CN100420723C - Free formaldehyde trapping agent and process for preparing same - Google Patents
Free formaldehyde trapping agent and process for preparing same Download PDFInfo
- Publication number
- CN100420723C CN100420723C CNB2006100750465A CN200610075046A CN100420723C CN 100420723 C CN100420723 C CN 100420723C CN B2006100750465 A CNB2006100750465 A CN B2006100750465A CN 200610075046 A CN200610075046 A CN 200610075046A CN 100420723 C CN100420723 C CN 100420723C
- Authority
- CN
- China
- Prior art keywords
- urea
- free formaldehyde
- trapping agent
- raw materials
- weight
- 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.)
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 18
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004202 carbamide Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 12
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 9
- 229920001807 Urea-formaldehyde Polymers 0.000 claims abstract description 7
- 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 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000853 adhesive Substances 0.000 claims abstract description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 5
- -1 PH=7.0-7.5 Substances 0.000 claims description 3
- 238000005304 joining Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 abstract 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 239000012295 chemical reaction liquid Substances 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 150000001299 aldehydes Chemical class 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000005996 Blood meal Substances 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical class OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 2
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 2
- 244000046052 Phaseolus vulgaris Species 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920003987 resole Polymers 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 1
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention relates to a preparation method for a free formaldehyde trapping agent. The present invention is characterized in that the free formaldehyde trapping agent is prepared from the following raw materials: 90 to 110 portions by weight of phosphoric acid, 55 to 75 portions by weight of urea, 55 to 75 portions by weight of water and 0.05 to 0.15 portion by weight of catalyst. The preparation method comprises the following steps: firstly, all prepared phosphoric acid and all prepared urea are added in a reaction kettle to be stirred; then the catalyst is added, and water equal to the urea measured by weight portion is simultaneously added to be heated to 120 to 130 DEG C, and heat is preserved; when a pH value of a reaction liquid is from 6.0 to 6.5, temperature naturally drops to at most 40 DEG C, and a pH value is regulated by ammonia water to obtain the free formaldehyde trapping agent. The trapping agent prepared by the method can be widely used for the production of products needing a urea-formaldehyde resin adhesive in timber industry, etc.; the trapping agent has the advantages of easy acquirement of raw materials, simple preparation method, low cost and high rate of formaldehyde removal.
Description
Technical field
The invention belongs to bamboo and wood, the bonding production method of using the catching agent for free formaldehyde of urea-formaldehyde resin of paper product.
Background technology
Urea-formaldehyde resin is widely used in timber industry, inexpensive with it, bonding strength is high, production technique is simple, cost is low welcome, but all can release formaldehyde in aging in the raw material of this glue before production, when producing in the condensation of methylol, after using, be free state, serious environment pollution is detrimental to health.Extensive and deep research has been carried out at the content that reduces free formaldehyde, removing free formaldehyde in countries in the world.CN93121419 discloses " catching agent for free formaldehyde and production technique thereof " patented technology of Mr. of Liu Ding, with urea, bean powder, blood meal, gelatin, resol etc. is raw material, it is mould to produce urea in copolymerizing and blending, add emulsifying agent and form microcapsule, the removing of PARA FORMALDEHYDE PRILLS(91,95) also has positive effect, but bean powder, blood meal, gelatin easily produce and go mouldy, and causes the variation of color and luster and smell, the adding of resol will influence the stability of urea glue and make color curved dark, and production cost also increases.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of and can overcome above-mentioned defective, technology is simple, with low cost, the aldehyde rate that disappears is high catching agent for free formaldehyde and production method thereof, produce a kind of novel formaldehyde-trapping agent, with urea glue with mixing with being used for eliminating free formaldehyde.
Technical solution of the present invention is: be made up of following raw materials according and weight part thereof: 90-110 part phosphoric acid, 55-75 part urea, 55-75 part water, 0.05-0.15 part are made ethylenediamine tetraacetic acid (EDTA) and/or its sodium salt of catalyzer; Its technical process be earlier will the amount of getting the raw materials ready whole phosphoric acid and whole urea of the amount of getting the raw materials ready add in the reactors, stir, the water that adds catalyzer, adding simultaneously and urea equal weight part again, be heated to 120-130 ℃, insulation, as reaction solution PH=6.0-6.5, be cooled to naturally≤40 ℃, with ammoniacal liquor accent PH=7.0-7.5.
The formaldehyde-trapping agent that aforesaid method is produced, this trapping agent outward appearance is faint yellow or colourless liquid, PH=7.0-7.5, solid content 50 ± 2%, viscosity 13-18 second (being coated with one 4 glasss of mensuration), storage period 〉=3 month.
The formaldehyde-trapping agent that aforesaid method is produced evenly stirs the back with joining with usefulness with 90-110 weight part urea-formaldehyde resin adhesive and this catching agent for free formaldehyde of 4-8 weight part during application in container.
Embodiment
The present invention will now be further detailed embodiment: in the raw material, phosphoric acid and urea are all used technical pure, their more satisfactory mol ratios are 1: 1.05, catalyzer is at least a with ethylenediamine tetraacetic acid (EDTA), disodium ethylene diamine tetraacetate, tetrasodium ethylenediamine tetraacetate, and the amount of adding is the 0.05-0.15% of phosphoric acid and urea add-on sum.For easy to operate raw material and weight part thereof are listed six kinds of embodiment such as following table 1 (wherein ethylenediamine tetraacetic acid (EDTA) is represented with EDTA):
Consult the listed 6 kinds of embodiment of table, now illustrate with embodiment 1: earlier 90 weight parts (hereinafter to be referred as part) phosphoric acid and 55 parts of urea are added reactors, stir, add EDTA and 55 parts of water, be heated to 120-130 ℃, be incubated, when reaction solution PH=6.0-6.5,
Naturally be cooled to≤40 ℃, transfer PH=7.0-7.5 with ammoniacal liquor, blowing is gone into bucket, and this trapping agent is promptly made.
All the other embodiment 2-6 make with embodiment 1 same procedure by each routine parts by weight of raw materials proportioning.Wherein preferential with embodiment 2,5.
With the catching agent for free formaldehyde that present method makes, its outward appearance is faint yellow or colourless liquid, PH7.0-7.5, solid content 50 ± 2%, viscosity 13-18 second (being coated with-4 glasss of mensuration), storage period 〉=3 month.
This trapping agent using method be with urea-formaldehyde resin adhesive with joining with usefulness, the general requirement preparation is finished the back and was used up in 4-8 hour.Proportioning is that urea-formaldehyde resin 90-110 weight part is joined this trapping agent 4-8 weight part, mixes the back thoroughly and uses.Preferred weight part proportioning is 100: 6, and like this, the aldehyde rate that disappears is stated more than 90%.
The present invention has compared to existing technology that raw material is easy to get, technology is simple, with low cost, aldehyde disappears Effective advantage.
Claims (3)
1. catching agent for free formaldehyde production method, it is characterized in that being made up of following raw materials according and weight part thereof: 90-110 part phosphoric acid, 55-75 part urea, 55-75 part water, 0.05-0.15 part are made ethylenediamine tetraacetic acid (EDTA) and/or its sodium salt of catalyzer; Its technical process be earlier will the amount of getting the raw materials ready whole phosphoric acid and whole urea of the amount of getting the raw materials ready add in the reactors, stir, the water that adds catalyzer, adding simultaneously and urea equal weight part again, be heated to 120-130 ℃, insulation, as reaction solution PH=6.0-6.5, be cooled to naturally≤40 ℃, with ammoniacal liquor accent PH=7.0-7.5.
2. the catching agent for free formaldehyde produced of the method for claim 1, during its feature application be outward appearance be faint yellow or colourless liquid, PH=7.0-7.5, solid content 50 ± 2%, with being coated with-4 glasss of mensuration viscosity 13-18 seconds, storage period 〉=3 month.
3. the catching agent for free formaldehyde produced of method according to claim 1, when it is characterized in that using with 90-110 weight part urea-formaldehyde resin adhesive and this catching agent for free formaldehyde of 4-8 weight part in container evenly stirring afterwards with joining with usefulness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100750465A CN100420723C (en) | 2006-03-30 | 2006-03-30 | Free formaldehyde trapping agent and process for preparing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100750465A CN100420723C (en) | 2006-03-30 | 2006-03-30 | Free formaldehyde trapping agent and process for preparing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1827710A CN1827710A (en) | 2006-09-06 |
| CN100420723C true CN100420723C (en) | 2008-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100750465A Expired - Fee Related CN100420723C (en) | 2006-03-30 | 2006-03-30 | Free formaldehyde trapping agent and process for preparing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100420723C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101352649A (en) * | 2008-06-20 | 2009-01-28 | 诸城市良丰化学有限公司 | Technique for producing formaldehyde scavenger resin |
| CN102154825B (en) * | 2011-01-26 | 2012-07-04 | 柳志明 | Formaldehyde exterminator for textile fabrics and preparation and application methods thereof |
| CN106217524A (en) * | 2016-07-29 | 2016-12-14 | 上海轩颂建筑科技有限公司 | A kind of preparation method of environment-friendly and high-performance bamboo flooring |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002273145A (en) * | 2001-03-15 | 2002-09-24 | Mariko Koizumi | Formaldehyde scavenger, method for treating woody plate, and woody plate |
| CN1421255A (en) * | 2001-11-22 | 2003-06-04 | 王�义 | Formaldehyde eliminating agent and its production process |
| CN1463753A (en) * | 2002-06-11 | 2003-12-31 | 成都航利生物材料研究所 | Novel methylene oxide scavenging agent |
| CN1583226A (en) * | 2004-05-25 | 2005-02-23 | 王诚德 | Formol collecting agent and preparing method thereof |
| JP2006062157A (en) * | 2004-08-26 | 2006-03-09 | Nippon Kasei Chem Co Ltd | Formaldehyde trapping agent |
-
2006
- 2006-03-30 CN CNB2006100750465A patent/CN100420723C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002273145A (en) * | 2001-03-15 | 2002-09-24 | Mariko Koizumi | Formaldehyde scavenger, method for treating woody plate, and woody plate |
| CN1421255A (en) * | 2001-11-22 | 2003-06-04 | 王�义 | Formaldehyde eliminating agent and its production process |
| CN1463753A (en) * | 2002-06-11 | 2003-12-31 | 成都航利生物材料研究所 | Novel methylene oxide scavenging agent |
| CN1583226A (en) * | 2004-05-25 | 2005-02-23 | 王诚德 | Formol collecting agent and preparing method thereof |
| JP2006062157A (en) * | 2004-08-26 | 2006-03-09 | Nippon Kasei Chem Co Ltd | Formaldehyde trapping agent |
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| Publication number | Publication date |
|---|---|
| CN1827710A (en) | 2006-09-06 |
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| 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 | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111221 Address after: 311300 No. 63 East Road, Zhejiang, Ling'an Patentee after: Zhejiang A & F University Address before: 311300 School of engineering, Zhejiang Forestry University, No. 88 Ring North Road, Jincheng Town, Zhejiang, Ling'an Patentee before: Zhejiang Forestry University |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080924 Termination date: 20130330 |