Thermoplastic resin composition and molded article thereof
A technology of thermoplastic resin and composition, which is applied in the field of thermoplastic resin composition, can solve the problems of insufficient performance such as repeated bending, and achieve the effects of excellent appearance, not easy to slide, and excellent formability
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[0149] In order to demonstrate this invention more concretely, an Example and a comparative example are given and demonstrated below. These examples do not limit the invention. Unless otherwise specified, "%" means mass %, and "part" means mass part.
[0150] The volume average particle diameter of the rubbery polymer (a1) and the graft ratio of the rubber-containing graft copolymer (A) were measured by the following (1) and (2), respectively.
[0151] (1) Volume average particle size
[0152] The volume average particle diameter in the emulsion of the rubbery polymer (a1) was measured at room temperature using "micro track UPA150" (trade name) manufactured by HONEYWELL. The unit is nm.
[0153] It turned out that there is substantially no difference between the emulsion particle diameter of the rubbery polymer (a1) and the rubber particle diameter of the rubbery polymer (a1) in the resin composition using the same, and the former matches the latter.
[0154] (2) Grafting ...
Synthetic example 1
[0160]
[0161] 120 parts of pure water, 0.5 part of glucose, 0.5 part of sodium pyrophosphate, 0.005 part of ferrous sulfate, and 60 parts of polybutadiene emulsion having a volume average particle diameter of 280 nm (in terms of solid content) were put into a nitrogen-substituted reactor, and The temperature in the reactor was raised to 65°C with stirring. The time when the internal temperature reached 65° C. was regarded as the start of polymerization, and 30 parts of styrene, 10 parts of acrylonitrile, and 0.25 part of a chain transfer agent t-dodecyl mercaptan mixture were continuously added over 5 hours. At the same time, an aqueous solution containing a polymerization initiator cumene hydroperoxide (0.2 parts) and potassium oleate was continuously added over a period of 7 hours to complete the reaction. To the obtained emulsion, 1 part of 2,2'-methylenebis(4-methyl-6-tert-butylphenol) was added to 100 parts of emulsion solids. Next, the emulsion was coagulated with s...
Synthetic example 2
[0163]
[0164] The feeding amount of the polybutadiene emulsion having a volume average particle diameter of 280 nm was 40 parts (in terms of solid content), the addition amount of styrene was changed to 45 parts, the addition amount of acrylonitrile was changed to 15 parts, and the chain transfer A rubber-containing graft copolymer ( A2).
[0165] The rubber-containing graft copolymer (A2) had a rubber content of 40% and a graft ratio of 95%.
[0166] [Thermoplastic Elastomer (B)]
[0167] As the thermoplastic elastomer (B1), a hydrogenated block copolymer "Dynaron DR8903P" (trade name) (Thermoplastic Elastomer (B1), which is a styrene-ethylene-butylene-styrene copolymer (SEBS) manufactured by JSR Corporation, was used. ), the styrene / butadiene mass ratio before hydrogenation was 35 / 65).
[0168] The MFR (230°C, 21.2N) of the thermoplastic elastomer (B1) was 10 g / 10min, and the MFR (200°C, 49.0N) was 4g / 10min.
[0169] [Other thermoplastic resin (C)]
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