CN102070768B - Water-soluble polyurethane for wood lacquer and preparation method thereof - Google Patents
Water-soluble polyurethane for wood lacquer and preparation method thereof Download PDFInfo
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- 239000004814 polyurethane Substances 0.000 title claims abstract description 26
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 25
- 239000002023 wood Substances 0.000 title claims abstract description 15
- 239000004922 lacquer Substances 0.000 title claims abstract description 14
- 238000002360 preparation method Methods 0.000 title abstract description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 40
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- RXKJFZQQPQGTFL-UHFFFAOYSA-N dihydroxyacetone Chemical compound OCC(=O)CO RXKJFZQQPQGTFL-UHFFFAOYSA-N 0.000 claims abstract description 12
- IBVAQQYNSHJXBV-UHFFFAOYSA-N adipic acid dihydrazide Chemical compound NNC(=O)CCCCC(=O)NN IBVAQQYNSHJXBV-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000008367 deionised water Substances 0.000 claims abstract description 11
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 11
- 239000005058 Isophorone diisocyanate Substances 0.000 claims abstract description 10
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims abstract description 10
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 16
- NSOXQYCFHDMMGV-UHFFFAOYSA-N Tetrakis(2-hydroxypropyl)ethylenediamine Chemical compound CC(O)CN(CC(C)O)CCN(CC(C)O)CC(C)O NSOXQYCFHDMMGV-UHFFFAOYSA-N 0.000 claims description 12
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000004821 distillation Methods 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- 239000002585 base Substances 0.000 claims 2
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims 1
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims 1
- 238000004132 cross linking Methods 0.000 abstract description 10
- 239000003054 catalyst Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 abstract description 2
- 239000004815 dispersion polymer Substances 0.000 abstract description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 abstract 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 abstract 1
- 229940120503 dihydroxyacetone Drugs 0.000 abstract 1
- 150000002009 diols Chemical class 0.000 abstract 1
- 229920000515 polycarbonate Polymers 0.000 abstract 1
- 239000004417 polycarbonate Substances 0.000 abstract 1
- 229920003009 polyurethane dispersion Polymers 0.000 abstract 1
- 235000019260 propionic acid Nutrition 0.000 abstract 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 11
- 238000000576 coating method Methods 0.000 description 11
- 239000003973 paint Substances 0.000 description 10
- 239000011248 coating agent Substances 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- 239000004970 Chain extender Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000012296 anti-solvent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004581 coalescence Methods 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 125000005474 octanoate group Chemical group 0.000 description 2
- 239000011527 polyurethane coating Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000005667 attractant Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- -1 carbon ester Chemical class 0.000 description 1
- 230000031902 chemoattractant activity Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008387 emulsifying waxe Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000009775 high-speed stirring Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000010773 plant oil Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- BNMCQIRVFUGISV-UHFFFAOYSA-N propan-2-one;prop-2-enamide Chemical class CC(C)=O.NC(=O)C=C BNMCQIRVFUGISV-UHFFFAOYSA-N 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 150000003384 small molecules Chemical group 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 235000010215 titanium dioxide Nutrition 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Abstract
The invention discloses water-soluble polyurethane for the wood lacquer and a preparation method thereof. The water-soluble polyurethane comprises the following raw materials in parts by weight: 165-175 parts of polycarbonate diol, 131-132 parts of isophorone diisocyanate, 0.4-0.6 part of catalyst, 16.5-17.5 parts of dihydromethyl propionic acid, 2.7-3 parts of dihydroxyacetone, 18.5-19.5 parts of 1,4-butanediol, 4-5 parts of acetone, 12.5-13 parts of triethylamine, 6-7 parts of ethylenediamine, 628-638 parts of deionized water and 5-6 parts of adipic acid dihydrazide. The preparation method adopts the preparation technology combining the acetone method with pre-polymer dispersion method, thus effectively reducing the dosage of acetone and increasing the molecular weight of the generated polyurethane; and when the prepared water-soluble polyurethane dispersion forms a film, with the volatilization of water and the reduction of the pH value, the self-crosslinking reactions of ketonic carbonyl and hydrazide group can be performed, thus the after crosslinking density of the film can be increased and the hardness and water resistance of the the film can be increased.
Description
Technical field
The present invention relates to technical field of coatings, specifically is a kind of wood lacquer use urethane and preparation method thereof.
Background technology
Along with the enhancing of social enviroment protection consciousness, the proposition in succession of a series of environmental practices such as low-carbon economy, environmental protection, energy-saving and emission-reduction, coating industry also develops in the direction of the water-borne coatings that is carrying out low VOC.Urethane resin has good physical and mechanical property because of it, and the low temperature kindliness of certain water resistance, excellence etc. obtains the common concern of all trades and professions.Solvent borne polyurethane coating is because its VOC discharging is higher, severe contamination ecotope and more and more being restricted.Aqueous polyurethane coating not only has the performance of solvent borne polyurethane, and its solvent is a water, becomes the focus of coating research and development undoubtedly with its environmental protection water-borne woodwork coating that makes.
Aqueous polyurethane is main medium with water; Do not contain or only contain a small amount of organic solvent; Have do not fire, nontoxic, environmentally safe, the saving energy and be prone to advantage such as processing, according to filling a prescription and the difference of auxiliary agent, can be modulated into the treatment agent of coating, tackiness agent and other purposes.Since the seventies in 20th century, aqueous polyurethane becomes one of with fastest developing speed in polyurethane chemistry and the technology, most active branch with its purposes and environment friendly.Aqueous polyurethane is normally introduced hydrophilic chain extender in performed polymer, after neutralization, under high-speed stirring, ionize urethane is added in the entry, or water is added urethane want in the solvent liquid formation polyurethane aqueous dispersion from aggressiveness.
Mostly mono-component aqueous urethane is the thread-like molecule structure; Belong to thermoplastics type's polymer substance; Film forming can not be cross-linked into reticulated structure as two-pack PU; Thereby all existing more deficiency at aspects such as hardness and water-fast, anti-solvent, resistants, these make aqueous polyurethane that certain restriction also arranged in the application of woodwork coating, are seriously restricting the application and the development of water-borne wood coating.
Be to solve water-fast, the solvent-proof problem of aqueous polyurethane, the focus of concentrating at present has two aspects, and the one, the modify-water based polyurethane mainly is epoxide modified, organosilicon, fluorine modification and introduce in the polyfunctionality small molecular alcohol cross-linking modified etc.; Another aspect is to add Soluol XC 100, carbodiimide and epoxy organosilicon coupling agent etc. through the back to carry out the back crosslinked.The problem of the former modification is will be incorporated into organic silicon, fluorine on the side chain of urethane effectively to bring into play heteroatomic usefulness such as silicon, fluorine; Thereby receive modified monomer to receive the restriction of structure; Even to pay very big cost; Wriggling when internally crosslinked branching can influence molecular film-forming again, the disadvantage of paint film when bringing film forming.The latter constructs numerous and diverse, receives the restriction of working life, and the back linking agent has certain toxicity more.Be reported as as the mode document of self-crosslinking modification more and have crosslinked plant oil modified of atmospheric oxidation; And the crosslinked report of ketone hydrazine only rests on the introducing of two acetone acrylic amides (DAAM); Can be grafted in the polyurethane system because of DAAM does not have reactive group; Through synthetic introducing system, can obviously reduce grafting efficiency again.
The compound method of existing aqueous polyurethane has outer emulsion process and self-emulsification, and self-emulsification comprises that again acetone method, performed polymer hybrid system, fusion disperse polycondensation method and ketoimine/ketone to join the nitrogen method, wherein:
Acetone method is that isocyanate terminated base polyurethane prepolymer for use as is reacted with the chainextender that contains hydrophilic radical in solvent, forms the aggressiveness that leaves of high molecular weight.Solvent for use must be lower boiling and can dissolve altogether with water, and so acetone commonly used is the name acetone method;
The performed polymer hybrid system be molecular weight is not too high, viscosity less contain end group-NCO performed polymer do not add or add a spot of solvent, directly with hydrophilic monomer with its part chain extension.Dispersion process need be carried out at low temperatures, with the reactive behavior of reduction-NCO and water, and then in water, carries out chain extension with reactive behavior high diamines and triamine, generates the high-molecular weight aqueous polyurethane.
Summary of the invention
The technical problem that the present invention will solve provides a kind of wood lacquer use urethane and preparation method thereof; Solve the problem that water-fast, anti-solvent is poor, hardness is low that aqueous polyurethane exists in woodwork coating is used, and overcome the drawback of safety and environmental protection in the use of bi-component polyurethane ester wood lacquer.
Technical scheme of the present invention is:
A kind of wood lacquer use urethane; It is made up of the raw material of following weight part ratio: PCDL 165-175, isophorone diisocyanate 131-132, catalyzer 0.4-0.6, dimethylol propionic acid 16.5-17.5, otan 2.7-3,1,4-butyleneglycol 18.5-19.5, acetone 4-5, triethylamine 12.5-13, quadrol 6-7, deionized water 628-638, adipic dihydrazide 5-6.
A kind of wood lacquer is used the self-cross linking type aqueous polyurethane; PCDL 170-171, isophorone diisocyanate 131.5-131.6, catalyzer 0.5-0.6, dimethylol propionic acid 17-17.1, otan 2.8-2.9,1,4-butyleneglycol 18.9-19.1, acetone 4-5, triethylamine 12.7-13, quadrol 6.5-6.6, deionized water 633-634, adipic dihydrazide 5.4-5.7.
Described catalyzer is selected organotin catalysts for use.
A kind of preparation method of wood lacquer use urethane comprises the following steps:
(1), in reaction vessel, adds PCDL by weight; Under 115-125 ℃, vacuumize dehydration 50-70 minute, be cooled to 55-65 ℃ then, add isophorone diisocyanate, dimethylol propionic acid and catalyzer; Be warming up to 75-80 ℃ of reaction 2-3h, get reaction solution;
(2), by weight with the otan that mixes and 1,4-butyleneglycol mixed solution, acetone add in the reaction solution, controlled temperature is 65-75 ℃ of reaction 3-4 hour, base polyurethane prepolymer for use as;
(3), base polyurethane prepolymer for use as is cooled to 33-37 ℃, add triethylamine by weight, the limit is stirred the limit fast and is added deionized water then; Disperse after 15-25 minute; Slowly add quadrol again and carry out the water chain extension, after quadrol adds completion, add adipic dihydrazide; Remove acetone through underpressure distillation, get aqueous polyurethane.
During each raw material of aqueous polyurethane of the present invention was formed, the described carbon ester divalent alcohol that gathers had excellent hydrolysis stability; The aqueous polyurethane that isophorone diisocyanate makes has outstanding anti-yellowing property; Dimethylol propionic acid is a hydrophilic chain extender, 1, and the 4-butyleneglycol is a small molecule chain extender, processes behind the base polyurethane prepolymer for use as with in the triethylamine and salify; Described otan and adipic dihydrazide are self-cross linking monomer, wherein, contain two activity hydroxies in the otan, can participate in synthetic in micromolecular chain extending reaction, can provide again carbonyl the later stage during film forming and adipic dihydrazide crosslinked; Quadrol is used for later stage water chainextender, is used for further improving the molecular weight of urethane.
The preparation technology that Synthesis of Waterborne Polyurethane method of the present invention adopts acetone method to combine with the performed polymer dispersion method; Effectively reduce the usage quantity and the molecular weight that increases generation urethane of acetone; And during the aqueous pu dispersions film forming that makes with the volatilization of moisture; Self-crosslinking reaction can take place in pH value decline ketone carbonyl and hydrazide group, has improved the later stage cross-linking density of film, thereby improves the hardness and the water tolerance of film.
The present invention is used in house ornamentation and the furniture aqueous woodware paint, efficiently solves the problem of low, the water-fast and poor solvent resistance of aqueous woodware paint hardness of film; Aqueous woodware paint that makes and white finish paint have yellowing resistance and weather-proof weather resistance preferably.
Embodiment
(1), wood lacquer use urethane, form by the raw material of following weight part ratio:
PCDL 170.46
Isophorone diisocyanate 131.56
The inferior tin 0.57 of octoate catalyst
Dimethylol propionic acid 17.05
Otan 2.84
1,4-butyleneglycol 19.01
Acetone 4-5
Triethylamine 12.86
Quadrol 6.56
Deionized water 633.55
Adipic dihydrazide 5.54.
(2), the preparation method of wood lacquer use urethane:
A, in the four-hole boiling flask that electric mixer, TM, reflux condensing tube are housed, add PCDL by weight; Under 110 ℃, vacuumize dehydration 1 hour; Be cooled to 60 ℃ then; Add the inferior tin of isophorone diisocyanate, dimethylol propionic acid and octoate catalyst by weight, be warming up to 75-80 ℃ of reaction 2-3h, get reaction solution;
B, in reaction solution, add in advance by weight than the otan that mixes and 1,4-butyleneglycol mixed solution, acetone, controlled temperature is 70 ℃ of reactions 3-4 hour, base polyurethane prepolymer for use as;
C, base polyurethane prepolymer for use as is cooled to 35 ℃, by weight than adding triethylamine, the limit is stirred the limit fast and is added deionized water then; Disperse after 20 minutes; Carry out the water chain extension than slow adding quadrol by weight, after quadrol adds completion, add adipic dihydrazide; Remove acetone through underpressure distillation, get aqueous pu dispersions.
The aqueous pu dispersions that makes has following physicochemical characteristics: outward appearance is translucent, and solids constituent content is 35% ± 1, and water tolerance 48h is no abnormal, pencil hardness H level, 1 grade of sticking power.
(3), the weight part proportioning of each feed composition in the aqueous woodware paint: aqueous pu dispersions: 900-950; Skimmer: 2-3; Wetting agent: 4-5; PH regulator agent: 1-2; Film coalescence aid: 14-15; Flow agent: 3-4; Thickening material: 3-4; Deionized water: 30-40; Dispersion agent: 0-1; Slip(ping)agent: 0-4; Flatting silica: 0-10; Emulsifying wax: 0-30.
The weight part proportioning of each feed composition in the aqueous wooden ware white finish paint: aqueous pu dispersions: 650-700; Skimmer: 3-5; Wetting agent: 3-5; Dispersion agent: 4-6; PH regulator agent: 1-2; Superfine titanium white: 140-160; Inorganic bentonite (5%): 90-100; Film coalescence aid: 8-12; Flow agent: 2-4; Thickening material: 2-4; Slip(ping)agent: 3-5; Deionized water: 30-40; Flatting silica: 0-5; UV-light attractant: 0-0.5.
Aqueous woodware paint that aqueous polyurethane is prepared or white finish paint can carry out self-crosslinking reaction in film forming moisture content evaporable process; Form the tridimensional network that to a certain degree is similar to 2K type coating; Improve film forming cross-linking density; Efficiently solve water, solvent etc. paint film is destroyed, and promoted the hardness of film to a certain extent, satisfied in the woodwork coating application needs of Water-borne modification and environmental protection fully.
Claims (3)
1. wood lacquer use urethane is characterized in that:
The raw material of A, the following weight part ratio of employing:
PCDL 165-175, isophorone diisocyanate 131-132, catalyzer 0.4-0.6, dimethylol propionic acid 16.5-17.5, otan 2.7-3,1,4-butyleneglycol 18.5-19.5, acetone 4-5, triethylamine 12.5-13, quadrol 6-7, deionized water 628-638, adipic dihydrazide 5-6;
B, process the following step make:
(1), in reaction vessel, adds PCDL by weight; Under 115-125 ℃, vacuumize dehydration 50-70 minute, be cooled to 55-65 ℃ then, add isophorone diisocyanate, dimethylol propionic acid and catalyzer; Be warming up to 75-80 ℃ of reaction 2-3h, get reaction solution;
(2), by weight with the otan that mixes and 1,4-butyleneglycol mixed solution, acetone add in the reaction solution, controlled temperature is 65-75 ℃ of reaction 3-4 hour, base polyurethane prepolymer for use as;
(3), base polyurethane prepolymer for use as is cooled to 33-37 ℃, add triethylamine by weight, the limit is stirred the limit fast and is added deionized water then; Disperse after 15-25 minute; Slowly add quadrol again and carry out the water chain extension, after quadrol adds completion, add adipic dihydrazide; Remove acetone through underpressure distillation, get aqueous polyurethane.
2. a kind of wood lacquer use urethane according to claim 1; It is characterized in that: it is that raw material by following weight part ratio makes: PCDL 170-171, isophorone diisocyanate 131.5-131.6, catalyzer 0.5-0.6, dimethylol propionic acid 17-17.1, otan 2.8-2.9,1,4-butyleneglycol 18.9-19.1, acetone 4.5-5, triethylamine 12.7-13, quadrol 6.5-6.6, deionized water 633-634, adipic dihydrazide 5.4-5.7.
3. a kind of wood lacquer use urethane according to claim 1, it is characterized in that: described catalyzer is selected dibutyl tin laurate, stannous octoate or triethylenediamine for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010573885A CN102070768B (en) | 2010-12-06 | 2010-12-06 | Water-soluble polyurethane for wood lacquer and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010573885A CN102070768B (en) | 2010-12-06 | 2010-12-06 | Water-soluble polyurethane for wood lacquer and preparation method thereof |
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| CN102070768A CN102070768A (en) | 2011-05-25 |
| CN102070768B true CN102070768B (en) | 2012-10-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102604039A (en) * | 2012-03-20 | 2012-07-25 | 王全杰 | Preparation method of waterborne polyurethane material with resistance to yellowing |
| CN103087621A (en) * | 2013-02-03 | 2013-05-08 | 马丁青 | Antibacterial waterborne polyurethane wood lacquer |
| CN103059710A (en) * | 2013-02-03 | 2013-04-24 | 张关莲 | Preparation method of antibacterial waterborne polyurethane woodware paint |
| CN103113816B (en) * | 2013-02-03 | 2015-09-23 | 楼天涯 | A kind of preparation method with the waterborne polyurethane wood coatings of antibacterial effect |
| CN103059709B (en) * | 2013-02-03 | 2015-11-18 | 朱顺华 | A kind of waterborne polyurethane wood coatings with antibacterial effect |
| WO2016172681A1 (en) | 2015-04-24 | 2016-10-27 | The Penn State Research Foundation | Clickable waterborne polymers and click-crosslinked waterborne polymers |
| CN105111910B (en) * | 2015-09-17 | 2018-01-23 | 黑龙江大学 | A kind of method of the isocyanate component of anionic method synthesis aqueous polyurethane coating with bi component |
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