CN106110987A - A kind of device of continuous production melamine resin - Google Patents
A kind of device of continuous production melamine resin Download PDFInfo
- Publication number
- CN106110987A CN106110987A CN201610637550.3A CN201610637550A CN106110987A CN 106110987 A CN106110987 A CN 106110987A CN 201610637550 A CN201610637550 A CN 201610637550A CN 106110987 A CN106110987 A CN 106110987A
- Authority
- CN
- China
- Prior art keywords
- chuck
- melamine resin
- die heater
- continuous production
- preset temperature
- 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.)
- Granted
Links
- 229920000877 Melamine resin Polymers 0.000 title claims abstract description 38
- 239000004640 Melamine resin Substances 0.000 title claims abstract description 34
- 238000010924 continuous production Methods 0.000 title claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 13
- 230000003068 static effect Effects 0.000 claims abstract description 8
- 239000002671 adjuvant Substances 0.000 claims abstract description 7
- 239000003513 alkali Substances 0.000 claims abstract description 7
- 229930040373 Paraformaldehyde Natural products 0.000 claims abstract description 6
- 229920002866 paraformaldehyde Polymers 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000007530 organic bases Chemical class 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 235000015424 sodium Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
- B01F33/821—Combinations of dissimilar mixers with consecutive receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
- B01F33/823—Combinations of dissimilar mixers in two or more alternative mixing receptacles, e.g. mixing in one receptacle and dispensing from another receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/834—Mixing in several steps, e.g. successive steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
-
- 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
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with substituted triazines
- C08G12/32—Melamines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/2805—Mixing plastics, polymer material ingredients, monomers or oligomers
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
The present invention discloses the device of a kind of continuous production melamine resin, belong to technical field of chemical, including the mixture feed bin being sequentially connected with, product pump, the first screw machine, static mixer and the second screw machine, described mixture feed bin is connected with tripolycyanamide high compartment and paraformaldehyde high compartment respectively, the feed end of described first screw machine arranges alkali liquor charging aperture, and feed end, intermediate ends or the end of described first screw rod are provided with adjuvant charging aperture.Raw material availability is high, energy consumption is low, yield is high during producing melamine resin for the process units of the present invention, without three wastes generation, can be with the stable melamine resin of the continuous print quality of production, and the product quality of melamine resin is good.
Description
Technical field
The present invention relates to technical field of chemical, particularly to the dress of a kind of continuous production melamine resin
Put.
Background technology
Melamine resin, also known as melamine resin (melamine-formaldehyde resin), melamine formaldehyde (MF) tree
Fat, is the polymer obtained by tripolycyanamide reacts with formaldehyde.Crosslinking reaction during machine-shaping, goods are insoluble thermosetting
Property resin.The most often it and Lauxite are referred to as amino resins.
Melamine resin can be made into melamino-formaldehyde foam through foamable reaction, and this foam is nonflammable, water-fast, heat-resisting,
Electric arc ageing-resistant, resistance to, resistance to chemical attack, there is good insulating properties, glossiness and mechanical strength, the most also there is good suction
Audio fruit.Therefore, it is widely used in building, the automobile even sound-absorbing and flame-retardant of aircraft carrier, submarine etc..
At present, existing melamine resin produces main employing batch production method, and the capital equipment of the method is reaction
Still, the production cycle is long, and prepared product viscosity is big.
Summary of the invention
The present invention provides the device of a kind of continuous production melamine resin, solves existing melamine resin and prepared
The discontinuous problem of journey.
For solving above-mentioned technical problem, the technical scheme is that
A kind of device of continuous production melamine resin, including the mixture feed bin being sequentially connected with, product pump,
One screw machine, static mixer and the second screw machine, described mixture feed bin respectively with tripolycyanamide high compartment and paraformaldehyde
High compartment connects, and the feed end of described first screw machine arranges alkali liquor charging aperture, the feed end of described first screw rod, intermediate ends or
End is provided with adjuvant charging aperture.
Wherein it is preferred to, the cylinder of described first screw machine is outside equipped with four sections of chucks, the respectively first chuck, second
Chuck, the 3rd chuck, the 4th chuck, described first chuck, described second chuck, described 3rd chuck, described 4th chuck divide
It is not connected with four die heaters.
Wherein it is preferred to, the die heater preset temperature being connected with described first chuck is 80～110 DEG C, with described second
Chuck connect die heater preset temperature be 95～150 DEG C, the die heater preset temperature being connected with described 3rd chuck be 100～
160 DEG C, the die heater preset temperature being connected with described 4th chuck is 90～140 DEG C.Wherein it is preferred to, described second screw rod
The cylinder of machine is outside equipped with the 5th chuck, is connected with protecting die heater.
Wherein it is preferred to, the die heater preset temperature being connected with described second screw machine is 65～95 DEG C.
Wherein it is preferred to, it is respectively arranged with the 6th chuck, the 7th chuck and the 8th chuck outside described second screw machine, point
Not being connected with die heater, the preset temperature of the die heater being connected with described 6th chuck is 100～90 DEG C, with described 7th chuck
The preset temperature of the die heater connected is 90～80 DEG C, and the preset temperature of the die heater being connected with described 8th chuck is 80～70
℃。
Wherein it is preferred to, the material time of staying in described first screw machine is 5～10min.
Wherein it is preferred to, the material time of staying in described second screw machine is 25～45min.
Wherein it is preferred to, the cylinder of described static mixer is outside equipped with the 9th chuck, is connected with described 9th chuck
The preset temperature of die heater is 100～120 DEG C.
Beneficial effects of the present invention:
1. the process units of present invention raw material availability during producing melamine resin is high, energy consumption is low,
Yield is high, without three wastes generation, can be with the stable melamine resin of the continuous print quality of production, and melamine resin
Product quality good.Continuity of production process the most of the present invention is good, and action required personnel are few, and automaticity is high.
3. use process units of the present invention with short production cycle, constant product quality.
4. use process units production process safety of the present invention.
Process units simple in construction the most of the present invention, small investment, occupation of land are few.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation that embodiment 1 prepares melamine resin device；
Fig. 2 is the structural representation that embodiment 2 prepares melamine resin device.
In figure, 1. mixture feed bin, 2. product pump, 3. the first screw machine, 4. the second screw machine, 5. tripolycyanamide is high-order
Storehouse, 6. paraformaldehyde high compartment, 7. alkali liquor charging aperture, 8. adjuvant charging aperture, 9. the first chuck, 10. the second chuck, 11. the 3rd
Chuck, 12. the 4th chucks, 13. the 5th chucks, 14. die heaters, 15. the 6th chucks, 16. the 7th chucks, 17. the 8th chucks,
18. static mixers, 19. the 9th chucks
Detailed description of the invention
Below the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment
It is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the common skill in this area
The every other embodiment that art personnel are obtained under not making creative work premise, broadly falls into the model of present invention protection
Enclose.
Embodiment 1
As it is shown in figure 1, the present embodiment provides the device of a kind of continuous production melamine resin, including being sequentially connected with
Mixture feed bin 1, product pump the 2, first screw machine 3, static mixer 18 and the second screw machine 4, mixture feed bin 1 respectively with
Tripolycyanamide high compartment 5 and paraformaldehyde high compartment 6 connect, and arrange alkali liquor charging aperture 7 at the charging of the first screw machine 3, and first
The end of screw rod is provided with adjuvant charging aperture 8.When using the present embodiment to prepare melamine resin, tripolycyanamide is powder, poly first
Aldehyde is particulate material, the solvent of reaction be at the charging of the first screw machine 3 add alkali liquor, wherein, alkali liquor be mass ratio be 0.2
～0.5% organic base or the aqueous solution of inorganic base.The adjuvant added is one or more inorganic sodiums.Use setting of the present embodiment
Standby, powdery tripolycyanamide and graininess paraformaldehyde mix homogeneously in mixture feed bin 1 before the reaction, mixture feed bin 1 is protected
Demonstrate,prove material uniform feeding the most in proportion.Adjuvant charging aperture 8 can also be arranged on the first screw machine 3 feed end or in
Between position.
Wherein, the cylinder of the first screw machine 3 is outside equipped with four sections of chucks, respectively first chuck the 9, second chuck 10,
Three chuck the 11, the 4th chucks 12, first chuck the 9, second chuck the 10, the 3rd chuck the 11, the 4th chuck 12 respectively with four Tai Mowen
Machine 14 connects.Die heater 14 preset temperature being connected with the first chuck 9 is 100～110 DEG C, the mould temperature being connected with the second chuck 10
Machine 14 preset temperature is 110～120 DEG C, and die heater 14 preset temperature being connected with the 3rd chuck 11 is 120～130 DEG C, with
Die heater 14 preset temperature that four chucks 12 connect is 130～140 DEG C.Four sections of chucks are set, make material protect in the different time
Holding different temperature, being more beneficial for reacting balance has the carrying out of control.
Adjust the rotating speed of the screw rod of the first screw machine 3, make the material time of staying in the first screw machine 3 be 5～
10min。
Wherein, the cylinder of the second screw machine 4 is outside equipped with the 5th chuck 13, is connected, with the second screw rod with protecting die heater 14
The die heater preset temperature that machine 4 connects is 65～95 DEG C.
Adjust the rotating speed of the screw rod of the second screw machine 4, make the material time of staying in the second screw machine 4 be 25～
45min。
The cylinder of static mixer 18 is outside equipped with the 9th chuck 19, the die heater being connected with described 9th chuck 19 pre-
If temperature is 100～120 DEG C.Being provided with static mixer between first screw machine and the second screw machine, material is at the first screw rod
Push ahead under the effect of machine thrust, during pushing ahead, reach good dispersion between different fluid and fully mix
The purpose closed.
The device producing continuously melamine resin of the present embodiment can be with the stable melamine of the continuous print quality of production
Resin, and the product quality of melamine resin is good.
Embodiment 2
As in figure 2 it is shown, the present embodiment provides the device of a kind of continuous production melamine resin, in the present embodiment,
It is respectively arranged with the 6th chuck the 15, the 7th chuck 16 and the 8th chuck 17 outside described second screw machine, is connected with die heater respectively,
The preset temperature of the die heater being connected with described 6th chuck 15 is 100～90 DEG C, the mould temperature being connected with described 7th chuck 17
The preset temperature of machine 14 is 90～80 DEG C, and the preset temperature of the die heater being connected with described 8th chuck 18 is 80～70 DEG C.
Other structure of the device producing melamine resin continuously of the present embodiment is the most same as in Example 1,
This repeats no more.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (9)
1. the device of a continuous production melamine resin, it is characterised in that: the mixture feed bin that includes being sequentially connected with,
Product pump, the first screw machine, static mixer and the second screw machine, described mixture feed bin respectively with tripolycyanamide high compartment and
Paraformaldehyde high compartment connects, and the feed end of described first screw machine arranges alkali liquor charging aperture, the feed end of described first screw rod,
Intermediate ends or end are provided with adjuvant charging aperture.
The device of a kind of continuous production melamine resin the most according to claim 1, it is characterised in that: described
The cylinder of one screw machine is outside equipped with four sections of chucks, and the respectively first chuck, the second chuck, the 3rd chuck, the 4th chuck are described
First chuck, described second chuck, described 3rd chuck, described 4th chuck are connected with four die heaters respectively.
The device of a kind of continuous production melamine resin the most according to claim 2, it is characterised in that: with described
The die heater preset temperature that first chuck connects is 80～110 DEG C, and the die heater preset temperature being connected with described second chuck is
95～150 DEG C, the die heater preset temperature being connected with described 3rd chuck is 100～160 DEG C, is connected with described 4th chuck
Die heater preset temperature is 90～140 DEG C.
The device of a kind of continuous production melamine resin the most according to claim 1, it is characterised in that: described
The cylinder of two screw machines is outside equipped with the 5th chuck, is connected with protecting die heater.
The device of a kind of continuous production melamine resin the most according to claim 5, it is characterised in that: with described
The die heater preset temperature that second screw machine connects is 65～95 DEG C.
The device of a kind of continuous production melamine resin the most according to claim 1, it is characterised in that: described
It is respectively arranged with the 6th chuck, the 7th chuck and the 8th chuck outside two screw machines, is connected with die heater respectively, with described 6th folder
The preset temperature of the die heater that set connects is 100～90 DEG C, and the preset temperature of the die heater being connected with described 7th chuck is 90
～80 DEG C, the preset temperature of the die heater being connected with described 8th chuck is 80～70 DEG C.
The device of a kind of continuous production melamine resin the most according to claim 1, it is characterised in that: material exists
The time of staying in described first screw machine is 5～10min.
The device of a kind of continuous production melamine resin the most according to claim 1, it is characterised in that: material exists
The time of staying in described second screw machine is 25～45min.
The device of a kind of continuous production melamine resin the most according to claim 1, it is characterised in that: described quiet
The cylinder of state blender is outside equipped with the 9th chuck, and the preset temperature of the die heater being connected with described 9th chuck is 100～120
℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610637550.3A CN106110987B (en) | 2016-08-02 | 2016-08-02 | A kind of device of continuous production melamine resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610637550.3A CN106110987B (en) | 2016-08-02 | 2016-08-02 | A kind of device of continuous production melamine resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106110987A true CN106110987A (en) | 2016-11-16 |
| CN106110987B CN106110987B (en) | 2018-11-16 |
Family
ID=57254830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610637550.3A Active CN106110987B (en) | 2016-08-02 | 2016-08-02 | A kind of device of continuous production melamine resin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106110987B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107715777A (en) * | 2017-08-21 | 2018-02-23 | 宁波中金石化有限公司 | A kind of manufacturing equipment and preparation method of multifunctional modification aromatic hydrocarbons |
| CN111269372A (en) * | 2020-01-17 | 2020-06-12 | 江苏长能节能新材料科技有限公司 | Method for preparing hexamethylol melamine with continuous and stable quality |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4996289A (en) * | 1988-08-25 | 1991-02-26 | Basf Aktiengesellschaft | Continuous preparation of aqueous melamine/formaldehyde precondensate solutions |
| US20090163694A1 (en) * | 2007-12-21 | 2009-06-25 | Michael Gann | Process for the continuous production of high efficient aqueous amino formaldehyde resin solutions |
| CN102838744A (en) * | 2012-10-03 | 2012-12-26 | 上海会博新材料科技有限公司 | Continuous production device for poly-p-phenylene terephthamide resin |
| CN104774427A (en) * | 2015-05-07 | 2015-07-15 | 成都玉龙化工有限公司 | High-density soft melamine foam and preparing method |
-
2016
- 2016-08-02 CN CN201610637550.3A patent/CN106110987B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4996289A (en) * | 1988-08-25 | 1991-02-26 | Basf Aktiengesellschaft | Continuous preparation of aqueous melamine/formaldehyde precondensate solutions |
| US20090163694A1 (en) * | 2007-12-21 | 2009-06-25 | Michael Gann | Process for the continuous production of high efficient aqueous amino formaldehyde resin solutions |
| CN102838744A (en) * | 2012-10-03 | 2012-12-26 | 上海会博新材料科技有限公司 | Continuous production device for poly-p-phenylene terephthamide resin |
| CN104774427A (en) * | 2015-05-07 | 2015-07-15 | 成都玉龙化工有限公司 | High-density soft melamine foam and preparing method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107715777A (en) * | 2017-08-21 | 2018-02-23 | 宁波中金石化有限公司 | A kind of manufacturing equipment and preparation method of multifunctional modification aromatic hydrocarbons |
| CN107715777B (en) * | 2017-08-21 | 2019-10-15 | 宁波中金石化有限公司 | A kind of manufacturing equipment and preparation method of multifunctional modification aromatic hydrocarbons |
| CN111269372A (en) * | 2020-01-17 | 2020-06-12 | 江苏长能节能新材料科技有限公司 | Method for preparing hexamethylol melamine with continuous and stable quality |
| CN111269372B (en) * | 2020-01-17 | 2021-01-12 | 江苏长能节能新材料科技有限公司 | Method for preparing hexamethylol melamine with continuous and stable quality |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106110987B (en) | 2018-11-16 |
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Denomination of invention: A device for continuous production of melamine formaldehyde resin Granted publication date: 20181116 Pledgee: Bank of China Limited Zhengzhou Airport Branch Pledgor: ZHENGZHOU FOAMTECH NANO MATERIAL Co.,Ltd. Registration number: Y2024980034030 |