CN109160993A - A kind of symmetrical more block matt coating UV resins and preparation method thereof of four arm stars - Google Patents
A kind of symmetrical more block matt coating UV resins and preparation method thereof of four arm stars Download PDFInfo
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- CN109160993A CN109160993A CN201810890535.9A CN201810890535A CN109160993A CN 109160993 A CN109160993 A CN 109160993A CN 201810890535 A CN201810890535 A CN 201810890535A CN 109160993 A CN109160993 A CN 109160993A
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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
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
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- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
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- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
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Abstract
The invention discloses a kind of symmetrical more block matt coating UV resins and preparation method thereof of four arm stars.The symmetrical more block matt coating UV resins of the four arms star, there are four symmetrical long-chain-segments in its one's share of expenses for a joint undertaking structure, every strand successively contains polyurethane subchain section, polyethylene glycol subchain section, polyurethane subchain section, acrylate subchain section from center to the periphery.Symmetrically more block matt coatings are solvent-free one kind, one pack system, rapid curing with UV resin and have the UV resin for stablizing matt effect four arm stars of the invention.
Description
Technical field
The present invention relates to UV light-cured resin technical field, the symmetrical more block matt coating UV resins of especially four arm stars
And preparation method thereof.
Background technique
With the upgrading of social industrial level and people's level of consumption, consumer is outer to articles for daily use and industrial goods
Sight, sense of touch, experience comfort level require increasingly harshness.Many top grade articles start to inhale with beautiful, comfortable shape and sense of touch
Draw public attention.The application of matt coating is also just come into being.It is with beautiful appearance, comfortable Human physiology sense of touch,
It gradually gains a place in industries such as automobile interior decoration, electronic products, and increasingly obtains more favors.UV photocuring technology by
, VOC free discharge environmentally protective in its, low power consuming solidify the advantages that quick, become the following green coating with development potential
Material new technology.
The preparation that UV solidifies matt coating material at present relies primarily on addition inorganic filler, i.e., is added into the system of coating
A certain amount of delustring auxiliary agent, silica or aluminum oxide of predominantly various partial sizes etc., these fillers can pass through delustring
Effect reaches matt effect.But the organic system of the inorganic filler of addition and coating is difficult perfection and dissolves each other, it is long-term to place necessarily
Appearance such as separates at the unstable states, in the storage in later period and in use, being located at since the sedimentation of filler may cause inorganic filler
Container bottom, influences the Painting effect in later period, causes adverse effect to production.
For problem noted earlier, there is an urgent need to a kind of stabilization UV of one-component to solidify matt coating in the market.
Summary of the invention
To solve problems of the prior art, the present invention provides four arm stars of one kind symmetrically more block matt coatings use
UV resin and preparation method thereof.
The present invention from the angle of molecule synthesis, propose a kind of four arm stars symmetrically more block matt coatings with UV tree
Rouge, close to the center of four arm star structures, strand contains the polyethylene glycol subchain section easily crystallized, and the high degree of symmetry of segment
Property improves its crystal property, and the high-flexibility aliphatic polyurethane molecule segment for being not easy to crystallize is contained in star-shaped molecule chain periphery,
Contain the acrylate group of UV curable in end.Not by symmetrical polyethylene glycol and the crystal property of polyurethane subchain section
Same, micro compatibility difference, molecule subchain section can generate different refraction coefficients, reach matt effect.
The symmetrical more block matt coating UV resins of four arm stars of the invention, specifically, on molecular structure there is four
Symmetrical long-chain-segment, every long-chain-segment successively contain polyurethane subchain section, polyethylene glycol subchain section, poly- ammonia from center to the periphery
Ester subchain section, acrylate subchain section.
Wherein, one's share of expenses for a joint undertaking structure is shown below:
Wherein, n is the integer of 22-440.
The present invention also provides a kind of preparation sides of the symmetrical more block matt coating UV resins of four arms star as described above
Method comprising following step:
(1) four arm symmetrical centre bodies of polyethylene glycol sealing end are prepared；
(2) isocyanate-terminated acrylate dimer is prepared；
(3) the four arm symmetrical centre bodies for weighing the polyethylene glycol sealing end of a certain amount of step (1) preparation are placed in reaction kettle, are added
The catalyst for entering to account for four arm symmetrical centre weights 0.01~0.5% of polyethylene glycol sealing end, adjusts the temperature to 100~160 DEG C,
Logical nitrogen 10~60 minutes；The isocyanate-terminated acrylate dimer with polyethylene glycol same molar is weighed, is delayed
Slow to be added in reaction kettle, feed time 2~6 hours, insulation reaction 2~5 hours, four arm stars are made, and symmetrically more block matts applied
Layer UV resin.
Wherein, the catalyst is tertiary amines, organic tin, metallic salt catalyst.
In addition, the catalyst is triethylamine, triethylenediamine, stannous octoate, dibutyl tin dilaurate, octanoic acid
One or more of lead, cobalt octoate, iron octoate, zinc naphthenate, tetraisopropyl titanate, tetrabutyl titanate.
In addition, the four arm symmetrical centre bodies that the polyethylene glycol in the step (1) blocks successively are prepared via following step:
I weighs a certain amount of pentaerythrite and is placed in reaction kettle, and addition accounts for urging for pentaerythrite quality 0.01~0.5%
Agent is heated to 180~230 DEG C, leads to nitrogen；
II weighs a certain amount of aliphatic diisocyanate monomer, and weighed amount is 4 times of pentaerythrite mole, delays
It is slow to be added in reaction kettle, feed time 2~6 hours, insulation reaction 2~5 hours；
III weighs a certain amount of polyethylene glycol, and weighed amount is 4 times of pentaerythrite mole, is slowly added to reaction kettle
In, feed time 2~6 hours, insulation reaction 2~5 hours.
Wherein, the catalyst is triethylamine, triethylenediamine, stannous octoate, dibutyl tin dilaurate, octanoic acid
One or more of lead, cobalt octoate, iron octoate, zinc naphthenate, tetraisopropyl titanate, tetrabutyl titanate；The aliphatic
Diisocyanate is one or more of hexamethylene diisocyanate, isophorone diisocyanate；The polyethylene glycol
Molecular weight is 1000~20000g/mol.
In addition, the isocyanate-terminated acrylate dimer in the step (2) is successively prepared via following step:
It weighs a certain amount of aliphatic diisocyanate monomer and is placed in reaction kettle, addition accounts for aliphatic diisocyanate monomer
The catalyst of quality 0.01~0.5% is heated to 35~90 DEG C, leads to nitrogen；Addition and aliphatic diisocyanate monomer etc. rub
The hydroxy-acrylate monomer of your amount, feed time 2~6 hours, insulation reaction 2~5 hours.
In addition, the aliphatic diisocyanate monomer is hexamethylene diisocyanate, isophorone diisocyanate
One or more of；The catalyst is triethylamine, triethylenediamine, stannous octoate, dibutyl tin dilaurate, octanoic acid
One or more of lead, cobalt octoate, iron octoate, zinc naphthenate, tetraisopropyl titanate, tetrabutyl titanate；The hydroxyl third
Olefin(e) acid ester monomer is hydroxy-ethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, one in hydroxy propyl methacrylate
Kind is several.
The present invention also provides a kind of matt coating comprising the symmetrical more block matt coating UV of four arms star as described above
Resin and the crack type photoinitiator for accounting for the UV resin quality 1%~2%；The crack type photoinitiator is 1- hydroxyl ring
One of hexyl phenyl ketone, 2- hydroxy-2-methyl -1- phenyl -1- acetone.
Further, above-mentioned matt coating can be uniformly coated on to the polyester film surface that sided corona treatment is crossed, apply thickness
The uv cure machine solidification 5-20s that 15~35 μm of degree is 1000W with power solidifies flexible matt coating to get ultraviolet light.
Solidify flexible matt coating to ultraviolet light obtained to be tested for the property, this ultraviolet light solidifies flexible matt coating
Matt degree can achieve 60 hereinafter, pencil hardness in 3H or more, when carrying out 180 ° of doublings, has good flexibility.
Compared with prior art, the invention has the following advantages that
(1) symmetrically more block matt coatings with UV resin are solvent-free system UV solidified resin to four arm stars of the invention,
Technique is green and pollution-free, and the emission problem of VOC free meets low-carbon environment-friendly theory.
(2) four arm stars of the invention symmetrically more block matt coatings with UV resin by polyethylene glycol itself in strand
Easily crystallization, and its crystal property is improved close to four arm center area high symmetries, cause and segment end polyurethane acroleic acid
Ester group crystallinity differs greatly, and generates matt effect, and matt effect is highly stable during use, will not be with using
The extension of time changes.
(3) with the four arm stars of the invention coating system that symmetrically prepared by more block matt coatings UV resin without inorganic
The addition of filler, and be one-component resin system, visibly homogeneous stabilization during storage and use, no layering, precipitating, phase
The problem of separation.
(4) because symmetrically more block matt coatings UV resin contains multiple double bond groups, coating to four arm stars of the invention
Curing time it is short, can be fully cured in 5~20S, less energy consumption shortens the production cycle, reduces costs.
(5) when with four arm stars of the invention, symmetrically coating is made with UV resin in more block matt coatings, because of molecular resin
The more vinyl groups contained in structure can guarantee that coating forms fine and close three-dimensional net structure after solidifying, and guarantees the lead of coating
Hardness is in 3H or more.With a large amount of flexible polyurethane group is contained in molecular configurational, it is good flexible to guarantee that coating has
Property, coating is without mark and damage after carrying out multiple 180 ° of doublings.Coating can have both high rigidity and flexibility.
The resulting ultraviolet light of the present invention, which solidifies flexible matt resin, can be widely applied to automobile interior decoration, automobile finish, electricity
The decoration industries such as sub- product.
Detailed description of the invention
Fig. 1 is the infrared spectrum of the symmetrical more block matt coating UV resins of four arm stars made from embodiment 1.
Fig. 2 is the infrared spectrum of the symmetrical more block matt coating UV resins of four arm stars made from embodiment 2.
Fig. 3 is the infrared spectrum of the symmetrical more block matt coating UV resins of four arm stars made from embodiment 3.
Fig. 4 is the infrared spectrum of the symmetrical more block matt coating UV resins of four arm stars made from embodiment 4.
Fig. 5 is the infrared spectrum of the symmetrical more block matt coating UV resins of four arm stars made from embodiment 5.
Fig. 6 is the infrared spectrum of the symmetrical more block matt coating UV resins of four arm stars made from embodiment 6.
Specific embodiment
Technical solution of the present invention is discussed in detail below with reference to embodiment, but the present invention is not limited to these embodiments.
Embodiment 1
It weighs 88.92g (0.4mol) isophorone diisocyanate and is placed in reaction kettle, 0.02g catalyst dibutyltin osmanthus is added
Sour dibutyl tin is heated to 50 DEG C, leads to nitrogen.The hydroxy-ethyl acrylate of addition 46.45g (0.4mol), feed time 4 hours,
Insulation reaction 5 hours, 135.37g (0.4mol) isocyanate-terminated acrylate dimer is made.
The pentaerythrite for weighing 13.62g (0.1mol) is placed in reaction kettle, and two fourth of 0.013g catalyst dibutyltin cinnamic acid is added
Ji Xi is heated to 180 DEG C, leads to nitrogen.88.92g (0.4mol) isophorone diisocyanate is weighed to be slowly added in reaction kettle,
Feed time 5 hours, insulation reaction 3 hours.The polyethylene glycol that 800g (0.4mol) molecular weight is 2000g/mol is weighed, slowly
It is added in reaction kettle, feed time 3 hours, insulation reaction 4 hours.120 DEG C are adjusted the temperature to, 0.005g catalyst dibutyltin is added
The isocyanate-terminated acrylate dimer of the 135.37g prepared (0.4mol) is slowly added to instead by dilaurylate
It answers in kettle, feed time 4 hours, insulation reaction 5 hours, four arm stars symmetrically more block matt coating UV resins is made,
Infrared spectrum is as shown in Figure 1.
To four arm stars of above-mentioned preparation, symmetrically more block coatings carry out ultraviolet light curable with UV resin and can test, and take
20g resin is added 0.3g crack type photoinitiator 1- hydroxycyclohexyl phenyl ketone, is uniformly coated on the PET that sided corona treatment is crossed
Film surface, the uv cure machine solidification 10s that 25 μm of coating layer thickness are 1000W with power solidify flexible matt to get ultraviolet light
Coating, matt degree are 40, pencil hardness 3H, and 180 ° after doubling 30 times without folding line.
Embodiment 2
It weighs 88.92g (0.4mol) isophorone diisocyanate and is placed in reaction kettle, 0.02g catalyst dibutyltin osmanthus is added
Sour dibutyl tin is heated to 35 DEG C, leads to nitrogen.The hydroxyethyl methacrylate of 52.05g (0.4mol) is added, feed time 6 is small
When, insulation reaction 2 hours, 140.97g (0.4mol) isocyanate-terminated acrylate dimer is made.
The pentaerythrite for weighing 13.62g (0.1mol) is placed in reaction kettle, and two fourth of 0.068g catalyst dibutyltin cinnamic acid is added
Ji Xi is heated to 180 DEG C, leads to nitrogen.88.92g (0.4mol) isophorone diisocyanate is weighed to be slowly added in reaction kettle,
Feed time 5 hours, insulation reaction 3 hours.The polyethylene glycol that 400g (0.4mol) molecular weight is 1000g/mol is weighed, slowly
It is added in reaction kettle, feed time 3 hours, insulation reaction 4 hours.120 DEG C are adjusted the temperature to, 0.005g catalyst dibutyltin is added
The isocyanate-terminated acrylate dimer of the 140.97g prepared (0.4mol) is slowly added to instead by dilaurylate
It answers in kettle, feed time 4 hours, insulation reaction 5 hours, four arm stars symmetrically more block matt coating UV resins is made,
Infrared spectrum is as shown in Figure 2.
To four arm stars of above-mentioned preparation, symmetrically more block matt coatings carry out ultraviolet light curable with UV resin and can test,
20g resin is taken, 0.3g crack type photoinitiator 1- hydroxycyclohexyl phenyl ketone is added, is uniformly coated on what sided corona treatment was crossed
PET film surface, the uv cure machine solidification 10s that 25 μm of coating layer thickness are 1000W with power solidify flexible to get ultraviolet light
Matt coating, matt degree are 40, pencil hardness 3H, and 180 ° after doubling 30 times without folding line.
Embodiment 3
It weighs 88.92g (0.4mol) isophorone diisocyanate and is placed in reaction kettle, it is sub- that 0.44g octoate catalyst is added
Tin is heated to 90 DEG C, leads to nitrogen.The hydroxy propyl methacrylate of 58.03g (0.4mol) is added, feed time 2 hours, keeps the temperature
146.95g (0.4mol) isocyanate-terminated acrylate dimer is made in reaction 5 hours.
The pentaerythrite for weighing 13.62g (0.1mol) is placed in reaction kettle, and 0.44g catalyst zinc naphthenate, heating is added
To 230 DEG C, lead to nitrogen.It weighs 88.92g (0.4mol) isophorone diisocyanate to be slowly added in reaction kettle, feed time 6
Hour, insulation reaction 2 hours.The polyethylene glycol that 1200g (0.4mol) molecular weight is 3000g/mol is weighed, is slowly added to react
In kettle, feed time 3 hours, insulation reaction 4 hours.120 DEG C are adjusted the temperature to, two fourth of 0.005g catalyst dibutyltin cinnamic acid is added
The isocyanate-terminated acrylate dimer of the 146.95g prepared (0.4mol) is slowly added in reaction kettle, adds by Ji Xi
Insulation reaction 5 hours, four arm stars symmetrically more block matt coating UV resins are made, infrared spectrum is such as in the material time 4 hours
Shown in Fig. 3.
To four arm stars of above-mentioned preparation, symmetrically more block matt coatings carry out ultraviolet light curable with UV resin and can test,
20g resin is taken, 0.3g crack type photoinitiator 1- hydroxycyclohexyl phenyl ketone is added, is uniformly coated on what sided corona treatment was crossed
PET film surface, the uv cure machine solidification 10s that 25 μm of coating layer thickness are 1000W with power solidify flexible to get ultraviolet light
Matt coating, matt degree are 40, pencil hardness 3H, and 180 ° after doubling 30 times without folding line.
Embodiment 4
It weighs 67.28g (0.4mol) hexamethylene diisocyanate and is placed in reaction kettle, 0.02g catalyst metatitanic acid four is added
Isopropyl ester is heated to 50 DEG C, leads to nitrogen.The hydroxy propyl methacrylate of addition 58.03g (0.4mol), feed time 4 hours,
Insulation reaction 5 hours, 125.31g (0.4mol) isocyanate-terminated acrylate dimer is made.
The pentaerythrite for weighing 13.62g (0.1mol) is placed in reaction kettle, and 0.01g catalyst tetraisopropyl titanate is added,
230 DEG C are heated to, nitrogen is led to.It weighs 67.28g (0.4mol) hexamethylene diisocyanate to be slowly added in reaction kettle, feed
Time 2 h, insulation reaction 5 hours.The polyethylene glycol that 1200g (0.4mol) molecular weight is 3000g/mol is weighed, is slowly added to
In reaction kettle, feed time 3 hours, insulation reaction 4 hours.120 DEG C are adjusted the temperature to, it is different to add 0.005g catalyst metatitanic acid four
The isocyanate-terminated acrylate dimer of the 125.31g prepared (0.4mol) is slowly added in reaction kettle, adds by propyl ester
Insulation reaction 5 hours, four arm stars symmetrically more block matt coating UV resins are made, infrared spectrum is such as in the material time 4 hours
Shown in Fig. 4.
To four arm stars of above-mentioned preparation, symmetrically more block matt coatings carry out ultraviolet light curable with UV resin and can test,
20g resin is taken, 0.3g crack type photoinitiator 1- hydroxycyclohexyl phenyl ketone is added, is uniformly coated on what sided corona treatment was crossed
PET film surface, the uv cure machine solidification 10s that 25 μm of coating layer thickness are 1000W with power solidify flexible to get ultraviolet light
Matt coating, matt degree are 40, pencil hardness 3H, and 180 ° after doubling 30 times without folding line.
Embodiment 5
It weighs 67.28g (0.4mol) hexamethylene diisocyanate and is placed in reaction kettle, 0.33g catalyst Sanya second is added
Base diamines is heated to 50 DEG C, leads to nitrogen.The hydroxyethyl methacrylate of addition 52.05g (0.4mol), feed time 4 hours,
Insulation reaction 5 hours, 119.33g (0.4mol) isocyanate-terminated acrylate dimer is made.
The pentaerythrite for weighing 13.62g (0.1mol) is placed in reaction kettle, and 0.01g catalyst tetraisopropyl titanate is added,
200 DEG C are heated to, nitrogen is led to.It weighs 67.28g (0.4mol) hexamethylene diisocyanate to be slowly added in reaction kettle, feed
Time 5 hours, insulation reaction 3 hours.The polyethylene glycol that 800g (0.4mol) molecular weight is 2000g/mol is weighed, is slowly added to
In reaction kettle, feed time 3 hours, insulation reaction 4 hours.120 DEG C are adjusted the temperature to, it is different to add 0.005g catalyst metatitanic acid four
The isocyanate-terminated acrylate dimer of the 119.33g prepared (0.4mol) is slowly added in reaction kettle, adds by propyl ester
Insulation reaction 5 hours, four arm stars symmetrically more block matt coating UV resins are made, infrared spectrum is such as in the material time 4 hours
Shown in Fig. 5.
To four arm stars of above-mentioned preparation, symmetrically more block matt coatings carry out ultraviolet light curable with UV resin and can test,
20g resin is taken, 0.3g crack type photoinitiator 1- hydroxycyclohexyl phenyl ketone is added, is uniformly coated on what sided corona treatment was crossed
PET film surface, the uv cure machine solidification 10s that 25 μm of coating layer thickness are 1000W with power solidify flexible to get ultraviolet light
Matt coating, matt degree are 40, pencil hardness 3H, and 180 ° after doubling 30 times without folding line.
Embodiment 6
It weighs 67.28g (0.4mol) hexamethylene diisocyanate and is placed in reaction kettle, 0.02g catalyst metatitanic acid four is added
Isobutyl ester is heated to 50 DEG C, leads to nitrogen.The hydroxy-ethyl acrylate of 46.44g (0.4mol) is added, feed time 4 hours, keeps the temperature
113.72g (0.4mol) isocyanate-terminated acrylate dimer is made in reaction 5 hours.
The pentaerythrite for weighing 13.62g (0.1mol) is placed in reaction kettle, and 0.01g catalyst tetraisopropyl titanate is added,
180 DEG C are heated to, nitrogen is led to.It weighs 67.28g (0.4mol) hexamethylene diisocyanate to be slowly added in reaction kettle, feed
Time 5 hours, insulation reaction 3 hours.The polyethylene glycol that 400g (0.4mol) molecular weight is 1000g/mol is weighed, is slowly added to
In reaction kettle, feed time 3 hours, insulation reaction 4 hours.120 DEG C are adjusted the temperature to, it is different to add 0.005g catalyst metatitanic acid four
The isocyanate-terminated acrylate dimer of the 113.72g prepared (0.4mol) is slowly added in reaction kettle, adds by propyl ester
Insulation reaction 5 hours, four arm stars symmetrically more block matt coating UV resins are made, infrared spectrum is such as in the material time 4 hours
Shown in Fig. 6.
To four arm stars of above-mentioned preparation, symmetrically more block matt coatings carry out ultraviolet light curable with UV resin and can test,
20g resin is taken, 0.3g crack type photoinitiator 1- hydroxycyclohexyl phenyl ketone is added, is uniformly coated on what sided corona treatment was crossed
PET film surface, the uv cure machine solidification 10s that 25 μm of coating layer thickness are 1000W with power solidify flexible to get ultraviolet light
Matt coating, matt degree are 40, pencil hardness 3H, and 180 ° after doubling 30 times without folding line.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (10)
1. a kind of symmetrical more block matt coating UV resins of four arm stars, which is characterized in that have on its molecular structure four it is right
The long-chain-segment of title, every long-chain-segment successively contain polyurethane subchain section, polyethylene glycol subchain section, polyurethane from center to the periphery
Subchain section, acrylate subchain section.
2. UV resin according to claim 1, which is characterized in that its molecular structure is shown below:
Wherein, n is the integer of 22-440.
3. a kind of preparation method of the symmetrical more block matt coating UV resins of four arms star as claimed in claim 1 or 2,
It is characterized in that, includes the following steps:
(1) four arm symmetrical centre bodies of polyethylene glycol sealing end are prepared；
(2) isocyanate-terminated acrylate dimer is prepared；
(3) the four arm symmetrical centre bodies for weighing the polyethylene glycol sealing end of a certain amount of step (1) preparation are placed in reaction kettle, and addition accounts for
The catalyst of four arm symmetrical centre weights 0.01~0.5% of polyethylene glycol sealing end, adjusts the temperature to 100~160 DEG C, leads to nitrogen
Gas 10~60 minutes；The isocyanate-terminated acrylate dimer with polyethylene glycol same molar is weighed, is slowly added
Enter in reaction kettle, feed time 2~6 hours, insulation reaction 2~5 hours, four arm stars are made, and symmetrically more block matt coatings are used
UV resin.
4. preparation method according to claim 3, which is characterized in that the catalyst is tertiary amines, organic tin, metal
Saline catalyst.
5. the preparation method according to claim 4, which is characterized in that the catalyst be triethylamine, triethylenediamine,
Stannous octoate, dibutyl tin dilaurate, lead octoate, cobalt octoate, iron octoate, zinc naphthenate, tetraisopropyl titanate, metatitanic acid four are different
One or more of butyl ester.
6. preparation method according to claim 3, which is characterized in that four of the polyethylene glycol sealing end in the step (1)
Arm symmetrical centre body is successively prepared via following step:
I weighs a certain amount of pentaerythrite and is placed in reaction kettle, and the catalyst for accounting for pentaerythrite quality 0.01~0.5% is added,
180~230 DEG C are heated to, nitrogen is led to；
II weighs a certain amount of aliphatic diisocyanate monomer, and weighed amount is 4 times of pentaerythrite mole, slowly adds
Enter in reaction kettle, feed time 2~6 hours, insulation reaction 2~5 hours；
III weighs a certain amount of polyethylene glycol, and weighed amount is 4 times of pentaerythrite mole, is slowly added in reaction kettle,
Feed time 2~6 hours, insulation reaction 2~5 hours.
7. preparation method according to claim 6, which is characterized in that the catalyst is triethylamine, triethylene two
Amine, stannous octoate, dibutyl tin dilaurate, lead octoate, cobalt octoate, iron octoate, zinc naphthenate, tetraisopropyl titanate, metatitanic acid
One or more of four isobutyl esters；The aliphatic diisocyanate is hexamethylene diisocyanate, isophorone two is different
One or more of cyanate；The molecular weight polyethylene glycol is 1000~20000g/mol.
8. preparation method according to claim 3, which is characterized in that isocyanate-terminated third in the step (2)
Olefin(e) acid ester dimer is successively prepared via following step:
It weighs a certain amount of aliphatic diisocyanate monomer and is placed in reaction kettle, addition accounts for aliphatic diisocyanate monomer mass
0.01~0.5% catalyst is heated to 35~90 DEG C, leads to nitrogen；It is added and aliphatic diisocyanate monomer equimolar amounts
Hydroxy-acrylate monomer, feed time 2~6 hours, insulation reaction 2~5 hours.
9. preparation method according to claim 8, which is characterized in that the aliphatic diisocyanate monomer is six methylenes
One or more of group diisocyanate, isophorone diisocyanate；The catalyst is triethylamine, triethylene two
Amine, stannous octoate, dibutyl tin dilaurate, lead octoate, cobalt octoate, iron octoate, zinc naphthenate, tetraisopropyl titanate, metatitanic acid
One or more of four isobutyl esters；The hydroxy-acrylate monomer is hydroxy-ethyl acrylate, hydroxyethyl methacrylate, third
One or more of olefin(e) acid hydroxypropyl acrylate, hydroxy propyl methacrylate.
10. a kind of matt coating, which is characterized in that symmetrically how embedding including four arm stars described in any one of claim 1-9
Duan Yaguang coating is with UV resin and accounts for the crack type photoinitiator of the UV resin quality 1%~2%；
The crack type photoinitiator is 1- hydroxycyclohexyl phenyl ketone, in 2- hydroxy-2-methyl -1- phenyl -1- acetone
It is a kind of.
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