| 摘要 |
The invention relates to a method for producing a aqueous dispersion and consists of the following steps: a) making available water and a suspending agent; b) adding and polymerising from 25.0 to 45.0 weight parts of a first compound containing A) 50.0 99.9 weight parts of alkylmethacrylate, B) 0.0-40.0 weight parts of alkylacrylate, C) 0.1-10.0 weight parts of cross-linking monomers and D) 0.0-0.8 weight parts of styrene monomers; c) adding and polymerising from 35.0 to 55.0 weight parts of a second compound containing E) 80.0-100.0 weight parts of (meth) acrylate, F) 0.05-10.0 weight parts of cross-linking monomers and G) 0.0- 20.0 weight parts of styrene monomers; d) adding and polymerisation from 10.0 to 30.0 weight parts of a third compound containing H) 50.0-100.0 weight parts of alkylmethacrylate, I) 0.0-40.0 weight parts of alkylacrylate and J) 0.0-10.0 weight parts of styrene monomers. The inventive method is characterised in the following: e) each polymerisation is carried out at a temperature of >60 and<90 °C and f) relative contents of all substances are selected such that the total weight of the components A) to I) in relation to the overall weight of the aqueous dispersion, is more than 50 % weight higher. |
