| 摘要 |
Polymers of the general formula:- <IMAGE> in which R<1> and R<2> are the same or different alkyl radicals, which can also be joined together to form a ring, X<-> is an anion, n, which corresponds to the valency of the anion, is a small whole number and y is the degree of polymerisation, are prepared by a polymerisation process wherein a 30 to 70% aqueous solution of a dialkyldiallylammonium salt of the general formula:- <IMAGE> in which R<1>, R<2>, X<-> and n have the same meanings as above, is mixed at a pH value of from 6.7 to 10.3 with a peroxydisulphate initiator and, if X<-> is not chloride or bromide, with a soluble chloride and reacted either discontinuously at a temperature of from 10 to 80 DEG C. or continuously at a temperature of from 40 to 90 DEG C. in an apparatus which provides a residence time sufficient for the polymer to be obtained in yields of over 90%. The polymerisation process is less sensitive to oxygen than previous processes and is easily controllable. |
