CN111349416A - Reactive polyurethane hot melt adhesive for automotive interior and preparation method thereof - Google Patents
Reactive polyurethane hot melt adhesive for automotive interior and preparation method thereof Download PDFInfo
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- CN111349416A CN111349416A CN202010376020.4A CN202010376020A CN111349416A CN 111349416 A CN111349416 A CN 111349416A CN 202010376020 A CN202010376020 A CN 202010376020A CN 111349416 A CN111349416 A CN 111349416A
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6607—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides a reactive polyurethane hot melt adhesive for automotive interiors and a preparation method thereof, wherein the reactive polyurethane hot melt adhesive for the automotive interiors comprises the following components in parts by weight: 30-60 parts of polyether polyol; 20-35 parts of polyester polyol; 15-23 parts of isocyanate; 1-3 parts of a chain extender; 0.5-1 part of a stabilizer; 1-3 parts of an adhesion promoter; 2-3 parts of an aminosilane coupling agent; 0.5-2 parts of a catalyst. It is safe, environment-friendly, pollution-free and excellent in performance. The preparation method of the reactive polyurethane hot melt adhesive for the automotive interior has the advantages of stable process and high production efficiency.
Description
Technical Field
The invention relates to the technical field of hot melt adhesives, and particularly relates to a reactive polyurethane hot melt adhesive for automotive interiors and a preparation method thereof.
Background
At present, the glue used for the interior decoration of the automobile industry is mainly solvent glue in China, and because the adhesive strength is high, a lot of production equipment is not required to be invested, and the price is low, the glue can be rapidly developed in the starting stage of the automobile industry.
However, with the development of society and the improvement of environmental protection requirements, the defects of the solvent adhesive in the prior art are inevitably exposed, most prominently, the solvent adhesive is not friendly to human bodies and the environment, and the production operation process efficiency is low. Therefore, it is necessary to develop an adhesive suitable for automotive interior, which is environment-friendly, pollution-free and stable in production process, so as to replace solvent adhesives.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a reactive polyurethane hot melt adhesive for automotive interior trim, which is safe and environment-friendly, stable in production process and high in efficiency, and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
according to the first aspect of the invention, the reactive polyurethane hot melt adhesive for the automotive interior comprises the following components in parts by weight:
further, the polyether polyol is one or more of polyoxypropylene glycol, polyethylene glycol, polytetrahydrofuran glycol and tetrahydrofuran-propylene oxide copolymerization glycol, and the molecular weight of the polyether polyol is 400-4000; the water resistance, impact resistance and low temperature of the polyurethane hot melt adhesive can be effectively improved by using the polyether polyol.
Further, the polyester polyol is one or more of polyhexamethylene adipate glycol, poly epsilon-caprolactone polyol, polycarbonate diol and polyethylene glycol adipate; as the relative molecular weight of the polyester polyol is increased, the breaking strength and the breaking elongation of the polyurethane hot melt adhesive are obviously improved, and the molecular weight of the polyester polyol is controlled to be 1000-4000, so as to obtain the optimal bonding strength.
Further, the chain extender is one or more of ethylene glycol, propylene glycol, 1, 4-butanediol, hexanediol and trimethylolpropane; 1, 4-butanediol and/or trimethylolpropane are preferred.
Further, the isocyanate is one or more of phenyl diisocyanate, diphenylmethane-4, 4 diisocyanate, 1,6 hexamethylene diisocyanate and isophorone diisocyanate; toluene diisocyanate and/or diphenylmethane-4, 4 diisocyanate are preferred.
Further, the catalyst is one or more of dibutyltin dilaurate, stannous octoate, triethylene diamine, triethanolamine and dimorpholinyl diethyl ether; stannous octoate is preferred and the addition of catalyst regulates the synthesis reaction and the reaction and cure speed of the end use.
Further, the stabilizer is an antioxidant and/or a light stabilizer; preferably a complex of an antioxidant 1010 and an ultraviolet light absorber UV-327; the stabilizer has the functions of retarding the thermal oxidation of polyurethane, preventing the chain scission reaction of polymer induced by oxygen and improving the thermal oxidation resistance and light ageing resistance of the product.
Further, the aminosilane coupling agent is one or more of gamma-aminopropyltriethoxysilane KH-550, gamma-glycidoxypropyltrimethoxysilane KH-560 and gamma-aminopropyltrimethoxysilane KH-551; preferably, gamma-aminopropyltriethoxysilane KH-550 and gamma-glycidoxypropyltrimethoxysilane KH-560 are used in combination;
the introduction of the amino silane coupling agent reduces the surface tension and viscosity of an adhesive system, eliminates the water on the surface of an adherend, and improves the wettability of the adhesive to the adherend, thereby improving the bonding strength; the amino silane coupling agent also reacts with hydroxyl or oxide on the surface of an adherend, so that the surface property is changed, the hydrophilicity is changed into hydrophobicity, and the water resistance of the bonded glue layer is obviously improved; in addition, the bond energy of the silicon-oxygen bond is far greater than that of the carbon-carbon bond, and the introduction of silicon leads to improvement of heat resistance and heat stability.
According to a second aspect of the present invention, the preparation method of the reactive polyurethane hot melt adhesive for automobile interiors is characterized by comprising the following steps:
step 01, drying all the raw materials in vacuum, mixing polyester polyol with a stabilizer, heating, stirring, mixing and melting, and then drying and dehydrating in vacuum at 120-140 ℃ for 2.5 hours to obtain a mixture A;
step 02, adding the chain extender and the adhesion promoter into polyether polyol, stirring until the chain extender and the adhesion promoter are fully dissolved, and controlling the stirring speed to be 40-130 rpm; after full dissolution, vacuum dehydration is carried out at 105-110 ℃ until the water content is lower than 200ppM, and a mixture B is obtained;
step 03, mixing the mixture A and the mixture B, stirring at 100 ℃ until the mixture is uniformly mixed, and defoaming in a negative pressure state until no bubbles exist to obtain a mixture C;
step 04, cooling the mixture C to 75-90 ℃, adding isocyanate and an aminosilane coupling agent under the protection of nitrogen, stirring and reacting for 1.5 hours, and measuring the viscosity of the mixture C at 120 ℃ until the viscosity reaches 25000-30000 cps to obtain a mixture D;
and step 05, adding a catalyst into the mixture D, reacting for 30-60 minutes, discharging, sealing and packaging to obtain the reactive polyurethane hot melt adhesive for the automotive interior.
Compared with the prior art, the invention has the beneficial technical effects that: the reactive polyurethane hot melt adhesive for automotive interiors is safe and environment-friendly, and has excellent peeling strength and adhesion performance, and no solvent is volatilized in the production process; the preparation method of the reactive polyurethane hot melt adhesive for the automotive interior disclosed by the invention is stable in process and high in production efficiency.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
According to an embodiment of the first aspect of the invention:
example 1
The reactive polyurethane hot melt adhesive for the automotive interior comprises the following components in parts by weight:
35 parts of polypropylene glycol PPG;
35 parts of poly (hexamethylene adipate) glycol;
diphenylmethane-4, 4 diisocyanate 22 parts
2 parts of 1, 4-butanediol;
1 part of a stabilizer;
2 parts of an adhesion promoter;
2 parts of an aminosilane coupling agent;
0.5 part of catalyst.
Example 2
The reactive polyurethane hot melt adhesive for the automotive interior comprises the following components in parts by weight:
45 parts of polyethylene glycol (PEG);
24 parts of polyhexamethylene adipate;
diphenylmethane-4, 4 diisocyanate 23 parts
2 parts of 1, 4-butanediol;
1 part of trimethylolpropane
0.5 part of a stabilizer;
1.5 parts of adhesion promoter;
2.5 parts of an aminosilane coupling agent;
and 2 parts of a catalyst.
Example 3
The reactive polyurethane hot melt adhesive for the automotive interior comprises the following components in parts by weight:
57 parts of polytetrahydrofuran glycol;
20 parts of poly hexamethylene adipate glycol;
15 parts of toluene diisocyanate
2 parts of 1, 4-butanediol;
0.5 part of trimethylolpropane
1 part of a stabilizer;
1 part of adhesion promoter;
3 parts of an aminosilane coupling agent;
0.5 part of catalyst.
Example 4
The reactive polyurethane hot melt adhesive for the automotive interior comprises the following components in parts by weight:
49 parts of tetrahydrofuran-propylene oxide copolymerized glycol;
22 parts of polyethylene glycol adipate;
19.5 parts of diphenylmethane-4, 4 diisocyanate
2 parts of trimethylolpropane;
1 part of a stabilizer;
3 parts of an adhesion promoter;
2.5 parts of an aminosilane coupling agent;
1 part of catalyst.
According to a second aspect of the embodiment of the present invention, the reactive polyurethane hot melt adhesives for automobile interiors of the above-mentioned embodiments 1 to 4 were respectively prepared according to the following steps and respectively numbered as PU-1, PU-2, PU-3 and PU-4; the method comprises the following specific steps:
step 01, drying all the raw materials in vacuum, mixing polyester polyol with a stabilizer, heating, stirring, mixing and melting, and then drying and dehydrating in vacuum at 120-140 ℃ for 2.5 hours to obtain a mixture A;
step 02, adding the chain extender and the adhesion promoter into polyether polyol, stirring until the chain extender and the adhesion promoter are fully dissolved, and controlling the stirring speed to be 40-130 rpm; after full dissolution, vacuum dehydration is carried out at 105-110 ℃ until the water content is lower than 200ppM, and a mixture B is obtained;
step 03, mixing the mixture A and the mixture B, stirring at 100 ℃ until the mixture is uniformly mixed, and defoaming in a negative pressure state until no bubbles exist to obtain a mixture C;
step 04, cooling the mixture C to 75-90 ℃, adding isocyanate and an aminosilane coupling agent under the protection of nitrogen, stirring and reacting for 1.5 hours, and measuring the viscosity of the mixture C at 120 ℃ until the viscosity reaches 25000-30000 cps to obtain a mixture D;
and step 05, adding a catalyst into the mixture D, reacting for 30-60 minutes, discharging, sealing and packaging to obtain the reactive polyurethane hot melt adhesive for automotive interiors.
Comparative experiment:
setting a paint comparison experiment and numbering J1, respectively carrying out fabric composite tests on J1, PU-1, PU-2, PU-3 and PU-4, and testing the production efficiency and the product performance, wherein the test results are as follows:
TABLE 1 comparison of production efficiency and product Properties
As can be seen from Table 1, the reactive polyurethane hot melt adhesive for automotive interiors is safe and environment-friendly relative to solvent adhesives, has better peel strength, and can meet the requirements on adhesive performance; in addition, the production process is stable, and the production efficiency is obviously improved.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The reactive polyurethane hot melt adhesive for the automotive interior is characterized by comprising the following components in parts by weight:
30-60 parts of polyether polyol;
20-35 parts of polyester polyol;
15-23 parts of isocyanate
1-3 parts of a chain extender;
0.5-1 part of a stabilizer;
1-3 parts of an adhesion promoter;
2-3 parts of an aminosilane coupling agent;
0.5-2 parts of a catalyst.
2. The reactive polyurethane hot melt adhesive for automobile interiors according to claim 1, wherein the polyether polyol is one or more of polyoxypropylene glycol, polyethylene glycol, polytetrahydrofuran glycol and tetrahydrofuran-propylene oxide copolymerized glycol, and the molecular weight thereof is 400-4000.
3. The reactive polyurethane hot melt adhesive for automobile interiors according to claim 1, wherein the polyester polyol is one or more of polyhexamethylene adipate glycol, poly-epsilon-caprolactone polyol, polycarbonate diol and polyethylene adipate glycol, and the molecular weight thereof is 1000-.
4. The reactive polyurethane hot melt adhesive for automobile interiors according to claim 1, wherein the chain extender is one or more of ethylene glycol, propylene glycol, 1, 4-butanediol, hexanediol and trimethylolpropane.
5. The reactive polyurethane hot melt adhesive for automobile interiors according to claim 1, wherein the isocyanate is one or more of phenyl diisocyanate, diphenylmethane-4, 4 diisocyanate, 1,6 hexamethylene diisocyanate and isophorone diisocyanate.
6. The reactive polyurethane hot melt adhesive for automobile interiors according to claim 1, wherein the catalyst is one or more of dibutyltin dilaurate, stannous octoate, triethylene diamine, triethanolamine, and dimorpholinyl diethyl ether.
7. The reactive polyurethane hot melt adhesive for automotive interiors according to claim 1, wherein the stabilizer is an antioxidant and/or a light stabilizer.
8. The reactive polyurethane hot melt adhesive for automobile interiors, according to claim 1, wherein the aminosilane coupling agent is one or more of gamma-aminopropyltriethoxysilane KH-550, gamma-glycidoxypropyltrimethoxysilane KH-560, and gamma-aminopropyltrimethoxysilane KH-551.
9. The preparation method of the reactive polyurethane hot melt adhesive for automotive interiors, according to claim 1, is characterized by comprising the following steps:
step 01, drying all the raw materials in vacuum, mixing polyester polyol with a stabilizer, heating, stirring, mixing and melting, and then drying and dehydrating in vacuum at 120-140 ℃ for 2.5 hours to obtain a mixture A;
step 02, adding the chain extender and the adhesion promoter into polyether polyol, stirring until the chain extender and the adhesion promoter are fully dissolved, and controlling the stirring speed to be 40-130 rpm; after full dissolution, vacuum dehydration is carried out at 105-110 ℃ until the water content is lower than 200ppM, and a mixture B is obtained;
step 03, mixing the mixture A and the mixture B, stirring at 100 ℃ until the mixture is uniformly mixed, and defoaming in a negative pressure state until no bubbles exist to obtain a mixture C;
step 04, cooling the mixture C to 75-90 ℃, adding isocyanate and an aminosilane coupling agent under the protection of nitrogen, stirring and reacting for 1.5 hours, and measuring the viscosity of the mixture C at 120 ℃ until the viscosity reaches 25000-30000 cps to obtain a mixture D;
and step 05, adding a catalyst into the mixture D, reacting for 30-60 minutes, discharging, sealing and packaging to obtain the reactive polyurethane hot melt adhesive for the automotive interior.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010376020.4A CN111349416A (en) | 2020-05-07 | 2020-05-07 | Reactive polyurethane hot melt adhesive for automotive interior and preparation method thereof |
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| CN202010376020.4A CN111349416A (en) | 2020-05-07 | 2020-05-07 | Reactive polyurethane hot melt adhesive for automotive interior and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113234410A (en) * | 2021-05-18 | 2021-08-10 | 无锡莱恩科技有限公司 | Hollow glass based on single-component solvent-free hot melt adhesive and processing method thereof |
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| CN101760166A (en) * | 2009-12-22 | 2010-06-30 | 广州鹿山新材料股份有限公司 | Non-yellowing thermoplastic polyurethane hot melt adhesive and preparation method thereof |
| CN102336883A (en) * | 2011-07-14 | 2012-02-01 | 无锡市万力粘合材料有限公司 | Preparation method of reactive polyurethane hot melt adhesive for fabric lamination |
| CN104449535A (en) * | 2014-11-25 | 2015-03-25 | 上海天洋热熔粘接材料股份有限公司 | Preparation method for silane-modified moisture-curable polyurethane hot melt adhesive |
| CN104974707A (en) * | 2015-07-07 | 2015-10-14 | 上海天洋热熔粘接材料股份有限公司 | Wet cured polyurethane hot melt adhesive and preparation method thereof |
-
2020
- 2020-05-07 CN CN202010376020.4A patent/CN111349416A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760166A (en) * | 2009-12-22 | 2010-06-30 | 广州鹿山新材料股份有限公司 | Non-yellowing thermoplastic polyurethane hot melt adhesive and preparation method thereof |
| CN102336883A (en) * | 2011-07-14 | 2012-02-01 | 无锡市万力粘合材料有限公司 | Preparation method of reactive polyurethane hot melt adhesive for fabric lamination |
| CN104449535A (en) * | 2014-11-25 | 2015-03-25 | 上海天洋热熔粘接材料股份有限公司 | Preparation method for silane-modified moisture-curable polyurethane hot melt adhesive |
| CN104974707A (en) * | 2015-07-07 | 2015-10-14 | 上海天洋热熔粘接材料股份有限公司 | Wet cured polyurethane hot melt adhesive and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113234410A (en) * | 2021-05-18 | 2021-08-10 | 无锡莱恩科技有限公司 | Hollow glass based on single-component solvent-free hot melt adhesive and processing method thereof |
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Application publication date: 20200630 |
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