CN103952048B - A kind of adjusting air humidity coating - Google Patents
A kind of adjusting air humidity coating Download PDFInfo
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- CN103952048B CN103952048B CN201410131830.8A CN201410131830A CN103952048B CN 103952048 B CN103952048 B CN 103952048B CN 201410131830 A CN201410131830 A CN 201410131830A CN 103952048 B CN103952048 B CN 103952048B
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- 238000000576 coating method Methods 0.000 title claims abstract description 53
- 239000011248 coating agent Substances 0.000 title claims abstract description 52
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000002270 dispersing agent Substances 0.000 claims abstract description 19
- 238000009736 wetting Methods 0.000 claims abstract description 19
- 239000000839 emulsion Substances 0.000 claims abstract description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002562 thickening agent Substances 0.000 claims abstract description 17
- 239000004113 Sepiolite Substances 0.000 claims abstract description 13
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 13
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 13
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims abstract description 11
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims abstract description 11
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 11
- 239000007864 aqueous solution Substances 0.000 claims abstract description 11
- 229910000281 calcium bentonite Inorganic materials 0.000 claims abstract description 11
- 239000013530 defoamer Substances 0.000 claims abstract description 11
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims abstract description 11
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 11
- 239000010457 zeolite Substances 0.000 claims abstract description 11
- 229920000578 graft copolymer Polymers 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010456 wollastonite Substances 0.000 claims abstract description 10
- 229910052882 wollastonite Inorganic materials 0.000 claims abstract description 10
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims abstract description 9
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 9
- 239000000243 solution Substances 0.000 claims abstract description 9
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims abstract description 9
- 239000002689 soil Substances 0.000 claims 1
- 229920002472 Starch Polymers 0.000 abstract 1
- 229920002239 polyacrylonitrile Polymers 0.000 abstract 1
- 239000008107 starch Substances 0.000 abstract 1
- 235000019698 starch Nutrition 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 20
- 230000000694 effects Effects 0.000 description 11
- 235000010215 titanium dioxide Nutrition 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 229920006395 saturated elastomer Polymers 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 235000013312 flour Nutrition 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 241000218691 Cupressaceae Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Paints Or Removers (AREA)
Abstract
The invention discloses a kind of adjusting air humidity coating, the component parts by weights meter of this coating, including acrylic emulsion 30～32 parts, wetting dispersing agent 2～5 parts, cenosphere 25～35 parts, calcium bentonite 3～8 parts, talcum powder 2～4 parts, zeolite powder 25～27 parts, sepiolite 16～18 parts, titanium dioxide 8～15 parts, wollastonite in powder 12～14 parts, defoamer 1～2 parts, thickener 5～10 parts, starch polyacrylonitrile graft polymer 10～15 parts, 22 36 parts of water, wherein, the solids content of acrylic emulsion is more than 45%, less than 60%, MFT 1～10 DEG C, wetting dispersing agent is about the sodium hexametaphosphate solution of 10%, thickener is about 2% hydroxyethyl cellulose aqueous solution.
Description
Technical field
The present invention relates to chemistry painting industry field, particularly to a kind of adjusting air humidity coating.
Background technology
Relative air humidity is the important parameter weighing indoor environment, to health, Interior Space makings
Amount and article deposit the most significant.
Coating is closely bound up with indoor environments such as the routine work of people, lives, and adjusting air humidity is functional
The use of coating can play its effect to greatest extent.Adjusting air humidity coating is the one risen in recent years
New function building and ornament materials, domestic researcher has started to be devoted to its developmental research work.North
The Li Shuanlin of capital polytechnical university prepares a kind of pottery regulation with organic resin for adjusting air humidity functional material
Air humidity coating (Li Shuanlin, Wu Yuting, Ma Chongfang, Meng Sheng. novel humidity controlling coating adjusting air humidity
The preliminary test research of energy. Engineering Thermophysics journal .2004, (3): 502-504), its defect is that employing is organic
Resin is as adjusting air humidity functional material, and moisture pick-up properties is preferable, but wet putting is poor.Huaqiao University
Adjusting air humidity coating (Lee of preparing for adjusting air humidity agent with polyacrylic resin such as Li Xiaoli
Know beautiful, woods pine and cypress. the performance study of polyacrylate interior wall humidity controlling coating. coatings industry .2007,37 (9:
21-24)) at RH > 75% time moisture sorption effect preferable, but do not carry out the test of coating moisture releasing performance.China
Number of patent application be 200810222377.6 patent application disclose a kind of indoor coating having humidity conditioning function, it leads to
Cross interpolation humidity-controlling functional material in conventional coating and achieve certain effect, but its damping effect is limited, as
At 25 DEG C, under conditions of relative humidity 85%, relative humidity maximum decrement is 10%RH；Moisture absorption is saturated
After, under conditions of temperature 25 DEG C, relative humidity are 35%, coating meeting moisture releasing, relative humidity maximum increases
Amount reaches 7%RH.This effect still can not meet people's requirement to comfort level, reaches when humidity such as summer
When 85%, reducing 10%RH, humidity is still 75%, and this humidity body-sensing is the most uncomfortable；Same reason,
In dry winter, the moisture releasing amount of its 7%RH is also far from being enough.
In a word, adjusting air humidity coating, because of its specific purposes, will become the another development of functional coating
Direction.But not yet there is the coating products of adjusting air humidity excellent performance to occur at present.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of adjusting air humidity coating,
This coating can be automatically adjusted indoor air humidity, meets people's requirement to air humidity.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
A kind of adjusting air humidity coating, the component parts by weights meter of this coating, including acrylic emulsion
30～32 parts, wetting dispersing agent 2～5 parts, cenosphere 25～35 parts, calcium bentonite 3～8 parts,
Talcum powder 2～4 parts, zeolite powder 25～27 parts, sepiolite 16～18 parts, titanium dioxide 8～15 parts, silicon ash
Stone flour 12～14 parts, defoamer 1～2 parts, thickener 5～10 parts, S-PAN graft polymers
10～15 parts, water 22-36 part, wherein, the solids content of acrylic emulsion more than 45%, less than 60%,
MFT 1～10 DEG C, wetting dispersing agent is about the sodium hexametaphosphate solution of 10%, and thickener is about
2% hydroxyethyl cellulose aqueous solution.
This coating can be adopted and prepare with the following method:
1) first acrylic emulsion is added to the water under conditions of stirring in stirred tank, with
The speed of 600～800rpm stirs 15～20 minutes；
2) it is sequentially added into cenosphere, calcium bentonite, talcum powder, zeolite powder, sepiolite, silicon ash
Stone flour, often adds a kind of raw material and stirs 4～8 minutes with the speed of 800～1000rpm；
3) add the hydroxyethyl cellulose aqueous solution of half amount, then add wetting dispersing agent, titanium white
Powder and defoamer, the speed with 1000～1200rpm stirs 10～15 minutes；
4) after all adding, more remaining hydroxyethyl cellulose aqueous solution is added, then with 1500～
The Rate Dispersion of 1700rpm is uniformly.
Wherein
The granularity of talcum powder, zeolite powder, sepiolite and wollastonite in powder is 300～600 mesh, calcium bentonite
It is 400～600 mesh with titanium dioxide.
The specification of cenosphere is 200～400 μm.
Defoamer is paint field conventional antifoam.
Having the beneficial effect that of the adjusting air humidity coating of the present invention
The present invention uses cenosphere, zeolite powder, sepiolite and S-PAN graft polymers to combine work
It is applied in dope for inner wall of architecture for adjusting air humidity functional material, in conjunction with the feature of organic and inorganic materials,
Reach effectively to regulate indoor air humidity by the mediation of component proportion, be allowed to control be of value to health
In the range of, the most pollution-free, Diamond Search discharges.
Method of testing: by coating according on the glass plate being sprayed on two pieces of 150mm × 150mm, after naturally drying
It is placed in baking oven, dries 5 hours under the conditions of 80 DEG C.Two pieces of models are placed in temperature 25 DEG C, the wettest
In the 10L closed container of degree 85%, measure the relative humidity maximum decrement in container.Closed container internal phase
After humidity reaches balance, in change container, environmental condition is 25 DEG C, relative humidity 35%, measures in container
Relative humidity maximum increments.By relative humidity situation of change in humidity sensor record container.
Test result: at 25 DEG C, under conditions of relative humidity 85%, relative humidity decrement reaches 25～35%,
Illustrate that this test coating moisture sorption effect is good；After moisture absorption is saturated, it is the bar of 35% in temperature 25 DEG C, relative humidity
Under part, test coating meeting moisture releasing, relative humidity increments reaches 18～24%.
Detailed description of the invention
Embodiment one
A kind of adjusting air humidity coating, the component parts by weights meter of this coating, including acrylic emulsion
30 parts, wetting dispersing agent 5 parts, cenosphere 25 parts, calcium bentonite 8 parts, talcum powder 2 parts, boiling
Stone flour 27 parts, sepiolite 16 parts, titanium dioxide 15 parts, wollastonite in powder 12 parts, defoamer 2 parts, thickening
Agent 5 parts, S-PAN graft polymers 15 parts, 22 parts of water, wherein, acrylic emulsion
Solids content is more than 45%, less than 60%, and MFT 1～10 DEG C, wetting dispersing agent is about 10%
Sodium hexametaphosphate solution, thickener is about 2% hydroxyethyl cellulose aqueous solution.
Embodiment one test result: at 25 DEG C, under conditions of relative humidity 85%, relative humidity decrement reaches
To 25%, illustrate that this test coating moisture sorption effect is good；After moisture absorption is saturated, in temperature 25 DEG C, relative humidity it is
Under conditions of 35%, test coating meeting moisture releasing, relative humidity increments reaches 21%.
Embodiment two
A kind of adjusting air humidity coating, the component parts by weights meter of this coating, including acrylic emulsion
32 parts, wetting dispersing agent 2 parts, cenosphere 35 parts, calcium bentonite 3 parts, talcum powder 4 parts, boiling
Stone flour 25 parts, sepiolite 18 parts, titanium dioxide 8 parts, wollastonite in powder 14 parts, defoamer 1 part, thickener
10 parts, S-PAN graft polymers 10 parts, 36 parts of water, wherein, acrylic emulsion
Solids content is more than 45%, less than 60%, and MFT 1～10 DEG C, wetting dispersing agent is about 10%
Sodium hexametaphosphate solution, thickener is about 2% hydroxyethyl cellulose aqueous solution.
Embodiment two test result: at 25 DEG C, under conditions of relative humidity 85%, relative humidity decrement reaches
To 30%, illustrate that this test coating moisture sorption effect is good；After moisture absorption is saturated, in temperature 25 DEG C, relative humidity it is
Under conditions of 35%, test coating meeting moisture releasing, relative humidity increments reaches 18%.
Embodiment three
A kind of adjusting air humidity coating, the component parts by weights meter of this coating, including acrylic emulsion
31 parts, wetting dispersing agent 3.5 parts, cenosphere 30 parts, calcium bentonite 5 parts, talcum powder 3 parts,
Zeolite powder 26 parts, sepiolite 17 parts, titanium dioxide 12 parts, wollastonite in powder 13 parts, defoamer 1.5 parts,
Thickener 8 parts, S-PAN graft polymers 13 parts, 30 parts of water, wherein, esters of acrylic acid breast
The solids content of liquid is more than 45%, less than 60%, and MFT 1～10 DEG C, wetting dispersing agent is about 10%
Sodium hexametaphosphate solution, thickener is about 2% hydroxyethyl cellulose aqueous solution.
Embodiment three test result: at 25 DEG C, under conditions of relative humidity 85%, relative humidity decrement reaches
To 35%, illustrate that this test coating moisture sorption effect is good；After moisture absorption is saturated, in temperature 25 DEG C, relative humidity it is
Under conditions of 35%, test coating meeting moisture releasing, relative humidity increments reaches 24%.
Embodiment four
A kind of adjusting air humidity coating, the component parts by weights meter of this coating, including acrylic emulsion
30.5 parts, wetting dispersing agent 4 parts, cenosphere 27 parts, calcium bentonite 6 parts, talcum powder 2.5 parts,
Zeolite powder 26.5 parts, sepiolite 16.5 parts, titanium dioxide 13 parts, wollastonite in powder 12.5 parts, defoamer 1.8
Part, thickener 6 parts, S-PAN graft polymers 13 parts, 25 parts of water, wherein, acrylate
The solids content of class emulsion is more than 45%, less than 60%, and MFT 1～10 DEG C, wetting dispersing agent is about
Being the sodium hexametaphosphate solution of 10%, thickener is about 2% hydroxyethyl cellulose aqueous solution.
Embodiment four test result: at 25 DEG C, under conditions of relative humidity 85%, relative humidity decrement reaches
To 32%, illustrate that this test coating moisture sorption effect is good；After moisture absorption is saturated, in temperature 25 DEG C, relative humidity it is
Under conditions of 35%, test coating meeting moisture releasing, relative humidity increments reaches 22%.
Embodiment five
A kind of adjusting air humidity coating, the component parts by weights meter of this coating, including acrylic emulsion
31.5 parts, wetting dispersing agent 3 parts, cenosphere 33 parts, calcium bentonite 4 parts, talcum powder 3.5 parts,
Zeolite powder 25.5 parts, sepiolite 17.5 parts, titanium dioxide 9 parts, wollastonite in powder 13.5 parts, defoamer 1.3
Part, thickener 9 parts, S-PAN graft polymers 11 parts, 32 parts of water, wherein, acrylate
The solids content of class emulsion is more than 45%, less than 60%, and MFT 1～10 DEG C, wetting dispersing agent is about
Being the sodium hexametaphosphate solution of 10%, thickener is about 2% hydroxyethyl cellulose aqueous solution.
Embodiment five test result: at 25 DEG C, under conditions of relative humidity 85%, relative humidity decrement reaches
To 27%, illustrate that this test coating moisture sorption effect is good；After moisture absorption is saturated, in temperature 25 DEG C, relative humidity it is
Under conditions of 35%, test coating meeting moisture releasing, relative humidity increments reaches 20%.
Applicant states, above-described embodiment only for technology design and the feature of the present invention are described, its object is to
Allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not be limited this with this
The protection domain of invention.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention,
The equivalence of raw material each to product of the present invention is replaced and the interpolation of auxiliary element, concrete way choice etc., all falls
Within the scope of protection scope of the present invention and disclosure.
Claims (2)
1. an adjusting air humidity coating, it is characterised in that the component parts by weights meter of this coating, including
Acrylic emulsion 30～32 parts, wetting dispersing agent 2～5 parts, cenosphere 25～35 parts, calcareous swollen
Profit soil 3～8 parts, talcum powder 2～4 parts, zeolite powder 25～27 parts, sepiolite 16～18 parts, titanium dioxide 8～
15 parts, wollastonite in powder 12～14 parts, defoamer 1～2 parts, thickener 5～10 parts, S-PAN
Graft polymers 10～15 parts, water 22-36 part, wherein, the solids content of acrylic emulsion more than 45%,
Less than 60%, MFT 1～10 DEG C, wetting dispersing agent is the sodium hexametaphosphate solution of 10%, increases
Thick dose is 2% hydroxyethyl cellulose aqueous solution；Wherein, talcum powder, zeolite powder, sepiolite and wollastonite in powder
It is 400～600 mesh that granularity is 300～600 mesh, calcium bentonite and titanium dioxide；The specification of cenosphere
It is 200～400 μm.
2. a kind of adjusting air humidity coating as claimed in claim 1, it is characterised in that the group of this coating
Part parts by weights meter, including acrylic emulsion 31 parts, wetting dispersing agent 3.5 parts, cenosphere 30
Part, calcium bentonite 5 parts, talcum powder 3 parts, zeolite powder 26 parts, sepiolite 17 parts, titanium dioxide 12 parts,
Wollastonite in powder 13 parts, defoamer 1.5 parts, thickener 8 parts, S-PAN graft polymers 13 parts,
30 parts of water, wherein, the solids content of acrylic emulsion more than 45%, less than 60%, minimum film forming temperature
Spending 1～10 DEG C, wetting dispersing agent is the sodium hexametaphosphate solution of 10%, and thickener is 2% hydroxyethyl cellulose
The aqueous solution.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410131830.8A CN103952048B (en) | 2014-04-02 | 2014-04-02 | A kind of adjusting air humidity coating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410131830.8A CN103952048B (en) | 2014-04-02 | 2014-04-02 | A kind of adjusting air humidity coating |
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| CN103952048A CN103952048A (en) | 2014-07-30 |
| CN103952048B true CN103952048B (en) | 2016-08-17 |
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| CN107227086A (en) * | 2017-06-26 | 2017-10-03 | 界首市通泽建材销售有限公司 | A kind of preparation method of multifunctional inner wall coating material |
| CN107555848B (en) * | 2017-09-09 | 2020-03-24 | 李长松 | Zeolite foamy mud coating |
| CN108239326B (en) * | 2018-01-19 | 2020-09-08 | 深圳理科生科技有限公司 | Intelligent respiration response material and preparation method thereof |
| CN110593522B (en) * | 2019-09-18 | 2021-01-26 | 安徽理工大学 | Passive room made based on recycling of solid waste |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348629A (en) * | 2008-09-17 | 2009-01-21 | 中国建筑材料科学研究总院 | Indoor coating having humidity conditioning function and construction method thereof |
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2014
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348629A (en) * | 2008-09-17 | 2009-01-21 | 中国建筑材料科学研究总院 | Indoor coating having humidity conditioning function and construction method thereof |
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Address after: 315137 Zhejiang city of Ningbo province Yinzhou District Yunlong Town Li Yun Road No. 10 Applicant after: Zhu Xiaoying Address before: Yinzhou District Heng Jie Heng Jie Zhen Road 315181 No. 50 Zhejiang city of Ningbo Province Applicant before: Zhu Xiaoying |
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Effective date of registration: 20171219 Address after: 528325 Guangdong Province, Foshan City Road Xingtan town of Nam Long Industrial Zone Shunde District No. 7, 2 Patentee after: Guangdong new building materials Co.,Ltd. Address before: 315137 Zhejiang city of Ningbo province Yinzhou District Yunlong Town Li Yun Road No. 10 Patentee before: Zhu Xiaoying |
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Effective date of registration: 20240528 Address after: 528315 A, 3rd Floor, Building 104, No. 200 Second Ring Road, Yanyuan Community, Xingtan Town, Shunde District, Foshan City, Guangdong Province Patentee after: Foshan Masco New Building Materials Co.,Ltd. Country or region after: China Address before: 528325 2 of Middle Road, Nalan industrial district, Shunde, Foshan, Guangdong Province, 7 Patentee before: Guangdong new building materials Co.,Ltd. Country or region before: China |