Low odor polymer latex and coating composition comprising the same

A polymer latex comprising the reaction product obtained by free-radical emulsion polymerization in aqueous medium of ethylenically unsaturated monomers comprising at least one conjugated diene in presence of a degraded polysaccharide having a dextrose equivalent (DE) of 42 to 70 measured according to ISO 5377 (1981 Dec. 15),

• wherein the free-radical emulsion polymerization is conducted in the presence of a chain transfer agent in an amount of no more than 2.5 weight percent based on the total weight of the ethylenically unsaturated monomers,
• wherein the chain transfer agent is a mercapto compound,
• wherein the ethylenically unsaturated monomers comprise:
• a) 19.9 to 80 weight percent of a conjugated diene;
• b) 25 to 75 weight percent of a vinyl aromatic compound;
• c) 0.1 to 10 weight percent of an ethylenically unsaturated acid;
• and
• d) 0 to 80 weight percent of an ethylenically unsaturated monomer different from the monomers a) to c),
• wherein the weight percentage of the monomers a) to d) are based on the total weight of the ethylenically unsaturated monomers, wherein the monomers a) to d) are different from each other.