| abstract |
Rubber-elastic microsuspension (graft) polymers are produced by (1) dispersing a mixture of constituents A11-A13 whose entire weight amounts to 100 % and water, using a protective colloid in a dispersion of particles whose average diameter is 0.08-100 mu m, whereby A11= 30-99.9 wt. % ethylenically unsaturated monomers as constituent A11, A12= 0-20 wt. % cross-linking monomers as constituent A12, A13= 0.1-50 wt. % aliphatic hydrocarbon polymers with a glass transition temperature below 0 DEG C as constituent A13, (2) polymerizing the droplets with a radical polymerization initiator and optionally (3) by graft polymerization of the mixture obtained in step (2) in the presence of ethylenically unsaturated monomers. |