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Active energy ray-curable composition
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A technology of active energy ray and curable composition, applied in the field of polymer composition, to achieve the effects of excellent flexibility, low viscosity and excellent coatability after curing
Inactive Publication Date: 2017-04-19
KURARAY CO LTD
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Abstract
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Generally, various plasticizers are added to impart flexibility, but the same problems as above may occur
Method used
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[0186] Hereinafter, although an Example and a comparative example demonstrate this invention more concretely, this invention is not limited to the said Example.
[0187] In the following synthesis examples, raw materials were dried and purified by conventional methods and degassed with nitrogen, and transport and supply were performed under a nitrogen atmosphere.
[0188] [Single consumption rate]
[0189] The consumption rate of each monomer after polymerization was calculated by the following method. That is, 0.5 ml of the polymerization reaction solution taken from the polymerization system was added to 0.5 ml of methanol to prepare 1.0 ml of the mixed solution, and 0.1 ml of the obtained mixed solution was dissolved in 0.5 ml of deuterated chloroform to carry out 1 In H-NMR measurement, the peak (chemical shift value 6.08 to 6.10) derived from the proton directly linked to the carbon-carbon double bond of the (meth)acrylate used as a monomer and the peak derived from the ...
Synthetic example 1
[0215] (Process (1))
[0216] After adding 1.5 L of toluene to a 3 L flask whose interior was dried and replaced with nitrogen, 1,1,4,7,10,10-hexamethanol, which is a Lewis base, was added sequentially while stirring the solution in the flask. Triethylenetetramine 7.4ml (27.3mmol), 0.450mol / L toluene solution 63.6ml of isobutylbis(2,6-di-tert-butyl-4-methylphenoxy)aluminum as organoaluminum compound (28.6 mmol), cooled to -20°C. 20 ml (26.0 mmol) of a 1.30 mol / L cyclohexane solution of sec-butyl lithium as an organolithium compound was added thereto, and 2-(trimethylsilyloxy)ethyl methacrylate was added as a monomer at one time. Anionic polymerization was initiated with 33.6 ml of a mixture of 17 ml (78 mmol) of ester and 16.6 ml (156 mmol) of methyl methacrylate. 80 minutes after the completion of the addition of the monomers, the polymerization reaction liquid changed from the initial yellow color to colorless. Furthermore, after stirring for 20 minutes, the reaction liqu...
Synthetic example 2
[0230] (Process (1))
[0231] After adding 1.5 L of toluene to a 3 L flask whose interior was dried and replaced with nitrogen, 1,1,4,7,10,10-hexamethanol, which is a Lewis base, was added sequentially while stirring the solution in the flask. Triethylenetetramine 7.4ml (27.3mmol), 0.450mol / L toluene solution 63.6ml of isobutylbis(2,6-di-tert-butyl-4-methylphenoxy)aluminum as organoaluminum compound (28.6 mmol), cooled to -20°C. 20ml (26.0mmol) of a 1.30mol / L cyclohexane solution of sec-butyllithium as an organolithium compound was added thereto, and 1,1-dimethylpropane-1,3-diol diol as a monomer was added at one time. Anionic polymerization was initiated with 35.3 ml of a mixture of 18.7 ml (78 mmol) of methacrylate and 16.6 ml (156 mmol) of methyl methacrylate. After 80 minutes from the end of the addition of the mixture, the polymerization reaction liquid changed from the initial yellow color to colorless. Furthermore, after stirring for 20 minutes, the reaction liquid w...
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Abstract
Provided is an active energy ray-curable composition which exhibits good curability by means of an active energy ray, and which has low viscosity, thereby exhibiting excellent coatability in cases where the composition is used as an adhesive, a coating material or the like which is applied to a base and then cured by an active energy ray. In addition, a cured product of this active energy ray-curable composition has excellent flexibility. An active energy ray-curable composition which contains a (meth)acrylic triblock copolymer (A) containing a (meth)acrylic polymer block (aA) having an active energy ray-curable group containing a partial structure represented by general formula (1) and a (meth)acrylic polymer block (bA) having no active energy ray-curable group and a (meth)acrylic diblock copolymer (B) containing a (meth)acrylic polymer block (aB) having an active energy ray-curable group containing a partial structure represented by general formula (1) and a (meth)acrylic polymer block (bB) having no active energy ray-curable group. The ratio of the number average molecular weight Mn(bB) of the (meth)acrylic polymer block (bB) contained in the (meth)acrylic diblock copolymer (B) to the number average molecular weight Mn(bA) of the (meth)acrylic polymer block (bA) contained in the (meth)acrylic triblock copolymer (A), namely Mn(bB) / Mn(bA) is within the range of 0.2-2.0. (In the formula, R1 represents a hydrogen atom or a hydrocarbon group having 1-20 carbon atoms.)
Description
technical field [0001] The present invention relates to a polymer composition having active energy ray curability. Specifically, the present invention relates to an active energy ray-curable composition that has a high curing rate by irradiation with active energy rays, does not deform, and has excellent transparency and flexibility of a cured product obtained. Background technique [0002] Active energy ray-curable compositions cured by irradiating active energy rays such as ultraviolet rays and electron beams are known, and are used in applications such as adhesives, adhesives, paints, inks, coating materials, and optical shaping materials. [0003] On the other hand, a (meth)acrylic block copolymer composed of a methacrylic polymer block and an acrylic polymer block is excellent in adhesiveness, moldability, weather resistance, etc. Expanded to applications such as adhesives, adhesives, coating materials, and various molding materials. [0004] Furthermore, as a materia...
Claims
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