| 摘要 |
THE FREE RADICAL INITIATED ADDITION POLYMERISATION OF ETHYLENICALLY UNSATURATED, PARTICULARLY ACRYLIC MONOMERS IN WHICH THE DISPERSED PHASE IS STABILISED BY A SURFACTANT INCLUDING AT LEAST ONE ANIONIC SURFACTANT COMPOUND OF THE FORMULA (I): R1 - (OA)n - X (I) WHERE R1 IS C16 TO C22 HYDROCARBYL INCLUDING AT LEAST TWO DOUBLE BONDS; OA IS OXYALKYLENE GROUP; n IS FROM 2 TO 60; AND X INCLUDES AT LEAST ONE ACIDIC H ATOM, AND IS PARTICULARLY A PHOSPHATE ESTER GROUP, OR A SALT THEREOF, IS DESCRIBED. THE USE OF THE SURFACTANTS OF THE FORMULA (I) ENABLE EFFICIENT EMULSIFICATION AND THUS POLYMERISATION AT TEMPERATURES ABOVE THOSE AT WHICH NON-IONIC UNSATURATED SURFACTANTS ARE EFFECTIVE. THE POLYMER LATEX PRODUCTS GIVE POLYMER FILMS HAVING GOOD WATER RESISTANCE PROPERTIES. |
