Anic S.p.a.

Giampaolo Giuliani

Sebastiano Cesca

Aldo Priola

Sergio Arrighetti

Aldo Brancaccio

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).

Coating method and composition

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.

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San Donato Milanese (Milan), Italy

Giampaolo Giuliani