CN107401060B - Preparation method of water-based bass with compression-resistant high-resilience performance - Google Patents
Preparation method of water-based bass with compression-resistant high-resilience performance Download PDFInfo
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- CN107401060B CN107401060B CN201710542212.6A CN201710542212A CN107401060B CN 107401060 B CN107401060 B CN 107401060B CN 201710542212 A CN201710542212 A CN 201710542212A CN 107401060 B CN107401060 B CN 107401060B
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0006—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using woven fabrics
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0009—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using knitted fabrics
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
- D06N3/005—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers obtained by blowing or swelling agent
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0061—Organic fillers or organic fibrous fillers, e.g. ground leather waste, wood bark, cork powder, vegetable flour; Other organic compounding ingredients; Post-treatment with organic compounds
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
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- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
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Abstract
The invention relates to a preparation method of a water-based bass with compression-resistant high-resilience performance, which comprises the following steps of preparing a slurry from ⑴, preparing a water-based bass foaming slurry from ①, sequentially adding 10-30 parts of tap water, 2-5 parts of a water-based dispersing agent, 1-3 parts of a water-based crosslinking agent, 3-6 parts of a water-based foam stabilizer, 3-6 parts of a water-based foaming agent, 2-5 parts of a medium-temperature microsphere foaming agent, 20-40 parts of filling powder and 1-2 parts of a water-based thickening agent into 200-300 parts of water-based polyurethane resin, stirring and mechanically foaming to prepare the water-based bass foaming slurry with uniform cells, preparing a curing solution from ②, adding 85-95 parts of tap water into 6-14 parts of a demulsification curing agent, uniformly stirring to obtain the curing solution, preparing the water-based bass from ⑵, uniformly coating the water-based bass foaming slurry on a knitting or woven fabric, sequentially washing and pressing, and finally entering a five-zone temperature rise oven for foaming, and drying to obtain the water-based bass with low cost, safety, environmental protection, high compression resistance and high resilience performance.
Description
Technical Field
The invention relates to the technical field of synthetic leather production, in particular to a preparation method of a water-based bass with compression resistance and high resilience.
Background
The synthetic leather has the excellent characteristics of soft and natural luster, soft hand feeling, strong real leather feeling, bending resistance, aging resistance and the like, is the most ideal substitute of natural leather, and is widely applied to the industries of clothes, shoemaking, cases, furniture and the like. However, compared with natural leather, synthetic leather products on the market have poorer compression-resistant resilience performance, so that the parts of the synthetic leather sofa chairs which are in contact with people and stressed are obviously sunken and sunk in daily use, and although the deformed parts are slowly restored, the restorability of the deformed parts is gradually reduced in the long-time use process, so that the permanent sunken and sinking are caused, the integral appearance and use feeling of the sofa are affected, the air permeability of the deformed parts is seriously reduced, and the buttocks of people sitting on the parts for a long time have obvious wet feeling. In view of these disadvantages, the conventional synthetic leather products are improved mainly by changing the properties of the slurry, but the effect is limited, and the cost is obviously increased or the physical properties are obviously reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method of a water-based bass with compression resistance and high resilience, which has low cost, safety, environmental protection and strong air permeability.
In order to solve the problems, the preparation method of the water-based bass with compression resistance and high resilience comprises the following steps:
⑴ preparation of slurry:
① preparing water-based bass foaming slurry, namely adding 10-30 parts by weight of tap water, 2-5 parts by weight of water-based dispersing agent, 1-3 parts by weight of water-based cross-linking agent, 3-6 parts by weight of water-based foam stabilizer, 3-6 parts by weight of water-based foaming agent, 2-5 parts by weight of medium-temperature microsphere foaming agent, 20-40 parts by weight of filling powder and 1-2 parts by weight of water-based thickener in turn into water-based bass slurry with the viscosity of 10000-20000 mpa.s by stirring through a high-speed dispersion machine, then introducing the water-based bass slurry into a foaming machine for mechanical foaming until the volume is 1.4-1.6 times of the original volume, and preparing the water-based bass foaming slurry with uniform cells;
② preparing a curing liquid, namely adding 85-95 parts by weight of tap water into 6-14 parts by weight of demulsifying curing agent, and uniformly stirring to obtain the curing liquid, wherein the demulsifying curing agent is one or more of carbonic acid, lactic acid, citric acid, calcium chloride, sodium chloride, ferric chloride and aluminum chloride;
⑵ preparation of aqueous base:
the water-based bass foaming slurry is mixed according to the ratio of 500-550 g/m2The coating amount is uniformly coated on the knitted or woven fabric, the knitted or woven fabric is sequentially washed and dried by water after solidification of the curing liquid, and finally the cured fabric enters a five-region stepped heating oven for foaming and drying to obtain the water-based bass with compression resistance and high resilience.
The aqueous polyurethane resin in the step ⑴ is aromatic isocyanate type aqueous polyurethane resin with the solid content of 30-45%.
The aqueous dispersant in the step ⑴ is a high molecular dispersant containing pigment affinity groups or an ammonium salt or sodium salt powder wetting dispersant.
The aqueous crosslinking agent in the step ⑴ is a blocked isocyanate crosslinking agent.
The aqueous foam stabilizer in the step ⑴ is a silicone polyether emulsion foam stabilizer.
The aqueous foaming agent in the step ⑴ is an anionic surfactant foaming agent or a stearate foaming agent.
The medium-temperature microsphere foaming agent in the step ⑴ is a thermal expansion type microsphere foaming agent, and the foaming temperature is 140-160 ℃.
The powder filled in the step ⑴ is one or more of wood powder, talcum powder, heavy calcium, light calcium and kaolin.
The aqueous thickener in the step ⑴ is nonionic associative thickener or alkali swelling acrylic thickener.
The five-zone stepwise manner in the step ⑵ means that the temperatures of the first zone and the second zone are both 140-160 ℃, the temperature of the third zone is 130 ℃, the temperature of the fourth zone is 120 ℃, and the temperature of the fifth zone is 100 ℃.
Compared with the prior art, the invention has the following advantages:
1. the invention improves the stability of the cell structure of the waterborne synthetic leather base (the translated sound of Bass in English refers to polyurethane semi-finished leather, the surface of the Bass can be changed into a polyurethane synthetic leather finished product after being processed by a subsequent process), and improves the cell density, thereby improving the performances of the synthetic leather product such as compression resistance, rebound elasticity, air permeability, moisture permeability and the like.
2. The bass slurry is subjected to primary mechanical physical foaming by a foaming machine under the action of a surfactant foaming agent, the foamed slurry coating base cloth is subjected to curing and water washing and finally enters an oven for drying, and in the drying process, the low-temperature microsphere foaming agent in the slurry expands after being heated, so that a large number of microcells are formed for the second time. Through adopting the mode of mechanical physics and the two foaming of thermal expansion, inside microbubble hole superposes to make through waterborne cross-linking agent produce the chemical bond between the molecule of line type in the waterborne polyurethane, make the line type molecule link together each other, form network structure, improve the intensity and the elasticity of thick liquids, and then can effectively improve the stability of whole cell structure and the intensity of cell wall.
Because of a single mechanical physics or thermal expansion foaming mode, the hand feeling and the resilience of the product can be adjusted only by adjusting the size of the foam pores, so the foam pores are large, the hand feeling of the product is soft but not full enough, the resilience is extremely poor, the compression resistance and the deformation resistance are poor, the indentation is serious, the foam pores are small, the resilience of the product is good, but the hand feeling is hard and lacks skin texture. And adopt mechanical physics and thermal energy to combine together the mode of foaming, can effectively improve the bubble density, its mutual superimposed microbubble hole quantity is higher than the bubble quantity of single foaming mode far away, and bubble density is big more, and the feel can be more soft full, combines the cross-linking agent effect to make mutual superimposed microbubble hole stable in structure to possess superior resistance to compression and become elasticity.
3. According to the invention, the pore density of the waterborne synthetic leather base is improved, so that the pores in the base are greatly increased, and the air permeability, moisture permeability and other properties of the waterborne synthetic leather are improved.
4. In the foaming process combining mechanical physics and thermal expansion, the volume of the foam is increased along with the increase of the density of micro-bubble pores, and the thickness of the product is increased along with the increase of the density of the micro-bubble pores, so that the coating amount of the slurry is reduced, and the material cost is reduced.
5. The raw materials adopted in the invention are all environment-friendly products, are completely nontoxic and harmless, do not cause any adverse effect on the body and the environment, and ensure clean production.
Detailed Description
Example 1 a method for preparing an aqueous base having compression resistance and high resilience performance, comprising the steps of:
⑴ preparation of slurry:
① preparing aqueous Bass foaming slurry, adding 10 parts of tap water, 2 parts of aqueous dispersing agent, 1 part of aqueous cross-linking agent, 3 parts of aqueous foam stabilizer, 3 parts of aqueous foaming agent, 2 parts of medium-temperature microsphere foaming agent, 20 parts of filling powder and 1 part of aqueous thickening agent into 200 parts of aqueous polyurethane resin in sequence by weight (kg), stirring for 0.5h at the rotating speed of 900r/min by using a high-speed dispersion machine to prepare the aqueous Bass slurry with the viscosity of 10000mpa.s, introducing the aqueous Bass slurry into a foaming machine, mechanically foaming to 1.4 times of the original volume, and preparing the aqueous Bass foaming slurry with uniform cells.
② preparing the solidifying liquid, adding 85 parts of tap water into 6 parts of demulsifying solidifying agent (one or more of carbonic acid, lactic acid, citric acid, calcium chloride, sodium chloride, ferric chloride and aluminum chloride) by weight parts (kg), and stirring to obtain the solidifying liquid.
⑵ preparation of aqueous base:
mixing 500g/m of aqueous Bass foaming slurry2The coating amount is uniformly coated on the knitted or woven fabric, the knitted or woven fabric is sequentially washed and dried by water after solidification of the curing liquid, and finally the cured fabric enters a five-region stepped heating oven for foaming and drying to obtain the water-based bass with compression resistance and high resilience.
Wherein: the five-zone stepwise means that the temperatures of the first zone and the second zone are both 140 ℃, the temperature of the third zone is 130 ℃, the temperature of the fourth zone is 120 ℃, and the temperature of the fifth zone is 100 ℃.
The base material is put into a first-zone oven, the medium-temperature microsphere foaming agent begins to foam under the action of thermal expansion, the medium-temperature microsphere foaming agent is completely foamed after the base material enters a second zone, secondary cells are formed in the water-based base material through the medium-temperature microsphere foaming agent on the basis of original cells, and finally the water-based base material is completely dried through three zones to five zones to obtain the water-based base material with compression resistance, height changing and resilience performance.
Example 2 a method for preparing an aqueous base having compression resistance and high resilience performance, comprising the steps of:
⑴ preparation of slurry:
① preparing aqueous Bass foaming slurry, adding 30 parts of tap water, 5 parts of aqueous dispersing agent, 3 parts of aqueous cross-linking agent, 6 parts of aqueous foam stabilizer, 6 parts of aqueous foaming agent, 5 parts of medium-temperature microsphere foaming agent, 40 parts of filling powder and 2 parts of aqueous thickening agent into 300 parts of aqueous polyurethane resin in sequence by weight (kg), stirring for 0.5h at the rotating speed of 900r/min by using a high-speed dispersion machine to prepare the aqueous Bass slurry with the viscosity of 20000mpa.s, introducing the aqueous Bass slurry into a foaming machine, mechanically foaming to 1.6 times of the original volume, and preparing the aqueous Bass foaming slurry with uniform cells.
② preparing the solidifying liquid, adding 95 parts of tap water into 14 parts of demulsifying solidifying agent (one or more of carbonic acid, lactic acid, citric acid, calcium chloride, sodium chloride, ferric chloride and aluminum chloride) by weight parts (kg), and stirring to obtain the solidifying liquid.
⑵ preparation of aqueous base:
550g/m of aqueous bass foaming slurry2The coating amount is uniformly coated on the knitted or woven fabric, the knitted or woven fabric is sequentially washed and dried by water after solidification of the curing liquid, and finally the cured fabric enters a five-region stepped heating oven for foaming and drying to obtain the water-based bass with compression resistance and high resilience.
Wherein: the five-zone stepwise mode means that the temperatures of the first zone and the second zone are both 160 ℃, the temperature of the third zone is 130 ℃, the temperature of the fourth zone is 120 ℃, and the temperature of the fifth zone is 100 ℃.
The base material is put into a first-zone oven, the medium-temperature microsphere foaming agent begins to foam under the action of thermal expansion, the medium-temperature microsphere foaming agent is completely foamed after the base material enters a second zone, secondary cells are formed in the water-based base material through the medium-temperature microsphere foaming agent on the basis of original cells, and finally the water-based base material is completely dried through three zones to five zones to obtain the water-based base material with compression resistance, height changing and resilience performance.
Example 3 a method for preparing an aqueous base having compression resistance and high resilience performance, comprising the steps of:
⑴ preparation of slurry:
① preparing aqueous Bass foaming slurry, adding 20 parts of tap water, 3.5 parts of aqueous dispersing agent, 2 parts of aqueous cross-linking agent, 4.5 parts of aqueous foam stabilizer, 4.5 parts of aqueous foaming agent, 3.5 parts of medium-temperature microsphere foaming agent, 30 parts of filling powder and 1.5 parts of aqueous thickening agent into 250 parts of aqueous polyurethane resin in sequence by weight (kg), stirring for 0.5h at the rotating speed of 900r/min by a high-speed dispersion machine to prepare aqueous Bass slurry with the viscosity of 15000mpa.s, then introducing the aqueous Bass slurry into a foaming machine, mechanically foaming to 1.5 times of the original volume to prepare the aqueous Bass foaming slurry with uniform cells.
② preparing the solidifying liquid, adding 90 parts of tap water into 10 parts of demulsifying solidifying agent (one or more of carbonic acid, lactic acid, citric acid, calcium chloride, sodium chloride, ferric chloride and aluminum chloride) by weight parts (kg), and stirring to obtain the solidifying liquid.
⑵ preparation of aqueous base:
the water-based bass foaming slurry is mixed according to the proportion of 525g/m2The coating amount is uniformly coated on the knitted or woven fabric, the knitted or woven fabric is sequentially washed and dried by water after solidification of the curing liquid, and finally the cured fabric enters a five-region stepped heating oven for foaming and drying to obtain the water-based bass with compression resistance and high resilience.
Wherein: the five-zone step type means that the temperatures of the first zone and the second zone are both 150 ℃, the temperature of the third zone is 130 ℃, the temperature of the fourth zone is 120 ℃, and the temperature of the fifth zone is 100 ℃.
The base material is put into a first-zone oven, the medium-temperature microsphere foaming agent begins to foam under the action of thermal expansion, the medium-temperature microsphere foaming agent is completely foamed after the base material enters a second zone, secondary cells are formed in the water-based base material through the medium-temperature microsphere foaming agent on the basis of original cells, and finally the water-based base material is completely dried through three zones to five zones to obtain the water-based base material with compression resistance, height changing and resilience performance.
In examples 1 to 3, the aqueous polyurethane resin refers to an aromatic isocyanate-based aqueous polyurethane resin (co-fertilizer, city science chemical industry ltd) having a solid content of 30 to 45%.
The water-based dispersant is a high-molecular dispersant containing pigment affinity groups or an ammonium salt and sodium salt powder wetting dispersant (Shanghai deep bamboo chemical technology Co., Ltd.).
The water-based crosslinking agent is a blocked isocyanate crosslinking agent (Shanghai Yuen chemical Co., Ltd.).
The aqueous foam stabilizer is a silicone polyether emulsion foam stabilizer (Qingdao Zhongbao chemical Co., Ltd.).
The aqueous foaming agent is an anionic surfactant foaming agent or a stearate foaming agent (Jinan Shuichang chemical Co., Ltd.).
The medium-temperature microsphere foaming agent is a thermal expansion type microsphere foaming agent, and the foaming temperature of the medium-temperature microsphere foaming agent is 140-160 ℃ (Shanghai warpont Utility Co., Ltd.).
The filling powder is one or more of wood powder, talcum powder, heavy calcium, light calcium and kaolin.
The aqueous thickener is nonionic associative thickener or alkali swelling acrylic acid thickener (Pond chemical Co., Ltd., Fuzhou).
Claims (5)
1. A preparation method of a water-based bass with compression resistance and high resilience performance comprises the following steps:
⑴ preparation of slurry:
① preparing water-based bass foaming slurry, namely adding 10-30 parts by weight of tap water, 2-5 parts by weight of water-based dispersing agent, 1-3 parts by weight of water-based cross-linking agent, 3-6 parts by weight of water-based foam stabilizer, 3-6 parts by weight of water-based foaming agent, 2-5 parts by weight of medium-temperature microsphere foaming agent, 20-40 parts by weight of filling powder and 1-2 parts by weight of water-based thickener in turn into water-based bass slurry with the viscosity of 10000-20000 mpa.s by stirring through a high-speed dispersion machine, then introducing the water-based bass slurry into a foaming machine for mechanical foaming until the volume is 1.4-1.6 times of the original volume, and preparing the water-based bass foaming slurry with uniform cells;
the aqueous dispersant is ammonium salt and sodium salt powder wetting dispersant; the water-based foaming agent is a stearate foaming agent; the medium-temperature microsphere foaming agent is a thermal expansion type microsphere foaming agent, and the foaming temperature is 140-160 ℃; the aqueous thickening agent is an alkali swelling acrylic acid thickening agent;
② preparing a curing liquid, namely adding 85-95 parts by weight of tap water into 6-14 parts by weight of demulsifying curing agent, and uniformly stirring to obtain the curing liquid, wherein the demulsifying curing agent is one or more of carbonic acid, lactic acid, citric acid, calcium chloride, sodium chloride, ferric chloride and aluminum chloride;
⑵ preparation of aqueous base:
the water-based bass foaming slurry is mixed according to the ratio of 500-550 g/m2The coating amount is evenly coated on the knitted or woven fabric, the knitted or woven fabric is sequentially washed and pressed to be dry after solidification of the curing liquid, and finally the knitted or woven fabric enters a five-zone stepped heating oven to be foamed and dried to obtain the fabric IThe water base bass with compression resistance and high resilience performance; the five-zone step type means that the temperatures of a first zone and a second zone are 140-160 ℃, the temperature of a third zone is 130 ℃, the temperature of a fourth zone is 120 ℃, and the temperature of a fifth zone is 100 ℃.
2. The method for preparing the waterborne base with the compression-resistant and high-resilience performance as claimed in claim 1, wherein the waterborne polyurethane resin in the step ⑴ is an aromatic isocyanate waterborne polyurethane resin with a solid content of 30% -45%.
3. The method for preparing the water-based bass with the compression-resistant and high-resilience performance as claimed in claim 1, wherein the water-based cross-linking agent in the step ⑴ is a blocked isocyanate-based cross-linking agent.
4. The method for preparing the water-based bass with the compression-resistant high-resilience performance as claimed in claim 1, wherein the water-based foam stabilizer in the step ⑴ is a silicone polyether emulsion type foam stabilizer.
5. The method for preparing the water-based bass with the compression resistance and the high resilience as claimed in claim 1, wherein the powder filled in the step ⑴ is one or more of wood powder, talcum powder, heavy calcium, light calcium and kaolin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710542212.6A CN107401060B (en) | 2017-07-05 | 2017-07-05 | Preparation method of water-based bass with compression-resistant high-resilience performance |
Applications Claiming Priority (1)
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| CN109137537B (en) * | 2018-09-10 | 2020-03-27 | 钟金榜 | Closed porous composite material, heat insulating material, sound insulating material, and method for producing same |
| CN110373913A (en) * | 2019-07-26 | 2019-10-25 | 兰州科天新材料股份有限公司 | A kind of aqueous cushion and preparation method thereof |
| CN110552208A (en) * | 2019-09-12 | 2019-12-10 | 兰州科天水性高分子材料有限公司 | Water-based cushion and manufacturing method thereof |
| CN111155322A (en) * | 2020-01-13 | 2020-05-15 | 华懋（厦门）特种材料有限公司 | Manufacturing process of negative oxygen ion fabric |
| CN112431031B (en) * | 2020-11-04 | 2023-09-22 | 安徽安利材料科技股份有限公司 | Polyurethane synthetic leather with low haze and easy cleaning for anti-napping sofa furniture and preparation method thereof |
| CN114908586A (en) * | 2022-06-16 | 2022-08-16 | 中革(浙江)高新材料科技有限公司 | Bio-based water-based bamboo residue leather and manufacturing method thereof |
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Effective date of registration: 20230518 Address after: 230031, 200 meters west of the intersection of Fanhua Avenue and Bagongshan Road in Hefei Economic Development Zone, Anhui Province Patentee after: HEFEI KETIAN WATERBORNE TECHNOLOGY Co.,Ltd. Address before: 730000 Ketian water science and Technology Industrial Park, 3949 Kunlun Mountain Avenue, Lanzhou New District, Lanzhou City, Gansu Province Patentee before: LANZHOU KETIAN NEW MATERIAL Co.,Ltd. |