CN1180859C - Formaldehyde eliminating agent and its production process - Google Patents
Formaldehyde eliminating agent and its production process Download PDFInfo
- Publication number
- CN1180859C CN1180859C CNB01140051XA CN01140051A CN1180859C CN 1180859 C CN1180859 C CN 1180859C CN B01140051X A CNB01140051X A CN B01140051XA CN 01140051 A CN01140051 A CN 01140051A CN 1180859 C CN1180859 C CN 1180859C
- Authority
- CN
- China
- Prior art keywords
- free formaldehyde
- formaldehyde
- agent
- urea
- eliminating agent
- 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 - Lifetime
Links
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 183
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 18
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 17
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004202 carbamide Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims abstract description 9
- 235000019257 ammonium acetate Nutrition 0.000 claims abstract description 9
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 9
- 239000005695 Ammonium acetate Substances 0.000 claims abstract description 8
- 229940043376 ammonium acetate Drugs 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000005516 engineering process Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002023 wood Substances 0.000 abstract description 13
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 2
- 238000005034 decoration Methods 0.000 abstract 1
- 235000019256 formaldehyde Nutrition 0.000 description 49
- 238000000034 method Methods 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 229920001807 Urea-formaldehyde Polymers 0.000 description 4
- 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 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 239000001887 acacia decurrens willd. var. dealbata absolute Substances 0.000 description 1
- -1 aldehyde compound Chemical class 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The present invention relates to an agent for eliminating free formaldehyde, and production processes of the agent for eliminating free formaldehyde. The agent for eliminating free formaldehyde comprises the following raw materials with the weight percent: 20 to 25% of sodium carbonate, 2 to 3% of ammonium chloride, 5 to 8% of urea, 5 to 7% of ammonium acetate, and 60 to 68% of water; the raw materials are polymerized and mixed to form the agent for eliminating free formaldehyde. The agent for eliminating free formaldehyde is mainly used for reducing the content of free formaldehyde in indoor air after wood-based panels are used for indoor decoration. After 25 milliliters of the agent for eliminating free formaldehyde is sprayed in air per cubic meter, the content of the free formaldehyde in the indoor air can be reduced to the national current standard (the content of free formaldehyde is less than or equal to 0.08 mg/m3), and thus, the content of the free formaldehyde in the indoor air reaches the national standard.
Description
Technical field
The present invention relates to a kind of formaldehyde eliminating agent and production technology thereof, the formaldehyde in indoor air content that this formaldehyde eliminating agent can reduce the free formaldehyde in artificial plate burst size and fit up with wood-based plate makes the free formaldehyde content in the room air reach existing national standard≤0.08mg/m
3
Background technology
In adhesion agent for wood industry, urea-formaldehyde resin adhesive accounts for 65%-70%.
Advantage such as that urea-formaldehyde resin adhesive has is inexpensive, raw material, production technology are simple, easy to use, but resin resistance to water and resistance to ag(e)ing are relatively poor.Produce and use in and make wood-based plate after, all have free formaldehyde to overflow, serious environment pollution be detrimental to health.
One of primary raw material that uses when Lauxite is made is exactly a formaldehyde.Formaldehyde is the very strong aldehyde compound of a kind of reactivity, and it can make protein harden (sex change).Can stimulate the upper respiratory tract and cornea etc. when formaldehyde reaches finite concentration, human body is worked the mischief.Various countries to yard in one's power the concentration of formaldehyde in the room all made limit regulation.Be decided to be 1ppm as France, Denmark's workplace critical limit, Britain is decided to be 2ppm, and the U.S. is decided to be 3ppm.Various countries stipulate the formaldehyde in indoor air concentration limit: Denmark is 0.12ppm, and the U.S., France are 0.1ppm, and Sweden is 0.4ppm.
Wood-based plate with urea-formaldehyde resin adhesive production is widely used in building materials, finishing and furniture, and therefore, it is the problem that countries in the world adhesives industries and wood-based panel industry are extremely paid close attention to that the formaldehyde of wood-based plate discharges always.In decades for reducing the free formaldehyde of Lauxite, the many scholars in various countries have made number of research projects, the main research method that adopts: the one, change the mol ratio of formaldehyde and urea, make its reaction perfect as far as possible, free formaldehyde content drops to minimum.The 2nd, in Lauxite, add catching agent for free formaldehyde (as bean powder, mimosa extract, melamine, urea etc.), it is combined with formaldehyde, thereby reach the purpose that reduces free formaldehyde.First method is used more, for example, reduce the mol ratio of formaldehyde and urea, the consumption of urea is improved, the free formaldehyde content of resin is reduced to below 0.5%, but this technology, facts have proved, though free formaldehyde content has reduced, there is unnecessary urea in the resin, the wood-based plate resistance to water of manufacturing is reduced; Secondly, adopt the method, the curing reaction of urea formaldehyde resin time lengthening, shorten storage period.Second method, applicability is stronger.Multiple modifier can with formaldehyde generation chemical reaction, thereby absorb free formaldehyde.But these modifier prices are more expensive, will certainly improve the cost of product, and addition is too much, can influence the curing of resin, reduce the bonding strength of wood-based plate.
Summary of the invention
Problems at above method exists the objective of the invention is to realize a kind of formaldehyde eliminating agent.With adopting Lauxite is the wood-based plate that adhesive is made, at plate face spraying one deck formaldehyde eliminating agent solution of the present invention, the burst size of methanal of handling the back wood-based plate reaches environmental protection requirement, also can spray a certain amount of formaldehyde eliminating agent of the present invention in the room that content of formaldehyde exceeds standard in air, make the requirement that concentration of formaldehyde is up to state standards in the indoor air.
Another object of the present invention is to realize the production technology of this formaldehyde eliminating agent.
To achieve these goals, the present invention takes following technical scheme: this formaldehyde eliminating agent is by following weight percentages, and is made through copolymerizing and blending,
Sodium carbonate 20-25%
Ammonium chloride 2-3%
Urea 5-8%
Ammonium acetate 5-7%
Water 60-68%
The production technology of this formaldehyde eliminating agent comprises the steps:
(1) get the raw materials ready according to following weight percentages,
Sodium carbonate 20-25%
Ammonium chloride 2-3%
Urea 5-8%
Ammonium acetate 5-7%
Water 60-68%
(2) ammonium acetate and the urea with above-mentioned weight adds in the reactor, adds the water of above-mentioned weight again, starts agitator, evenly is stirred to dissolving fully;
(3) add the ammonium chloride and the sodium carbonate of above-mentioned weight again, and proceed to stir, being stirred to does not have till the foam appearance;
(4) discharging then after filtration, is promptly made formaldehyde eliminating agent.
Formaldehyde eliminating agent of the present invention is and the stable compound of free formaldehyde be combined into to reach the purpose of eliminating free formaldehyde.
Advantage of the present invention is:
1, product of the present invention can be eliminated airborne free formaldehyde rapidly.Particularly the finishing house in, the free of air concentration of formaldehyde exceeds standard, move in the back human body is caused discomfort, spray processing with product of the present invention after, the room air free formaldehyde rapidly disappears, and reaches national room air standard.
2, product of the present invention can be as the post processing of wood-based plate.Reduce the burst size of methanal of sheet material, as glued board, particieboard, floor etc. are sprayed through the surface, the burst size of methanal of sheet material reaches environmental protection requirement.
3, product of the present invention adds in the Lauxite, also can reach the effect that reduces free formaldehyde.
4, use the present invention that all kinds of wood-based plates are carried out post processing, need not increase any equipment investment.
5, the storage period of product of the present invention is longer.
The specific embodiment
(1) get the raw materials ready according to following weight percentages:
23 kilograms in sodium carbonate
1.5 kilograms of ammonium chlorides
6.5 kilograms in urea
6 kilograms of ammonium acetates
63 kilograms in water
(2) 6 kilograms ammonium acetate and 6.5 kilograms urea are added in the reactor, add 63 kilograms water again, start agitator, evenly be stirred to dissolving fully.
(3) when above solution is transparent and homogeneous liquid, add 1.5 kilograms ammonium chloride, 23 kilograms sodium carbonate, continue to stir, kept 10-20 minute.
(4) occur if any foam, continue again to stir 5-10 minute.Discharging then, after filtration, packing is promptly made product of the present invention.
The formaldehyde eliminating agent that technology according to the present invention is made can reach following technical indicator:
1, outward appearance: transparent homogeneous liquid.
2, solids content: 35 ± 2%.
3, pH value: 6-8.
Following experimental example is used for illustrating effect of the present invention.
Experimental example 1
Indoor free formaldehyde concentration height behind finishing, penetrating odor is big, at this moment indoor can not moving in.Do preliminary treatment with product of the present invention:
Handling the interior air concentration of formaldehyde of cup is 1.6mg/m
3
The amount of spraying is 25ml/m during processing
3
Handling back room air concentration of formaldehyde is＜0.08mg/m
3
Experimental example 2
Use multi-layer sheet (7 layers of glued board), spray product of the present invention at plate face (two sides and periphery), then the burst size of methanal of check-out console (drier method).The plate burst size of methanal of testing result and contrast compares, and the result is as follows:
| Test sample | Quantity for spray (g/m 2) | Burst size of methanal (mg/L) |
| Spray product multi-layer sheet of the present invention and do not spray product multi-layer sheet of the present invention | 100 - | 0.4 5.9 |
Claims (2)
1, a kind of formaldehyde eliminating agent is characterized in that: this formaldehyde eliminating agent is by following weight percentages, and is made through copolymerizing and blending,
Sodium carbonate 20-25%
Ammonium chloride 2-3%
Urea 5-8%
Ammonium acetate 5-7%
Water 60-68%.
2, the production technology of the described formaldehyde eliminating agent of a kind of claim 1, it is characterized in that: this production technology comprises the steps:
(1) get the raw materials ready according to following weight percentages,
Sodium carbonate 20-25%
Ammonium chloride 2-3%
Urea 5-8%
Ammonium acetate 5-7%
Water 60-68%,
(2) ammonium acetate and the urea with above-mentioned weight adds in the reactor, adds the water of above-mentioned weight again, starts agitator, evenly is stirred to dissolving fully;
(3) add the ammonium chloride and the sodium carbonate of above-mentioned weight again, and proceed to stir, being stirred to does not have till the foam appearance;
(4) discharging then after filtration, is promptly made formaldehyde eliminating agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01140051XA CN1180859C (en) | 2001-11-22 | 2001-11-22 | Formaldehyde eliminating agent and its production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB01140051XA CN1180859C (en) | 2001-11-22 | 2001-11-22 | Formaldehyde eliminating agent and its production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1421255A CN1421255A (en) | 2003-06-04 |
| CN1180859C true CN1180859C (en) | 2004-12-22 |
Family
ID=4675618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB01140051XA Expired - Lifetime CN1180859C (en) | 2001-11-22 | 2001-11-22 | Formaldehyde eliminating agent and its production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1180859C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384601C (en) * | 2006-03-07 | 2008-04-30 | 北京林业大学 | For maldehyde eliminating agent and prepn. process thereof |
| CN101011623B (en) * | 2007-02-06 | 2010-10-13 | 江苏飞翔化工股份有限公司 | Formaldehyde removing agent composition |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100507149C (en) * | 2005-06-09 | 2009-07-01 | 叶殷如 | Paper or cloth for removing formaldehyde and indoor organic volatile matter |
| CN100420723C (en) * | 2006-03-30 | 2008-09-24 | 浙江林学院 | Free formaldehyde trapping agent and process for preparing same |
| CN102247746B (en) * | 2011-07-18 | 2013-03-20 | 哈尔滨工程大学 | Formaldehyde elimination agent and preparation method thereof |
| CN103739804B (en) * | 2013-12-25 | 2015-10-07 | 重庆建峰浩康化工有限公司 | The scavenging agent of etherified amino resins Free-formaldehyde and using method thereof |
| CN106799000A (en) * | 2017-01-24 | 2017-06-06 | 南京双全科技有限公司 | Except formaldehyde effervescent tablet and preparation method thereof |
| CN108393998A (en) * | 2018-03-16 | 2018-08-14 | 广东始兴县华洲木业有限公司 | A kind of application of efficient and environment-friendly type artificial board formaldehyde agent for capturing in particieboard production |
-
2001
- 2001-11-22 CN CNB01140051XA patent/CN1180859C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100384601C (en) * | 2006-03-07 | 2008-04-30 | 北京林业大学 | For maldehyde eliminating agent and prepn. process thereof |
| CN101011623B (en) * | 2007-02-06 | 2010-10-13 | 江苏飞翔化工股份有限公司 | Formaldehyde removing agent composition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1421255A (en) | 2003-06-04 |
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| C06 | Publication | ||
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| GR01 | Patent grant | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20100526 Granted publication date: 20041222 Pledgee: Kinlinker communication with Company limited by guarantee Pledgor: Wang Yi Registration number: 200501249 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Formaldehyde eliminating agent and its production process Effective date of registration: 20100526 Granted publication date: 20041222 Pledgee: Beijing SME credit re Company limited by guarantee Pledgor: Wang Yi Registration number: 2010990000765 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20110621 Granted publication date: 20041222 Pledgee: Beijing SME credit re Company limited by guarantee Pledgor: Wang Yi Registration number: 2010990000765 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Tianwei Baochen Chemical Product Co., Ltd. Assignor: Wang Yi Contract record no.: 2011110000072 Denomination of invention: Formaldehyde eliminating agent and its production process Granted publication date: 20041222 License type: Exclusive License Open date: 20030604 Record date: 20110704 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Formaldehyde eliminating agent and its production process Effective date of registration: 20171205 Granted publication date: 20041222 Pledgee: Beijing Chongxin agricultural investment microfinance Limited by Share Ltd Pledgor: Wang Yi Registration number: 2017990001116 |
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| CX01 | Expiry of patent term |
Granted publication date: 20041222 |