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07-22-2013

Luranyl

Approved for Drinking Water

PPE and PS grades for drinking water have high thermal and good dimensional stability, are permanently resistant to hot water and have little water absorbency (figure: Romira)

Romira GmbH, Pinneberg, Germany, is expanding its product range of polyphenylene ether (PPE) and polystyrene (PS) blends with a Luranyl grade aimed mainly at drinking water. The materials have high thermal and good dimensional stability, are permanently resistant to hot water and have low water absorbency. In contact with cold and hot water, e.g., water meters, water pumps and the control unit of the faucet, they are visible everywhere.

Last year, the “TW” grades based on PPE/PS/I were developed not only to meet stringent requirements on migration values, but also to improve on other mechanical properties possessed by predecessor grades. For example, improvements were made in respect of tensile strength, flexural strength, and especially the weld line strength, based on a comparison between Luranyl KR 2403 G4 (PPE/PS-I with 20 % glass fiber) and G6 (PPE/PS-I with 30 % glass fiber) on one hand and Luranyl KR 2403 G4 TW and TW G6 on the other.

Materials in this sector must meet stringent tests, especially for hot-water applications at temperatures up to 85°C. Requirements on migration rates in this area have recently been tightened up. Parts may not undergo deformation nor should there be a dramatic reduction in their mechanical properties.

Company profile

Romira GmbH

Siemensstr. 1-9
DE 25421 Pinneberg
Tel.: 04101 706-03
Fax: 04101 706-300

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