| abstract |
A polymer blend comprising (a) a modified block copolymer comprising (i) a polystyrene block and (ii) a polydiene block or a hydrogenated polydiene block, said polydiene block or hydrogenated polydiene block being modified to contain an average of one or more carboxyl groups; and (b) a polymer comprising a polymerization reaction product (i) at least one acrylic or methacrylic acid ester of a non-tertiary alcohol having 1 to 14 carbon atoms, inclusive, (ii) at least one monomer having carboxylic acid functionality which is present in an amount ranging from about 1 to about 15 parts by weight, based on 100 parts by weigth of polymer (b); and (iii) a titanate selected from the group consisting of (ethanol,2,2',2'-nitrilotris-titanium(4+) salt); titanium bis(ethyl-3-oxobutanolato-O1O3)bis2-propanolato; a reaction product of tetraalkyltitanate with a β-diketone and an alkanolamine; and tetrabutyltitanate (1-butanol,titanium(4+) salt). |