Poly 4-vinyl 3 -methoxy phenyl

Figure 2. PhotoFries rearrangement of poly(4-vinyl 3 -methoxy phenyl benzoate)...

Poly(o-tolyl vinyl ketone-comethyl vinyl ketone) Poly(p-methoxy phenyl vinyl ketone)... 

Poly(p-methoxy phenyl vinyl ketone-co-methacrylate) Poly(p-methoxy phenyl vinyl ketone-co-styrene) Poly(p-methoxy phenyl vinyl ketone-co-2-hydroxy-4-(2-methacryloxyethoxy-benzophenone)... 

PhotoFries Rearrangement Of Poly (4-vinyl 3 -methoxv phenvl benzoate). Unit structures obtained in this reaction are those of the poly (4-vinyl 2 -hydroxy 4 -methoxy benzophenone) (Poly-5) and poly (4-vinyl 4 -hydroxy 2 -methoxy benzophenone) described in Figure II. For spectroscopic caracteristies we have compared the para-hydroxy derivative to poly (4-vinyl 2, 4 -dimethoxy ben-zophenone)(Poly-10) which is an intermediary in the synthesis of Poly-5 (13). Here too, absorption of the reaction products in the range of 100-360 nm were sufficient to estimate the ortho/para rearrangements ratio. The ultraviolet caracteristies of Poly-7, Poly-5, Poly-10 and results of irradiations of Poly-7 are listed in Tables VIII and IX. In the same conditions of irradiations, ortho/para ratio and yields are smaller than the values obtained in the case of Poly-6. But, as in the previous case, benzophenones are obtained very rapidly and the ortho product formation is greater than the para one. It is thus possible to consider poly (4-vinyl phenyl benzoates) as U.V. protectors. 

Poly(styrene)-i)/oc/ -poly[(3-vinyl phenyl)methoxy(-ferf-butyldimethylsilane)J-f)/oct-poly(styrene) ... 

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