Abstract: A method for coating various surfaces is disclosed, which comprises the step of preparing a mixture composed by at least one compound such as an epoxy-acrylic resin, a polyester alpha-omega-acrylate resin, an unsaturated polyester resin, or a urethane-acrylate resin and by at least one unsaturated compound of the amide, lactam, piperidone and urea classes and using said mixture for compounding a varnish to be applied to the selected substrate and then irradiated with an appropriate radiation (range 200 to 400 nm wavelength).

Abstract: Novel thermoplastic materials can be obtained in which besides the resin formed by polymerizing alkenylaromatic with or without acrylic and vinylic monomers, there is also a branched interpolymer the main carbon atom chain of which has a saturated elastomeric nature, whereas the chains which make up the branch-offs have a plastic character. Side-chains on the saturated rubber, which have the same composition as the non-grafted resin, favors the even dispersion of the rubber in the resin matrix so that the physical and mechanical properties of the resin are considerably improved: an improved resistance to ageing is also achieved. A styrene-acrylonitrile resin grafted on a saturated ethylene-propylene copolymer is but an example. The preparation process is carried out in solution: critical conditions, additives, adjuvants, initiators and promoters are indicated and exemplified. Irradiation with ultraviolet rays may be of help.