This is the second part of the article with a subtitle ... The First Synthesis published by us previously. For this, second part, we have chosen copolymers with low proportion of (-b-) units, as well as random copolymers with substantial proportions of (-b-) units. This is in contrast to the part I, in which we mostly described alternating copolymerization. In this article, radical copolymerization of tetraethyl vinylidene phosphonate (B) with several vinyl/ethylenic monomers (M-2), namely acrylamide, methacrylamide, methyl methacrylate, n-butyl acrylate, n-butyl methacrylate, and styrene has been described and reactivity ratios of monomers as well as the average length of the comonomer blocks (n) have been determined (r(1) = 0). It has been found, that (as it should be) there is a proportionality between r(2) (=k(m2M2)/k(m2B)) and n. Moreover, there is a proportionality between r(2) (or n) and the comonomer (M-2) reactivity, defined as the rate constant of M-2 addition to the styrene radical. (c) 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2014, 52, 1614-1621