Method for producing scratch resistant, weatherproof coatings

   
   

A process for producing scratch-resistant coatings comprises applying at least one UV-curable coating composition comprising as its photochemically crosslinkable constituent at least one aliphatic urethane (meth)acrylate prepolymer PU having at least two double bonds per molecule, or a mixture of at least one urethane (meth)acrylate prepolymer PU and at least one reactive diluent, to the target substrate and curing the resulting wet coating by exposure to ultraviolet radiation under an inert gas atmosphere.

Um processo para produzir revestimentos risc-resistentes compreende aplicar ao menos uma composição revestindo UV-uV-curable que compreende como seu constituent fotoquìmica crosslinkable ao menos um urethane aliphatic (PU do prepolymer do meth)acrylate que tem ao menos duas ligações dobro por a molécula, ou uma mistura ao menos de um urethane (PU do prepolymer do meth)acrylate e ao menos um diluent reactive, à carcaça do alvo e a curar o revestimento molhado resultante pela exposição à radiação ultravioleta sob uma atmosfera do gás inerte.

 
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> Fluorinated polyurethane elastomers prepared from polyether prepolymers formed from mono-substituted fluorinated oxetane monomers and tetrahydrofuran

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