(Meth)acrylic polymer, (meth)acrylic resin composition, (meth)acrylic resin sheet, (meth)acrylic resin laminated article and composite sheet
A methacrylate and acrylic technology, applied in the field of composite sheets, can solve the problems of high water absorption, shape change, etc., and achieve the effect of low water absorption
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[0266] Hereinafter, the present invention will be further described by way of examples. In addition, the abbreviation of the compound used in the Example and the comparative example is as follows. In addition, in the following, "part" means "part by mass".
[0267] "E / MA copolymer": ethylene-methyl acrylate copolymer (methyl acrylate unit content: 24% by mass)
[0268] "MMA": methyl methacrylate
[0269] "IBXMA": Isobornyl Methacrylate
[0270] "IBXA": Isobornyl Acrylate
[0271] "TBMA": tert-butyl methacrylate
[0272] "BA": n-butyl acrylate
[0273] "NPG": Neopentyl glycol dimethacrylate
[0274] "HPP": PERHEXYLPV (tert-hexyl peroxypivalate, purity 70% by mass)
[0275] "PBPV": PerbutylPV (tert-butyl peroxypivalate, purity 70% by mass)
[0276] "AOT": sodium dioctyl sulfosuccinate
[0277] "Urethane (meth)acrylate 1": 1 mole of polyisocyanate obtained by trimerizing hexamethylene diisocyanate with 3-acryloyloxy-2-hydroxypropyl (meth)acrylate 3 moles of urethane (me...
manufacture example 1
[0314] [Manufacturing Example 1] Preparation of Base Slurry 1
[0315] In the reactor equipped with a condenser, a thermometer, and a stirrer, as shown in Table 1, 0.038 parts of E / MA copolymer, 60 parts of MMA, 24 parts of IBXMA, 6.5 parts of IBXA, 8.2 parts of TBMA, and 1.1 parts of BA were supplied. And the mixture of 0.08 parts of NPG was bubbled with nitrogen gas while stirring, and then heating was started. When the liquid temperature became 60° C., 0.034 parts of HPP was added, the liquid temperature was further raised to 100° C., and this temperature was maintained for 13 minutes. Next, the liquid temperature was cooled to room temperature, and the base slurry 1 was obtained. The content of the polymer in the base slurry 1 was 20% by mass.
[0316] Table 1
[0317]
Embodiment 1
[0319] Two glass plates (300 mm in length, 300 mm in width, and 5 mm in thickness) were placed facing each other, and their edges were closed with soft polyvinyl chloride gaskets to prepare a mold for injection polymerization.
[0320] Add 28.7 parts of MMA, 3 parts of BA and 0.3 part of NPG to 68 parts of base slurry 1 to make a diluted slurry, further add 0.08 part of PBPV, 0.03 part of triphenylphosphine (compound (C)) and 0.08 part of AOT ( release agent (D)), thereby making polymeric raw materials.
[0321] The above-mentioned polymerizable raw material was poured into the above-mentioned mold, and the distance between the facing glass plates was adjusted to 1.6 mm. Next, the mold was heated in a water bath at 84° C. for 30 minutes, and further heated in an air furnace at 130° C. for 30 minutes to polymerize and solidify the polymerizable raw material in the mold to obtain a sheet-like polymer. Thereafter, the mold was cooled, and the sheet-like polymer was peeled off fr...
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