CN107446472A - A kind of waterborne polyester coating modified unsaturated polyester emulsion and preparation method thereof - Google Patents

A kind of waterborne polyester coating modified unsaturated polyester emulsion and preparation method thereof Download PDF

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Publication number
CN107446472A
CN107446472A CN201710659850.6A CN201710659850A CN107446472A CN 107446472 A CN107446472 A CN 107446472A CN 201710659850 A CN201710659850 A CN 201710659850A CN 107446472 A CN107446472 A CN 107446472A
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unsaturated polyester
acid
modified unsaturated
modified
parts
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许钧强
谢义鹏
康伦国
姚东生
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Shaoguan Union Chemical Co Ltd
Union Foshan Chemical Co Ltd
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Shaoguan Union Chemical Co Ltd
Union Foshan Chemical Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D167/00Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D167/06Unsaturated polyesters having carbon-to-carbon unsaturation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/67Unsaturated compounds having active hydrogen
    • C08G18/68Unsaturated polyesters
    • C08G18/683Unsaturated polyesters containing cyclic groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/60Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from the reaction of a mixture of hydroxy carboxylic acids, polycarboxylic acids and polyhydroxy compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/64Polyesters containing both carboxylic ester groups and carbonate groups
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00Processes of treating or compounding macromolecular substances
    • C08J3/02Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C08J3/07Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from polymer solutions
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D161/00Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
    • C09D161/20Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D175/00Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04Polyurethanes
    • C09D175/06Polyurethanes from polyesters
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02Emulsion paints including aerosols
    • C09D5/022Emulsions, e.g. oil in water
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16Antifouling paints; Underwater paints
    • C09D5/1656Antifouling paints; Underwater paints characterised by the film-forming substance
    • C09D5/1662Synthetic film-forming substance
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/06Unsaturated polyesters

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Dispersion Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Macromonomer-Based Addition Polymer (AREA)

Abstract

The present invention relates to a kind of waterborne polyester coating modified unsaturated polyester emulsion, it is to introduce unsaturated monomer on traditional polyester molecule chain to be modified obtained modified unsaturated polyester, after 20~80mgKOH/g of acid number as defined in reaching, solvent removed by vacuum, then modified unsaturated polyester emulsion is prepared by inversed phase emulsification;Described modified unsaturated polyester emulsion is translucent microemulsion, and particle diameter is in 60~100nm.The present invention also provides the preparation method of waterborne polyester coating modified unsaturated polyester emulsion;Modified unsaturated polyester emulsion produced by the present invention can be configured to pure aqueous polyester woodwork coating, and its adhesive force, stain resistance, water resistance, alkali resistance apply real, water-based silicon-acrylic coatings better than aqueous polyurethane coating, water soluble acrylic acid.Modified unsaturated polyester emulsion of the present invention can also be configured to bi-component waterborne baking vanish with amino resins, also can be configured to waterborne two-component polyurethane coating with polyurethane curing agent.

Description

A kind of waterborne polyester coating modified unsaturated polyester emulsion and preparation method thereof
Technical field
The present invention relates to a kind of waterborne polyester emulsion, more particularly to a kind of waterborne polyester coating modified unsaturated polyester Emulsion and preparation method thereof, belong to water-base resin technical field.
Technical background
Severe environmental regulation has been formulated in succession both at home and abroad has been discharged to limit VOC (VOC) to air, High-performance, environmental protection have turned into the direction of paint development.Water-borne wood coating is using water as decentralized medium, during production and use Pollution is minimum, is the development trend of woodwork coating.With the continuous enhancing of people's environmental consciousness, aqueous woodware paint increasingly by The welcome in market and the favor of consumer.
At present, the main species of water-borne wood coating have water alcohol acid, polyurethane aqueous dispersion body, acrylic emulsion, poly- ammonia Ester-acrylic acid hybridisation emulsion etc..Although alcohol acids water-borne wood coating good film-forming property, glossiness are high, good decorative property, film is done Property is slow, hardness is low, yellowing resistance is poor, and coating easily hydrolyzes during storage, poor storage stability;Polyurethane aqueous Although granular media class woodwork coating richness height, good toughness, good decorative property, hardness of film is low, poor water resistance, and expensive; Acrylic emulsion class woodwork coating has the advantages that hardness is good, price is more cheap, but acrylic emulsion class woodwork coating is also deposited Film is partially soft, grinability is poor, coating is to the poor permeability of ground, the water resistance of film and solvent resistance is poor, photocatalytic coating film The shortcomings of damp degree is low, richness is poor.Therefore in the market is largely changed using acrylic acid hybridisation polyaminoester emulsion or polyurethane chemistry Property acrylic emulsion, but the performance such as its hardness, richness differs larger, therefore in the market aqueous woodware paint compared with solvent-borne type woodcare paint Occupation rate of market is smaller, and under government policy environmental protection, the overall background of coating Water-borne modification, in the market is to high rigidity, high richness The requirement of aqueous woodware paint is more and more urgent.
Chinese patent CN105669939A discloses a kind of preparation method of modified unsaturated polyester emulsion, it is characterized in that double Introduce polyurethane segment on the unsaturated polyester (UP) strand that phenol A and cis-butenedioic anhydride are formed, then rp-emulsification be made it is polyurethane-modified not Saturated polyester emulsion;The emulsion and the compatibility of carbon fiber are good, can be used as the main material of carbon fiber sizing agent, make carbon fiber collection Beam function admirable, wearability is good, and pliability is preferable.The emulsion only uses as sizing agent, plays wetting adhesive action.
The features such as solvent-borne type unsaturated polyester resin (PE) woodcare paint is because of high richness, high rigidity has in woodwork coating field There is higher occupation rate of market, due to environmental protection, aqueous polyester resin arises at the historic moment, as the waterborne polyester containing hydroxyl all It is to be configured to baking vanish with amino resins, or two-component coating is configured to polyurethane curing agent.Reported currently without open source information Pure aqueous polyester woodwork coating, therefore it is necessary to develop a kind of modified poly ester emulsion for pure aqueous polyester woodwork coating.
The content of the invention
The shortcomings that to overcome prior art and deficiency, the purpose of the present invention aim to provide a kind of waterborne polyester coating and are modified Unsaturated polyester emulsion.
Another object of the present invention provides a kind of preparation method of waterborne polyester coating modified unsaturated polyester emulsion.
Waterborne polyester coating modified unsaturated polyester emulsion of the present invention, is introduced on traditional polyester molecule chain Unsaturated monomer is modified obtained modified unsaturated polyester, and after reaching 20~80mgKOH/g of defined acid number, vacuum removal is molten Agent, then modified unsaturated polyester emulsion is prepared by inversed phase emulsification.
The preparation method of waterborne polyester coating modified unsaturated polyester emulsion of the present invention, step are as follows:
A) it is polynary by 30~40 parts, in the reactor equipped with agitator, condenser pipe, constant pressure addition device and thermometer Alcohol, 20~40 parts of organic acid anhydrides are added in reactor, add 10~15 parts of dimethylbenzene, react 4~6h at 160~200 DEG C;So After cool to 120 DEG C and add 10~12 parts of modified polyalcohols and 5~10 parts of unsaturated response type monomers, 0.5 part of hydroquinones, It is 20~80mgKOH/g to continue 3~5h of reaction at 120~180 DEG C of temperature to acid number, and desolvation, is obtained hydrophilic under vacuo Type modified unsaturated polyester resin;
B), rp-emulsification:Described hydrophilic modified unsaturated polyester resin is cooled to rp-emulsification transition temperature 30 ~60 DEG C, add triethylamine-dichloromethane complex and carry out neutralization reaction;Then 0.5~5 part of unsaturated response type emulsification is added Agent or conventional emulsifier, 80~125 parts of deionized water, after phase inversion, continue that 40~160 parts of deionized water is added dropwise, finally give solid Containing 30%~40% modified unsaturated polyester emulsion.
Wherein, described polyalcohol is propane diols, butanediol, neopentyl glycol, ethyl butyl propanediol, glycerine, three hydroxyl first The one or two of base propane, pentaerythrite and double trimethylolpropane.
Described organic acid anhydride is M-phthalic acid, terephthalic acid (TPA), tetrachlorophthalic tetrachlorophthalic anhydrid, tetrahydro O-phthalic It is more than one or both of acid anhydrides, phthalic anhydride, adipic acid, azelaic acid, decanedioic acid, maleic anhydride, fumaric acid.
Described modified polyalcohol is the PPG or PEPA that relative molecular mass is 1000~20000; Described PEPA is one in poly adipate succinic acid ester dihydric alcohol, PCDL, polycaprolactone diols Kind is two or more;Described PPG is PTMG, polytetramethylene ether diol, polyoxypropylene It is more than one or both of glycol.
Described unsaturated response type monomer is methacryloxy propane diols, to styrene sulfonic acid, adjacent styrene Base sulfonic acid, α-to styryl acetic acid, hydroxyethyl methacrylate, hydroxy propyl methacrylate, methacrylate, three It is more than one or both of TRIM, fumaric acid, itaconic acid, maleic anhydride.
Described unsaturated reactive emulsifier is 2- acrylamide -2,2- dimethyl ethyl sulfonic acids sodium, the poly- second two of vinyl Alcohol, pi-allyl sulfo group alkoxy butanedioic acid dibasic acid esters sodium salt, the propyl group ethyl sulfonic acid of pi-allyl -2 sodium, vinyl -2- propyl group ethyl sulfonic acids sodium, It is more than one or both of polyethylene glycol oxide nonyl phenolic ether acrylate, octadecyldimethyl vinyl phenyl ammonium chloride.
Described conventional emulsifier is OP classes, phenethyl phenol polyethenoxy ether class, Tweens, fatty alcohol polyethenoxy ether class One or more.
A kind of waterborne polyester coating modified unsaturated polyester emulsion of the present invention, passes through unsaturated acid anhydride or unsaturated carboxylic Acrylic monomer grafts on carbon-carbon double bond on polyester resin, and because unsaturated carboxylic acid (acid anhydride) class monomer is located near or in polyester Resin terminal groups, therefore carbon-carbon double bond activity is larger, it is easy to carry out Raolical polymerizable and crosslinking curing.Breast produced by the present invention Liquid good hydrophilic property, is translucent nanometer micro-emulsion, and its particle diameter is 60~100nm.
Modified unsaturated polyester emulsion of the present invention can be configured to pure aqueous polyester woodwork coating, its adhesive force, resistance to Contamination, water resistance, alkali resistance apply real, water-based silicon-acrylic coatings better than aqueous polyurethane coating, water soluble acrylic acid.It is of the present invention Modified unsaturated polyester emulsion bi-component waterborne baking vanish can be also configured to amino resins, can also be prepared with polyurethane curing agent Into waterborne two-component polyurethane coating.
Modified unsaturated polyester resin molecular structural formula of the present invention is as follows:
Wherein, 1- represents R in molecular structural formula1-COO-R2-OCOR3, R1、R2、R3The alkane of different carbon chain lengths is represented respectively Base.
Embodiment
A kind of waterborne polyester coating of the present invention is made further of modified unsaturated polyester emulsion with reference to embodiment Description.It is understood that specific embodiment described herein is used only for explaining related invention, rather than to the invention Limit.
Embodiment 1
A kind of waterborne polyester coating modified unsaturated polyester emulsion, preparation process are as follows:
A), in the reactor equipped with agitator, condenser pipe, constant pressure addition device and thermometer, by 5 parts of pentaerythrites, 18 parts of ethylene glycol, 10 parts, 12 parts adipic acids of neopentyl glycol, 25 parts of phthalic anhydrides are added in reactor, add 10 parts of dimethylbenzene, 120~200 DEG C of reaction 4h;Then 10 parts of poly adipate succinic acid ester dihydric alcohols and 8 parts of hydroxy propyl methacrylates, 0.5 are added Part hydroquinones, continue to react at 120~200 DEG C of temperature 3h to acid number be 70~75mgKOH/g, desolvation under vacuo Dimethylbenzene, obtain hydrophilic unsaturated polyester resin;
B), rp-emulsification:Described hydrophilic modified unsaturated polyester resin is cooled to rp-emulsification transition temperature 40 DEG C, add triethylamine-dichloromethane complex and carry out neutralization reaction, then add 2 parts of 2- acrylamide -2,2- dimethyl 85 parts of ethyl sulfonic acid sodium emulsifying agent, deionized water, after phase inversion, continue be added dropwise 110 parts of deionized water, it is final must consolidate contain 30% it is described Modified unsaturated polyester emulsion.
Embodiment 2
A kind of waterborne polyester coating modified unsaturated polyester emulsion, preparation process are as follows:
A), in the reactor equipped with agitator, condenser pipe, constant pressure addition device and thermometer, by 5 parts of trihydroxy methyls third Alkane, 20 parts, 10 parts terephthalic acid (TPA)s of neopentyl glycol, 5 parts of maleic anhydrides, 25 parts of phthalic anhydrides are added in reactor, add 10 part two Toluene, react 4h at 120~200 DEG C;Then 10 parts of PCDLs and 12 parts of methacrylates, 0.5 are added Part hydroquinones, continue to react at 120~200 DEG C of temperature 3h to acid number be 70~80mgKOH/g, desolvation under vacuo Dimethylbenzene, obtain hydrophilic unsaturated polyester resin;
B), rp-emulsification:Described hydrophilic modified unsaturated polyester resin is cooled to rp-emulsification transition temperature 50 DEG C, add triethylamine-dichloromethane complex and carry out neutralization reaction, then add 2.5 parts of propyl group ethyl sulfonic acids of pi-allyl -2 95 parts of sodium emulsifying agent, deionized water, after phase inversion, continue that 120 parts of deionized water is added dropwise, it is final to consolidate containing 30% modification not Saturated polyester emulsion.
Embodiment 3
A kind of waterborne polyester coating modified unsaturated polyester emulsion, preparation process are as follows:
A), in the reactor equipped with agitator, condenser pipe, constant pressure addition device and thermometer, by 2 parts of pentaerythrites, 2 Part trimethylolpropane, 25 parts, 10 parts adipic acids of neopentyl glycol, 5 parts of maleic anhydrides, 15 parts of phthalic anhydrides are added in reactor, are added Add 10 parts of dimethylbenzene, react 4h at 120~200 DEG C;Then 8 parts of PCDLs and 10 parts of hydroxyethyl methacrylate fourths are added Ester, 0.5 part of hydroquinones, continue to react 3h at 120~200 DEG C of temperature to acid number in 40~50mgKOH/g, take off under vacuo Except solvent xylene, hydrophilic unsaturated polyester resin is obtained;
B), rp-emulsification:Described hydrophilic modified unsaturated polyester resin is cooled to rp-emulsification transition temperature 50 DEG C, add triethylamine-dichloromethane complex and carry out neutralization reaction, then add 2 parts of pi-allyl sulfo group alkoxy ambers 100 parts of acid diester sodium emulsifying agent, deionized water, after phase inversion, continue be added dropwise deionized water 125, it is final must consolidate contain 30% it is described Modified unsaturated polyester emulsion.
Modified unsaturated polyester emulsion technology index described in embodiment 1-3 is as shown in table 1:
The modified unsaturated polyester emulsion technology index of table 1
Embodiment Viscosity Glass transition temperature Tg Particle diameter
Embodiment 1 320~350mPas 45℃ 70nm±5nm
Embodiment 2 260~300mPas 35℃ 60nm±5nm
Embodiment 3 400~430mPas 50℃ 90nm±5nm
It is clear that modified unsaturated polyester emulsion described in embodiment 1-3 by same recipe is made into aqueous dual-component polyester woodenware Paint, is contrasted with aqueous double-component polyurethane glossy varnish performance and (does solid work 24h), its technical data is as shown in table 2:
The correlation technique data of table 2
Embodiment Hardness 60 gloss Water resistance, 48h Alkali resistance
Embodiment 1 1H 82~86% Non-foaming non-whitening It is non-foaming wrinkle resistant
Embodiment 2 1H 80~85% Non-foaming non-whitening It is non-foaming wrinkle resistant
Embodiment 3 1H 78~84% Non-foaming non-whitening It is non-foaming wrinkle resistant
Polyurethane 1H 76~82% Non-foaming non-whitening It is non-foaming wrinkle resistant
Although the present invention has been explained in detail and has been cited embodiment, for one of ordinary skill in the art, show Various schemes, modification and the change that can so make as specified above, should be construed as being included within the scope of claim.

Claims (7)

1. a kind of waterborne polyester coating modified unsaturated polyester emulsion, it is characterised in that described waterborne polyester coating is with changing Property unsaturated polyester emulsion, be to introduce unsaturated monomer on traditional polyester molecule chain and be modified to be made modified unsaturated poly- Ester, after reaching 20~80mgKOH/g of defined acid number, solvent removed by vacuum, then be made by inversed phase emulsification;
Described modified unsaturated polyester resin molecular structural formula is as follows:
Wherein, 1- represents R in molecular structural formula1-COO-R2-OCOR3, R1、R2、R3The alkyl of different carbon chain lengths is represented respectively;
Described waterborne polyester coating modified unsaturated polyester emulsion, its preparation process are as follows:
A), in the reactor equipped with agitator, condenser pipe, constant pressure addition device and thermometer, by 30~40 parts of polyalcohols, 20 ~40 parts of organic acid anhydrides are added in reactor, add 10~15 parts of dimethylbenzene, react 4~6h at 160~200 DEG C;Then drop Temperature adds 10~12 parts of modified polyalcohols and 5~10 parts of unsaturated response type monomers, 0.5 part of hydroquinones to 120 DEG C, in temperature It is 20~80mgKOH/g to continue 3~5h of reaction at 120~180 DEG C to acid number, and desolvation, obtains hydrophilic and change under vacuo Property unsaturated polyester resin;
B), rp-emulsification:Described hydrophilic modified unsaturated polyester resin is cooled to rp-emulsification transition temperature 30~60 DEG C, add triethylamine-dichloromethane complex and carry out neutralization reaction;Then add 0.5~5 part of unsaturated reactive emulsifier or 80~125 parts of conventional emulsifier, deionized water, after phase inversion, continue that 40~160 parts of deionized water is added dropwise, finally give and contain admittedly 30%~40% modified unsaturated polyester emulsion.
2. modified unsaturated polyester emulsion according to claim 1, it is characterised in that described polyalcohol be propane diols, Butanediol, neopentyl glycol, ethyl butyl propanediol, glycerine, trimethylolpropane, the one of pentaerythrite and double trimethylolpropane Kind or two kinds.
3. modified unsaturated polyester emulsion according to claim 1, it is characterised in that described organic acid anhydride is isophthalic two Formic acid, terephthalic acid (TPA), tetrachlorophthalic tetrachlorophthalic anhydrid, tetrahydrophthalic anhydride, phthalic anhydride, adipic acid, nonyl two It is more than one or both of acid, decanedioic acid, maleic anhydride, fumaric acid.
4. modified unsaturated polyester emulsion according to claim 1, it is characterised in that described modified polyalcohol is relative Molecular mass is 1000~20000 PPG or PEPA;Described PEPA is polyadipate fourth two It is more than one or both of alcohol ester dihydric alcohol, PCDL, polycaprolactone diols;Described PPG is It is more than one or both of PTMG, polytetramethylene ether diol, polyoxypropylene glycol.
5. modified unsaturated polyester emulsion according to claim 1, it is characterised in that described unsaturated response type monomer For methacryloxy propane diols, to styrene sulfonic acid, adjacent styrene sulfonic acid, α-to styryl acetic acid, methyl-prop Olefin(e) acid hydroxyl ethyl ester, hydroxy propyl methacrylate, methacrylate, trimethylol-propane trimethacrylate, rich horse It is more than one or both of acid, itaconic acid, maleic anhydride.
6. modified unsaturated polyester emulsion according to claim 1, it is characterised in that described unsaturated response type emulsification Agent is 2- acrylamide -2,2- dimethyl ethyl sulfonic acids sodium, vinyl polyethylene glycol, pi-allyl sulfo group alkoxy butanedioic acid diesteras Salt, the propyl group ethyl sulfonic acid of pi-allyl -2 sodium, vinyl -2- propyl group ethyl sulfonic acids sodium, polyethylene glycol oxide nonyl phenolic ether acrylate, octadecane It is more than one or both of base dimethylvinylsiloxy Phenyl chloride;Described conventional emulsifier is OP classes, phenethyl phenol polyoxy Ethene ethers, Tweens, the one or more of fatty alcohol polyethenoxy ether class.
7. modified unsaturated polyester emulsion according to claim 1, it is characterised in that described modified unsaturated polyester breast Liquid is translucent nanometer micro-emulsion, and its particle diameter is 60~100nm.
CN201710659850.6A 2017-08-04 2017-08-04 A kind of waterborne polyester coating modified unsaturated polyester emulsion and preparation method thereof Pending CN107446472A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
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CN108676154A (en) * 2018-07-10 2018-10-19 安徽恒隆新材料有限公司 A kind of polyester resin and its stirred autoclave and application
CN108752601A (en) * 2018-05-28 2018-11-06 安徽汇利涂料科技有限公司 A kind of preparation method of phase inversion waterborne polyester lotion
CN111349222A (en) * 2020-04-26 2020-06-30 江苏富菱化工有限公司 Flexible unsaturated polyester resin and preparation method thereof
CN111393585A (en) * 2020-04-07 2020-07-10 湖南湘江关西涂料(长沙)有限公司 Water-based resin, preparation method and application thereof, water-based paint and film product
CN111574697A (en) * 2020-04-30 2020-08-25 嘉宝莉化工集团股份有限公司 Modified unsaturated polyester resin and preparation method and application thereof
CN115322607A (en) * 2022-09-06 2022-11-11 安徽新大陆特种涂料有限责任公司 Chlorinated polyester alloy heat-resistant anticorrosive paint and preparation process thereof

Citations (2)

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CN108752601A (en) * 2018-05-28 2018-11-06 安徽汇利涂料科技有限公司 A kind of preparation method of phase inversion waterborne polyester lotion
CN108676154A (en) * 2018-07-10 2018-10-19 安徽恒隆新材料有限公司 A kind of polyester resin and its stirred autoclave and application
CN108676154B (en) * 2018-07-10 2020-11-06 安徽恒隆新材料有限公司 Polyester resin and stirring reaction kettle and application thereof
CN111393585A (en) * 2020-04-07 2020-07-10 湖南湘江关西涂料(长沙)有限公司 Water-based resin, preparation method and application thereof, water-based paint and film product
CN111349222A (en) * 2020-04-26 2020-06-30 江苏富菱化工有限公司 Flexible unsaturated polyester resin and preparation method thereof
CN111574697A (en) * 2020-04-30 2020-08-25 嘉宝莉化工集团股份有限公司 Modified unsaturated polyester resin and preparation method and application thereof
CN115322607A (en) * 2022-09-06 2022-11-11 安徽新大陆特种涂料有限责任公司 Chlorinated polyester alloy heat-resistant anticorrosive paint and preparation process thereof
CN115322607B (en) * 2022-09-06 2023-10-13 安徽新大陆特种涂料有限责任公司 Chlorinated polyester alloy heat-resistant anticorrosive paint and preparation process thereof

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Application publication date: 20171208