Method of sizing paper using a sizing agent and a polymeric enhancer and paper produced thereof

A method of producing sized paper with enhanced sizing property characteristics which comprises employing in the manufacture of sized paper sizing agent and a sizing enhancer that is a polymerization reaction product of monomer consisting essentially of at least one quaternary diallylammonium monomer of formula (I):

• ##STR7## and at least one diallylammonium monomer of formula (II):
• ##STR8## where R.sub.1A, R.sub.1B, R.sub.1C and R.sub.1D are independently hydrogen or C.sub.1 -C.sub.22 straight chain or branched alkyl;
• R.sub.2 and R.sub.3 are independently alkyl, alkenyl or aryl;
• R.sub.4 is hydrogen, alkyl, alkenyl or aryl;
• and
• X.sup.- is a monovalent anion or a multivalent equivalent of a monovalent anion, wherein the sizing enhancer contains about 20 to about 98 mole percent of units from the monomer of formula (I) and about 80 to about 2 mole percent of units from the monomer of formula (II) and wherein the sizing agent and size enhancer are added in amounts sufficient to produced a sized paper containing from about 0.005 wt % to about 1.5 wt % of the sizing agent, and from about 0.002 wt % to about 0.6 wt % of the sizing enhancer, based on the weight of the dried sized paper.