehyde bitumens |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS206068B1 (en) |
-
1979
- 1979-07-16 CS CS495579A patent/CS206068B1/en unknown
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