Manufacturers are providing polyester polyols that can primarily be used in a “2k system” coupled with isocyanates like MDI and/or TDI to make polyurethane which surges the demand for bio polyol and ...

The increased amount of isocyanate and tin catalyst also increases the hardness of the foam by increasing both the urea phase content and the phase connections between the polyol domain and the urea ...

Following that, the incorporation of these monomers can also influence some of the polyol’s properties such as reactivity, solubility, viscosity, and compatibility with isocyanate. For instance, the ...

PIRs are widely applied in PU elastomers in order to improve their thermal stability and flame-retardant properties. (6,7) These elastomers are generally obtained via one of the two most common ...

Abstract: Based on numerical analysis, we determine the ideal mix ratio of polyol-isocyanate content that influence the strength characteristic of polyurethane foam subjected to axial loadings. This ...

In conclusion, the ideal polyol-isocyanate content is determined with the relationship between the compressive stress and polyol-isocyanate content variation. It is observed that the 1:1 of ...

Polyurethane feedstocks March 2021: Isocyanates and polyols with triple-digit mark-ups / Shortages persist despite some plant start-ups / Trend in April: Still noticeably firmer ...

Polyurethane feedstocks November 2020: Isocyanates still rising / Polyols follow / Demand exceeds supply / No relief before mid-December ...

Remaining hydroxyls were available in the final polyol to react with the isocyanate in the polyurethane synthesis [19]. Hydroxyl index measurements of the synthesized bio-polyols were performed to ...