CN112266757A - Preparation method of easy-stripping type polyurethane adhesive - Google Patents
Preparation method of easy-stripping type polyurethane adhesive Download PDFInfo
- Publication number
- CN112266757A CN112266757A CN202011244137.3A CN202011244137A CN112266757A CN 112266757 A CN112266757 A CN 112266757A CN 202011244137 A CN202011244137 A CN 202011244137A CN 112266757 A CN112266757 A CN 112266757A
- Authority
- CN
- China
- Prior art keywords
- polyurethane adhesive
- easy
- component
- stripping
- reaction
- 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.)
- Withdrawn
Links
Classifications
-
- 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
-
- 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
-
- 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
- C08G18/4244—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups
- C08G18/4247—Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups derived from polyols containing at least one ether group and polycarboxylic acids
-
- 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
- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
- C08G18/5024—Polyethers having heteroatoms other than oxygen having nitrogen containing primary and/or secondary amino groups
Abstract
The invention provides a preparation method of an easy-stripping polyurethane adhesive. The method comprises the following steps: taking dopamine modified polyether polyol to be put into a dry and clean three-neck flask, and dehydrating for 2-3h in vacuum at the temperature of 100 ℃ and 120 ℃; cooling to 50 deg.C, adding isocyanate, slowly heating to 75-85 deg.C, introducing N2Performing protective reaction for 2-3h to obtain a component A of a polyurethane adhesive end isocyanate prepolymer; adding modified polyester polyol into a dry and clean three-neck flask, dehydrating for 2-3h in vacuum at the temperature of 100-110 ℃, cooling to 55 ℃, and adding a silane coupling agent to obtain a component B of the polyurethane adhesive; and mixing the component A and the component B, and uniformly stirring to obtain the easy-stripping polyurethane adhesive. The easy-stripping type polyurethane adhesiveHas the advantages of good molding property and easy stripping of the adhesive film.
Description
Technical Field
The invention relates to the field of new materials, in particular to a preparation method of an easy-stripping polyurethane adhesive.
Background
The polyurethane adhesive is an adhesive which contains urethane group (-NHCOO-) and/or isocyanate group (-NCO) in a molecular chain and has high polarity and activity. It is easy to react with compound containing active hydrogen, has the advantages of fast curing, high adhesion strength, good flexibility, water resistance, oil resistance, wear resistance and the like, is widely applied to national economy, and is one of eight important varieties in synthetic adhesives. The bi-component polyurethane adhesive has the designability of high curing speed and performance, and the bonding layer can be adjusted from flexibility to rigidity at will so as to meet the bonding requirements of different materials, thereby having good development prospect.
However, the currently prepared polyurethane adhesive is not easy to peel off in the using process, adhesive residues are easy to occur after peeling off, and the fastness is obviously reduced when the polyurethane adhesive is repeatedly used, so that the using of the polyurethane adhesive is influenced.
Disclosure of Invention
The technical problem to be solved is as follows: the invention aims to provide an easy-stripping polyurethane adhesive which has the advantages of good moldability and easy stripping of an adhesive film.
The technical scheme is as follows: the preparation method of the easy-stripping polyurethane adhesive comprises the following steps:
(1) taking dopamine modified polyether polyol to be put into a dry and clean three-neck flask, and dehydrating for 2-3h in vacuum at the temperature of 100 ℃ and 120 ℃;
(2) cooling to 50 deg.C, adding isocyanate, slowly heating to 75-85 deg.C, introducing N2Performing protective reaction for 2-3h to obtain a component A of a polyurethane adhesive end isocyanate prepolymer;
(3) adding modified polyester polyol into a dry and clean three-neck flask, dehydrating for 2-3h in vacuum at the temperature of 100-110 ℃, cooling to 55 ℃, and adding a silane coupling agent to obtain a component B of the polyurethane adhesive;
(4) and mixing the component A and the component B, and uniformly stirring to obtain the easy-stripping polyurethane adhesive.
Further, the preparation method of the dopamine modified polyether polyol comprises the following steps:
the first step is as follows: under the protection of nitrogen, 0.262g of polyether polyol and 0.6g of dimethylamine are dissolved in 8mL of dichloromethane/dimethylformamide mixed solution;
the second step is that: adding 0.202g of dichloroethane, 0.038g of 1-hydroxybenzotriazole and 0.08g of triethylamine, and reacting at room temperature for 12 hours;
the third step: the reaction solution was repeatedly washed with n-hexane and vacuum dried at 50 ℃ for 24 hours.
Further, the polyether polyol is one or more of polyoxypropylene diol, polytetrahydrofuran diol, tetrahydrofuran-propylene oxide copolymer diol and polytetrahydrofuran polyol.
Further, the volume ratio of the dichloromethane to the dimethylformamide is 1: 1.
Further, the preparation method of the modified polyester polyol comprises the following steps:
the first step is as follows: taking diethylene glycol, adding phthalic anhydride and a catalyst under the stirring state, and introducing N2Gradually heating to 120 deg.C, and maintaining for 30 min;
the second step is that: continuously heating to 160-170 ℃ and maintaining the reaction for 25-30 min;
the third step: then the temperature is increased to 180 ℃ and 230 ℃, and the reaction is carried out for 5-6 h.
Further, the mass ratio of the diethylene glycol to the phthalic anhydride is 1.1-1.3: 1.
Furthermore, the stirring speed needs to be controlled well in the reaction process of the third step, so that the phenomenon that the materials are washed due to too fast reaction is avoided.
Furthermore, the adhesive needs to be subjected to corona treatment after use.
Has the advantages that:
1. dopamine is a small molecular substance, can modify polyether polyol, greatly improves the adhesiveness, hydrophilicity and biocompatibility of the polyether polyol, and provides a simple and easy method for modifying the easy-stripping polyurethane adhesive.
2. The modified polyester polyol has a rigid trifunctional aromatic ring structure, but has certain flexibility due to the fact that the modified polyester polyol contains a flexible methylene chain segment, so that the adhesive disclosed by the invention has good mechanical strength on one hand, and is easy to peel on the other hand.
3. The easy-stripping polyurethane adhesive has the advantages of good moldability and easy stripping of an adhesive film.
Detailed Description
Example 1
The preparation method of the easy-stripping polyurethane adhesive comprises the following steps:
(1) taking dopamine modified polyether polyol, placing the dopamine modified polyether polyol in a dry and clean three-neck flask, and dehydrating for 2 hours in vacuum at the temperature of 100 ℃;
(2) cooling to 50 deg.C, adding isocyanate, slowly heating to 75 deg.C, introducing N2And performing protective reaction for 2 hours to obtain the polyurethaneA component A of ester adhesive end isocyanate prepolymer;
(3) adding modified polyester polyol into a dry and clean three-neck flask, dehydrating for 2h in vacuum at 100 ℃, cooling to 55 ℃, and adding a silane coupling agent to obtain a component B of the polyurethane adhesive;
(4) and mixing the component A and the component B, and uniformly stirring to obtain the easy-stripping polyurethane adhesive.
The preparation method of the dopamine modified polyether polyol comprises the following steps:
the first step is as follows: under the protection of nitrogen, 0.262g of polyoxypropylene glycol and 0.6g of dimethylamine are dissolved in a mixed solution of 4mL of dichloromethane and 4mL of dimethylformamide;
the second step is that: adding 0.202g of dichloroethane, 0.038g of 1-hydroxybenzotriazole and 0.08g of triethylamine, and reacting at room temperature for 12 hours; the third step: the reaction solution was repeatedly washed with n-hexane and vacuum dried at 50 ℃ for 24 hours.
The preparation method of the modified polyester polyol comprises the following steps:
the first step is as follows: taking diethylene glycol, adding phthalic anhydride and a catalyst under the stirring state, and introducing N2Gradually heating to 120 ℃, and keeping for 30min, wherein the mass ratio of the diglycol to the phthalic anhydride is 1.1: 1;
the second step is that: continuously heating to 160 ℃ and maintaining the reaction for 25 min;
the third step: and then heating to 180 ℃, and reacting for 5 hours to obtain the product, wherein the stirring speed needs to be controlled in the reaction process, so that the phenomenon of material flushing due to too fast reaction is avoided. The surface drying time of the adhesive in this embodiment is 9min, the moldability is good, corona treatment is adopted after film formation, and the peel force F ═ 2.3347N and the peel strength σ ═ 0.0569kN/m of the easy-peel polyurethane adhesive prepared by this embodiment are measured according to the method of GB/T2792-2014, so that the adhesive in this embodiment is easy to peel and there is no adhesive residue after peeling.
The physical and mechanical properties of the adhesive film are as follows:
| tensile Strength (MPa) | 12.59 |
| Elongation at Break (%) | 765 |
。
Example 2
The preparation method of the easy-stripping polyurethane adhesive comprises the following steps:
(1) taking dopamine modified polyether polyol, putting the dopamine modified polyether polyol into a dry and clean three-neck flask, and dehydrating for 2.5 hours in vacuum at the temperature of 110 ℃;
(2) cooling to 50 deg.C, adding isocyanate, slowly heating to 80 deg.C, introducing N2Performing protection reaction for 2.5 hours to obtain a component A of a polyurethane adhesive end isocyanate prepolymer;
(3) adding modified polyester polyol into a dry and clean three-neck flask, dehydrating for 2.5h under vacuum at 105 ℃, cooling to 55 ℃, and adding a silane coupling agent to obtain a component B of the polyurethane adhesive;
(4) and mixing the component A and the component B, and uniformly stirring to obtain the easy-stripping polyurethane adhesive.
The preparation method of the dopamine modified polyether polyol comprises the following steps:
the first step is as follows: under the protection of nitrogen, 0.262g of polytetrahydrofuran diol and 0.6g of dimethylamine are dissolved in a mixed solution of 4mL of dichloromethane and 4mL of dimethylformamide;
the second step is that: adding 0.202g of dichloroethane, 0.038g of 1-hydroxybenzotriazole and 0.08g of triethylamine, and reacting at room temperature for 12 hours;
the third step: the reaction solution was repeatedly washed with n-hexane and vacuum dried at 50 ℃ for 24 hours.
The preparation method of the modified polyester polyol comprises the following steps:
the first step is as follows: taking diethylene glycol, adding phthalic anhydride and a catalyst under the stirring state, and introducing N2Gradually heating to 120 deg.C, and maintaining for 30minThe quantity ratio is 1.2: 1;
the second step is that: continuously heating to 165 ℃ and maintaining the reaction for 27 min;
the third step: and then heating to 200 ℃, and reacting for 5.5 hours to obtain the product, wherein the stirring speed needs to be controlled well in the reaction process, so that the phenomenon of material flushing due to too fast reaction is avoided. The surface drying time of the adhesive in this embodiment is 9min, the moldability is good, the adhesive is processed by corona after film formation, and the peel force F of the easy-peel polyurethane adhesive prepared by this embodiment is 2.2139N and the peel strength σ is 0.0565kN/m, which are measured by the method of GB/T2792-2014, so that the adhesive in this embodiment is easy to peel and has no adhesive residue after peeling.
The physical and mechanical properties of the adhesive film are as follows:
| tensile Strength (MPa) | 12.87 |
| Elongation at Break (%) | 778 |
。
Example 3
The preparation method of the easy-stripping polyurethane adhesive comprises the following steps:
(1) taking dopamine modified polyether polyol, putting the dopamine modified polyether polyol into a dry and clean three-neck flask, and dehydrating for 2.5 hours in vacuum at the temperature of 110 ℃;
(2) cooling to 50 deg.C, adding isocyanate, slowly heating to 80 deg.C, introducing N2Performing protection reaction for 2.5 hours to obtain a component A of a polyurethane adhesive end isocyanate prepolymer;
(3) adding modified polyester polyol into a dry and clean three-neck flask, dehydrating for 2.5h under vacuum at 105 ℃, cooling to 55 ℃, and adding a silane coupling agent to obtain a component B of the polyurethane adhesive;
(4) and mixing the component A and the component B, and uniformly stirring to obtain the easy-stripping polyurethane adhesive.
The preparation method of the dopamine modified polyether polyol comprises the following steps:
the first step is as follows: under the protection of nitrogen, 0.262g of tetrahydrofuran-propylene oxide copolyol and 0.6g of dimethylamine are dissolved in a mixed solution of 4mL of dichloromethane and 4mL of dimethylformamide;
the second step is that: adding 0.202g of dichloroethane, 0.038g of 1-hydroxybenzotriazole and 0.08g of triethylamine, and reacting at room temperature for 12 hours;
the third step: the reaction solution was repeatedly washed with n-hexane and vacuum dried at 50 ℃ for 24 hours.
The preparation method of the modified polyester polyol comprises the following steps:
the first step is as follows: taking diethylene glycol, adding phthalic anhydride and a catalyst under the stirring state, and introducing N2Gradually heating to 120 ℃, and keeping for 30min, wherein the mass ratio of the diglycol to the phthalic anhydride is 1.2: 1;
the second step is that: continuously heating to 165 ℃ and maintaining the reaction for 29 min;
the third step: and then heating to 210 ℃, and reacting for 5.5 hours to obtain the product, wherein the stirring speed needs to be controlled well in the reaction process, so that the phenomenon of material flushing due to too fast reaction is avoided. The surface drying time of the adhesive in this embodiment is 9min, the moldability is good, the adhesive is processed by corona after film formation, and the peel force F ═ 2.2158N and the peel strength σ ═ 0.0569kN/m of the easy-peel polyurethane adhesive prepared by this embodiment are measured according to the method of GB/T2792-2014, so that the adhesive in this embodiment is easy to peel and there is no adhesive residue after peeling.
The physical and mechanical properties of the adhesive film are as follows:
| tensile Strength (MPa) | 12.92 |
| Elongation at break (%) | 776 |
。
Example 4
The preparation method of the easy-stripping polyurethane adhesive comprises the following steps:
(1) taking dopamine modified polyether polyol, placing the dopamine modified polyether polyol in a dry and clean three-neck flask, and dehydrating for 3 hours in vacuum at the temperature of 120 ℃;
(2) cooling to 50 deg.C, adding isocyanate, slowly heating to 85 deg.C, introducing N2Performing protection reaction for 3 hours to obtain a component A of a polyurethane adhesive end isocyanate prepolymer;
(3) adding modified polyester polyol into a dry and clean three-neck flask, dehydrating for 3h under vacuum at 110 ℃, cooling to 55 ℃, and adding a silane coupling agent to obtain a component B of the polyurethane adhesive;
(4) and mixing the component A and the component B, and uniformly stirring to obtain the easy-stripping polyurethane adhesive.
The preparation method of the dopamine modified polyether polyol comprises the following steps:
the first step is as follows: under the protection of nitrogen, 0.262g of polytetrahydrofuran polyalcohol and 0.6g of dimethylamine are dissolved in a mixed solution of 4mL of dichloromethane and 4mL of dimethylformamide;
the second step is that: adding 0.202g of dichloroethane, 0.038g of 1-hydroxybenzotriazole and 0.08g of triethylamine, and reacting at room temperature for 12 hours;
the third step: the reaction solution was repeatedly washed with n-hexane and vacuum dried at 50 ℃ for 24 hours.
The preparation method of the modified polyester polyol comprises the following steps:
the first step is as follows: taking diethylene glycol, adding phthalic anhydride and a catalyst under the stirring state, and introducing N2Gradually heating to 120 ℃, and keeping for 30min, wherein the mass ratio of the diglycol to the phthalic anhydride is 1.3: 1;
the second step is that: continuously heating to 170 ℃ and maintaining the reaction for 30 min;
the third step: and then heating to-230 ℃, and reacting for 6 hours to obtain the product, wherein the stirring speed needs to be controlled in the reaction process, so that the phenomenon of material flushing due to too fast reaction is avoided. The surface drying time of the adhesive in this embodiment is 9min, the moldability is good, the adhesive is processed by corona after film formation, and the peel force F ═ 2.1214N and the peel strength σ ═ 0.0553kN/m of the easy-peel polyurethane adhesive prepared by this embodiment are measured according to the method of GB/T2792-2014, so that the adhesive in this embodiment is easy to peel and there is no adhesive residue after peeling.
The physical and mechanical properties of the adhesive film are as follows:
| tensile Strength (MPa) | 12.81 |
| Elongation at Break (%) | 781 |
。
Claims (8)
1. The preparation method of the easy-stripping polyurethane adhesive is characterized by comprising the following steps:
(1) taking dopamine modified polyether polyol to be put into a dry and clean three-neck flask, and dehydrating for 2-3h in vacuum at the temperature of 100 ℃ and 120 ℃;
(2) cooling to 50 deg.C, adding isocyanate, slowly heating to 75-85 deg.C, introducing N2Performing protective reaction for 2-3h to obtain a component A of a polyurethane adhesive end isocyanate prepolymer;
(3) adding modified polyester polyol into a dry and clean three-neck flask, dehydrating for 2-3h in vacuum at the temperature of 100-110 ℃, cooling to 55 ℃, and adding a silane coupling agent to obtain a component B of the polyurethane adhesive;
(4) and mixing the component A and the component B, and uniformly stirring to obtain the easy-stripping polyurethane adhesive.
2. The easy release polyurethane adhesive of claim 1, wherein the dopamine modified polyether polyol is prepared by:
the first step is as follows: under the protection of nitrogen, 0.262g of polyether polyol and 0.6g of dimethylamine are dissolved in 8mL of dichloromethane/dimethylformamide mixed solution;
the second step is that: adding 0.202g of dichloroethane, 0.038g of 1-hydroxybenzotriazole and 0.08g of triethylamine, and reacting at room temperature for 12 hours;
the third step: the reaction solution was repeatedly washed with n-hexane and vacuum dried at 50 ℃ for 24 hours.
3. The easy-release polyurethane adhesive according to claim 2, wherein the polyether polyol is one or more selected from polyoxypropylene glycol, polytetrahydrofuran glycol, tetrahydrofuran-oxypropylene copolymer glycol, and polytetrahydrofuran polyol.
4. The easy release polyurethane adhesive of claim 2, wherein the volume ratio of dichloromethane/dimethylformamide is 1: 1.
5. The easy-release polyurethane adhesive according to claim 1, wherein the modified polyester polyol is prepared by the following method:
the first step is as follows: taking diethylene glycol, adding phthalic anhydride and a catalyst under the stirring state, and introducing N2Gradually heating to 120 deg.C, and maintaining for 30 min;
the second step is that: continuously heating to 160-170 ℃ and maintaining the reaction for 25-30 min;
the third step: then the temperature is increased to 180 ℃ and 230 ℃, and the reaction is carried out for 5-6 h.
6. The easy release polyurethane adhesive of claim 5, wherein the mass ratio of diethylene glycol to phthalic anhydride is 1.1-1.3: 1.
7. The easy-release polyurethane adhesive according to claim 5, wherein the stirring speed is controlled during the third reaction step to avoid too fast flushing.
8. The easy release polyurethane adhesive of claim 1, wherein the adhesive is corona treated after use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011244137.3A CN112266757A (en) | 2020-11-10 | 2020-11-10 | Preparation method of easy-stripping type polyurethane adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011244137.3A CN112266757A (en) | 2020-11-10 | 2020-11-10 | Preparation method of easy-stripping type polyurethane adhesive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112266757A true CN112266757A (en) | 2021-01-26 |
Family
ID=74340934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011244137.3A Withdrawn CN112266757A (en) | 2020-11-10 | 2020-11-10 | Preparation method of easy-stripping type polyurethane adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112266757A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108559440A (en) * | 2018-04-27 | 2018-09-21 | 上海回天新材料有限公司 | A kind of no-solvent type polyurethane laminating adhesive and its preparation method and application of high speed compound, rapid aging |
| CN108559435A (en) * | 2018-04-27 | 2018-09-21 | 上海回天新材料有限公司 | A kind of and excellent no-solvent type polyurethane laminating adhesive and its preparation method and application of polyurethane ink matching |
| CN110257000A (en) * | 2019-06-28 | 2019-09-20 | 北京知淘科技有限责任公司 | A kind of back panel of solar photovoltaic module adhesive and preparation method thereof |
| CN110343469A (en) * | 2018-04-03 | 2019-10-18 | 英济股份有限公司 | Adhesive and preparation method thereof |
| CN111484423A (en) * | 2020-05-06 | 2020-08-04 | 东莞市竤穗实业投资有限公司 | Dopamine-containing diol and modified aqueous polyurethane dispersion thereof, and preparation method and application thereof |
| CN111777759A (en) * | 2019-04-04 | 2020-10-16 | 江苏苏博特新材料股份有限公司 | Catechol compound modified polyether, preparation method thereof and application thereof in improving adhesive bonding strength |
| WO2020217023A1 (en) * | 2019-04-26 | 2020-10-29 | Bostik Sa | Lamination adhesive for sterilisation |
-
2020
- 2020-11-10 CN CN202011244137.3A patent/CN112266757A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343469A (en) * | 2018-04-03 | 2019-10-18 | 英济股份有限公司 | Adhesive and preparation method thereof |
| CN108559440A (en) * | 2018-04-27 | 2018-09-21 | 上海回天新材料有限公司 | A kind of no-solvent type polyurethane laminating adhesive and its preparation method and application of high speed compound, rapid aging |
| CN108559435A (en) * | 2018-04-27 | 2018-09-21 | 上海回天新材料有限公司 | A kind of and excellent no-solvent type polyurethane laminating adhesive and its preparation method and application of polyurethane ink matching |
| CN111777759A (en) * | 2019-04-04 | 2020-10-16 | 江苏苏博特新材料股份有限公司 | Catechol compound modified polyether, preparation method thereof and application thereof in improving adhesive bonding strength |
| WO2020217023A1 (en) * | 2019-04-26 | 2020-10-29 | Bostik Sa | Lamination adhesive for sterilisation |
| CN110257000A (en) * | 2019-06-28 | 2019-09-20 | 北京知淘科技有限责任公司 | A kind of back panel of solar photovoltaic module adhesive and preparation method thereof |
| CN111484423A (en) * | 2020-05-06 | 2020-08-04 | 东莞市竤穗实业投资有限公司 | Dopamine-containing diol and modified aqueous polyurethane dispersion thereof, and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郭汝轩: ""苯酐聚酯多元醇合成研究及在聚氨酯胶黏剂中的应用"", 《精细与专用化学品》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100480349C (en) | Method for preparing modified aqueous adhesion agent of polyurethane | |
| CN108467472B (en) | Solvent-free polyurethane resin and application thereof in high-peel-strength aqueous/solvent-free polyurethane synthetic leather | |
| CN109852326B (en) | Polyurethane hot-melt adhesive containing oxime urethane dynamic bond and preparation method thereof | |
| CN101182406A (en) | Method for preparing multiple modified self-crosslinking aqueous polyurethane adhesive agent | |
| CN106397722A (en) | Carbon fiber modified non-solvent polyurethane surface layer resin for sports shoe leather, as well as preparation method and application of carbon fiber modified non-solvent polyurethane surface layer resin | |
| CN112625213B (en) | Solvent-free blocked polyurethane resin composition, polyurethane material and leather product | |
| TW201139483A (en) | Urethane prepolymer | |
| CN112239530A (en) | Novel method for preparing hydrophobic self-healing super-elastic polyurethane elastomer | |
| CN113651938A (en) | Solvent-free polyurethane with self-repairing function and preparation method thereof | |
| CN110982027A (en) | Polyurethane composition for CL-20 explosive cladding and preparation method thereof | |
| CN115124967B (en) | Epoxy modified vegetable oil-based bi-component polyurethane laminating adhesive and preparation method and application thereof | |
| CN1816579A (en) | Polyurethane resins and process for production thereof | |
| TW200304450A (en) | Thermosetting polyurethane elastomer composition, polyurethane elastomer and process for production thereof | |
| CN111675961B (en) | Photocuring polyurethane primer and preparation method thereof | |
| CN112266757A (en) | Preparation method of easy-stripping type polyurethane adhesive | |
| CN111234168B (en) | Nonionic neutralizer and preparation method thereof, waterborne polyurethane and preparation method and application thereof | |
| CN114958275B (en) | PU adhesive for fabric bonding and preparation method thereof | |
| CN115232591B (en) | Reactive polyurethane hot melt adhesive and preparation method thereof | |
| CN114426805B (en) | Preparation method of hydrolysis-resistant polyurethane hot melt adhesive | |
| CN107903371A (en) | A kind of high-temperature self-crosslinking modified aqueous polyurethane resin and preparation method thereof | |
| CN115029055A (en) | Weather-resistant modified polyurethane waterproof coating and preparation method thereof | |
| CN109749403B (en) | Polyureide elastomer and preparation method and application thereof | |
| TWI728243B (en) | Polyurethane resin, use thereof, and artificial leather comprising the same and method of producing artificial leather | |
| JP6485726B1 (en) | Synthetic leather manufacturing method | |
| CN111004152A (en) | Environment-friendly polyurethane chain extender and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210126 |
|
| WW01 | Invention patent application withdrawn after publication |