CN109423106A - Formaldehyde additive and production method in a kind of paint-removing - Google Patents
Formaldehyde additive and production method in a kind of paint-removing Download PDFInfo
- Publication number
- CN109423106A CN109423106A CN201710584968.7A CN201710584968A CN109423106A CN 109423106 A CN109423106 A CN 109423106A CN 201710584968 A CN201710584968 A CN 201710584968A CN 109423106 A CN109423106 A CN 109423106A
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- China
- Prior art keywords
- paint
- formaldehyde
- additive
- production method
- further characterized
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/08—Polyesters modified with higher fatty oils or their acids, or with natural resins or resin acids
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses formaldehyde additive and production methods in a kind of paint-removing, it is characterised in that can be directly appended to use in paint.The physicochemical property of paint is neither influenced, and can be acted synergistically with having painted, the free formaldehyde in various furniture is removed.
Description
Technical field
The present invention relates to formaldehyde additive and production methods in a kind of paint-removing.
Background technique
For a long time, with the increase of wood-based plate volume of production and marketing, incident formaldehyde pollution is always to fit up in use
One of could not solve the problems, such as.It is new due to having used a large amount of artificial board and various art material adhesive in fitment process
Various harmful penetrating odors are unavoidable in the room of finishing.With the improvement of people's environmental awareness, health perception adds
By force, the requirement to indoor environment after finishing is also higher and higher.It is new research shows that the harm of formaldehyde be far more than stimulation nose and
Eyes, the contact harm of long-time low dosage is bigger, and the harm to old man and children and pregnant woman is still serious.And wood-based plate
It is a large amount of to use, although having saved the forest reserves, the utilization rate of timber is improved, the processing performance of product is again good, and bring is negative
The problem of face sound is exactly Form aldehyde release, the problem of still remaining Form aldehyde release present environment-friendly and green wood-based plate,
Only burst size is slightly lower.
Summary of the invention
Formaldehyde additive and production method in a kind of paint-removing of the present invention, can fundamentally solve artificial board and be in
Formaldehyde pollution problem in tool production.The present invention achieves the goal in the following manner.
Paint is the last necessary process together of all finishings especially art material plate finishing.Therefore selection is in this step
The removing for carrying out the pollution of the formaldehyde in wood furniture can play a multiplier effect.When the free formaldehyde in plate is past
When outer release, encounters in paint film and remove formaldehyde additive, formaldehyde will be absorbed by complete capture to be removed, without being discharged into people
In the indoor environment of inhabitation.Meanwhile paint itself forms one layer of hydrophobic macromolecule membrane on the surface of plate, prevents water
Point further permeated in plate, delayed aging of the plate in storage use process again from another point of view, wood-based plate it is old
Change is exactly the aging of the urea-formaldehyde glue or phenol glue etc. that use when producing wood-based plate after all, and the aging of glue can constantly occur
The macromolecule chain break of formation, releases formaldehyde.Therefore paint except formaldehyde additive be added to oil add in use, neither
The physicochemical property of paint is influenced, and can be acted synergistically with having painted, the free formaldehyde in various furniture is removed.Below in conjunction with this
The present invention is described further for the embodiment of invention.
Embodiment one；
It taking 28 parts of urea, 22 parts of thiocarbamide, is added 26 parts of ethyl alcohol, 24 parts of ethyl acetate, being fully ground makes it at paste shape,
This paint removes formaldehyde additive.
Embodiment two:
20 parts of urea are taken, 70 parts of melamine, 90% 100 parts of malonic acid diethylene glycol (DEG) ester is added in 85% 25 parts of ethyl alcohol, and grinding adds
It is to paint except formaldehyde additive that heat, which is dissolved into uniform solution to its whole after 50 DEG C, 3 hours,.
Embodiment three；
It takes paint described in the present embodiment one except 60 parts of formaldehyde additive, is directly added into 250 parts of deployed alkyd paints as required
In, the surface and end face that 15 block sizes are the common commercially available glued board of 15cm × 5cm × 0.7cm are directly brushed to after mixing well, this is
Test group.Blank control group (normal plywood without paint processing) is set simultaneously and does not add paint except formaldehyde adds
The control group (carry out japanning processing with same paint, but do not add paint except formaldehyde additive) of agent, three groups of samples are same
An equal amount of commercially available glued board of sample quantity.Test group and control group paint one coat, wait paint it is dry after with blank control group
The measurement of free formaldehyde content is carried out together, and the measuring method of free formaldehyde is by specified in national standard GB/T 17657-1999
Condensed steam water carries out for 24 hours.As a result blank group burst size of methanal is the 12.3mg/L (burst size of methanal of E2 grades of offset plates of national regulations
For≤5mg/L), and test control group is 5.8mg/L, and test group is only 0.3mg/L (E1 step Form aldehyde release as defined in China
Amount is≤1.5mg/L, and Japanese F1 step burst size of methanal is≤0.5mg/L).
Example IV: it takes paint described in the present embodiment two except 1000 parts of formaldehyde additive, is added to 6500 parts by paint
In the deployed Polyester Paint of formulation requirements, the chifforobe for directly being painted made with core-board and glued board etc. afterwards is mixed well,
Wardrobe size is 2.5m × 4m × 0.8m, and totally three, three sizes that are placed in are 12 square metres of room.By embodiment three
Method test group, test control group and control group are handled, wait paint it is dry after by closed two hours of three rooms after,
The measurement of the concentration of formaldehyde in room air is directly carried out with direct-reading air formaldehyde analyzer, as a result blank group concentration of formaldehyde
For 0.67ppm, control group 0.39ppm, and test group is only that 0.03ppm (is significantly less than first in the room air of national regulations
The Environmental Protection Level 0.08mg/m of aldehyde3).It paints one time and paints again to test control group, still carry out first of dissociating in air by upper method
The measurement of aldehyde, result 0.21ppm.
Claims (6)
1. formaldehyde additive and production method in a kind of paint-removing, it is characterised in that can be directly appended to use in paint.
2. formaldehyde additive and production method in paint-removing as described in claim 1, it is further characterized in that the additive by
Composition and the solvent composition that can be reacted at room temperature with formaldehyde.
3. formaldehyde additive and production method in the paint-removing as described in claim 1 and 2, it is further characterized in that paint removes first
The composition that can be reacted with formaldehyde in aldehyde additive includes urea, ammonium salt class, thiocarbamide, melamine, ethylene urea, double cyanogen
Ammonia, biuret, they can be used alone or several are used cooperatively.
4. formaldehyde additive and production method in the paint-removing as described in claim 1 and 2, it is further characterized in that paint removes first
Solvent in aldehyde additive can be alcohols, esters and organic acid, they can be used alone or several are used cooperatively.
5. formaldehyde additive and production method in paint-removing as described in claim 1, it is further characterized in that the additive is in room
The lower composition that can be reacted with formaldehyde of temperature, total amount is 10%-90% when being used alone or being used cooperatively, preferably 25%-
Between 55%, solvent is used alone or several amounts being used cooperatively are 91%-11%, between preferably 70% -35%.
6. formaldehyde additive and production method in the paint-removing as described in claim 1 and 5, it is further characterized in that will be in room temperature
The lower component that can be reacted with formaldehyde, which is added, to be fully ground into paste in the desired amount of solvent or makes it dissolve into uniform shape
State can be heated suitably during grinding or dissolution, and temperature is controlled at 25 DEG C -100 DEG C, preferably at 55 DEG C -65 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710584968.7A CN109423106A (en) | 2017-07-18 | 2017-07-18 | Formaldehyde additive and production method in a kind of paint-removing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710584968.7A CN109423106A (en) | 2017-07-18 | 2017-07-18 | Formaldehyde additive and production method in a kind of paint-removing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109423106A true CN109423106A (en) | 2019-03-05 |
Family
ID=65497640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710584968.7A Pending CN109423106A (en) | 2017-07-18 | 2017-07-18 | Formaldehyde additive and production method in a kind of paint-removing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109423106A (en) |
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2017
- 2017-07-18 CN CN201710584968.7A patent/CN109423106A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190305 |