Tag: polymethyl methacrylate

5 Main reasons why Acrylic Plastic Is employed For Automotive Glazing

Posted on by Betty Brooks

Polycarbonate had earned the tag since the the most appropriate material for usage in the automotive industry. However, these days, Polymethyl Methacrylate, the PMMA polymer or commonly known acrylic plastic, has efficiently risen towards the growing demands from the automotive industry in replacing polycarbonate for the best important utilization in a, namely, automotive glazing.


Long established for usage in many different vehicle applications such as 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 popular features of acrylic plastic that make it well suited for the process of automotive glazing are discussed below.
Light weight
To produce a comparison over a very basic level, PMMA is half the body weight and more transparent than glass, thereby providing superior visibility during true of fluctuating and unstable temperatures. Due to its molecular structure, thermoformed pmma plastic are actually used almost only for car window glazing where every one of the necessary requirements for light-weight materials which can be safe, simple to process and perform in every weathers are met.
High on Scratch Resistance
Another significant desire for glazing is scratch resistance. Standard PMMA already has the highest surface hardness of thermoplastics even if uncoated. However, for automotive glazing, there are stringent conditions to get fulfilled to satisfy the optimal 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 works well. On the other hand, thermoplastics that have low resistance to weathering have to have 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 the interest of automobile manufacturers. Together with the advantages being immediately obvious, PMMA is now considered the proper fit for automotive glazing. Weight savings apart, the transparency of acrylic plastic in addition to its extremely high weathering resistance, pleasant acoustic properties, and exceptional form ability allow freedom enabling entirely new design possibilities.
Less anxiety birefringence
PMMA exhibits very little stress birefringence and also this serves as a major benefit over other thermoplastics such as polycarbonate, which has been primarily used for glazing previously. Weighed against traditional materials such as polycarbonate, moulded PMMA, offers a distinct chance of functional integration – reducing recess depth and assembly costs.
Environment-friendly
The new goal in the automotive marketplace is to produce clean low fuel consumption vehicles. Due to the awareness as well as the requirement for eco-friendly initiatives in today’s general scheme of things, PMMA serves as a perfect replacement for glass in the automotive glazing segment. As vehicle manufacturers push the boundaries of design, so too 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 sit in recent environmental requirements and are contemplating alternatives that reduce greenhouse gas and save fuel. Oahu is the perfect partner in this movement since it makes cars lighter.
Being a leading manufacturer of SUMIPEX® PMMA polymer, Sumitomo Chemical is happy to work with you to understand its properties and exactly how it most suitable to automotive glazing.
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5 Main reasons why Acrylic Plastic Can be used For Automotive Glazing

Posted on by Betty Brooks

Polycarbonate had earned the tag since the the most suitable material for usage from the automotive industry. However, in recent times, Polymethyl Methacrylate, the PMMA polymer or commonly known acrylic plastic, has efficiently risen towards the growing demands in the automotive industry in replacing polycarbonate which are more important utilization in the market, namely, automotive glazing.


Long established for usage in a variety of vehicle applications like decorative trim, ambient lighting and door entry strips, automotive glazing is one of those fields that provide the very best growth risk of PMMA.
Related key popular features of acrylic plastic making it well suited for the entire process of automotive glazing are discussed below.
Lightweight
To create a comparison on a simple level, PMMA is half the extra weight plus much more transparent than glass, thereby providing superior visibility even in true of fluctuating and unstable temperatures. As a result of its molecular structure, thermoformed methyl methacrylate resin are actually used almost just for car window glazing where all of the necessary requirements for light-weight materials which might be safe, simple to process and perform in most weathers are met.
On top of Scratch Resistance
Another important requirement for glazing is scratch resistance. Standard PMMA already has the highest surface hardness of thermoplastics even though uncoated. However, for automotive glazing, there are stringent conditions to become fulfilled to meet the perfect condition of scratch resistance. The effective use of a coating is thus mandatory. Considering that PMMA is intrinsically UV along with weathering-resistant, a single-step coating is successful. In contrast, thermoplastics that have low effectiveness against weathering need a two-step coating system. This results in relatively expense for coating.
New design possibilities
PMMA glazing is Forty to fifty percent lighter than conventional glass, which piques the eye of automobile manufacturers. Together with the advantages being immediately obvious, PMMA is seen as the right fit for automotive glazing. Weight savings apart, the transparency of acrylic plastic along with its quite high weathering resistance, pleasant acoustic properties, and exceptional form ability allow freedom enabling entirely new design possibilities.
Less stress birefringence
PMMA exhibits little or no stress birefringence and also this works as a major benefit over other thermoplastics like polycarbonate, that has been primarily useful for glazing in the past. In contrast to traditional materials like polycarbonate, moulded PMMA, comes with a distinct potential for functional integration – reducing recess depth and assembly costs.
Environment-friendly
The newest goal from the automotive marketplace is to formulate clean low fuel consumption vehicles. Given the awareness and the requirement for eco-friendly initiatives in the current scheme of things, PMMA works as a perfect option to glass from the automotive glazing segment. As vehicle manufacturers push the bounds of design, so too is automotive glazing evolving.
SUMIPEX® PMMA polymer offers characteristics that satisfy the latest challenges from the transportation sector. It’s a monumental challenge for car makers that are looking for to adjust to recent environmental requirements and therefore are contemplating alternatives that reduce greenhouse gas and save fuel. It does not take perfect partner within this movement as it tends to make cars lighter.
As being a leading manufacturer of SUMIPEX® PMMA polymer, Sumitomo Chemical is glad to help you in understanding its properties and exactly how it most suitable to automotive glazing.
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Journey via MMA to PMMA – Infographic

Posted on by Betty Brooks

Just how do a liquid containing just 5 carbon atoms, 2 oxygen atoms and 8 hydrogen atoms supply for durable purposes where thermal resistance, electrical resistance and mechanical strength is of prime importance? A better solution lies in a word – “Polymerisation”.
Through this infographic, we trace the journey of MMA (Methyl Methacrylate), a liquid monomer that’s polymerised to cause PMMA polymer (Polymethyl Methacrylate), as well as various grades.


MMA might be polymerised to PMMA through solution polymerisation, emulsion polymerisation and bulk polymerisation techniques. Every one of these reactions happen in the presence of a catalyst. The resulting acrylic glass might be modified to numerous shapes, sizes and forms depending on the additives.
The assorted grades of SUMIPEX®, the Polymethyl methacrylate resin made by Sumitomo Chemical, which might be obtained on adding additives are:
• ‘High Impact Grade of SUMIPEX® PMMA’ – Properties like high flow and good heat resistance make this ideal for 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 ideal chemical resistance would be the properties on this grade that favour its use in extruded sheets/ pipes/ rods.
• ‘Heat Resistant Grades of SUMIPEX® PMMA’ – Excellent heat resistance, excellent surface hardness and mechanical strength enables the usage of this grade in automotive parts including tail lamp, instrument cluster, optical Lens, general light fittings, etc.
• ‘Optical Grades of SUMIPEX® PMMA’ – With excellent heat resistance and flow properties, the optical grades with extremely low quantities of foreign contaminants are used for 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 recommended for intricate parts and thin-wall parts molding including watch and clock cover, lighting cover, name plate, house ware, etc.
• ‘General Purpose Grades of SUMIPEX® PMMA’ – General Purpose Grades determine among normal and optical grades/special grades. General Purpose Grades like MH, LG, LG2, etc. also come under “Extrusion Grade”, “Heat Resistance Grade” and “High Flow Grade”. With balanced properties including heat resistance and mechanical strength, this grade would work in making massive amount products including house ware, stationery, telephone buttons, piano keys, electrical accessories, ornaments, etc.
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