Patent ID: 6387991
Filing Date: 2002-05-14
Classification: C08F,C08J,C08L,D06L,D06M

Abstract:
An aqueous polymer solution comprising: (a) water; (b) from 1 to 20 weight percent, based on the total weight of the polymer solution, of a first polymer; (c) a second polymer present in an amount of from 10 to 90 weight percent, based on the total weight of (b) plus (c); and, (d) an optional third polymer, wherein:(I) the first polymer: (1) is a poly(vinyl alcohol) copolymer ionomer derivable from a poly(vinylacetate) copolymer obtained by copolymerization of vinyl acetate with at least one comonomer selected from the group consisting of: (i) C1-C8-alkyl acrylates; (ii) C1-C8-alkyl methacrylates; (iii) C1-C3-alkyl dialkylmaleates; (iv) C1-C3-alkyl dialkylfumarates; and (v) acid derivatives of any of the esters in (i)-(iv); (2) is from greater than 90% to 100% hydrolyzed with respect to the vinyl acetate units in the poly(vinylacetate) copolymer, and (3) has from 0.1 to 10 mole percent anionic carboxylate metal salt units; (II) the second polymer is a non-ionomeric poly(vinyl alcohol) polymer that is either (i) a poly(vinyl alcohol) homopolymer; (ii) a poly(vinyl alcohol) copolymer having up to 10 mole percent units derived from C1-C8-alkyl methacrylates, C1-C8-alkyl acrylates, C1-C3-alkyl maleates, or C1-C3-alkyl fumarates, or (iii) a mixture of (i) and (ii); and, (III) the optional third polymer is a starch.