CONCENTRATED FORMS OF READY WATER-BASED PHOTOINITIATORS OBTAINED VIA HETERO-PHASE POLYMERISATION Russian patent published in 2012 - IPC C08F2/44 C08F2/46 C08F2/32 C08K5/00 C08K5/06 C08K5/07 C09D133/08 C09D133/10 G03F7/31 

FIELD: chemistry.

SUBSTANCE: concentrated aqueous dispersion of the polymer contains: a) a polymer carrier obtained via hetero-phase radical polymerisation of at least one ethylenically unsaturated monomer selected from a group comprising C₁-C₁₈-acrylates, C₁-C₁₈-methacrylates, acrylic acid, (meth)acrylic acid, styrene, vinyl toluene, containing hydroxy groups, arcylates or (meth)acrylates, acrylates or (meth)acrylates formed from alkoxylated alcohols, and containing several functional groups of acrylates or (meth)acrylates or mixture thereof, in the presence of b) a photoinitiator selected from a group comprising alpha-hydroxyketones, bisacyl phosphine oxides or phenyl glyoxylates or mixture thereof and c) optionally nonionic, cationic or anionic surfactant. The ratio of the mass of the photoinitiator to the mass of the polymer carrier in the aqueous dispersion of the polymer is equal to or greater than 35 parts of the photoinitiator per 100 parts of the polymer carrier. The invention describes a method of producing a concentrated aqueous dispersion of the polymer and a powdered composition of the photoinitoator polymer, as well as use of the aqueous dispersion of the polymer, the powdered composition of the photoinitiator polymer, in aqueous or non-aqueous compositions, coatings, ink, adhesives or compositions of materials for electronics.

EFFECT: obtaining a stable concentrated aqueous polymer dispersion and coatings based on said dispersion with good working characteristics.

8 cl, 10 tbl, 15 ex