A polymer extender composition comprising monomers copolymerized in the following percentages by weight: (a) from about 5% to about 90% of a monomer of the formula I: R1—OC(O)—C(R)═CH2  (I) (b) from about 5% to about 85% of vinylidene chloride, vinyl chloride, vinyl acetate, or a mixture thereof, (c) from about 0.5% to about 3% of a monomer of the formula II: HO—CH2—NH—C(O)—C(R)═CH2  (II) (d) from about 0.5% to about 3% of a monomer of the formula III HO—CH2CH2—OC(O)—C(R)═CH2  (III) and (e) from about 1% to about 5% of a monomer of the formula IV: H—(OCH2CH2)m—O—C(O)—C(R)═CH2  (IV) (f) from 0% to about 25% of methyl methacrylate, vinylbenzyl chloride, styrene or a mixture thereof, wherein each R is independently H or CH3; R1 is a linear or branched or cyclic alkyl chain having from about 4 to about 18 carbon atoms, and m is 2 to about 10.