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Polycarbonate had earned the tag because the most suitable material to use in the automotive industry. However, in recent years, Polymethyl Methacrylate, the PMMA polymer or commonly known acrylic plastic, has efficiently risen to the growing demands from the automotive industry in replacing polycarbonate for the most important use in a, namely, automotive glazing.

Long established to use in several vehicle applications for example decorative trim, ambient lighting and door entry strips, automotive glazing is just one of those fields that offer the very best growth potential for PMMA.
Related key options that come with acrylic plastic that make it suitable for the process of automotive glazing are discussed below.
Lightweight
To create a comparison on the very basic level, PMMA is half the load plus much more transparent than glass, thereby providing superior visibility even just in the truth of fluctuating and unstable temperatures. Because of its molecular structure, thermoformed polymethyl methacrylate have become used almost just for car window glazing where all the necessary requirements for light-weight materials which are safe, an easy task to process and perform in every weathers are met.
On top of Scratch Resistance
Another essential dependence on glazing is scratch resistance. Standard PMMA already has got the highest surface hardness of most thermoplastics even when uncoated. However, for automotive glazing, you can find stringent conditions to get fulfilled in order to meet the ideal condition of scratch resistance. The usage of a coating is therefore mandatory. Since PMMA is intrinsically UV as well as weathering-resistant, a single-step coating works well. As opposed, thermoplastics which may have low potential to deal with weathering require a two-step coating system. This results in relatively high costs for coating.
New design possibilities
PMMA glazing is 40 to 50 percent lighter than conventional glass, which piques a person’s eye of automobile manufacturers. With all the advantages being immediately obvious, PMMA is now considered the right fit for automotive glazing. Weight savings apart, the transparency of acrylic plastic with its very high weathering resistance, pleasant acoustic properties, and exceptional form ability allow freedom enabling entirely new design possibilities.
Less negative feelings birefringence
PMMA exhibits hardly any stress birefringence and also this operates as a major benefit over other thermoplastics for example polycarbonate, which was primarily used by glazing previously. Compared with traditional materials for example polycarbonate, moulded PMMA, comes with a distinct chance of functional integration – reducing recess depth and assembly costs.
Environment-friendly
The brand new goal in the automotive market is to formulate clean low fuel consumption vehicles. Given the awareness along with the dependence on eco-friendly initiatives in the present scheme of things, PMMA operates as a perfect option to glass in the automotive glazing segment. As vehicle manufacturers push the boundaries of design, also is automotive glazing evolving.
SUMIPEX® PMMA polymer offers characteristics that satisfy the latest challenges in the transportation sector. It’s a monumental challenge for car makers that are looking to adjust to recent environmental requirements and so are considering alternatives that reduce greenhouse gas and save fuel. It does not take perfect partner on this movement since it helps make cars lighter.
Being a leading manufacturer of SUMIPEX® PMMA polymer, Sumitomo Chemical is happy to work with you in understanding its properties and how it ideal to automotive glazing.
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Polycarbonate had earned the tag because the the best option material to be used inside the automotive industry. However, in recent times, Polymethyl Methacrylate, the PMMA polymer or commonly known acrylic plastic, has efficiently risen on the growing demands with the automotive industry in replacing polycarbonate which are more important use within the, namely, automotive glazing.

Long established to be used in a number of vehicle applications including decorative trim, ambient lighting and door entry strips, automotive glazing is just one of those fields that supply the greatest growth prospect of PMMA.
Related key features of acrylic plastic making it perfect for the operation of automotive glazing are discussed below.
Lightweight
To generate a comparison with a erogenous level, PMMA is half the extra weight plus much more transparent than glass, thereby providing really clear visibility during true of fluctuating and unstable temperatures. Due to its molecular structure, thermoformed polymethyl methacrylate are used almost only for car window glazing where all of the necessary requirements for light-weight materials which can be safe, an easy task to process and perform in every weathers are met.
At the top of Scratch Resistance
Another significant requirement of glazing is scratch resistance. Standard PMMA already contains the highest surface hardness of thermoplastics even though uncoated. However, for automotive glazing, there are stringent conditions to get fulfilled in order to meet the perfect state of scratch resistance. The effective use of a coating is thus mandatory. Given that PMMA is intrinsically UV in addition to weathering-resistant, a single-step coating is successful. As opposed, thermoplastics which may have low potential to deal with weathering demand a two-step coating system. This results in relatively high costs for coating.
New design possibilities
PMMA glazing is Forty to fifty percent lighter than conventional glass, which piques a person’s eye of automobile manufacturers. Using the advantages being immediately obvious, PMMA is known as the correct fit for automotive glazing. Weight savings apart, the transparency of acrylic plastic with its quite high weathering resistance, pleasant acoustic properties, and exceptional form ability allow freedom enabling entirely new design possibilities.
Less anxiety birefringence
PMMA exhibits little or no stress birefringence this also functions as a major benefit over other thermoplastics including polycarbonate, which has been primarily used for glazing previously. In comparison with traditional materials including polycarbonate, moulded PMMA, provides a distinct possibility of functional integration – reducing recess depth and assembly costs.
Environment-friendly
The modern goal inside the automotive companies are to formulate clean low fuel consumption vehicles. Given the awareness and the requirement for eco-friendly initiatives in today’s scheme of things, PMMA functions as a perfect alternative to glass inside the automotive glazing segment. As vehicle manufacturers push the boundaries of design, so too is automotive glazing evolving.
SUMIPEX® PMMA polymer offers characteristics that fulfill the latest challenges inside the transportation sector. It’s a monumental challenge for car makers that want to adjust to recent environmental requirements and so are thinking of alternatives that reduce greenhouse gas and save fuel. Oahu is the perfect partner within this movement as it helps make cars lighter.
Like a leading manufacturer of SUMIPEX® PMMA polymer, Sumitomo Chemical is satisfied to assist you in understanding its properties and just how it suitable to automotive glazing.
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How do a liquid which includes just 5 carbon atoms, 2 oxygen atoms and 8 hydrogen atoms be used for robust purposes where thermal resistance, electrical resistance and mechanical strength is of prime importance? A better solution depends on a word – “Polymerisation”.
Through this infographic, we trace your journey of MMA (Methyl Methacrylate), a liquid monomer which can be polymerised to lead to PMMA polymer (Polymethyl Methacrylate), and its particular various grades.

MMA could be polymerised to PMMA through solution polymerisation, emulsion polymerisation and bulk polymerisation techniques. All these reactions take place in the use of a catalyst. The resulting acrylic glass could be modified to numerous shapes, sizes and forms depending on the additives.
The different grades of SUMIPEX®, the Polymethyl methacrylate resin made by Sumitomo Chemical, which can be obtained on adding additives are:
• ‘High Impact Grade of SUMIPEX® PMMA’ – Properties like high flow and good heat resistance get this to suited to manufacturing extruded sheets/ pipes/ rods, construction materials, automotive parts and industrial applications
• ‘Extrusion Grade of SUMIPEX® PMMA’ – Good extrusion molding characteristics, high surface hardness, superb weatherability and excellent chemical resistance will be the properties of the grade that favour its used in extruded sheets/ pipes/ rods.
• ‘Heat Resistant Grades of SUMIPEX® PMMA’ – Excellent heat resistance, excellent surface hardness and mechanical strength enables using this grade in automotive parts for example tail lamp, instrument cluster, optical Lens, general lighting fixtures, etc.
• ‘Optical Grades of SUMIPEX® PMMA’ – With excellent heat resistance and flow properties, the optical grades with extremely low quantities of foreign contaminants bring light Guide panels and optical lenses.
• ‘High Flow Grade of SUMIPEX® PMMA’- With characteristics like high-flow during injection molding and good moldability, this grade is usually recommended for intricate parts and thin-wall parts molding for example watch and clock cover, lighting cover, name plate, house ware, etc.
• ‘General Purpose Grades of SUMIPEX® PMMA’ – General Purpose Grades determine distinction between normal and optical grades/special grades. General Purpose Grades like MH, LG, LG2, etc. will comw with under “Extrusion Grade”, “Heat Resistance Grade” and “High Flow Grade”. With balanced properties for example heat resistance and mechanical strength, this grade is suitable to create massive amount products for example house ware, stationery, telephone buttons, piano keys, electrical accessories, ornaments, etc.
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