| 摘要 |
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. |
