CN104371087A - Coating polymer for polyurethane photocuring modified water-based chlorinated polypropylene BOPP (biaxially-oriented polypropylene), and preparation and application thereof - Google Patents
Coating polymer for polyurethane photocuring modified water-based chlorinated polypropylene BOPP (biaxially-oriented polypropylene), and preparation and application thereof Download PDFInfo
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- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
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- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
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- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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Abstract
The invention belongs to the field of polymer coating materials, and discloses a coating polymer for polyurethane photocuring modified water-based chlorinated polypropylene BOPP (biaxially-oriented polypropylene), and a preparation and application thereof. By using the chlorinated polypropylene with similar structure to the BOPP as the framework polymer, the chlorinated polypropylene is subjected to hydrophile modification by acrylate monomer to introduce hydrophilic group and active group, and then is modified by the polyurethane. The coating polymer can be made into an environment-friendly water-based coating material which has excellent adhesive force on the BOPP. The coating material has the advantages of high surface energy and high binding force for BOPP, and the ink has favorable spreadability and binding effect on the coating material. The coating material contains the photocuring group, and can connect the coating polymer with the ink through the covalent bond in the printing process, thereby enhancing the binding force between the coating material and ink. The coating polymer can synchronously achieve the goals of enhancing the binding force between the coating and BOPP and the binding force between the coating and ink.
Description
Technical field
The invention belongs to polymer coating materials field, be specifically related to a kind of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric and its preparation method and application.
Background technology
The productive life of people be unable to do without plastic wrapping, and at present, topmost packing plastics film is BiOriented Polypropylene Films (BOPP).BOPP is nonpolarity, and surface energy is low, and ink sticking power on film is lower, there is a difficult problem for printing difficulty.Exactly certain being coated on film surface to the macromolecular solution that ink and base material all have bonds well power, forming coating, then in coating, be coated with ink printing again, is a kind of effective ways improving cohesive force between BOPP film and printing-ink.
Coated material at present for BOPP can be divided into solvent-based coating material and aqueous coating material.Solvent-based coating material binding power is good, but the solvent in traditional solvent-based coating material is everlasting more than 40%, causes serious pollution to environment.The great advantage of aqueous coating material is the consumption greatly reducing organic volatile compound (VOC), meets environment protection requirement.
At present in the coated material of BOPP, its coated polymeric mainly contains polyacrylate(s), polyurethanes, Chlorinated Polypropylene III class etc.Wherein Chlorinated Polypropylene III is good to BOPP sticking power, is conventional BOPP coated polymeric.But CPP polarity is low, and surface energy is low, not easily realizes Water-borne modification.There is stability of emulsion difference and the problem such as sticking power is not good in the CPP after current water-solubility modifying, its application performance does not still meet service requirements.Urethane type coatings material surface energy is high, and ink and sizing agent etc. are sprawled effective on polyurethane coating material; And polyurethane molecular polarity is large, and itself and most of ink and sizing agent bonding force strong.But urethane type coatings material is poor to BOPP sticking power.Therefore adopt polyurethane-modified Chlorinated Polypropylene III, in conjunction with the advantage of two kinds of different coating materials, be expected to prepare surface energy high, to ink and the good novel environment friendly coated material of BOPP sticking power.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art with not enough, primary and foremost purpose of the present invention is by Molecular Structure Design, has synthesized a kind of above-mentioned urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric.
Another object of the present invention is the preparation method providing a kind of above-mentioned urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric.
Another object of the present invention is the application providing a kind of above-mentioned urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated material.
Object of the present invention is realized by following proposal:
Urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric, this polymkeric substance has such as formula structure (1) Suo Shi:
Wherein R=H or CH
3; N is the natural number between 4 ~ 14; R
1for
m is the natural number between 17 ~ 34, and p is the natural number between 14 ~ 28; R
2for
The preparation method of above-mentioned urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric, according to following operation steps: the preparation of (1) water-solubility modifying Chlorinated Polypropylene III prepolymer; (2) preparation of polyurethane prepolymer; (3) preparation of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric.
Described water-solubility modifying Chlorinated Polypropylene III prepolymer has such as formula structure (2) Suo Shi, its preparation method is: add Chlorinated Polypropylene III 20 ~ 40 weight part and solvent 60 ~ 100 weight part in a reservoir, stir 30min, be warming up to 95 ~ 110 DEG C, add Hydroxyethyl acrylate or hydroxyethyl methylacrylate 1 ~ 3 weight part, acrylic or methacrylic acid 2 ~ 4 weight part, maleic anhydride 1 ~ 2 weight part, alkyl acrylate 1 ~ 4 weight part and initiator 1 ~ 3 weight part, reaction 6 ~ 9h, obtains water-solubility modifying Chlorinated Polypropylene III coated polymeric;
Wherein R=H or CH
3; N is the natural number between 4 ~ 14;
Described solvent is at least one in toluene, dimethylbenzene, butylacetate; The chloride mass percent of described Chlorinated Polypropylene III is 20 ~ 60%; Described alkyl acrylate is at least one in butyl acrylate, Isooctyl acrylate monomer, lauryl acrylate, tetradecyl acrylate; Described initiator is at least one in benzoyl peroxide, dilauroyl peroxide, di-t-butyl peroxide.
Described polyurethane prepolymer has such as formula structure (3) Suo Shi, its preparation method is: add polyether glycol 40 ~ 60 weight part and vulcabond 6 ~ 10 weight part in a reservoir, be warming up to 65 ~ 80 DEG C, add catalyzer 0.005 ~ 0.01 weight part stirring reaction 2h, add acetone 30 ~ 50 weight part and stopper 0.02 ~ 0.1 weight part, drip hydroxyethyl methylacrylate 1 ~ 3 part in 1h, continue stirring reaction 2h and obtain polyurethane prepolymer;
Wherein R
1for
m is the natural number between 17 ~ 34, and p is the natural number between 14 ~ 28; R
2for
Described polyether glycol to be molecular weight be 1000 polyoxypropyleneglycol, molecular weight be the polyoxypropyleneglycol of 2000, molecular weight be 1000 polytetrahydrofuran diol and molecular weight be at least one in the polytetrahydrofuran diol of 2000; Described vulcabond is toluene and at least one in isocyanic ester, isophorone diisocyanate; Described catalyzer is at least one in dibutyl tin laurate, stannous octoate; Described stopper is at least one in Resorcinol or toluhydroquinone.
Described step (3) is specifically according to following operation steps: add step (1) gained water-solubility modifying Chlorinated Polypropylene III prepolymer 50 ~ 60 weight part and step (2) gained polyurethane prepolymer 5 ~ 10 weight part in a reservoir, 70 ~ 90 DEG C of reaction 6h, obtain urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric after purifying.
Above-mentioned a kind of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric is preparing the application in urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated material, described application is according to following operation steps: be dissolved in solvent by urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric 20 ~ 40 weight part, be neutralized to neutrality, add water 60 ~ 100 weight part, dispersed with stirring, except desolventizing, obtain the poly-urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated material of solid content 17 ~ 40%.Described solvent is at least one in toluene, dimethylbenzene, butylacetate.
Principle of the present invention is: 1) graft acrylic acid and acrylic polymer on molecular structure, introduces hydrophilic radical, is expected to make it have wetting ability; 2) on Chlorinated Polypropylene III molecule, introduce active group by modification, then introduce polyurethane structural, be expected to improve surface energy, make ink can in coating uniform spreading, synchronous realize improving the cohesive force of coated material to ink and BOPP; 3) containing ultraviolet curing group in new coated polymeric structure, be expected to realize part or all of ultraviolet curing group in printing process and embed in the cross-linked network structure of ink, improve the reactive force between Chlorinated Polypropylene III and ink.Synchronous realization improves between coating and BOPP, the object of cohesive force between coating and ink.
The present invention, relative to prior art, has following advantage and beneficial effect:
(1) the present invention prepares novel polyurethane-modified watersoluble chlorinated polypropylerie coated polymeric, the BOPP coated material of the environmental protection utilizing this coated polymeric to obtain, and obtained coated material is excellent to BOPP cohesive force.
(2) contain polyurethane structural in urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric structure of the present invention, coated material surface property is good, and surface energy is high, and ink is sprawled effective on coated material.And containing ultraviolet curing group in coated polymeric structure, can embed in the cross-linked network of ink in BOPP printing process, realize the object of the cohesive force improved between coated material and ink.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
In the following example, each performance perameter measures in accordance with the following methods:
Coated material application performance measures:
Surface tension: measure by ISO8296-2003.
Sticking power: adopt 3M600 adhesive tape to measure.
Transparency: appearance method
Embodiment 1:
(1) preparation of water-solubility modifying Chlorinated Polypropylene III prepolymer: by weight, get Chlorinated Polypropylene III (chloride mass percent 30%) 30 parts, dimethylbenzene 100 parts is dissolved in the reactor with agitator, prolong, stir 30min, be warming up to 110 DEG C, add hydroxyethyl methylacrylate 1 part, 4 parts, vinylformic acid, maleic anhydride 2 parts, butyl acrylate 4 parts, benzoyl peroxide 1.5 parts, reaction 7h, the obtained water-solubility modifying Chlorinated Polypropylene III prepolymer had such as formula structure (2) Suo Shi;
(2) preparation of polyurethane prepolymer: by weight, 40 parts, isophorone diisocyanate 6 parts that molecular weight is 2000 is added in the reactor that agitator, prolong are housed, be warming up to 75 DEG C, add dibutyl tin laurate 0.006 part, stirring reaction 2h; Then add 45 parts, acetone, toluhydroquinone 0.1 part, in 1h, drip hydroxyethyl methylacrylate 1.5 parts, continue stirring reaction 2h, obtain that there is the polyurethane prepolymer such as formula structure (3) Suo Shi;
(3) preparation of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric: aqueousization modified chlorinated polypropylene prepolymer 50 parts and polyurethane prepolymer 8 parts, 85 DEG C of reaction 6h, obtain urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric after purifying.
(4) getting above-mentioned coated polymeric 40 parts is dissolved in dimethylbenzene, adds 60 parts, water, dispersed with stirring, except desolventizing, obtains the poly-urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated material of solid content 40%.
(5) get coated material and be coated with the thick film of 0.08mm at BOPP film surface, except desolventizing, distance wavelength is the ultraviolet lamp 4cm of 275nm, irradiates 2min, then measures coated material application performance.
Products obtained therefrom performance test results is as shown in table 1.Test performance is as follows: surface tension: 44 dyne; Sticking power: coating does not come off; Transparency: unchanged before and after film.
Embodiment 2:
(1) preparation of water-solubility modifying Chlorinated Polypropylene III prepolymer: by weight, get Chlorinated Polypropylene III (chloride mass percent 30%) 30 parts, dimethylbenzene 90 parts is dissolved in the reactor with agitator, prolong, stir 30min, be warming up to 110 DEG C, add Hydroxyethyl acrylate 1.8 parts, 4 parts, vinylformic acid, maleic anhydride 1.1 parts, Isooctyl acrylate monomer 3.6 parts, benzoyl peroxide 2.2 parts, reaction 6h, the obtained water-solubility modifying Chlorinated Polypropylene III prepolymer had such as formula structure (2) Suo Shi;
(2) preparation of polyurethane prepolymer: by weight, polytetrahydrofuran diol 40 parts, isophorone diisocyanate 8 parts that molecular weight is 2000 is added in the reactor that agitator, prolong are housed, be warming up to 80 DEG C, add stannous octoate 0.01 part, stirring reaction 2h, then add 36 parts, acetone, toluhydroquinone 0.03 part, drip hydroxyethyl methylacrylate 1.5 parts in 1h, continue stirring reaction 2h, obtain that there is the polyurethane prepolymer such as formula structure (3) Suo Shi;
(3) preparation of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric: aqueousization modified chlorinated polypropylene prepolymer 50 parts and polyurethane prepolymer 5 parts, 85 DEG C of reaction 6h, obtain urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric after purifying.
(4) getting above-mentioned coated polymeric 30 parts is dissolved in dimethylbenzene, adds 75 parts, water, dispersed with stirring, except desolventizing, obtains the urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated material of solid content 29%.
(5) get coated material and be coated with the thick film of 0.08mm at BOPP film surface, except desolventizing, distance wavelength is the ultraviolet lamp 4cm of 275nm, irradiates 2min, then measures coated material application performance.
Products obtained therefrom performance test results is as shown in table 1.Test performance is as follows: surface tension: 42 dyne; Sticking power: coating does not come off; Transparency: unchanged before and after film.
Embodiment 3:
(1) preparation of water-solubility modifying Chlorinated Polypropylene III prepolymer: by weight, get Chlorinated Polypropylene III (chloride mass percent 20% is 1:1 with chloride mass percent 60% mass ratio) 28 parts, dimethylbenzene 80 parts is dissolved in the reactor with agitator, prolong, stir 30min, be warming up to 95 DEG C, add Hydroxyethyl acrylate 3 parts, methacrylic acid 3 parts, maleic anhydride 1.5 parts, lauryl acrylate 4 parts, benzoyl peroxide 3 parts, reaction 6h, the obtained water-solubility modifying Chlorinated Polypropylene III prepolymer had such as formula structure (2) Suo Shi;
(2) preparation of polyurethane prepolymer: by weight, polyoxypropyleneglycol 48 parts, tolylene diisocyanate 9.2 parts that molecular weight is 1000 is added in the reactor that agitator, prolong are housed, be warming up to 70 DEG C, add dibutyl tin laurate 0.01 part, stirring reaction 2h, then 50 parts, acetone is added, Resorcinol 0.05 part, hydroxyethyl methylacrylate 1.8 parts is dripped in 1h, continue stirring reaction 2h, obtain that there is the polyurethane prepolymer such as formula structure (3) Suo Shi;
(3) preparation of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric: aqueousization modified chlorinated polypropylene prepolymer 51 parts and polyurethane prepolymer 7 parts, 80 DEG C of reaction 6h, obtain urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric after purifying.
(4) getting above-mentioned coated polymeric 30 parts is dissolved in butylacetate, adds moisture content, dispersed with stirring, except desolventizing, obtains the urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated material of solid content 33%.
(5) get coated material and be coated with the thick film of 0.08mm at BOPP film surface, except desolventizing, distance wavelength is the ultraviolet lamp 4cm of 275nm, irradiates 2min, then measures coated material application performance.
Products obtained therefrom performance test results is as shown in table 1.Test performance is as follows: surface tension: 43 dyne; Sticking power: coating does not come off; Transparency: unchanged before and after film.
Embodiment 4:
(1) preparation of water-solubility modifying Chlorinated Polypropylene III prepolymer: by weight, get Chlorinated Polypropylene III (chloride mass percent 35%) 40 parts, butylacetate 90 parts is dissolved in the reactor with agitator, prolong, stir 30min, be warming up to 100 DEG C, add Hydroxyethyl acrylate 1.8 parts, methacrylic acid 2.8 parts, maleic anhydride 1.3 parts, tetradecyl acrylate 2.6 parts, dilauroyl peroxide 2 parts, reaction 8h, the obtained water-solubility modifying Chlorinated Polypropylene III prepolymer had such as formula structure (2) Suo Shi;
(2) preparation of polyurethane prepolymer: by weight, polyoxypropyleneglycol 40 parts, tolylene diisocyanate 7.8 parts that molecular weight is 1000 is added in the reactor that agitator, prolong are housed, be warming up to 65 DEG C, Resorcinol 0.02 part, add dibutyl tin laurate 0.005 part, stirring reaction 2h, then 30 parts, acetone is added, hydroxyethyl methylacrylate 2 parts is dripped in 1h, continue stirring reaction 2h, obtain that there is the water polyurethane prepolymer such as formula structure (3) Suo Shi;
(3) preparation of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric: aqueousization modified chlorinated polypropylene prepolymer 60 parts and polyurethane prepolymer 5 parts, 70 DEG C of reaction 6h, obtain urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric after purifying.
(4) getting above-mentioned coated polymeric 20 parts is dissolved in toluene, adds 60 parts, water, dispersed with stirring, except desolventizing, obtains the urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated material of solid content 25%.
(5) get coated material and be coated with the thick film of 0.08mm at BOPP film surface, except desolventizing, distance wavelength is the ultraviolet lamp 4cm of 275nm, irradiates 2min, then measures coated material application performance.
Products obtained therefrom performance test results is as shown in table 1.Test performance is as follows: surface tension: 41 dyne; Sticking power: coating does not come off; Transparency: unchanged before and after film.
Embodiment 5:
(1) preparation of water-solubility modifying Chlorinated Polypropylene III prepolymer: by weight, get Chlorinated Polypropylene III (chloride mass percent 30%) 35 parts, toluene 70 parts is dissolved in the reactor with agitator, prolong, stir 30min, be warming up to 100 DEG C, add hydroxyethyl methylacrylate 3 parts, 3.5 parts, vinylformic acid, maleic anhydride 1 part, butyl acrylate 1.6 parts, di-t-butyl peroxide 1.8 parts, reaction 7.5h, the obtained water-solubility modifying Chlorinated Polypropylene III prepolymer had such as formula structure (2) Suo Shi;
(2) preparation of polyurethane prepolymer: by weight, polyoxypropyleneglycol 54 parts, tolylene diisocyanate 9.5 parts that molecular weight is 1000 is added in the reactor that agitator, prolong are housed, be warming up to 80 DEG C, add stannous octoate 0.008 part, stirring reaction 2h, then add 48 parts, acetone, Resorcinol 0.08 part, drip hydroxyethyl methylacrylate 1.6 parts in 1h, continue stirring reaction 2h, obtain that there is the polyurethane prepolymer such as formula structure (3) Suo Shi;
(3) preparation of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric: aqueousization modified chlorinated polypropylene prepolymer 56 parts and polyurethane prepolymer 7 parts, 85 DEG C of reaction 6h, obtain urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric after purifying.
(4) getting above-mentioned coated polymeric 36 parts is dissolved in toluene, adds 60 parts, water, dispersed with stirring, except desolventizing, obtains the urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated material of solid content 38%.
(5) get coated material and be coated with the thick film of 0.08mm at BOPP film surface, except desolventizing, distance wavelength is the ultraviolet lamp 4cm of 275nm, irradiates 2min, then measures coated material application performance.
Products obtained therefrom performance test results is as shown in table 1.Test performance is as follows: surface tension: 43 dyne; Sticking power: coating does not come off; Transparency: unchanged before and after film.
Embodiment 6:
(1) preparation of water-solubility modifying Chlorinated Polypropylene III prepolymer: by weight, get Chlorinated Polypropylene III (chloride mass percent 20%) 20 parts, toluene 60 parts is dissolved in the reactor with agitator, prolong, stir 30min, be warming up to 110 DEG C, add Hydroxyethyl acrylate 1 part, 2 parts, vinylformic acid, maleic anhydride 1 part, butyl acrylate 1 part, benzoyl peroxide 1.2 parts, reaction 6h, the obtained water-solubility modifying Chlorinated Polypropylene III prepolymer had such as formula structure (2) Suo Shi;
(2) preparation of polyurethane prepolymer: by weight, polytetrahydrofuran diol 60 parts, tolylene diisocyanate 10 parts that molecular weight is 1000 is added in the reactor that agitator, prolong are housed, be warming up to 75 DEG C, add dibutyl tin laurate 0.01 part, stirring reaction 2h, then add 50 parts, acetone, Resorcinol 0.05 part, drip hydroxyethyl methylacrylate 3 parts in 1h, continue stirring reaction 2h, obtain that there is the polyurethane prepolymer such as formula structure (3) Suo Shi;
(3) preparation of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric: aqueousization modified chlorinated polypropylene prepolymer 60 parts and polyurethane prepolymer 10 parts, 90 DEG C of reaction 6h, obtain urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric after purifying.
(4) get above-mentioned coated polymeric 20 parts to dissolve in toluene, add 100 parts, water, dispersed with stirring, except desolventizing, obtain the urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated material of solid content 17%.
(5) get coated material and be coated with the thick film of 0.08mm at BOPP film surface, except desolventizing, distance wavelength is the ultraviolet lamp 4cm of 275nm, irradiates 2min, then measures coated material application performance.
Products obtained therefrom performance test results is as shown in table 1.Test performance is as follows: surface tension: 44 dyne; Sticking power: coating does not come off; Transparency: unchanged before and after film.
Can be found out by table 1, the coated material adopting urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric of the present invention to prepare sticking power on BOPP is excellent; And coated material can carry out photocuring, can embed in ink cross-linked network in printing process, realize the object improving cohesive force between coated material and ink.
Table 1 urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric application performance index
| Surface tension/dyne | Sticking power | Transparency | |
| Embodiment 1 | 44 | Coating does not come off | Unchanged before and after film |
| Embodiment 2 | 42 | Coating does not come off | Unchanged before and after film |
| Embodiment 3 | 43 | Coating does not come off | Unchanged before and after film |
| Embodiment 4 | 41 | Coating does not come off | Unchanged before and after film |
| Embodiment 5 | 43 | Coating does not come off | Unchanged before and after film |
| Embodiment 6 | 44 | Coating does not come off | Unchanged before and after film |
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (7)
1. urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric, is characterized in that: this polymkeric substance has such as formula structure (1) Suo Shi:
Wherein R=H or CH
3; N is the natural number between 4 ~ 14; R
1for
or
m is the natural number between 17 ~ 34, and p is the natural number between 14 ~ 28; R
2for
2. the preparation method of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric according to claim 1, is characterized in that according to following operation steps: the preparation of (1) water-solubility modifying Chlorinated Polypropylene III prepolymer; (2) preparation of polyurethane prepolymer; (3) preparation of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric.
3. preparation method according to claim 2, it is characterized in that: described water-solubility modifying Chlorinated Polypropylene III prepolymer has such as formula structure (2) Suo Shi, its preparation method is: add Chlorinated Polypropylene III 20 ~ 40 weight part and solvent 60 ~ 100 weight part in a reservoir, stir 30min, be warming up to 95 ~ 110 DEG C, add Hydroxyethyl acrylate or hydroxyethyl methylacrylate 1 ~ 3 weight part, acrylic or methacrylic acid 2 ~ 4 weight part, maleic anhydride 1 ~ 2 weight part, alkyl acrylate 1 ~ 4 weight part and initiator 1 ~ 3 weight part, reaction 6 ~ 9h, obtain water-solubility modifying Chlorinated Polypropylene III coated polymeric,
Wherein R=H or CH
3; N is the natural number between 4 ~ 14;
Described solvent is at least one in toluene, dimethylbenzene, butylacetate; The chloride mass percent of described Chlorinated Polypropylene III is 20 ~ 60%; Described alkyl acrylate is at least one in butyl acrylate, Isooctyl acrylate monomer, lauryl acrylate, tetradecyl acrylate; Described initiator is at least one in benzoyl peroxide, dilauroyl peroxide, di-t-butyl peroxide.
4. preparation method according to claim 2, it is characterized in that: described polyurethane prepolymer has such as formula structure (3) Suo Shi, its preparation method is: add polyether glycol 40 ~ 60 weight part and vulcabond 6 ~ 10 weight part in a reservoir, be warming up to 65 ~ 80 DEG C, add catalyzer 0.005 ~ 0.01 weight part stirring reaction 2h, add acetone 30 ~ 50 weight part and stopper 0.02 ~ 0.1 weight part, drip hydroxyethyl methylacrylate 1 ~ 3 part in 1h, continue stirring reaction 2h and obtain polyurethane prepolymer;
Wherein R
1for
m is the natural number between 17 ~ 34, and p is the natural number between 14 ~ 28; R
2for
Described polyether glycol to be molecular weight be 1000 polyoxypropyleneglycol, molecular weight be the polyoxypropyleneglycol of 2000, molecular weight be 1000 polytetrahydrofuran diol and molecular weight be at least one in the polytetrahydrofuran diol of 2000; Described vulcabond is toluene and at least one in isocyanic ester, isophorone diisocyanate; Described catalyzer is at least one in dibutyl tin laurate, stannous octoate; Described stopper is at least one in Resorcinol or toluhydroquinone.
5. preparation method according to claim 2, it is characterized in that: described step (3) is specifically according to following operation steps: add step (1) gained water-solubility modifying Chlorinated Polypropylene III prepolymer 50 ~ 60 weight part and step (2) gained polyurethane prepolymer 5 ~ 10 weight part in a reservoir, 70 ~ 90 DEG C of reaction 6h, obtain urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric after purifying.
6. a kind of urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric according to claim 1 is preparing the application in urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated material, it is characterized in that: described application is according to following operation steps: urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated polymeric 20 ~ 40 weight part is dissolved in solvent, be neutralized to neutrality, add water 60 ~ 100 weight part, dispersed with stirring, except desolventizing, obtain the poly-urethane photocuring modified water-soluble Chlorinated Polypropylene III BOPP coated material of solid content 17 ~ 40%.
7. application according to claim 6, is characterized in that: described solvent is at least one in toluene, dimethylbenzene, butylacetate.
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| CN111534215A (en) * | 2020-05-22 | 2020-08-14 | 中国科学院长春应用化学研究所 | Water-based paint for automobile bumpers and preparation method thereof |
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