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Acrylic resin composition and acrylic resin molded body

A technology of acrylic resin and composition, applied in the field of acrylic resin composition and acrylic resin molded body, can solve the problems of decreased mechanical strength, low mechanical strength, easy occurrence of fracture, crack, etc., and achieves excellent processability, excellent design, Effect of low melt viscosity

Active Publication Date: 2016-01-20
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, a resin composition containing a polymer that only lowers the molecular weight of a branched polymer has low mechanical strength, and especially when molded into a film, it may break during molding.
In addition, the film of the resin molded product is directly laminated on the surface of various three-dimensional shaped resin molded products, woodwork products, or metal molded products, or the film of the resin molded product is laminated on a flat resin sheet, and then laminated on the surface of the resin molded product. When the surface of various resin molded products with three-dimensional shapes, woodwork products or metal molded products, not only breaks and cracks are prone to occur, but also whitening may occur, impairing the design
[0008] In addition, even if the flexural strength of an acrylic resin molded article produced by mixing a branched polymer and a linear polymer is the same as or higher than that of an acrylic resin molded article produced only from a branched polymer, the When the acrylic resin molded product is a film, not limited to this, the mechanical strength is lowered, and the film may be broken during molding.
In addition, when the acrylic resin film is directly laminated on the surface of various three-dimensional shaped resin molded products, woodwork products, or metal molded products, or laminated on the surface of various planar resin sheets, it is laminated on the surface of various three-dimensional shaped resin molded products. When the surface of products, woodwork products or metal molded products is used, not only fractures and cracks may occur, but also whitening may occur to impair the appearance

Method used

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  • Acrylic resin composition and acrylic resin molded body
  • Acrylic resin composition and acrylic resin molded body
  • Acrylic resin composition and acrylic resin molded body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] After adding 8.5 parts of deionized water to a container equipped with a mixer, add 0.3 parts of MMA, 4.5 parts of n-BA, 0.2 parts of 1,3-BD, 0.05 parts of AMA and 0.025 parts of CHP as monomer components , and stirred to mix at room temperature. Next, 1.1 parts of RS-610NA was put into the said container, stirring, and stirring was continued for 20 minutes, and the emulsion was prepared.

[0093] Next, 186.5 parts of deionized water was poured into a polymerization vessel with a cooler, and the temperature was raised to 70°C. Furthermore, a mixture prepared by adding 0.20 parts of sodium formaldehyde sulfoxylate, 0.0001 parts of ferrous sulfate, and 0.0003 parts of EDTA to 5 parts of deionized water was put into the polymerization vessel at one time. Next, the prepared emulsion was dropped into the polymerization container over 8 minutes while stirring under nitrogen, and the reaction was continued for 15 minutes to complete the polymerization of the first elastic pol...

Embodiment 2

[0113] The composition of the second elastic polymer (A2) is 2.1 parts of MMA, 31.5 parts of n-BA, 1.4 parts of 1,3-BD, 0.35 parts of AMA, 0.022 parts of CHP, and the component (B) is 46.0 MMA, 4.0 parts of n-BA, 0.40 parts of n-OM, and 0.06 parts of t-BH were carried out in the same manner as in Example 1 to prepare a film and measure its properties. The results are shown in Table 2.

[0114] The individual Tgs calculated from the first elastic polymer (A1), second elastic polymer (A2), intermediate polymer (C), and (B) components are the same as in Example 1. The average particle diameter of the latex acrylic resin composition was 0.12 μm.

Embodiment 3

[0116] The composition of the second elastic polymer (A2) is 1.5 parts of MMA, 22.5 parts of n-BA, 1.0 parts of 1,3-BD, 0.25 parts of AMA, 0.016 parts of CHP, and the component (B) is 55.2 MMA, 4.8 parts of n-BA, 0.30 parts of n-OM, and 0.08 parts of t-BH were carried out in the same manner as in Example 1 to prepare a film and measure its properties. The results are shown in Table 2.

[0117] The individual Tgs calculated from the first elastic polymer (A1), second elastic polymer (A2), intermediate polymer (C), and (B) components are the same as in Example 1. The average particle diameter of the latex acrylic resin composition was 0.12 μm.

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Abstract

The present invention provides an acrylic resin composition and its molded body. The acrylic resin composition has high fluidity, low melt viscosity, does not stay in a molding machine, can be continuously molded at high speed for a long time, and can obtain a A molded product that has original properties such as mechanical strength and suppresses the occurrence of whitening. The acrylic resin composition of the present invention is an acrylic resin composition obtained by polymerizing a monomer containing an alkyl methacrylate having an alkyl group having 1 to 4 carbon atoms in the presence of an elastic polymer. Satisfying the light transmittance after a specific fluidity and tensile strength test, the elastic polymer is made from an alkyl acrylate having an alkyl group with 1 to 8 carbon atoms and an alkyl acrylate with a carbon number of 1 to 4 It is obtained by polymerizing any one or two or more selected from the alkyl methacrylate of the alkyl group with a graft crossing agent.

Description

technical field [0001] The present invention relates to an acrylic resin composition excellent in moldability, capable of forming a molded product with suppressed whitening and high mechanical strength, and a molded product thereof. Background technique [0002] Conventionally, thermoplastic resins have been produced by, for example, producing polymers containing polybutadiene, styrene-butadiene copolymers, styrene-butadiene-acrylonitrile copolymers, acrylic rubber containing acrylates, etc., by emulsion polymerization, etc. The latex obtained is subjected to salting-out, acid-out coagulation, spray-drying, or freeze-drying, etc., to separate or recycle the powdery polymer. The powdery thermoplastic resin is melted in a single-screw extruder, twin-screw extruder, etc. after adding a compounding agent, extruded into a strand, and the strand is cut by a cold cutting method, a hot cutting method, etc. to form particles. Then, the pellets are molded into a desired shape to pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F265/06C08F220/10
CPCC08F265/06C08F285/00C08J5/18C08J2333/06C08F220/18C08F220/10C08J5/00C08L33/04C08L2201/10C08L2203/16
Inventor 山口优子阿部纯一末村贤二
Owner MITSUBISHI CHEM CORP
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