| 摘要 |
The use of at least one polyol (P) chosen from polyester and polyether polyols grafted by chains of at least one of the following: polystyrene, polyacrylonitrile and styrene/acrylonitrile copolymers and from polyester and polyether polyols in which at least one of the following: polystyrene, polyacrylonitrile and styrene/acrylonitrile copolymers is dispersed, as an incorporation into the formulation of the polyol constituent or of the polyol-polyamine constituent of a polyurethane forming the polymer matrix of a hydrolysis-resistant soft cellular material, said polyol or polyols (P) representing at least one part of said polyol constituent or at least one part of the polyol fraction of said polyol-polyamine constituent.
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