Baycoll ND 4028 Linear polyether polyol Bayer PU - Polyols >> Polyether ADHESIVE >> Reactive system BAYCOLL ND 4028 Linear polyether polyol. Baycoll ND 4028 polyether polyol is used in two-component reaction adhesives of high flexibility and as a general building block for polyurethanes. It is particularly useful in solvent-free systems and can be employed as a component for general-purpose adhesive applications to bond flexible (fabrics, foams) as well as rigid substrates (wood, plastic, metal). It is not suitable for bonding plasticized polyvinyl chloride (PVC). The flexibility can be decreased by blending with Baycoll NT 1380 polyether polyol. The low viscosity of Baycoll ND 4028 polyether polyol permits easy incorporation of filler and offers generally good compounding flexibility. This polyol has good hydrolytic stability, which is typical of polyethers. The secondary hydroxyl content of Baycoll ND 4028 polyether polyol makes it slower reacting than polyether polyols that contain primary hydroxyl groups, such as Baycoll ND 4030 polyether polyol. Baycoll ND 4028 polyether polyol is compatible with most Baycoll polyether polyols. However, compatibility with Baycoll polyesters and Desmocoll polyurethanes is limited and must be checked in each individual case. Linear polyether polyol. Used in two-component reaction adhesives of high flexibility for general-purpose adhesive applications to bond flexible (fabrics, foams) as well as rigid substrates (wood, plastic, metal). Offers low viscosity, easy incorporation of filler, good compounding flexibility and good hydrolytic stability. Possesses compatibility with most polyether polyols and slow reacting rate.