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Global automobile production is expected to increase at an annual rate of 3%. Against this backdrop, consumer needs are becoming increasingly sophisticated with the market calling for lighter and safer vehicles that offer more innovative designs and greater comfort. The Mitsui Chemicals Group is drawing on its broad lineup of materials, superior technological capabilities, and outstanding product quality to deliver solutions that meet the diverse needs of customers at the earliest possible opportunity.

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Mobility Product Lineup

Although plastic accounts for around 10% (or approximately 100kg) of an automobile’s total weight, it comprises 70% of the 30,000 parts that comprise an automobile. The Mitsui Chemicals Group is able to meet a wide array of social needs through highly functional polymeric materials and performance compounds, fields in which the Group excels.

World-Leading Product Lineups

  • Global No.2, Asia No.1 Bumpers

    PP compounds PRIME POLYPROTM
    • Lightweight
    • Impact resistant
    • Designing
  • Global No.3, Asia No.2 Interior surfaces

    Olefin thermoplastic elastomers MILASTOMERTM
    • Recyclable
    • Designing
    • Low density, lightweight
  • Asia No.1 Door sealing

    Ethylene propylene rubber Mitsui EPTTM
    • Easy to process
    • Weather and heat resistant
  • Global No.1 Fuel tanks

    Adhesive polyolefin ADMERTM
    • Moldable of multiple layers
    • Lightweight due to resin fuel tanks
  • Tie-up with The Lubrizol Corporation, the leader in the lubricant oil industry

    Liquid Polyolefinic Oligomer LUCANTTM
    • Improved fuel efficiency
    • Extended service life

New Product Development

  • In-vehicle camera lenses

    • Lightweight
    • Compact
    • Safe and reliable

    Developing application based on materials for smartphones.
    Working to improve heat resistance; developing automotive applications.

  • Lithium ion battery safety material

    • Durable
    • Safe and reliable
    • Lightweight

    Exclusive license with Industrial Technology Research Institute of Taiwan.
    Working to improve performance; developing automotive applications.

  • Metal/resin integral molding parts

    • Lightweight
    • Reduced production processes

    Integral injection molding eliminates processes using screws or welding.
    Provides the same strength as metal parts at half the weight by combining nylon resin with aluminum.

  • Parts around engine

    • Heat resistance
    • Improved fuel efficiency

    Inserted into water jacket.

  • Exterior materials

    Glass fiber reinforced plastics materials
    Carbon fiber reinforced plastics materials, etc
    • Lightweight
    • Improved fuel efficiency

    Use for rear-door, hood interior panels.

Aiming to Become the World Leader in PP Compounds

With a share of around 60%, the Mitsui Chemicals Group’s automotive material PP compound business is the market leader in sales to Japanese automobile manufacturers while ranking second globally. The Group has also built up a solid track record in North America and holds around 30% share in the U.S. automobile manufacturing sector.
PP compounds combine polypropylene with other polymers and additional agents to achieve functionality and performance that polypropylene alone is unable to provide. Leveraging its proven expertise in material design technologies in combination with proprietary resins, the Mitsui Chemicals Group is providing highly acclaimed high-quality PP compounds that address various customer needs.
Moreover, the Group is building a structure that is finely attuned to the global strategies of automobile manufacturers. In a bid to address customer needs in a timely manner, the Group currently maintains production and R&D bases in eight and five regions, respectively, worldwide.
The Mitsui Chemicals Group is progressively increasing production capacity in line with growing demand and its efforts to increase its market share. Moving forward, every effort will be made to identify markets that exhibit continued growth and to further reinforce Group operations.

The Group’s Market Share and Automobile Market Growth Rate

Metal-Resin Integration Technology POLYMETAC

Developed by the Mitsui Chemicals Group, POLYMETACTM is a metal-resin integration technology that can strongly adhere and bond various metals to resins—an achievement that was not possible using conventional methods. By substantially reducing the number of parts, including bolts and other fasteners, POLYMETACTM is not only a source of lightweight solutions but also a means to minimize the number of steps required in the manufacturing process.
In 2015, Aerosense Inc. took the long-awaited step of adopting hybrid products made from carbon fiber reinforced plastic (CFRP) bonded to aluminum parts using POLYMETACTM technology in the frames of its new autonomous unmanned aerial vehicles. The Group provided total support in shaping and designing the parts, which greatly enhance the structural rigidity of aerial vehicles while significantly reducing weight and enabling simpler designs. In this manner, the Mitsui Chemicals Group has also helped to extend flight distances.
The Group is currently working with component manufacturers to jointly develop automotive parts using POLYMETACTM with the aim of having these parts used in new car models by around 2020.