CN113480931A - Easily volatile waterborne polyurethane coating - Google Patents
Easily volatile waterborne polyurethane coating Download PDFInfo
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- CN113480931A CN113480931A CN202110845611.6A CN202110845611A CN113480931A CN 113480931 A CN113480931 A CN 113480931A CN 202110845611 A CN202110845611 A CN 202110845611A CN 113480931 A CN113480931 A CN 113480931A
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- parts
- toluene
- heating
- polyurethane coating
- volatile
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- 239000011527 polyurethane coating Substances 0.000 title claims abstract description 28
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 68
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 66
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims abstract description 51
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 41
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims abstract description 34
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000008096 xylene Substances 0.000 claims abstract description 25
- 239000000853 adhesive Substances 0.000 claims abstract description 23
- 230000001070 adhesive effect Effects 0.000 claims abstract description 23
- 239000002562 thickening agent Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims abstract description 17
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000001361 adipic acid Substances 0.000 claims abstract description 17
- 235000011037 adipic acid Nutrition 0.000 claims abstract description 17
- 239000008367 deionised water Substances 0.000 claims abstract description 17
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 17
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims abstract description 17
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims abstract description 17
- NQHJWFYVHSKTLX-UHFFFAOYSA-N phosphoric acid;toluene Chemical compound OP(O)(O)=O.CC1=CC=CC=C1 NQHJWFYVHSKTLX-UHFFFAOYSA-N 0.000 claims abstract description 17
- SRPWOOOHEPICQU-UHFFFAOYSA-N trimellitic anhydride Chemical compound OC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 SRPWOOOHEPICQU-UHFFFAOYSA-N 0.000 claims abstract description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229920005989 resin Polymers 0.000 claims abstract description 4
- 239000011347 resin Substances 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims abstract 4
- 238000010438 heat treatment Methods 0.000 claims description 56
- 238000006243 chemical reaction Methods 0.000 claims description 32
- 239000000243 solution Substances 0.000 claims description 31
- 238000003756 stirring Methods 0.000 claims description 30
- 238000001816 cooling Methods 0.000 claims description 24
- 238000012360 testing method Methods 0.000 claims description 17
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 10
- 239000004814 polyurethane Substances 0.000 claims description 10
- 229920002635 polyurethane Polymers 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 8
- 239000001569 carbon dioxide Substances 0.000 claims description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 8
- 230000018044 dehydration Effects 0.000 claims description 8
- 238000006297 dehydration reaction Methods 0.000 claims description 8
- 238000010790 dilution Methods 0.000 claims description 8
- 239000012895 dilution Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 8
- 238000006386 neutralization reaction Methods 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 8
- 238000005070 sampling Methods 0.000 claims description 8
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 6
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 239000002981 blocking agent Substances 0.000 claims description 2
- 125000005442 diisocyanate group Chemical group 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 238000000576 coating method Methods 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 abstract description 7
- 229920002873 Polyethylenimine Polymers 0.000 abstract description 2
- 239000003431 cross linking reagent Substances 0.000 abstract description 2
- 230000007062 hydrolysis Effects 0.000 abstract description 2
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 2
- 239000002649 leather substitute Substances 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 238000005034 decoration Methods 0.000 abstract 1
- 239000010985 leather Substances 0.000 description 17
- 239000003795 chemical substances by application Substances 0.000 description 7
- 230000007547 defect Effects 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 229920002050 silicone resin Polymers 0.000 description 6
- 239000004925 Acrylic resin Substances 0.000 description 5
- 229920000178 Acrylic resin Polymers 0.000 description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 229910052753 mercury Inorganic materials 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
-
- 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
- C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
- C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic groups
-
- 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
- C08G18/46—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen
- C08G18/4615—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen containing nitrogen
-
- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
- C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C11/00—Surface finishing of leather
- C14C11/003—Surface finishing of leather using macromolecular compounds
- C14C11/006—Surface finishing of leather using macromolecular compounds using polymeric products of isocyanates (or isothiocyanates) with compounds having active hydrogen
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- 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
- D06N3/128—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 silicon polymers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- 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
- D06N3/146—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 characterised by the macromolecular diols used
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- 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
- D06N3/147—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 characterised by the isocyanates used
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/108—Slipping, anti-blocking, low friction
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a volatile waterborne polyurethane coating, which comprises the following components in parts by weight: 15-45 parts of neopentyl glycol, 5-20 parts of adipic acid, 10-30 parts of trimellitic anhydride, 5-15 parts of tetraisopropyl titanate, 20-30 parts of xylene, 10-30 parts of acetone, 15-30 parts of 10% phosphoric acid (toluene) liquid, 10-20 parts of 50% phenol (toluene) liquid, 5-15 parts of N-toluene diethanolamine, 10-30 parts of triethylamine, 5-15 parts of ethylenediamine, 5-15 parts of organic silicon resin, 20-40 parts of an adhesive, 10-30 parts of a thickening agent and 10-30 parts of deionized water. The volatile waterborne polyurethane coating is added with the organic silicon resin, so that the adhesiveness between different base materials for synthetic leather and a polyurethane coating material can be enhanced, the coating decoration property and the adhesive force are correspondingly improved, the hydrolysis resistance and the smoothness feeling are brought, and the volatile waterborne polyurethane coating can replace a toxic polyaziridine crosslinking agent.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to an easily volatile waterborne polyurethane coating.
Background
The leather finishing agent is a general name of leather auxiliary agents for leather surface finishing protection and leather beautification, and is prepared by a film forming substance, a coloring material, a solvent and the auxiliary agents according to a certain proportion, wherein the film forming substance is the basis of the leather finishing agent. The leather finishing agent also has very important function in the leather manufacturing industry, can improve the leather beauty, prolong the leather using time, obviously improve the quality and grade of leather products and increase the trade value.
The existing leather finishing agent material usually selects acrylic resin, is the class with the largest usage amount in the world, has annual output accounting for about 70 percent of the leather finishing agent, and has more advantages compared with other chemical materials in the aspects of production cost, process and comprehensive performance, but the only defects are 'hot sticking and cold brittleness', leather can stick to skin at higher temperature, and leather folding is easy to crack at lower temperature, so that the leather is limited by weather conditions in use.
Therefore, the volatile waterborne polyurethane coating is needed to overcome the defects of hot sticking and cold brittleness of the acrylic resin coating agent.
Disclosure of Invention
The invention aims to provide the volatile waterborne polyurethane coating which has the advantages of good elasticity, low temperature resistance, folding resistance and the like and overcomes the defects of hot sticking and cold brittleness of an acrylic resin finishing agent aiming at the defects of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the volatile waterborne polyurethane coating comprises the following components in parts by weight: 15-45 parts of neopentyl glycol, 5-20 parts of adipic acid, 10-30 parts of trimellitic anhydride, 20-40 parts of adhesive, 5-15 parts of tetraisopropyl titanate, 20-30 parts of xylene, 10-30 parts of acetone, 15-30 parts of 10% phosphoric acid (toluene) solution, 10-20 parts of 50% phenol (toluene) solution, 5-15 parts of N-toluene diethanolamine, 10-30 parts of triethylamine, 5-15 parts of ethylenediamine and 10-30 parts of deionized water.
Furthermore, the adhesive is one or a mixture of more than one of 2, 2-dimethylolpropionic acid and diphenylmethane-4, 4' -diisocyanate.
Further, the volatile waterborne polyurethane coating comprises the following steps:
(1) adding neopentyl glycol, adipic acid, trimellitic anhydride and an adhesive into a reaction kettle according to a formula, introducing carbon dioxide gas, heating to 120 ℃, adding tetraisopropyl titanate, stirring and heating to 180 ℃;
(2) after reacting for 2h, sampling every 30min to test the acid value until reaching 79mg KOH/g and the hydroxyl value reaches 79.5, cooling to 130 ℃, adding dimethylbenzene, and heating to 150 ℃ for reflux dehydration;
(3) after the xylene is completely removed, vacuumizing to recover xylene, cooling to 80 ℃, adding acetone for dilution, keeping the temperature at 60 ℃, dropwise adding TDI for 1.5h, dropwise adding 10% of phosphoric acid (toluene) solution for stirring, heating to 70 ℃ for reaction (4-5) h, testing that free TDI is less than 0.2%, adding 50% of phenol (toluene) solution, heating to 80 ℃, reacting for 15min, heating to 90 ℃, distilling out 1/2 material amount of acetone, and keeping the temperature at 7 ℃ for later use;
(4) adding N-toluene diethanolamine, triethylamine, ethylenediamine and deionized water into the other reaction kettle with a rapid stirrer, and starting rapid stirring;
(5) slowly adding the above materials with the temperature of 70 ℃ into a reaction kettle, carrying out neutralization reaction at 60 ℃ for transparency, heating to 70 ℃, vacuumizing and decompressing, distilling out the rest acetone, cooling to 40 ℃, filtering, and discharging.
Further, the rotation speed of the stirring in the step (1) is 500-.
Further, the rotation speed of the stirring in the step (4) is 800-.
Further, the filtration in the step (5) is performed by using a 100-200-mesh filter bag.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adds the organic silicon resin, can enhance the adhesiveness between different base materials for synthetic leather and polyurethane coating materials, thereby correspondingly improving the coating property and the adhesive force, bringing about the hydrolysis resistance and the smooth feeling, and being capable of replacing the toxic polyaziridine cross-linking agent.
2. The waterborne polyurethane is a novel polyurethane system taking water as a dispersing medium instead of an organic solvent, and taking water as a solvent, so that the waterborne polyurethane is pollution-free, safe, reliable, excellent in mechanical property, good in compatibility and easy to modify; when the paint is used for coating leather, the leveling property is good, the film forming property is good, the covering power is strong, and the adhesion is firm. The leather after being coated has the advantages of good elasticity, low temperature resistance, folding resistance and the like, and overcomes the defects of hot sticking and cold brittleness of the acrylic resin coating agent.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the 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 embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: in this example, the volatile aqueous polyurethane coating is prepared from the following raw materials in parts by weight:
15 parts of neopentyl glycol, 5 parts of adipic acid, 10 parts of trimellitic anhydride, 5 parts of tetraisopropyl titanate, 20 parts of xylene, 10 parts of acetone, 15 parts of 10% phosphoric acid (toluene) solution, 10 parts of 50% phenol (toluene) solution, 5 parts of N-toluene diethanolamine, 10 parts of triethylamine, 5 parts of ethylenediamine, 5 parts of silicone resin, 20 parts of an adhesive, 10 parts of a thickener and 10 parts of deionized water;
wherein, the adhesive is 2, 2-dimethylolpropionic acid, the thickening agent is polyurethane thickening agent, and the synthesis is carried out by diisocyanate and polyethylene glycol in the presence of a blocking agent.
The preparation method comprises the following steps:
(1) adding neopentyl glycol, adipic acid, trimellitic anhydride and an adhesive into a reaction kettle according to a formula, introducing carbon dioxide gas, heating to 120 ℃, adding tetraisopropyl titanate, stirring and heating to 180 ℃;
(2) after reacting for 2h, sampling every 30min to test the acid value until reaching 79mg KOH/g and the hydroxyl value reaches 79.5, cooling to 130 ℃, adding dimethylbenzene, and heating to 150 ℃ for reflux dehydration;
(3) after the xylene is completely removed, vacuumizing to recover xylene, cooling to 80 ℃, adding acetone for dilution, keeping the temperature at 60 ℃, dropwise adding TDI for 1.5h, dropwise adding 10% of phosphoric acid (toluene) solution for stirring, heating to 70 ℃ for reaction (4-5) h, testing that free TDI is less than 0.2%, adding 50% of phenol (toluene) solution, heating to 80 ℃, reacting for 15min, heating to 90 ℃, distilling out 1/2 material amount of acetone, and keeping the temperature at 7 ℃ for later use;
(4) adding N-toluene diethanolamine, triethylamine, ethylenediamine and deionized water into the other reaction kettle with a rapid stirrer, and starting rapid stirring;
(5) slowly adding the above materials with the temperature of 70 ℃ into a reaction kettle, carrying out neutralization reaction at 60 ℃ for transparency, heating to 70 ℃, vacuumizing and decompressing, distilling out the rest acetone, cooling to 40 ℃, filtering, and discharging.
Example two: in this example, the volatile aqueous polyurethane coating is prepared from the following raw materials in parts by weight:
45 parts of neopentyl glycol, 20 parts of adipic acid, 30 parts of trimellitic anhydride, 15 parts of tetraisopropyl titanate, 30 parts of xylene, 30 parts of acetone, 30 parts of 10% phosphoric acid (toluene) solution, 20 parts of 50% phenol (toluene) solution, 15 parts of N-toluene diethanolamine, 30 parts of triethylamine, 15 parts of ethylenediamine, 15 parts of silicone resin, 40 parts of an adhesive, 30 parts of a thickener and 30 parts of deionized water;
wherein the adhesive is diphenylmethane-4, 4' -diisocyanate, and the thickener is polyurethane thickener.
The preparation method comprises the following steps:
(1) adding neopentyl glycol, adipic acid, trimellitic anhydride and an adhesive into a reaction kettle according to a formula, introducing carbon dioxide gas, heating to 120 ℃, adding tetraisopropyl titanate, stirring and heating to 180 ℃;
(2) after reacting for 2h, sampling every 30min to test the acid value until reaching 79mg KOH/g and the hydroxyl value reaches 79.5, cooling to 130 ℃, adding dimethylbenzene, and heating to 150 ℃ for reflux dehydration;
(3) after the xylene is completely removed, vacuumizing to recover xylene, cooling to 80 ℃, adding acetone for dilution, keeping the temperature at 60 ℃, dropwise adding TDI for 1.5h, dropwise adding 10% of phosphoric acid (toluene) solution for stirring, heating to 70 ℃ for reaction (4-5) h, testing that free TDI is less than 0.2%, adding 50% of phenol (toluene) solution, heating to 80 ℃, reacting for 15min, heating to 90 ℃, distilling out 1/2 material amount of acetone, and keeping the temperature at 7 ℃ for later use;
(4) adding N-toluene diethanolamine, triethylamine, ethylenediamine and deionized water into the other reaction kettle with a rapid stirrer, and starting rapid stirring;
(5) slowly adding the above materials with the temperature of 70 ℃ into a reaction kettle, carrying out neutralization reaction at 60 ℃ for transparency, heating to 70 ℃, vacuumizing and decompressing, distilling out the rest acetone, cooling to 40 ℃, filtering, and discharging.
Example three: in this example, the volatile aqueous polyurethane coating is prepared from the following raw materials in parts by weight:
17 parts of neopentyl glycol, 8 parts of adipic acid, 12 parts of trimellitic anhydride, 8 parts of tetraisopropyl titanate, 22 parts of xylene, 12 parts of acetone, 17 parts of 10% phosphoric acid (toluene) solution, 17 parts of 50% phenol (toluene) solution, 8 parts of N-toluene diethanolamine, 12 parts of triethylamine, 8 parts of ethylenediamine, 10 parts of silicone resin, 22 parts of binder, 12 parts of thickener and 12 parts of deionized water;
wherein the adhesive is a mixture of 2, 2-dimethylolpropionic acid and diphenylmethane-4, 4' -diisocyanate, and the thickener is a polyurethane thickener.
The preparation method comprises the following steps:
(1) adding neopentyl glycol, adipic acid, trimellitic anhydride and an adhesive into a reaction kettle according to a formula, introducing carbon dioxide gas, heating to 120 ℃, adding tetraisopropyl titanate, stirring and heating to 180 ℃;
(2) after reacting for 2h, sampling every 30min to test the acid value until reaching 79mg KOH/g and the hydroxyl value reaches 79.5, cooling to 130 ℃, adding dimethylbenzene, and heating to 150 ℃ for reflux dehydration;
(3) after the xylene is completely removed, vacuumizing to recover xylene, cooling to 80 ℃, adding acetone for dilution, keeping the temperature at 60 ℃, dropwise adding TDI for 1.5h, dropwise adding 10% of phosphoric acid (toluene) solution for stirring, heating to 70 ℃ for reaction (4-5) h, testing that free TDI is less than 0.2%, adding 50% of phenol (toluene) solution, heating to 80 ℃, reacting for 15min, heating to 90 ℃, distilling out 1/2 material amount of acetone, and keeping the temperature at 7 ℃ for later use;
(4) adding N-toluene diethanolamine, triethylamine, ethylenediamine and deionized water into the other reaction kettle with a rapid stirrer, and starting rapid stirring;
(5) slowly adding the above materials with the temperature of 70 ℃ into a reaction kettle, carrying out neutralization reaction at 60 ℃ for transparency, heating to 70 ℃, vacuumizing and decompressing, distilling out the rest acetone, cooling to 40 ℃, filtering, and discharging.
Example four: in this example, the volatile aqueous polyurethane coating is prepared from the following raw materials in parts by weight:
40 parts of neopentyl glycol, 15 parts of adipic acid, 25 parts of trimellitic anhydride, 10 parts of tetraisopropyl titanate, 25 parts of xylene, 25 parts of acetone, 25 parts of 10% phosphoric acid (toluene) solution, 15 parts of 50% phenol (toluene) solution, 10 parts of N-toluene diethanolamine, 25 parts of triethylamine, 10 parts of ethylenediamine, 5 parts of silicone resin, 35 parts of an adhesive, 25 parts of a thickener and 25 parts of deionized water;
wherein the adhesive is 2, 2-dimethylolpropionic acid, and the thickener is polyurethane thickener.
The preparation method comprises the following steps:
(1) adding neopentyl glycol, adipic acid, trimellitic anhydride and an adhesive into a reaction kettle according to a formula, introducing carbon dioxide gas, heating to 120 ℃, adding tetraisopropyl titanate, stirring and heating to 180 ℃;
(2) after reacting for 2h, sampling every 30min to test the acid value until reaching 79mg KOH/g and the hydroxyl value reaches 79.5, cooling to 130 ℃, adding dimethylbenzene, and heating to 150 ℃ for reflux dehydration;
(3) after the xylene is completely removed, vacuumizing to recover xylene, cooling to 80 ℃, adding acetone for dilution, keeping the temperature at 60 ℃, dropwise adding TDI for 1.5h, dropwise adding 10% of phosphoric acid (toluene) solution for stirring, heating to 70 ℃ for reaction (4-5) h, testing that free TDI is less than 0.2%, adding 50% of phenol (toluene) solution, heating to 80 ℃, reacting for 15min, heating to 90 ℃, distilling out 1/2 material amount of acetone, and keeping the temperature at 7 ℃ for later use;
(4) adding N-toluene diethanolamine, triethylamine, ethylenediamine and deionized water into the other reaction kettle with a rapid stirrer, and starting rapid stirring;
(5) slowly adding the above materials with the temperature of 70 ℃ into a reaction kettle, carrying out neutralization reaction at 60 ℃ for transparency, heating to 70 ℃, vacuumizing and decompressing, distilling out the rest acetone, cooling to 40 ℃, filtering, and discharging.
Example five: in this example, the volatile aqueous polyurethane coating is prepared from the following raw materials in parts by weight:
17 parts of neopentyl glycol, 8 parts of adipic acid, 12 parts of trimellitic anhydride, 8 parts of tetraisopropyl titanate, 22 parts of xylene, 12 parts of acetone, 17 parts of 10% phosphoric acid (toluene) solution, 17 parts of 50% phenol (toluene) solution, 8 parts of N-toluene diethanolamine, 12 parts of triethylamine, 8 parts of ethylenediamine, 5 parts of silicone resin, 22 parts of binder, 12 parts of thickener and 12 parts of deionized water;
wherein, the diphenylmethane-4, 4' -diisocyanate and the thickening agent are polyurethane thickening agents.
The preparation method comprises the following steps:
(1) adding neopentyl glycol, adipic acid, trimellitic anhydride and an adhesive into a reaction kettle according to a formula, introducing carbon dioxide gas, heating to 120 ℃, adding tetraisopropyl titanate, stirring and heating to 180 ℃;
(2) after reacting for 2h, sampling every 30min to test the acid value until reaching 79mg KOH/g and the hydroxyl value reaches 79.5, cooling to 130 ℃, adding dimethylbenzene, and heating to 150 ℃ for reflux dehydration;
(3) after the xylene is completely removed, vacuumizing to recover xylene, cooling to 80 ℃, adding acetone for dilution, keeping the temperature at 60 ℃, dropwise adding TDI for 1.5h, dropwise adding 10% of phosphoric acid (toluene) solution for stirring, heating to 70 ℃ for reaction (4-5) h, testing that free TDI is less than 0.2%, adding 50% of phenol (toluene) solution, heating to 80 ℃, reacting for 15min, heating to 90 ℃, distilling out 1/2 material amount of acetone, and keeping the temperature at 7 ℃ for later use;
(4) adding N-toluene diethanolamine, triethylamine, ethylenediamine and deionized water into the other reaction kettle with a rapid stirrer, and starting rapid stirring;
(5) slowly adding the above materials with the temperature of 70 ℃ into a reaction kettle, carrying out neutralization reaction at 60 ℃ for transparency, heating to 70 ℃, vacuumizing and decompressing, distilling out the rest acetone, cooling to 40 ℃, filtering, and discharging.
Comparative example one: the feed is prepared from the following raw materials in parts by weight:
5 parts by weight of neopentyl glycol, 5 parts by weight of adipic acid, 5 parts by weight of trimellitic anhydride, 5 parts by weight of tetraisopropyl titanate, 10 parts by weight of xylene, 10 parts by weight of acetone, 10 parts by weight of 10% phosphoric acid (toluene) solution, 10 parts by weight of 50% phenol (toluene) solution, 5 parts by weight of N-toluene diethanolamine, 20 parts by weight of triethylamine, 5 parts by weight of ethylenediamine, 20 parts by weight of silicone resin, 10 parts by weight of a binder, 10 parts by weight of a thickener, and 10 parts by weight of deionized water;
wherein the adhesive is a mixture of 2, 2-dimethylolpropionic acid and diphenylmethane-4, 4' -diisocyanate, and the thickener is a polyurethane thickener.
The preparation method comprises the following steps:
(1) adding neopentyl glycol, adipic acid, trimellitic anhydride and an adhesive into a reaction kettle according to a formula, introducing carbon dioxide gas, heating to 120 ℃, adding tetraisopropyl titanate, stirring and heating to 180 ℃;
(2) after reacting for 2h, sampling every 30min to test the acid value until reaching 79mg KOH/g and the hydroxyl value reaches 79.5, cooling to 130 ℃, adding dimethylbenzene, and heating to 150 ℃ for reflux dehydration;
(3) after the xylene is completely removed, vacuumizing to recover xylene, cooling to 80 ℃, adding acetone for dilution, keeping the temperature at 60 ℃, dropwise adding TDI for 1.5h, dropwise adding 10% of phosphoric acid (toluene) solution for stirring, heating to 70 ℃ for reaction (4-5) h, testing that free TDI is less than 0.2%, adding 50% of phenol (toluene) solution, heating to 80 ℃, reacting for 15min, heating to 90 ℃, distilling out 1/2 material amount of acetone, and keeping the temperature at 7 ℃ for later use;
(4) adding N-toluene diethanolamine, triethylamine, ethylenediamine and deionized water into the other reaction kettle with a rapid stirrer, and starting rapid stirring;
(5) slowly adding the above materials with the temperature of 70 ℃ into a reaction kettle, carrying out neutralization reaction at 60 ℃ for transparency, heating to 70 ℃, vacuumizing and decompressing, distilling out the rest acetone, cooling to 40 ℃, filtering, and discharging.
In addition, the test method of the volatile waterborne polyurethane coating comprises the following steps:
measurement of elasticity: the coatings in the examples were each scraped onto a wood board with a film scraper to a film thickness of 20 μm, the wet films were cured in a high-pressure mercury lamp, and after curing, they were stretched until they broke, and the stretched lengths were recorded.
And (3) low-temperature crease determination: the coating materials in the examples were each scraped onto a wood board with a film scraper to a film thickness of 20 μm, the wet film was cured in a high-pressure mercury lamp, and after curing, the cured film was refrigerated in a low-temperature cabinet and folded, and the number of folds corresponding to the occurrence of unrecoverable creases was recorded.
Measurement of stain resistance: the coating materials in examples were each scraped off a wood board with a film scraper to a film thickness of 20 μm, the wet film was cured in a high-pressure mercury lamp, and the surface of the cured film was drawn with an aqueous pen and wiped with a paper towel.
Measurement of volatilization speed: the coatings in the examples were each scraped to a wood panel with a film scraper to give a film thickness of 20Aμm, curing the wet film in a high pressure mercury lamp and recording the curing time.
The test results are shown in the following table:
| detecting items | Example one | Example two | EXAMPLE III | Example four | EXAMPLE five | Comparative example 1 |
| Elasticity (cm) | 5 | 10 | 8 | 5 | 5 | 3 |
| Low temperature crease mark (times) | 60 | 120 | 80 | 60 | 40 | 20 |
| Anti-fouling performance | Is easily wiped off | Is easily wiped off | Is easily wiped off | Is easily wiped off | Is easily wiped off | Is easily wiped off |
| Speed of volatilization(s) | 30 | 50 | 30 | 30 | 40 | 30 |
As can be seen from the table, the volatile aqueous polyurethane coating (examples 1-5) prepared by the invention can be directly cured to obtain an aqueous polyurethane coating which has the advantages of tensile elongation of more than 5cm, no crease after 40 times of folding at low temperature, water resistance, pen resistance and highest volatilization speed of 30 s. Therefore, the invention has the advantages of good elasticity, low temperature resistance, folding resistance and the like, and overcomes the defect of hot sticking and cold brittleness of the acrylic resin finishing agent.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. The volatile waterborne polyurethane coating is characterized by comprising the following components in parts by weight: 15-45 parts of neopentyl glycol, 5-20 parts of adipic acid, 10-30 parts of trimellitic anhydride, 5-15 parts of tetraisopropyl titanate, 20-30 parts of xylene, 10-30 parts of acetone, 15-30 parts of 10% phosphoric acid (toluene) liquid, 10-20 parts of 50% phenol (toluene) liquid, 5-15 parts of N-toluene diethanolamine, 10-30 parts of triethylamine, 5-15 parts of ethylenediamine, 5-15 parts of organic silicon resin, 20-40 parts of an adhesive, 10-30 parts of a thickening agent and 10-30 parts of deionized water.
2. The volatile aqueous polyurethane coating of claim 1, wherein: the adhesive is one or a mixture of more than one of 2, 2-dimethylolpropionic acid and diphenylmethane-4, 4' -diisocyanate.
3. The volatile aqueous polyurethane coating of claim 1, wherein: the thickening agent is polyurethane thickening agent, and is synthesized by diisocyanate and polyethylene glycol in the presence of a blocking agent.
4. The volatile aqueous polyurethane coating of claim 1, wherein: the volatile waterborne polyurethane coating comprises the following steps:
(1) adding neopentyl glycol, adipic acid, trimellitic anhydride and an adhesive into a reaction kettle according to a formula, introducing carbon dioxide gas, heating to 120 ℃, adding tetraisopropyl titanate, stirring and heating to 180 ℃;
(2) after reacting for 2h, sampling every 30min to test the acid value until reaching 79mg KOH/g and the hydroxyl value reaches 79.5, cooling to 130 ℃, adding dimethylbenzene, and heating to 150 ℃ for reflux dehydration;
(3) after the xylene is completely removed, vacuumizing to recover xylene, cooling to 80 ℃, adding acetone for dilution, keeping the temperature at 60 ℃, dropwise adding TDI for 1.5h, dropwise adding 10% of phosphoric acid (toluene) solution for stirring, heating to 70 ℃ for reaction (4-5) h, testing that free TDI is less than 0.2%, adding 50% of phenol (toluene) solution, heating to 80 ℃, reacting for 15min, heating to 90 ℃, distilling out 1/2 material amount of acetone, and keeping the temperature at 7 ℃ for later use;
(4) adding N-toluene diethanolamine, triethylamine, ethylenediamine and deionized water into the other reaction kettle with a rapid stirrer, and starting rapid stirring;
(5) slowly adding the above materials with the temperature of 70 ℃ into a reaction kettle, carrying out neutralization reaction at 60 ℃ for transparency, heating to 70 ℃, vacuumizing and decompressing, distilling out the rest acetone, cooling to 40 ℃, filtering, and discharging.
5. The volatile aqueous polyurethane coating of claim 4, wherein: the rotating speed of the stirring in the step (1) is 500-800r/min, and the stirring time is 25-30 min.
6. The volatile aqueous polyurethane coating of claim 4, wherein: the rotating speed of the stirring in the step (4) is 800-1200r/min, and the stirring time is 30-45 min.
7. The volatile aqueous polyurethane coating of claim 4, wherein: and (5) filtering by using a filter bag with 100 meshes and 200 meshes.
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| CN114702889A (en) * | 2022-05-12 | 2022-07-05 | 广东家实多集团有限公司 | Waterborne polyurethane coating |
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