BX UV PUR 70 is a new liquid heat stabilizer blend for polyether and polyester-based flexible foams. It is a BHT and amine-free blend. As an equivalent of BASF irgastab PUR 70. 


irgastab PUR 70 is particularly suitable for stabilizing polyols used in the manufacture of PUR flexible foams. Since PUR 70 has a negligible impact on emissions, it can be used in flexible foams across a wide range of densities in automotive applications. Due to its excellent resistance to gas fading and extremely low photochromic properties, PUR 70 can be used in applications where foam whiteness is critical.
irgastab PUR 70 can also be used in combination with other antioxidants, co-stabilizers (e.g. phosphites) and/or light stabilizers (e.g. hindered amine light stabilizers (HALS), UVA).
PUR70 has good anti-scorch, anti-fog and anti-textile staining properties.
PUR70 is an amine-free, aromatic solvent-free heat stabilizer that provides extremely low VOC and FOG contributions and reduces aldehyde emissions from polyols and PU foams, meeting the latest automotive emission requirements (e.g. VDA27810111). In addition, it provides excellent foam resistance to discoloration after gas and/or light exposure.
PUR70 is a pourable liquid that enables dust-free handling, automatic dosing, and reduced mixing times. It increases productivity by reducing weighing and metering into one operation.
In bulk polyol applications, PUR70 can be used in concentrations ranging from 0.4% to 0.45%, depending on the degree of stabilization required. In mold polyol grades, the recommended content of irgastab PUR 70 is 0.05% to 01%. Additional performance data for polyols available upon request



appearance Transparent yellow liquid
Boiling point >200C
Viscosity (40C) 350-500mm2/s
Relative density (20℃)0.95-1.10
Vapor pressure (20°C)<0.1 m bar
water-soluble partially dissolved

Handling and Safety: 

For additional handling and toxicological information, please consult us for Maternal Safety Date Sheet.


25kg/plastic bag, 300/500kg per panel