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Teijin stops R&D on aramid copolymers containing DAPBI
26
Sep '15
Teijin Aramid is stopping its research program to develop and commercialise aramid copolymers containing DAPBI.

“The developed prototype materials had good anti-ballistic performance but usage of this substance could be dangerous to people involved in the production of the monomer and copolymer,” a press release stated.

In recent years, Teijin Aramid has been engaged in an R&D program together with several global partners to develop and commercialise aramid copolymers containing DAPBI.

According to Teijin, the program was aimed at further improvement of the performance of aramid polymers, mainly for anti-ballistic applications.

“After a thorough investigation it was found that the DAPBI monomer is mutagenic, severely toxic to the kidneys at very low dosages, toxic to reproduction and possibly carcinogenic,” it explained.

Teijin Aramid's current polymer for Twaron contains two monomers (building blocks) called PPD and TDC.

The company added that in copolymer yarn, part of the PPD is replaced by a different building block called DAPBI, to achieve a further reduction in weight of personal body armour at the same threat level.

“Teijin Aramid gives highest priority to the safety of persons involved in the whole supply chain and so, it decided to stop the development and commercialisation of these DAPBI-containing copolymer yarns,” it informed.

Teijin Aramid said it will continue to develop next generations of anti-ballistic products with improved performance like Twaron Ultra Micro, an ultra-microfilament fibre which was launched in January 2013. (AR)

Fibre2Fashion News Desk – India

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