CN105175675A - Preparation method of high-hardness water-soluble polyurethane resin - Google Patents
Preparation method of high-hardness water-soluble polyurethane resin Download PDFInfo
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- CN105175675A CN105175675A CN201510595792.6A CN201510595792A CN105175675A CN 105175675 A CN105175675 A CN 105175675A CN 201510595792 A CN201510595792 A CN 201510595792A CN 105175675 A CN105175675 A CN 105175675A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3275—Hydroxyamines containing two hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3271—Hydroxyamines
- C08G18/3278—Hydroxyamines containing at least three hydroxy groups
- C08G18/3281—Hydroxyamines containing at least three hydroxy groups containing three hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4202—Two or more polyesters of different physical or chemical nature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4205—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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
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- C—CHEMISTRY; METALLURGY
- 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
Abstract
The invention discloses a preparation method of a high-hardness water-soluble polyurethane resin, which comprises the following steps: heating to melt terephthalic anhydride polyesterglycol and propylene glycol 2-methyl-1,3-polyazelate diol, keeping the temperature, and carrying out vacuum dehydration to obtain a material A; adding phenylenedimethylidyne diisocyanate into the material A, heating, keeping the temperature, cooling, adding 1,6-hexanediol, pentaerythritol and N-methylpyrrolidone, adding zinc naphthenate, heating, and keeping the temperature to obtain a material B; cooling the material B, dropwisely adding a mixed solution containing triethanolamine and N-butyldiethanolamine, heating, and keeping the temperature to obtain a material C; and after dropwisely adding propionic acid into the material C to perform neutralization, carrying out vacuum distillation to obtain the high-hardness water-soluble polyurethane resin. The high-hardness water-soluble polyurethane resin has the advantages of high hardness, excellent water resistance, high film-forming speed, favorable wettability and high adhesive force.
Description
Technical field
The present invention relates to water soluble polyurethane resin technical field, particularly relate to a kind of preparation method of high rigidity water soluble polyurethane resin.
Background technology
Urethane, i.e. poly-amino methyl are the general names of the macromolecular material containing repetition amino methyl (-NHCOO-) structure in molecular chain.Urethane is generally that basic material forms through polyaddition reaction by vulcabond and dibasic alcohol or polyvalent alcohol, different according to the functional group number of raw material, polymkeric substance that is linear or body structure can be made, it has good mechanical property, adhesive property and wear resistance etc., is widely applied in each field.
Traditional urethane is generally solvent-borne type, and the discharge of its volatile organic compounds is large, and environmental pollution is comparatively serious.Along with the increasingly stringent of environmental regulation and the enhancing gradually of people's environmental consciousness, aqueous polyurethane replaces the emphasis that solvent borne product has become people's research.Aqueous polyurethane has excellent physical and mechanical properties, containing or containing a small amount of volatilizable organism, production and construction safety, to environment and human body substantially harmless, meet environmental requirement.
The preparation method generally used now is internal emulsification method, namely on polyurethane molecular chain, introduce some hydrophilic radicals, make polyurethane molecular have certain wetting ability, then under high speed dispersion, make it spontaneously be scattered in water by means of these hydrophilic radicals, thus obtain aqueous polyurethane.But hydrophilic radical be introduced in the water tolerance and the hardness that improve and but to reduce it while polyurethane hydrophilic.
Summary of the invention
Based on the technical problem that background technology exists, the present invention proposes a kind of preparation method of high rigidity water soluble polyurethane resin, gained high rigidity water soluble polyurethane resin has high rigidity and excellent water resistance, and film forming speed is fast, wettability is good, strong adhesion.
The preparation method of a kind of high rigidity water soluble polyurethane resin that the present invention proposes, comprises the following steps:
S1, by terephthalic anhydride polyester diol and poly-nonane diacid-2-methyl isophthalic acid, ammediol esterdiol intensification melting, insulation, then vacuum hydro-extraction obtains material A;
S2, add in material A by xylylene diisocyanate, heat up, insulation, adds 1,6-hexylene glycol, tetramethylolmethane and N-Methyl pyrrolidone, then adds zinc naphthenate after cooling, heats up, and insulation, obtains material B;
S3, material B is lowered the temperature after, then drip the mixing solutions containing trolamine and N butyl diethanol amine, heat up, insulation obtains material C;
S4, drip after propionic acid neutralizes in material C, vacuum distilling obtains high rigidity water soluble polyurethane resin.
Preferably, in S1, terephthalic anhydride polyester diol and poly-nonane diacid-2-methyl isophthalic acid, the weight ratio of ammediol esterdiol is 40 ~ 55:15 ~ 22.
Preferably, in S1, the temperature of intensification melting is 120 ~ 150 DEG C, and soaking time is 2 ~ 4h.
Preferably, the weight ratio of terephthalic anhydride polyester diol and xylylene diisocyanate, 1,6-hexylene glycol, tetramethylolmethane, N-Methyl pyrrolidone, zinc naphthenate is 40 ~ 55:36 ~ 40:9 ~ 12:3 ~ 5:25 ~ 35:0.2 ~ 0.4.
Preferably, in S2, xylylene diisocyanate is added in material A, be warming up to 85 ~ 95 DEG C, insulation 3 ~ 5h, adds 1,6-hexylene glycol, tetramethylolmethane and N-Methyl pyrrolidone, then adds zinc naphthenate after being cooled to 40 ~ 50 DEG C, be warming up to 82 ~ 85 DEG C, insulation 3 ~ 5h, obtains material B.
Preferably, in S3, the solvent of mixing solutions is N-Methyl pyrrolidone.
Preferably, the weight ratio of trolamine, N butyl diethanol amine, N-Methyl pyrrolidone and zinc naphthenate is 3 ~ 6:4 ~ 5:15 ~ 20:0.2 ~ 0.4
Preferably, in S3, after material B is cooled to 30 ~ 40 DEG C, then drip the mixing solutions containing trolamine and N butyl diethanol amine, time for adding is 3 ~ 6h, is warming up to 60 ~ 80 DEG C, and insulation 2 ~ 4h obtains material C.
Preferably, the weight ratio of trolamine, propionic acid, water is 3 ~ 6:5 ~ 7:340 ~ 360.
Because the water-borne polyurethane bond film hardness of terephthalic anhydride polyester diol synthesis under equal conditions is higher, the present invention adopts the terephthalic anhydride polyester diol of high rigidity to be soft section, zwitterion mixing hydrophilic chain extender, it is high that the mode that segmentation is progressively polymerized has synthesized hardness, strong adhesion, closure is good, and impervious oil and anti-pigment ooze out superior performance, the water soluble polyurethane resin of water-tolerant.
In addition in order to overcome the defect of easily sudden and violent coagel in cation aqueous polyurethane production process, the present invention creatively adopts positively charged ion coupling and two kinds of cationic hydrophilics to expand the method joining agent coupling and controls speed of response, and improves emulsion intercalation method and solid content.
Compared with prior art, the present invention has the following advantages:
1) hardness of the present invention is high, strong adhesion, and closure is good, and impervious oil and anti-pigment ooze out superior performance, water-tolerant;
2) wettability of the present invention is good, does not need additionally to add wetting agent, prevents wetting agent on the impact of oil impregnate;
3) film forming speed of the present invention is fast, and paint film is transparent, and pencil hardness reaches H ~ 2H, and water-fast 48h is without exception, and sticking power is 0 grade;
4) perviousness of the present invention is strong, and impervious oiliness is good, coating surface and other resin compatibles good;
5) preparation method's process stabilizing of the present invention, reaction is easy to control, and production risk is little.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the preparation method of a kind of high rigidity water soluble polyurethane resin that the present invention proposes.
Embodiment
As shown in Figure 1, Fig. 1 is the schematic flow sheet of the preparation method of a kind of high rigidity water soluble polyurethane resin that the present invention proposes.
With reference to Fig. 1, the preparation method of a kind of high rigidity water soluble polyurethane resin that the present invention proposes, comprises the following steps:
S1, by terephthalic anhydride polyester diol and poly-nonane diacid-2-methyl isophthalic acid, ammediol esterdiol intensification melting, insulation, then vacuum hydro-extraction obtains material A;
S2, add in material A by xylylene diisocyanate, heat up, insulation, adds 1,6-hexylene glycol, tetramethylolmethane and N-Methyl pyrrolidone, then adds zinc naphthenate after cooling, heats up, and insulation, obtains material B;
S3, material B is lowered the temperature after, then drip the mixing solutions containing trolamine and N butyl diethanol amine, heat up, insulation obtains material C;
S4, drip after propionic acid neutralizes in material C, vacuum distilling obtains high rigidity water soluble polyurethane resin.
Below, by specific embodiment, technical scheme of the present invention is described in detail.
Embodiment 1
The preparation method of a kind of high rigidity water soluble polyurethane resin that the present invention proposes, comprises the following steps:
S1, by weight by 40 parts of terephthalic anhydride polyester diol and 22 parts of poly-nonane diacid-2-methyl isophthalic acids, ammediol esterdiol is warming up to 120 DEG C, insulation 4h, and then vacuum hydro-extraction obtains material A;
S2,36 parts of xylylene diisocyanates are added in material A, be warming up to 95 DEG C, insulation 3h, add 9 part of 1,6-hexylene glycol, 5 parts of tetramethylolmethanes and 25 parts of N-Methyl pyrrolidone after being cooled to 50 DEG C, then add 0.4 part of zinc naphthenate, be warming up to 82 DEG C, insulation 5h, obtains material B;
S3, material B is cooled to 30 DEG C after, drip the mixing solutions containing trolamine and N butyl diethanol amine again, wherein mixing solutions comprises: 6 parts of trolamines, 4 parts of N butyl diethanol amines and 20 parts of N-Methyl pyrrolidone, and time for adding is 3h, be warming up to 80 DEG C, insulation 2h obtains material C;
S4, drip after 6 parts of propionic acid neutralize in material C, vacuum distilling obtains high rigidity water soluble polyurethane resin.
Embodiment 2
The preparation method of a kind of high rigidity water soluble polyurethane resin that the present invention proposes, comprises the following steps:
S1, by weight by 55 parts of terephthalic anhydride polyester diol and 15 parts of poly-nonane diacid-2-methyl isophthalic acids, ammediol esterdiol is warming up to 150 DEG C, insulation 2h, and then vacuum hydro-extraction obtains material A;
S2,40 parts of xylylene diisocyanates are added in material A, be warming up to 85 DEG C, insulation 5h, add 12 part of 1,6-hexylene glycol, 3 parts of tetramethylolmethanes and 35 parts of N-Methyl pyrrolidone after being cooled to 40 DEG C, then add 0.2 part of zinc naphthenate, be warming up to 85 DEG C, insulation 3h, obtains material B;
S3, material B is cooled to 40 DEG C after, drip the mixing solutions containing trolamine and N butyl diethanol amine again, wherein mixing solutions comprises: 3 parts of trolamines, 5 parts of N butyl diethanol amines and 15 parts of N-Methyl pyrrolidone, and time for adding is 6h, be warming up to 60 DEG C, insulation 4h obtains material C;
S4, drip after 3 parts of propionic acid neutralize in material C, vacuum distilling obtains high rigidity water soluble polyurethane resin.
Embodiment 3
The preparation method of a kind of high rigidity water soluble polyurethane resin that the present invention proposes, comprises the following steps:
S1, by weight by 45 parts of terephthalic anhydride polyester diol and 20 parts of poly-nonane diacid-2-methyl isophthalic acids, ammediol esterdiol is warming up to 130 DEG C, insulation 3.4h, and then vacuum hydro-extraction obtains material A;
S2,37 parts of xylylene diisocyanates are added in material A, be warming up to 92 DEG C, insulation 3.8h, 10 part 1 is added after being cooled to 45 DEG C, 6-hexylene glycol, 4.4 parts of tetramethylolmethanes and 28 parts of N-Methyl pyrrolidone, then add 0.35 part of zinc naphthenate, be warming up to 83 DEG C, insulation 4.6h, obtains material B;
S3, material B is cooled to 32 DEG C after, drip the mixing solutions containing trolamine and N butyl diethanol amine again, wherein mixing solutions comprises: 5 parts of trolamines, 4.2 parts of N butyl diethanol amines and 18 parts of N-Methyl pyrrolidone, time for adding is 4h, be warming up to 75 DEG C, insulation 2.6h obtains material C;
S4, drip after 5 parts of propionic acid neutralize in material C, vacuum distilling obtains high rigidity water soluble polyurethane resin.
Embodiment 4
The preparation method of a kind of high rigidity water soluble polyurethane resin that the present invention proposes, comprises the following steps:
S1, by weight by 50 parts of terephthalic anhydride polyester diol and 18 parts of poly-nonane diacid-2-methyl isophthalic acids, ammediol esterdiol is warming up to 140 DEG C, insulation 2.6h, and then vacuum hydro-extraction obtains material A;
S2,38 parts of xylylene diisocyanates are added in material A, be warming up to 88 DEG C, insulation 4.5h, 11 part 1 is added after being cooled to 43 DEG C, 6-hexylene glycol, 3.7 parts of tetramethylolmethanes and 32 parts of N-Methyl pyrrolidone, then add 0.25 part of zinc naphthenate, be warming up to 84 DEG C, insulation 3.8h, obtains material B;
S3, material B is cooled to 36 DEG C after, drip the mixing solutions containing trolamine and N butyl diethanol amine again, wherein mixing solutions comprises: 4 parts of trolamines, 4.4 parts of N butyl diethanol amines and 16 parts of N-Methyl pyrrolidone, time for adding is 5h, be warming up to 65 DEG C, insulation 3.2h obtains material C;
S4, drip after 4 parts of propionic acid neutralize in material C, vacuum distilling obtains high rigidity water soluble polyurethane resin.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (9)
1. a preparation method for high rigidity water soluble polyurethane resin, is characterized in that, comprises the following steps:
S1, by terephthalic anhydride polyester diol and poly-nonane diacid-2-methyl isophthalic acid, ammediol esterdiol intensification melting, insulation, then vacuum hydro-extraction obtains material A;
S2, add in material A by xylylene diisocyanate, heat up, insulation, adds 1,6-hexylene glycol, tetramethylolmethane and N-Methyl pyrrolidone, then adds zinc naphthenate after cooling, heats up, and insulation, obtains material B;
S3, material B is lowered the temperature after, then drip the mixing solutions containing trolamine and N butyl diethanol amine, heat up, insulation obtains material C;
S4, drip after propionic acid neutralizes in material C, vacuum distilling obtains high rigidity water soluble polyurethane resin.
2. the preparation method of high rigidity water soluble polyurethane resin according to claim 1, it is characterized in that, in S1, terephthalic anhydride polyester diol and poly-nonane diacid-2-methyl isophthalic acid, the weight ratio of ammediol esterdiol is 40 ~ 55:15 ~ 22.
3. the preparation method of high rigidity water soluble polyurethane resin according to claim 1 or 2, it is characterized in that, in S1, the temperature of intensification melting is 120 ~ 150 DEG C, and soaking time is 2 ~ 4h.
4. the preparation method of high rigidity water soluble polyurethane resin according to any one of claim 1-3, it is characterized in that, the weight ratio of terephthalic anhydride polyester diol and xylylene diisocyanate, 1,6-hexylene glycol, tetramethylolmethane, N-Methyl pyrrolidone, zinc naphthenate is 40 ~ 55:36 ~ 40:9 ~ 12:3 ~ 5:25 ~ 35:0.2 ~ 0.4.
5. the preparation method of high rigidity water soluble polyurethane resin according to any one of claim 1-4, it is characterized in that, in S2, xylylene diisocyanate is added in material A, be warming up to 85 ~ 95 DEG C, insulation 3 ~ 5h, adds 1,6-hexylene glycol, tetramethylolmethane and N-Methyl pyrrolidone after being cooled to 40 ~ 50 DEG C, add zinc naphthenate again, be warming up to 82 ~ 85 DEG C, insulation 3 ~ 5h, obtains material B.
6. the preparation method of high rigidity water soluble polyurethane resin according to any one of claim 1-5, it is characterized in that, in S3, the solvent of mixing solutions is N-Methyl pyrrolidone.
7. the preparation method of high rigidity water soluble polyurethane resin according to claim 6, it is characterized in that, the weight ratio of trolamine, N butyl diethanol amine, N-Methyl pyrrolidone and zinc naphthenate is 3 ~ 6:4 ~ 5:15 ~ 20:0.2 ~ 0.4.
8. the preparation method of high rigidity water soluble polyurethane resin according to any one of claim 1-7, it is characterized in that, in S3, after material B is cooled to 30 ~ 40 DEG C, drip the mixing solutions containing trolamine and N butyl diethanol amine again, time for adding is 3 ~ 6h, is warming up to 60 ~ 80 DEG C, and insulation 2 ~ 4h obtains material C.
9. the preparation method of high rigidity water soluble polyurethane resin according to any one of claim 1-8, it is characterized in that, the weight ratio of trolamine, propionic acid, water is 3 ~ 6:5 ~ 7:340 ~ 360.
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| CN110770270A (en) * | 2017-06-22 | 2020-02-07 | 东洋高分子股份有限公司 | Aqueous polyurethane dispersion, process for producing aqueous polyurethane dispersion, aqueous coating composition, and coating film |
| CN110770270B (en) * | 2017-06-22 | 2021-12-07 | 东洋高分子股份有限公司 | Aqueous polyurethane dispersion, process for producing aqueous polyurethane dispersion, aqueous coating composition, and coating film |
| CN109337473A (en) * | 2018-09-29 | 2019-02-15 | 江苏海田技术有限公司 | A kind of aqueous UV woodwork coating of high-performance quick-drying type and preparation method thereof |
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