Japanese amine catalyst supplier Tosoh Corp. is offering a catalyst, Toyocat RX24 designed to cut emissions of VOCs (volatile organic compounds) from polyurethane foams.
“Normally reactive amines give materials with lower durability, but RX24 gives better durability, with reduced VOCs,” said Yusuke Ihara, manager of the amine catalysts department for Tosoh.
Tosoh makes amine catalysts for all types of foam, rigid, foam and CASE (coatings, adhesive, sealant and elastomer) uses, Ihara said.
It has a focus on using ethylene amines, as Tosoh is one of the major manufacturers of these, along with other suppliers such as Huntsman, Dow and BASF.
Ihara and his colleague Hiroyuki Kiso, technical manager for the urethane and amine group, at Tosoh’s Nanyo research laboratory, pointed out that making reactive amines is one way they can give low VOCs, and these catalysts have been in the market for many years.
Tosoh makes a wide range of these, such as RX 70 for ester foams and FX 4/20/24 for ether foams. A recent development is CX20, for high resilience moulded foam, “giving excellent cure,” and a…