Horgen, Switzerland – Dow Polyurethanes has launched a range of four low-emission styrene-acrylonitrile-containing polyether polyols for flexible foam applications.
Dow said: ‘Typically CPP polymers can contain residual monomers. In the new HL 500 series these are controlled to very low levels that can enable compliance with eco labels and automotive standards.’
The company said that the HL 500 series polyols are designed to enable foamers to produce materials which conform to VDA 278, Oeko-Tex and LGA standards.
Dow added that its Voralux HL515 material has a hydroxyl number between 39.5 and 45, and dynamic viscosity of between 700-1000 mPa.s at 25°C.
The HL 525 material has 25% solids and has been developed for slabstock applications. Its hydroxyl number is between 36 and 41.5, and the dynamic viscosity is 1150-1550 mPa.s.
The third material, HL500, is a higher solids material for slabstock, with a hydroxyl number of 26.5 to 30.5, and dynamic viscosity between 3000 and 6000 at 25°C.
Voralux HL 510 is designed with a hydroxyl number of between 42 and 46 mg/KOH, and viscosity between 700 and 900 mPa.s
The existing products with similar specifications will remain in the portfolio, Dow said, adding that they are ‘still very relevant for specific applications’.
The company confirmed that the HL materials will be rolled out to different geographies through the remainder of the year.