Patent ID: 9683142
Date: 2017-06-20
CPC Classifications: C08K,C08L,C09J

Claim:
1. An aqueous sealant composition which is not water-sensitive or air-sensitive comprising: (a) from 10 to 40 wt % of a copolymer of a styrene based monomer and an acrylic acid based monomer; (b) from 20 to 65 wt % of a powdered filler having an average particle size of less than 40 microns and selected from calcium carbonate, dolomite, limestone, chalk, marble, calcite, whitings, aluminium silicates, barytes, titanium dioxide, talc, aluminium dioxide, magnesium hydroxide and silicates; and (c) from 0.1 to 20 wt % of a polyisobutene having an average molecular weight of from 1000 to 1500, wherein the weight percentage is based on the total weight of the composition.