We produce highly transparent materials on different polymeric families. In addition to the more popular PC and PMMA, there are innovative materials based on polyamide, new styrene terpolymers and elastomers.
Polycarbonate’s a unique combinations of properties. It is extremely robust, lightweight with glass-like transparency and is impact resistant – even at extremely low temperatures. It has a high dimensional stability and is easily molded, yet has excellent heat resistance with a glass transition temperature of up to 148ºC.
An approach to increase temperature resistance is to copolymerise bis-phenol A with the bis-phenol of trimethylcyclohexanone (bis-phenol TMC). The TMC polycarbonate homopolymer has a glass transition temperature of 238°C, nearly 100°C above that of the bis-phenol A polycarbonate. Therefore, copolymers will have intermediate glass transitions depending on the relative proportions of TMC and bis-phenol A.
Acrylonitrile/butadiene/styrene/methyl methacrylate copolymer (M-ABS) consists of a matrix polymer containing most part by weight of acrylonitrile and styrene and a small part by weight of methyl methacrylate, combined with a grafted rubber consisting of butadiene/styrene/elastomer . The M-ABS resin becomes transparent by making equal the refractive index of the matrix and that of rubber particles.
CLIAR ASA is a blend of SAN and acrylic rubber, perfectly transparent like a PMMA but 5 times higher impact resistant. In addition to its excellent weather resistance, it has similar properties to ABS, and is easily processable, both in extrusion and in molding.
Special range family based on acrylostyrol terpolymers, that combines excellent transparency with unprecedented process simplicity.
The main feature is that all grades can be processed without drying. This feature allows reduced costs and wastes.
PMMA is a tough and rigid plastic. In addition, it has almost perfect transmission of visible light, and, because it retains these properties over years of exposure to ultraviolet radiation and weather, it is an ideal substitute for glass. Because PMMA displays the unusual property of keeping a beam of light reflected within its surfaces, it is frequently made into optical fibres for telecommunication or endoscopy. PMMA is often used as a substitute for glass in products such as shatterproof windows, skylights, illuminated signs, because is very transparent (92-94% of transmittance) more than glass ( 80-90%).
The impact PMMA series offer the best combination of impact, chemical and heat resistance and provide rigidity and surface hardness. The grades in this series can be processed by injection moulding or extrusion. Comonomers such as butyl acrylate are often added to improve impact strength, while comonomers such as methacrylic acid can be added to increase the glass transition temperature of the polymer for higher temperature use such as in lighting applications. Suitable for lighting, packaging and many other applications, toughened grades are available from medium to very high impact resistance, and still offer excellent optical performance, weatherability and colour possibilities characteristic of acrylic.
KITAN D TR
KITAN D TR comes from the polycondensation of a cycloaliphatic diamine with ADA (dodecanedioic acid ), giving a special transparent PA 12 (PA12 MACM). By selecting specific monomers the crystallites are so small that they do not scatter visible light, and the material appears transparent to the human eye—a property known as microcrystallinity.
KITAN P TR
KITAN P TR combine permanent transparency with good sunlight and heat resistance, high mechanical toughness, and excellent resistance to chemicals, aggressive lubricants, and cleaning agents including many cosmetics. .
Thermoplastic polyurethanes are generally moderately to strongly opaque, or even milky and cloudy also if some grades are still translucent up to a wall thickness of approximately 2 mm. Transparent, non-yellowing polyurethanes are attractive for use in a variety of applications, so it is also possible to supply expensive aliphatic TPU with a particularly high transparency and still offer outstanding transparency in a wall thickness of 10 mm as well as having all the advantages of aliphatic TPU.
Styrene-acrylonitrile copolymer (SAN) is a rigid, hard transparent plastic produced by the copolymerization of styrene and acrylonitrile. SAN combines the clarity and rigidity of polystyrene with the hardness, strength, and heat and solvent resistance of polyacrylonitrile. The transmittance in the visible range is greater than 90% therefore it is easily coloured, with high dimensional stability and colour brilliance. It is resistant to thermal shock , stress cracking, crazing and has a good chemical resistance, also to food stains.