CN105419555A - Formaldehyde sealant for blockboard - Google Patents
Formaldehyde sealant for blockboard Download PDFInfo
- Publication number
- CN105419555A CN105419555A CN201410489965.1A CN201410489965A CN105419555A CN 105419555 A CN105419555 A CN 105419555A CN 201410489965 A CN201410489965 A CN 201410489965A CN 105419555 A CN105419555 A CN 105419555A
- Authority
- CN
- China
- Prior art keywords
- formaldehyde
- nano
- solvent
- precious
- sealant
- 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
Landscapes
- Paints Or Removers (AREA)
Abstract
The present invention relates to a formaldehyde sealant for a blockboard. The sealant comprises ketone resin, PVB resin, a formaldehyde removing agent, a defoaming agent, a leveling agent and a solvent, wherein the formaldehyde removing agent is a nanocomposite dispersant, the surface of which is treated by purified nano attapulgite/nano sepiolite/nano anion powder. The formaldehyde sealant for the blockboard of an artificial board has a good adhesive force and high sealing property on the board and does not affect recoatability. The formaldehyde sealant can not only seal absorb formaldehyde derived from the blockboard, but can also penetrate into the board interior to capture free formaldehyde, and super strongly adsorbs, captures and removes various harmful gas and odor of formaldehyde, three benzenes and ammonia in the air, meanwhile the formaldehyde sealant has anion ecology and mould killing bacteria, is continuously valid, does not produce secondary pollution, improves an indoor air environment, and widely used for sealing and coating of various blockboard surfaces.
Description
Technical field
The present invention relates to a kind of formaldehyde for woodwork plate closes precious, belongs to functional paint technical field.
Background technology
China's coating output increases to 13,035 ten thousand tons in 2013 from 2004 2,980,000 tons, and increase 4.37 times, wherein solvent based coating accounts for more than 60%; And still account for main flow for the solvent wood coatings of indoor decorating, according to statistics, the output of China's woodwork coating in 2008 is about 800,000 tons, within 2011 years, is 1,060,000 tons, within 2013 years, is 1,230,000 tons.Although aqueous product state of the art is improving constantly, coating circle is not thinking that solvent based product in a foreseeable future can be replaced by aqueous product completely.
Source of pollution in room air are mainly formaldehyde, triphen, halohydrocarbon, ammonia, methyl alcohol etc., wherein the harm of formaldehyde is maximum, mainly from the woodwork plate making furniture use, as: medium density fibre board (MDF), shaving board, glued board, core-board, the tackiness agent that these material work in-processes use is urea-formaldehyde resin and resol, the formaldehyde having neither part nor lot in reaction residual in sheet material can Environment release towards periphery gradually, forms the main body of formaldehyde in indoor air.Usually, people get used to finishing rear venting two months, then move in, but this pollutant release period reaches 15 years most, within two months, just can deal with problems absolutely not, in full summer air-conditioning and severe winter heating installation closed room in, owing to lacking outdoor new wind, its harm is more serious
!
The method removing formaldehyde in the market has: 1, bamboo charcoal, active carbon adsorption, but the adsorptive power of bamboo charcoal, gac is very limited, only some are had to act on to benzene, the adsorption effect of PARA FORMALDEHYDE PRILLS(91,95) is also bad, and there is the saturated problem of absorption, when temperature is low, absorbed dose is relatively large, and temperature raises and can discharge again.
2, formaldehyde scavenger or dissolve formaldehyde enzyme, these " remove " formaldehyde by the method for chemical reaction, the essence of this method target substance is reduced toxicity or is converted into non-toxic substance, formaldehyde can be oxidized to formic acid, also methyl alcohol can be reduced to, the toxicity of these two kinds of materials still exists, and easily causes secondary pollution.Formaldehyde scavenger just forms layer protecting film at source of pollution skin, can only temporary closure source of pollution, and be not resolved on source, after this layer of protective membrane lost efficacy, formaldehyde still can discharge pollution room air in a large number, cures the symptoms, not the disease.
3, photocatalyst method, but photocatalyst will play a role, and have ultraviolet to excite, night and without visible ray without any effect.The particle of photocatalyst is very small in addition, is very easily suspended in air, cannot with the naked eye see just as dust, also cannot discover, easily cause secondary pollution, very likely damage human lung even if suck.Photocatalyst is also had to have the performance of decomposing organic matter matter, to any organism as real leather products, hair grass and high-grade clothes, skin have detrimental effect, and photocatalyst manufacturer avoids all mention of, also human consumer is not informed, as long as even misguide the consumer, photocatalyst has light all right, behavior like this, should be scolded.In fact photocatalyst is to the dusty gas limited efficiency removed in air, therefore sends out
reach countryfew at present they are used as civilian photocatalyst material.
CN101348628A discloses a kind of thick coating material and compound method thereof of tool air-cleaning function, this coating finishing material contains porous adsorbing material and composite photocatalyst material, porous adsorbing material is one or the combination of molecular sieve, sepiolite, attapulgite, diatomite and zeolite, and composite photocatalyst material is nano level TiO
2with the complex body of polar material tourmalinite, or nano level TiO
2with the complex body of the natural micropore mineral materials such as sepiolite, molecular sieve, zeolite.This coating finishing material of the present invention can remove the obnoxious flavour such as formaldehyde in air, toluene, has Environmental Health function, and continuous and effective.But not through the natural micropore mineral material limited sorption capacity of purification processes, also there is photocatalyst technology defect and secondary pollution in this invention.
CN102120910B discloses a kind of environment-friendly solvent type woodwork coating with function of absorbing formaldehyde, comprise three kinds of components, wherein component A is main paint component: natural phant oils synthetic alkyd resin, formaldehyde absorbent, color stuffing, matting agent, dispersion agent, defoamer, flow agent and environmentally friendly solvent; B component is solidifying agent; Component C is diluent; Described formaldehyde absorbent is natural polar mineral material, as silicon-dioxide, aluminium sesquioxide and titanium dioxide, this solvent wood coatings of the present invention can not only close the formaldehyde absorbing and be derived from wood decorative material, and the residual aerial free formaldehyde discharged can be absorbed, reach the object purified the air of a room.But, not through native silicon dioxide, the aluminium sesquioxide limited sorption capacity of purification processes, titanium dioxide be necessary for nano level and particle diameter in≤10nm, competence exertion effect under ultraviolet effect, and also there is secondary pollution in photocatalyst.
Summary of the invention
For the technical problem existed above, formaldehyde of the present invention closes treasured can not only close the formaldehyde absorbing and be derived from woodwork plate, sheet material inside can also be penetrated into and catch free formaldehyde, and the formaldehyde gas function had in superpower absorption, seizure and removal air, and continuous and effective, do not produce secondary pollution.
Formaldehyde of the present invention close treasured select purification after nano level attapulgite/sepiolite powder/negative ion powder a kind of nano composite material obtained by surface treatment be formaldehyde absorbing remover.
Nano-attapulgite of the present invention and Nano sepiolite powder are kind of porous ore deposit eutectic substances, and its microtexture has unique crystal regular texture, and a large amount of nano level hole in crystal, pore size is 2.7 ~ 9.8 Ethylmercurichlorendimides, and micropore surface band polarity.Because the venomous injurant (molecular diameter of formaldehyde, ammonia, triphen, all between 0.4 ~ 0.62 nanometer, is nano level polar compound) such as triphen, formaldehyde, ammonia of nanoscale molecular diameter is optionally adsorbed in its nano level aperture.After curing process, nano-attapulgite and Nano sepiolite powder aperture are at 3 ~ 5 Ethylmercurichlorendimides, have superpower adsorptive power and sustainable function.Described nanometer anion powder has pyroelectricity and piezoelectricity, makes the water of air and oxygen molecule ionization occur and be converted into negative oxygen ion, thus eliminates various obnoxious flavour and the peculiar smell such as formaldehyde, ammonia that evaporate in wood-based plate inside.
In order to reduce the effusion of formaldehyde in wood-based plate, add PVOH butyral (PVB) resin, PVB has good consistency, perviousness and substrate adhesion, sheet material inside can be penetrated into and catch free formaldehyde, can there is chemical reaction in long-term contact, be conducive to the problem that solution formaldehyde discharges lastingly.
In order to solve technical problem recited above, the present invention takes following technical scheme: the present invention relates to a kind of formaldehyde for woodwork plate and close precious, it basic composition is: 60% ketone resin 20% ~ 40%, PVB resin 3% ~ 10%, formaldehyde remover 5% ~ 15%, defoamer 0.1% ~ 0.3%, flow agent 0.1% ~ 0.3%, solvent 40% ~ 70%.
Wherein, described formaldehyde remover is the nano-attapulgite/surface treated nanocomposite dispersions of Nano sepiolite powder/nanometer anion powder after purifying.
Described formaldehyde remover nanocomposite dispersions, its composition is: nano-attapulgite 10% ~ 25%, Nano sepiolite powder 10% ~ 25%, nanometer anion powder 5% ~ 15%, PVB resin 5% ~ 10%, dispersion agent 5% ~ 10%, solvent 50% ~ 70%; Its process of surface treatment is as follows: put into baking oven by formulation weight than by nano-attapulgite, Nano sepiolite powder, nanometer anion powder, and under 100 ~ 110 DEG C of conditions, cure activation 3h, vacuum cooling is to room temperature; In high speed dispersor, add solvent, PVB resin, after stirring and dissolving is even, add dispersion agent, slowly add dried nano composite powder again, high speed dispersion 25 ~ 40min, opens nanometer sand mill circular grinding 10 ~ 12h, through laser fineness gage test median D
50it is qualified to be between 15 ~ 40nm, filters and packages.
Solvent is low poison ring
guarantor's typesolvent, selects one or its combination of N-BUTYL ACETATE, vinyl acetic monomer, 2-butyl acetate, butanols, isopropylcarbinol, methylcarbonate, propylene glycol methyl esters, propylene glycol butyl ester, PMA.
Dispersion agent is selected containing pigment affinity groups segmented copolymer or the multipolymer wetting dispersing agent containing acidic-group, and flow agent selects the one of acrylate copolymer, fluorine richness acrylate copolymer or Siloxane-Oxyalkylene Copolymers polymkeric substance; The one of non-silicon ketofatty acid polymkeric substance, modified polypropene acid polymer, Soxylat A 25-7 selected by defoamer.
It is as follows that a kind of formaldehyde for woodwork plate of the present invention closes precious preparation technology: in high speed dispersor, solvent, ketone resin, PVB resin is added than successively by formulation weight, the formaldehyde remover nanocomposite dispersions made is added after stirring and dissolving is even, stir 20 ~ 30min, flow agent, defoamer is added again by formulation weight ratio, stirring mixes up viscosity, and namely obtained a kind of formaldehyde for woodwork plate is closed precious.
The formaldehyde that the present invention obtains a kind of woodwork plate for wood-based plate is closed precious, and good to the sticking power of sheet material, closure is strong, does not affect recoatability; The formaldehyde absorbing and be derived from woodwork plate can not only be closed, sheet material inside can also be penetrated into and catch free formaldehyde, and there is the formaldehyde in superpower absorption, seizure and removal air, triphen, the various obnoxious flavour of ammonia and peculiar smell, also there is anion ecological, kill bacteria mould simultaneously, and continuous and effective, do not produce secondary pollution, improve indoor air environment, be widely used in the closed application on various woodwork plate surface.
Embodiment
Embodiment 1:
Prepared by formaldehyde remover nanocomposite dispersions: 1,10 parts of nano-attapulgites, 10 parts of Nano sepiolite powder, 10 parts of nanometer anion powders are put into baking oven, and under 105 DEG C of conditions, cure activation 3h, vacuum cooling is to room temperature; In high speed dispersor, add mixed solvent 58 parts, PVB resin 6 parts, dispersion agent 6 parts is added after stirring and dissolving is even, slowly add dried nano composite powder again, high speed dispersion 25 ~ 40min, open nanometer sand mill circular grinding 10 ~ 12h, through laser fineness gage test median D
50it is qualified to be between 15 ~ 40nm, and filtering and packaging i.e. obtained a kind of solid content is the formaldehyde remover nanocomposite dispersions of 30%.
Embodiment 2:
A kind of formaldehyde of the woodwork plate for wood-based plate closes precious preparation: formula consists of: 60% ketone resin 25 parts, PVB resin 8 parts, formaldehyde remover 10 parts, defoamer 0.1 part, flow agent 0.1 part, solvent 56.8 parts; In high speed dispersor, solvent, ketone resin, PVB resin is added than successively by formulation weight, the formaldehyde remover nanocomposite dispersions made is added after stirring and dissolving is even, stir 20 ~ 30min, flow agent, defoamer is added again by formulation weight ratio, stirring mixes up viscosity, stirs i.e. obtained a kind of formaldehyde for woodwork plate and closes precious.
Embodiment 3:
Go formaldehyde performance test: choose nanometer 30%TiO2/ natural sepiolite composite granule (wherein TiO2 accounts for 10%), 30% negative ion powder/silicon dioxide composite powder (wherein negative ion powder accounts for 10%) the formaldehyde remover as a comparison in model paint, the formaldehyde obtained with example 2 of the present invention closes that treasured carries out formaldehyde clearance, decontamination effect improving persistence contrasts.
The preparation of contrast model paint: prepare according to the method for CN102120910B, in coating, formaldehyde remover is 10%.Detect according to JC/T1074-2008 " function of purifying indoor air coating material purifying property " standard method, test result
as table 1, shown in 2.
table 1: the test result (having fluorescent lamp to irradiate) of simultaneous test
| Project | Example 2 | Nano TiO 2 | Nano-negative ion |
| Purifying formaldehyde rate | 92.7％ | 58.6％ | 64.2％ |
| Purifying formaldehyde effect persistence | 80.2％ | 32.6％ | 56.5％ |
table 2: the test result (irradiating without fluorescent lamp) of simultaneous test
| Project | This example | Nano TiO 2 | Nano-negative ion |
| Purifying formaldehyde rate | 91.2％ | 3.6％ | 62.5％ |
| Purifying formaldehyde effect persistence | 76.8％ | 2.5％ | 50.8％ |
By
table 1, 2 to know: the formaldehyde that the present invention obtains close precious to formaldehyde in indoor air, remove clean rate, decontamination effect improving persistence is better than TiO2/ natural sepiolite composite granule, negative ion powder/silicon dioxide composite powder, because formaldehyde of the present invention is closed in treasured containing nano level formaldehyde remover, have superpower absorption, remove the ability of dusty gas, removal efficiency is high and persistence is strong; Not affect formaldehyde in light or unglazed situation and close precious removal function having in addition, and photocatalyst is not having almost not remove function under illumination.
Although the present invention has been explained in detail and has quoted embodiment as proof, for those of ordinary skill in the art, the various schemes obviously can made according to above-mentioned explanation, amendment and change, within the scope that all should be included in claim.
Claims (5)
1. the formaldehyde for woodwork plate is closed precious, it is characterized in that: it basic composition is: 60% ketone resin 20% ~ 40%, PVB resin 3% ~ 10%, formaldehyde remover 5% ~ 15%, defoamer 0.1% ~ 0.3%, flow agent 0.1% ~ 0.3%, solvent 40% ~ 70%; Described formaldehyde remover is the nano-attapulgite/surface treated nanocomposite dispersions of Nano sepiolite powder/nanometer anion powder after purifying.
2. a kind of formaldehyde for woodwork plate is closed precious as claimed in claim 1, it is characterized in that: described formaldehyde remover nanocomposite dispersions, its composition is: nano-attapulgite 10% ~ 25%, Nano sepiolite powder 10% ~ 25%, nanometer anion powder 5% ~ 15%, PVB resin 5% ~ 10%, dispersion agent 5% ~ 10%, solvent 50% ~ 70%; Described process of surface treatment is as follows: put into baking oven by formulation weight than by nano-attapulgite, Nano sepiolite powder, nanometer anion powder, and under 100 ~ 110 DEG C of conditions, cure activation 3h, vacuum cooling is to room temperature; In high speed dispersor, add solvent, PVB resin, after stirring and dissolving is even, add dispersion agent, slowly add dried nano composite powder again, high speed dispersion 25 ~ 40min, opens nanometer sand mill circular grinding 10 ~ 12h, through laser fineness gage test median D
50it is qualified to be between 15 ~ 40nm, filters and packages.
3. a kind of formaldehyde for woodwork plate as described in claim 1,2 is closed precious, it is characterized in that: described dispersion agent is selected containing pigment affinity groups segmented copolymer or the multipolymer wetting dispersing agent containing acidic-group; Described flow agent selects the one of acrylate copolymer, fluorine richness acrylate copolymer or Siloxane-Oxyalkylene Copolymers polymkeric substance; The one of non-silicon ketofatty acid polymkeric substance, modified polypropene acid polymer, Soxylat A 25-7 selected by described defoamer.
4. a kind of formaldehyde for woodwork plate as described in claim 1,2 is closed precious, it is characterized in that: described solvent is low toxic and environment-friendly type solvent, select one or its combination of N-BUTYL ACETATE, vinyl acetic monomer, 2-butyl acetate, butanols, isopropylcarbinol, methylcarbonate, propylene glycol methyl esters, propylene glycol butyl ester, PMA.
5. a kind of formaldehyde for woodwork plate is closed precious as claimed in claim 1, it is characterized in that: described preparation method, its preparation technology is as follows: than successively, solvent, ketone resin, PVB resin are added in high speed dispersor by formulation weight, the formaldehyde remover nanocomposite dispersions made is added after stirring and dissolving is even, stir 20 ~ 30min, add flow agent, defoamer by formulation weight ratio again, stir and mix up viscosity, namely obtained a kind of formaldehyde for woodwork plate is closed precious.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410489965.1A CN105419555B (en) | 2014-09-23 | 2014-09-23 | A kind of formaldehyde for woodwork plate is closed precious |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410489965.1A CN105419555B (en) | 2014-09-23 | 2014-09-23 | A kind of formaldehyde for woodwork plate is closed precious |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105419555A true CN105419555A (en) | 2016-03-23 |
| CN105419555B CN105419555B (en) | 2017-08-22 |
Family
ID=55498110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410489965.1A Active CN105419555B (en) | 2014-09-23 | 2014-09-23 | A kind of formaldehyde for woodwork plate is closed precious |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105419555B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969036A (en) * | 2016-07-11 | 2016-09-28 | 三棵树涂料股份有限公司 | Polishable metal paint and preparation method thereof |
| CN106497337A (en) * | 2016-11-18 | 2017-03-15 | 无锡明盛纺织机械有限公司 | One kind is corrosion resistant to remove formaldehyde aqueous sealing primer |
| CN110354440A (en) * | 2019-07-02 | 2019-10-22 | 襄阳水木南山装饰工程有限公司 | Prevent in a kind of fitting-out work and the method for control formaldehyde pollution |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030171482A1 (en) * | 2002-03-08 | 2003-09-11 | Faber-Castell Ag | Thermoplastic coating material for wood surfaces and in particular for wood-encased pencils |
| CN101348628A (en) * | 2008-09-17 | 2009-01-21 | 中国建筑材料科学研究总院 | Thick coating material purifying air and preparing method thereof |
| CN101508868A (en) * | 2009-03-24 | 2009-08-19 | 临汾铁环漆业有限公司 | Watersoluble closed methanal paint |
| CN102120910A (en) * | 2011-01-24 | 2011-07-13 | 广东嘉宝莉化工集团有限公司 | Environmentally-friendly solvent type woodware coating with formaldehyde-absorbing function and preparation method thereof |
| CN103212368A (en) * | 2013-04-17 | 2013-07-24 | 胡勇 | Multi-functional photocatalyst diatom purification particles and preparation method thereof |
-
2014
- 2014-09-23 CN CN201410489965.1A patent/CN105419555B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030171482A1 (en) * | 2002-03-08 | 2003-09-11 | Faber-Castell Ag | Thermoplastic coating material for wood surfaces and in particular for wood-encased pencils |
| CN101348628A (en) * | 2008-09-17 | 2009-01-21 | 中国建筑材料科学研究总院 | Thick coating material purifying air and preparing method thereof |
| CN101508868A (en) * | 2009-03-24 | 2009-08-19 | 临汾铁环漆业有限公司 | Watersoluble closed methanal paint |
| CN102120910A (en) * | 2011-01-24 | 2011-07-13 | 广东嘉宝莉化工集团有限公司 | Environmentally-friendly solvent type woodware coating with formaldehyde-absorbing function and preparation method thereof |
| CN103212368A (en) * | 2013-04-17 | 2013-07-24 | 胡勇 | Multi-functional photocatalyst diatom purification particles and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105969036A (en) * | 2016-07-11 | 2016-09-28 | 三棵树涂料股份有限公司 | Polishable metal paint and preparation method thereof |
| CN106497337A (en) * | 2016-11-18 | 2017-03-15 | 无锡明盛纺织机械有限公司 | One kind is corrosion resistant to remove formaldehyde aqueous sealing primer |
| CN110354440A (en) * | 2019-07-02 | 2019-10-22 | 襄阳水木南山装饰工程有限公司 | Prevent in a kind of fitting-out work and the method for control formaldehyde pollution |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105419555B (en) | 2017-08-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107446427B (en) | Nano photocatalyst formaldehyde-removing paint and preparation method thereof | |
| CN107903790B (en) | Water-based wood paint with air purification and sterilization functions and preparation method thereof | |
| WO2015027858A1 (en) | Method for supporting nano-titanium dioxide on titanium white powder, and nano-photocatalyst air-purification wall paint | |
| CN103880351A (en) | Environment-friendly composite calcium metasilicate plate and preparation method thereof | |
| CN104446283A (en) | Diatom ooze wall material capable of efficiently purifying air or resisting against bacteria or automatically humidifying and preparation method of diatom ooze wall material | |
| CN107252699B (en) | Photocatalyst microsphere for indoor air purification and light storage and preparation method thereof | |
| CN104946051A (en) | Healthy and environment-friendly building inner wall coating | |
| CN108410285B (en) | Mildew-proof and bactericidal environment-friendly coating | |
| CN105802414A (en) | Preparation method of formaldehyde adsorption water-based environmental protection coating | |
| CN107151941B (en) | Photocatalyst suspension, resist blocking and that automatically cleaning wood-based plate facing paper and preparation method thereof | |
| CN105419555A (en) | Formaldehyde sealant for blockboard | |
| CN105478075A (en) | Air-purifying modified nano-composite material for aqueous system | |
| CN203043841U (en) | Formaldehyde removing device and formaldehyde removing fan | |
| CN107903666A (en) | A kind of filter material is with removing aldehyde mildew resistant paint and preparation method | |
| CN108102489A (en) | A kind of Environmental Protective Water-paint and preparation method thereof | |
| CN105482707A (en) | Formaldehyde-removing waterborne sealing primer used for artificial board | |
| KR102294159B1 (en) | Watersoluble Fire Proof Paint for Coating | |
| CN109133720A (en) | A kind of diatom ooze dry powder paint and preparation method thereof | |
| CN112680036A (en) | Photocatalytic formaldehyde-removing coating and preparation method thereof | |
| CN112358757A (en) | Strippable protective film coating and preparation method and application thereof | |
| CN101579536B (en) | Preparation method of an air freshener of activated carbon | |
| CN105754425A (en) | Formaldehyde-adsorbing waterborne environment-friendly coating | |
| CN108373715B (en) | Coating with formaldehyde purification function and preparation method thereof | |
| CN109021780A (en) | A kind of anticorrosive coating to purify the air of a room and preparation method | |
| CN104826483B (en) | Biological purification method for paint spraying waste gas and organic waste gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190213 Address after: 100107 Block 704, Building 1, Territory Building, 13 Beiyuan Road, Chaoyang District, Beijing Patentee after: Beijing Tianhengjian Technology Development Co., Ltd. Address before: 528000 fan Lake Economic Development Zone, Sanshui District, Foshan, Guangdong Co-patentee before: SHAOGUAN UNION CHEMICAL CO., LTD. Patentee before: UNION (FOSHAN) CHEMICAL CO., LTD. |
|
| TR01 | Transfer of patent right |