Low viscosity polymer polyols a process for their production as well as the manufacture of polyurethane from materials

摘要: A process for the production of stable, agglomerate-free, low viscosity graft copolymer dispersions through radical polymerization ethylenically unsaturated monomers in presence a base polyol, macromer, an enol ether specific formula, and optionally, organic solvent. These ethers correspond to general formula: A=CH--O--R wherein: represents di-valent residue formula ##STR1## R aliphatic hydrocarbon having 1 18 carbon atoms, cycloaliphatic 5 10 or substituted unsubstituted benzyl radical; R' hydrogen atom 8 atoms.