Patent ID: 6528581
Filing Date: 2003-03-04
Classification: C09D

Abstract:
An aqueous emulsion composition suitable for use as a mastic topcoat or tiecoat comprising a water-insoluble latex polymer;wherein said latex polymer has a Tg of from âˆ’25Â° C. to 20Â° C. and is prepared from a monomer mixture comprising: (a) at least 20% by weight of at least one hydrophobic monomer selected from the group consisting of (C8 to C24) alkyl (meth)acrylates; (b) 0 or up to 45% by weight of at least one vinyl aromatic monomer, wherein the weight of (a) and (b) together constitute at least 25% by weight of said monomer mix; (c) 0 or up to 75% by weight of at least one monomer selected from the group consisting of (C1 to C4) alkyl (meth)acrylates; and (d) 0 or up to 5% by weight of at least one monomer selected from acrylic or methacrylic acid; wherein when (b) is not present in the monomer mix the amount of (d) is in the range from 0 or up to less than 2.5% by weight.