A novel reactive phenylphosphoryl glycol ether oligomer (PPGE) was synthesized to improve the flame retardancy of rigid polyurethane foam (RPUF). The PPGE segments in RPUF simultaneously enhanced its compressive modulus and flame retardancy. With the incorporation of 2% phosphorous weight content in RPUF. the limiting oxygen index value of 2%PRPUF improved from 20. https://parisnaturalfoodes.shop/product-category/deodorant-cream-geranium/