| 摘要 |
The use of at least one type of polyol (P) selected from polyesters and polyether-polyols grafted by at least one type of polystyrene, polyacrylonitrile and styrene and acrylonitrile copolymers and polyester-and polyether-polyols, in which at least one type of polystyrene, polyacrylonitrile and styrene and acrylonitrile copolymers is dispersed as entering in a formulation of a polyol constituent or a polyurethane polyol-polyamine constituent forming the polymer matrix of a hydrolysis resistant elastic cellular material, wherein said polyols (P) represent at least one part of said polyol constituent or at least one part of a polyol fraction of said polyol-polyamine constituent. |
