| 摘要 |
The use of salts of sulphonated alkenyl or alkenyl(poly)oxyalkyl phosphates of formula (I): [R<1>O-(CnH2nO)x-][R<2>O-(CnH2nO)y-][R<3>O-(CnH2nO)z-]P=O, in which R<1> is a group of formula (IIa): CH3-(CH2)a-CH(OH)-(CH2)b-CH(SO3M)-(CH2)c-CH2- or (IIb): CH3-(CH2)a-CH(SO3M)-(CH2)B-CH(OH)-(CH2)c-CH2-, or a residue formed by the separation of a water molecule from the group of formula (IIa) or (IIb); R<2> and R<3>, which may the same or different, are hydrogen or a residue with the definition given for group R<1>; n is the number 2 and/or 3; x, y and z, which may be the same or different, are numbers in the range from 0 to 100 and especially 0 to 30; a, b and c are numbers in the range from 0 to 18, where the sum of a, b and c is a number in the range from 12 to 18; and M is an alkali or ammonium ion or an equivalent of an alkaline earth ion; as emulsifiers provides outstanding results in emulsion polymerisation with special reference to coagulate formation.
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