English to Italian Law/Patents Chemistry; Chem Sci/Eng

wherein R1 is C1-18 alkyl, C5-12 cyclic alkyl, phenyl, styryl, cumyl or H, R2 is C1-18 alkyl, C5-12 cyclic alkyl, phenyl, styryl, cumyl, or a group

wherein R and R' are independently selected from H, methyl, ethyl or propyl, R3 is C1-18 alkyl, C5-12 cyclic alkyl, styryl, cumyl, H or a group -CH2CH2COOR" wherein R" is a C1-18 alkyl or a group