FIELD: chemistry.
SUBSTANCE: invention relates to a polymer latex for coatings. Polymer latex for coatings comprises a reaction product obtained by free-radical emulsion polymerisation in an aqueous medium of ethylenically unsaturated monomers, comprising at least one conjugated diene, in the presence of a degraded polysaccharide having a DE value in the range from more than 40 to 70 measured according to ISO 5377 (1981-12-15), and optionally an alkyl mercaptan in an amount of no more than 2.5 weight percent based on the total weight of ethylenically unsaturated monomers. Process for the production of latex, its use, a coating composition, a method for coating a paper or cardboard and coated paper or cardboard are also disclosed.
EFFECT: technical result is the use of fewer mercaptan chain transfer agents in the process for producing latex while maintaining high performance properties when used in coatings.
13 cl, 1 tbl, 9 ex
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