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Abstract

According to the invention there is provided a method of coating a low surface energy substrate including the steps of: a) providing a polymeric precursor which includes a group of sub-formula (I) where R¹ is i) CR^a, where R^a is hydrogen or alkyl, ii) a group S(0)_pR¹³, or SiR¹⁴ where R¹³ and R¹⁴ are independently selected from hydrogen or hydrocarbyl, p is 0, 1 or 2 and q is 1 or 2, iii) C(0)N, S(0)₂N, C(0)ON, CH₂ON, or CH═CHR^CN where R^c is an electron withdrawing group, or iv) OC(0)CH, C(0)OCH or S(0)2CH; in which R¹² is selected from hydrogen, halo, nitro, hydrocarbyl, optionally substituted or interposed with functional groups, or formula (II) R² and R³ are independently selected from (CR⁷R⁸)n, or a group CR⁹R¹⁰, CR⁷R⁸CR⁹R¹⁰ or CR⁹R¹⁰CR⁷R⁸ where n is 0, 1 or 2, R⁷ and R⁸ are independently selected from hydrogen or alkyl, and either one of R⁹ or R¹⁰ is hydrogen and the other is an electron withdrawing group, or R⁹ and R¹⁰ together form an electron withdrawing group; R⁴ and R⁵ are independently selected from CH or CR¹¹ where CR¹¹ is an electron withdrawing group, the dotted lines indicate the presence or absence of a bond, X¹ is a group CX²X³ where the dotted line bond to which it is attached is absent and a group CX² where the dotted line to which it is attached is present, Y¹ is a group CY²Y³ where the dotted line to which it is attached is absent and a group CY² where the dotted line to which it is attached is present, and X^2, X³, Y² and Y³ are independently selected from hydrogen, fluorine or other substituents; and b) either (i) coating the low surface energy substrate with the polymeric precursor and polymerising the polymeric precursor to form a polymeric coating, or (ii) polymerising the polymeric precursor and contacting the polymerised polymeric precursor with a low surface energy substrate to form a polymeric coating on the low surface energy substrate.

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