PREPARATION OF REVERSED-PHASE EMULSION POLYMER IMPROVING ADDITION OF AMMONIUM DIARYLDIMETHYL CHLORIDE AND REVERSED-PHASE EMULSION POLYMER PREPARED THEREBY

摘要

The present invention provides a process for improved incorporation of diallyldimethylammonium chloride (DADMAC) into an acrylamide polymer. This invention makes use of a copolymerizable promoter monomer. Also provided by the present invention are inverse emulsion terpolymers of diallyldimethylammonium chloride. The improved incorporation resides in the use of a promoter monomer that is more reactive with acrylamide than is the DADMAC monomer and is selected from ##STR1## wherein R is --H or CH.sub.3 ;PPX is --O--, or -- NH--;PPn has a value of 2-4; andPPA is an ion selected from the group consisting of Cl.sup. -, CH.sub.3 SO.sub.4. sup.-, HSO.sub.4.sup.- and NO. sub.3.sup.-.PPSpecific monomers within this formula included, for example, 2- methacryloylethyltrimethylammonium chloride and 2- acryloylethyltrimethylammonium chloride.PPTypical of such promoter monomers are 2-methacryloylethyl trimethyl ammonium chloride and 2-acryloylethyl trimethyl ammonium chloride.