CN101200529B - Method for synthesizing environment-friendly type urea-formaldehyde plastics resin - Google Patents
Method for synthesizing environment-friendly type urea-formaldehyde plastics resin Download PDFInfo
- Publication number
- CN101200529B CN101200529B CN2007101904249A CN200710190424A CN101200529B CN 101200529 B CN101200529 B CN 101200529B CN 2007101904249 A CN2007101904249 A CN 2007101904249A CN 200710190424 A CN200710190424 A CN 200710190424A CN 101200529 B CN101200529 B CN 101200529B
- Authority
- CN
- China
- Prior art keywords
- urea
- formaldehyde
- resin
- reaction
- water
- 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 - Fee Related
Links
- 229920001807 Urea-formaldehyde Polymers 0.000 title claims abstract description 43
- 229920005989 resin Polymers 0.000 title claims abstract description 37
- 239000011347 resin Substances 0.000 title claims abstract description 37
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000004033 plastic Substances 0.000 title claims description 8
- 229920003023 plastic Polymers 0.000 title claims description 8
- 230000002194 synthesizing effect Effects 0.000 title claims description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 70
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004202 carbamide Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 22
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 16
- 238000010189 synthetic method Methods 0.000 claims abstract description 13
- 239000008098 formaldehyde solution Substances 0.000 claims abstract description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 8
- 150000007524 organic acids Chemical class 0.000 claims abstract description 5
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 claims description 17
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 12
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 6
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 3
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 claims description 3
- -1 cyanurotriamide modified urea Chemical class 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000006276 transfer reaction Methods 0.000 claims description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 2
- VCZNNAKNUVJVGX-UHFFFAOYSA-N 4-methylbenzonitrile Chemical compound CC1=CC=C(C#N)C=C1 VCZNNAKNUVJVGX-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 2
- 235000019253 formic acid Nutrition 0.000 claims description 2
- 235000006408 oxalic acid Nutrition 0.000 claims description 2
- 235000019260 propionic acid Nutrition 0.000 claims description 2
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 2
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000012295 chemical reaction liquid Substances 0.000 abstract 5
- 239000000206 moulding compound Substances 0.000 abstract 3
- 238000003915 air pollution Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 19
- 239000000843 powder Substances 0.000 description 17
- 241000237502 Ostreidae Species 0.000 description 9
- 235000020636 oyster Nutrition 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 8
- 238000004898 kneading Methods 0.000 description 7
- 239000012752 auxiliary agent Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 230000035484 reaction time Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 description 4
- 238000009700 powder processing Methods 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004630 mental health Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000010459 dolomite Substances 0.000 description 2
- 229910000514 dolomite Inorganic materials 0.000 description 2
- 235000021050 feed intake Nutrition 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NPJDPKXNWFMWHO-UHFFFAOYSA-N C=O.NC(N)=O.NC#N Chemical compound C=O.NC(N)=O.NC#N NPJDPKXNWFMWHO-UHFFFAOYSA-N 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
Landscapes
- Phenolic Resins Or Amino Resins (AREA)
Abstract
A synthetic method of environment-friendly urea moulding compound resin relates to urea formaldehyde and the synthetic method of modifying urea formaldehyde by tripolycyanamide. Firstly, a ph8-9 formaldehyde solution added with urea or urea and tripolycyanamide reacts under the temperature of 60 to 90 DEG C and when the reaction liquid turns into ivory-white thick liquid, water with the basically same pH value of the reaction liquid is added for even mixing or reaction under the temperature of 70 to 90 DEG C for 0.5 to 1.5 hours; then organic acid is used to adjust pH to 5-6 and further reaction goes on under the temperature of 70 to 90 DEG C; when the reaction liquid turns into ivory-white thick liquid; afterwards, sodium carbonate solution is used to adjust the pH of the reaction liquid to 7-8 and water with the basically the same pH value of the reaction liquid is added for even mixing; finally, the ivory-white thick resin liquid is sent to the sequent procedures and processed into the urea moulding compound. In the method, excessive formaldehyde is converted into resin as much as possible, thus reducing the air pollution and protecting workers health; at the same time, the formaldehyde residue of the urea moulding compound is greatly reduced, so the present invention is worthy the name of environment-friendly process compared with the traditional process.
Description
One, technical field
The present invention relates to a kind of preparation method of resin, specifically a kind of synthetic method of environment-friendly type urea-formaldehyde plastics resin.
Two, background technology
To be urea-formaldehyde resin and modified urea-formaldehyde resin adding various fillers and auxiliary agent after the product that kneadings, drying, pulverizing, ball milling, screening obtain is referred to as to urea-formaldehyde moulding powder.Described filler and auxiliary agent comprise Mierocrystalline cellulose, glass fibre, asbestos, mica powder, silica powder, lime carbonate, talcum powder, ground dolomite, barium sulfate, stearate, tinting material etc., add according to the purposes needs.Resin can be used for tackiness agent, and urea-formaldehyde moulding powder mainly is mainly used in electric appliance casing, switch, socket, phone part and bottle cap, button, tableware etc.
Urea-formaldehyde resin is a kind of conventional resins, is formed by urea and formaldehyde condensation polymer.Concrete preparation method is earlier with in 30～40% the formaldehyde solution input reactor, transfer pH8～9 with urotropine, stirring down then, input urea carries out polycondensation, by detecting free formaldehyde control reaction end, when free formaldehyde reaches 6～8% reaction end (" Chemical Manufacture flowchart illustrations " (volume two), the 378th page, in September, 1988, second edition, Chemical Industry Press published and distributed).Urea-formaldehyde moulding powder with this resin treatment claims A1 type urea-formaldehyde moulding powder traditionally.
Modified urea-formaldehyde resin is with trimeric cyanamide urea-formaldehyde resin to be improved, and its preparation method also is to transfer formaldehyde solution pH8～9, adds urea then and trimeric cyanamide reacts to terminal.Urea-formaldehyde moulding powder with this resin treatment has different shaped such as A2 type, A3 type, A4 type, and the difference of model means that not only the filler that is added is different with auxiliary agent, also means properties-correcting agent trimeric cyanamide consumption difference.
Produce many enterprises of urea-formaldehyde plastics resin at present, the synthesis temperature of urea-formaldehyde resin is generally 60 ℃, and thinks and can not surpass 60 ℃, otherwise goods can bubble the scrap rate height.The synthesis temperature of modified urea-formaldehyde resin is generally 80 ℃, generally believe that reaction end can not be excessive, otherwise resin viscosity is big, and poor stability influences Products Quality the most at last.These two kinds of resins of institute's synthetic are colourless transparent liquid, and solid content has only about 50.6% usually.
No matter be preparation urea-formaldehyde resin or preparation modified urea-formaldehyde resin, formaldehyde all be excessive (with the mol ratio of urea be 1.2～1.5: 1) this part excessive formaldehyde is not by components utilising, major part wherein is discharged in the atmosphere in the process of processing urea-formaldehyde moulding powder, the dry workshop section after mediating particularly, formaldehyde volatilizees in a large number, always filling the air the distinctive irritating smell of formaldehyde in the workshop, the operator has one's face covered with tears when serious, and cough is more than.Small part formaldehyde final residue is in the goods of urea-formaldehyde moulding powder, and through the distilled water test, removing residue formaldehyde reaches 30mg/kg.
Excessive formaldehyde has not only been wasted resource, has polluted atmosphere, has also had a strong impact on operator's physical and mental health, also makes the urea-formaldehyde moulding powder goods not meet requirements of green environmental protection simultaneously.
Three, summary of the invention
Urea-formaldehyde plastics resin synthetic method provided by the present invention, being intended to protect environment and operator's physical and mental health, technical problem to be solved is to improve traditional synthesis.
The alleged urea-formaldehyde plastics resin synthetic method of the present invention is meant urea-formaldehyde resin and with the synthetic method of these two kinds of resins of cyanurotriamide modified urea resin.
Present method is the same with traditional technology, also comprise and regulate the formaldehyde solution pH and the reaction that feeds intake, specifically at first transfer formaldehyde solution pH8～9 with urotropine or sodium carbonate solution, adding urea then reacts (preparation urea-formaldehyde resin) or adds urea and trimeric cyanamide reacts (preparation modified urea-formaldehyde resin), improvement of the present invention has two kinds of schemes, first kind of scheme is to react under 60～90 ℃ of conditions after adding urea or add urea and trimeric cyanamide in the formaldehyde solution of pH8～9, until the reaction solution thick shape resin liquid that is creamy white.Carrying out along with reaction, the pH value of reaction solution can progressively reduce, during to the thick shape resin liquid of oyster white, the pH value is about about 6, if pH≤5 o'clock then need with about lye pH adjustment to 7, at this moment add water with the pH value basically identical of reaction solution, preferably water temperature also with the temperature basically identical of reaction solution, after stirring the oyster white resin liquid sent follow-up workshop sections such as kneading processing urea-formaldehyde moulding powder.This scheme is simple to operate, but long reaction time needs 5～6 hours, improves temperature of reaction and helps shortening the reaction times, improves usage ratio of equipment, reacts to the thick shape liquid of oyster white under preferred 75～90 ℃ of conditions.
Second kind of scheme is to react stage by stage to carry out, under 70～90 ℃ of conditions, reacted 0.5～1.5 hour after promptly at first in the formaldehyde solution of pH8～9, adding urea or adding urea and trimeric cyanamide, transfer reaction solution pH5～6 with organic acid then, continue to react to the reaction solution thick shape resin liquid that is creamy white in 70～90 ℃ of conditions; Reaction finishes the back and transfers reaction solution pH7～8 with sodium carbonate solution, adds the water with the pH value basically identical of reaction solution at last, preferably water temperature also with the temperature basically identical of reaction solution, send follow-up kneading workshop section to process urea-formaldehyde moulding powder the oyster white resin liquid after stirring.All preferred 75～90 ℃ of two stages (alkalescence and slightly acidic) temperature of reaction, this scheme reaction times is shorter, and slightly acidic is reacted to the thick shape liquid of oyster white needs 0.5～1.5 hour, entire reaction less than three hours approximately.
Described organic acid is selected from formic acid or acetate or oxalic acid or propionic acid or phenylformic acid or paratolunitrile or Phenylsulfonic acid or tosic acid or thionamic acid etc.
The add-on of water needs and different with the urea-formaldehyde moulding powder model, and variation range is 1～120wt% of raw material formaldehyde solution amount.So-called pH value basically identical with reaction solution is meant that such as reaction solution pH7.5, then added water pH7～8 get final product.Test shows, contains the quality that ethanol or methyl alcohol etc. do not influence product in the added water.The effect of water is a letdown resin, and one makes things convenient for discharging, two when conveniently mediating with the mixing of various fillers and auxiliary agent.
In the method, the terminal point of Indicator Reaction all is creamy white thick with reaction solution, no matter is by prolonging reaction times or staged reaction, and its terminal point is all very consistent, and this is embodied in solid content all at 55～70wt%, and viscosity is in 5～8 seconds scopes.This viscosity is the viscosity that the bubble assay method characterizes, and concrete operations are that sample thief places the standard test tube (time value that arrives test tube bottom (manage the end up this moment) with the bubble of overflowing in the sample is represented for the mouth of pipe position of φ 7.5 * 150mm), upset rapidly then.Present method stable operation has guaranteed the stable of resin quality simultaneously, and has improved synthesis yield more than 10%.
The present invention is by prolonging reaction times or the elementary reaction under alkalescence or solutions of weak acidity, make amino extending to as far as possible be reacted to the end with the mutually square the Direction of Reaction of the polycondensation of aldehyde radical, urea and trimeric cyanamide are fully utilized, excessive formaldehyde is transformed into resin as much as possible, an obvious effects is in the dry workshop section that processes urea-formaldehyde moulding powder, formaldehyde odor is very light in the workshop, no obvious stimulation effect; With test removing residue formaldehyde 5～10mg/kg in the urea-formaldehyde moulding powder goods of this resin treatment through distilled water.
It is genuine environment-friendly type that present method is compared with traditional technology, has both made full use of resource, has protected environment and operator's physical and mental health again effectively, and the removing residue formaldehyde in the goods is reduced significantly.
Can improve the addition of various fillers, auxiliary agent when the processing urea-formaldehyde moulding powder with the urea-formaldehyde resin of present method preparation or modified urea-formaldehyde resin, can bring up to 20% such as ground dolomite, both guaranteed the quality of urea-formaldehyde moulding powder, reduced the unit consumption of resin again, and helped reducing cost.
Four, embodiment
(1) urea-formaldehyde resin is synthetic
1,40% formaldehyde 180kg is dropped in the reactor, stir down and transfer pH8.5 with urotropine or sodium carbonate solution, add 98% urea 123kg then, react when being warming up to 85 ℃, until the reaction solution thick shape liquid that is creamy white, resin viscosity 6 seconds, cooling, the water 5kg that adds 80 ℃ of pH value about 7 and temperature simultaneously with the discharging of the thick shape resin of oyster white, send the kneading workshop section of urea-formaldehyde moulding powder processing after stirring.
2, feed intake and transfer pH with example 1, be warming up to 85 ℃ of reactions 1 hour, transfer reaction solution pH5.5 with 50% acetate then, continue at and react under 85 ℃, transfer pH7.5 with sodium carbonate solution simultaneously, resin viscosity 7 seconds to the reaction solution thick shape liquid that is creamy white, cooling, the corresponding to distilled water 10kg of adding at last and reacting liquid pH value and temperature with the discharging of the thick shape resin of oyster white, send the kneading workshop section of urea-formaldehyde moulding powder processing after stirring.
(2) modified urea-formaldehyde resin is synthetic
3,40% formaldehyde 180kg is dropped in the reactor, stir down and transfer pH8.5 with urotropine or sodium carbonate solution, add 98% urea 120kg and 98% trimeric cyanamide (white crystal) 12kg then, heat up in 85 ℃ and react, until the reaction solution thick shape liquid that is creamy white, resin viscosity 6 seconds, cooling, the water 180kg that adds 80 ℃ of pH value about 7 and temperature simultaneously with the discharging of oyster white resin, send the kneading workshop section of urea-formaldehyde moulding powder processing after stirring.
4, feed intake and transfer pH with example 3, be warming up to 85 ℃ of reactions 1 hour, transfer pH5.5 with Phenylsulfonic acid then, continue at and react under 85 ℃, transfer pH7.5 with sodium carbonate solution simultaneously, resin viscosity 7 seconds to the reaction solution thick shape liquid that is creamy white, cooling, the corresponding to water 200kg of adding at last and reacting liquid pH value and temperature with the discharging of oyster white resin, send the kneading workshop section of urea-formaldehyde moulding powder processing after stirring.
5, in example 1～4, contain 1～10% methyl alcohol or ethanol in the added water.
Claims (7)
1. method for synthesizing environment-friendly type urea-formaldehyde plastics resin, be meant urea-formaldehyde resin and with the synthetic method of cyanurotriamide modified urea resin, comprise the pH value of regulating formaldehyde solution and the reaction that feeds intake, it is characterized in that: described reaction be after in the formaldehyde solution of pH8～9, adding urea or adding urea and trimeric cyanamide in reacting the water that when reaction solution is creamy white thick shape liquid, adds with the reacting liquid pH value basically identical under 75～90 ℃, the add-on of water is 1～120wt% of raw material formaldehyde amount.
2. synthetic method according to claim 1 is characterized in that: the temperature of the water that is added and reacting liquid temperature basically identical.
3. synthetic method according to claim 1 and 2 is characterized in that: contain methyl alcohol or ethanol in the water that is added.
4. method for synthesizing environment-friendly type urea-formaldehyde plastics resin, be meant urea-formaldehyde resin and with the synthetic method of cyanurotriamide modified urea resin, comprise the pH value of regulating formaldehyde solution and the reaction that feeds intake, it is characterized in that: described reaction is to react 0.5～1.5 hour under 75～90 ℃ of conditions after at first adding urea or add urea and trimeric cyanamide in the formaldehyde solution of pH8～9; Transfer pH5～6 with organic acid then, transfer reaction solution pH7～8 in continuing to react under 75～90 ℃ of conditions when reaction solution is creamy white thick shape liquid with sodium carbonate solution, add the water with the pH value basically identical of reaction solution at last, the add-on of water is 1～120wt% of raw material formaldehyde amount.
5. synthetic method according to claim 4 is characterized in that: described organic acid is selected from formic acid or acetate or oxalic acid or propionic acid or phenylformic acid or paratolunitrile or Phenylsulfonic acid or tosic acid or thionamic acid.
6. synthetic method according to claim 4 is characterized in that: the temperature of the water that is added and reacting liquid temperature basically identical.
7. according to claim 4 or 6 described synthetic methods, it is characterized in that: contain methyl alcohol or ethanol in the water that is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101904249A CN101200529B (en) | 2007-11-22 | 2007-11-22 | Method for synthesizing environment-friendly type urea-formaldehyde plastics resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101904249A CN101200529B (en) | 2007-11-22 | 2007-11-22 | Method for synthesizing environment-friendly type urea-formaldehyde plastics resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101200529A CN101200529A (en) | 2008-06-18 |
| CN101200529B true CN101200529B (en) | 2010-12-08 |
Family
ID=39515915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101904249A Expired - Fee Related CN101200529B (en) | 2007-11-22 | 2007-11-22 | Method for synthesizing environment-friendly type urea-formaldehyde plastics resin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101200529B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104945843A (en) * | 2015-07-28 | 2015-09-30 | 太仓市晨洲塑业有限公司 | Modified UF (urea formaldehyde) resin |
| CN106473326B (en) * | 2016-10-18 | 2019-08-13 | 大隅洋 | Lauxite button and preparation method thereof |
| CN108680462A (en) * | 2018-04-24 | 2018-10-19 | 天津大学 | Evaluation method for reaction end in water-soluble thiocarbamide urea formaldehyde building-up process |
-
2007
- 2007-11-22 CN CN2007101904249A patent/CN101200529B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101200529A (en) | 2008-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106589799A (en) | Lignin modified phenolic resin based composite material and preparation method thereof | |
| CN106084189A (en) | Liquid condition titanium series catalyst and the preparation method using its manufacture polyester polymers | |
| CN105121500B (en) | Method for producing titanium-containing catalyst, titanium-containing catalyst, method for producing polyester, and polyester | |
| CN101200529B (en) | Method for synthesizing environment-friendly type urea-formaldehyde plastics resin | |
| CN104230724A (en) | Preparation method of diethylene monoisopropanolamine | |
| CN106966882A (en) | A kind of preparation method of tetrachloroquinone | |
| CN101230123A (en) | Method for comprehensive utilization of by-products produced by p-hydroxyphenylhydantoin | |
| CN110256946A (en) | Polyurea waterproof coating material production technology | |
| CN105602256A (en) | Low-compression-deformation two-component addition-type low-hardness silicone rubber and preparation method thereof | |
| CN101531389A (en) | Method for producing polyaluminium chloride | |
| CN101157746B (en) | New method for synthesizing melamine formaldehyde resin | |
| CN107573006A (en) | A kind of fiber reinforcement magnesium oxysulfide red mud plate and preparation method | |
| CN101348548A (en) | Environment-friendly Process for Synthesizing Phenolic Resin | |
| CN115403741B (en) | Epoxy resin and synthetic method and application thereof | |
| CN103319983B (en) | A kind of powder coating of high bending | |
| JP4334044B2 (en) | Method for producing liquid epoxy resin | |
| AU636077B2 (en) | Extended mix life magnesia refractory aggregates for brick and gunning mixes | |
| CN116023411B (en) | Preparation method of organic phosphorus compound, epoxy molding compound and application thereof | |
| CN110272329A (en) | The preparation method of one kind 1,2- hexylene glycol | |
| CN101538452B (en) | Formaldehyde reducing agent for finished product urea-formaldehyde glue and application method thereof | |
| CN100398206C (en) | Catalyst for the production of ethoxyquinoline | |
| CN101130649A (en) | Low cost latex paint for inner wall of building | |
| CN109721986A (en) | Plastic products and preparation method thereof | |
| JP2006002126A (en) | Epoxy resin composition | |
| CN108084622A (en) | A kind of novel acrylic plate and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220421 Address after: 239057 No. 3 Erlang Road, Yaopu Town, Nanqiao District, Chuzhou City, Anhui Province Patentee after: Chuzhou Shiyang environmental protection plastic wood technology Co.,Ltd. Address before: 239075 No. 1-47, Yaopu Town North Street, Nanqiao District, Chuzhou City, Anhui Province Patentee before: Yang Suyin |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20211122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |