Patent ID: 6770707
Filing Date: 2004-08-03
Classification: C07C,C08F,C08G,G02B

Abstract:
A radically polymerisable composition, characterised in that it comprises:(1) at least one monofunctional monomer having the formula (I) below: in which:R1 and R2, which are identical or different, independently are hydrogen or an alkyl radical, which is linear or branched and comprises 1 to 4 carbon atoms; R3 and R4, which are different, independently are one hydrogen and the other an alkenyl radical comprising 2 to 6 carbon atoms; Z represents a carbamate function (â€”NHâ€”COâ€”Oâ€”), a thiocarbamate function (â€”NHâ€”COâ€”Sâ€”), a urea function (â€”NHâ€”COâ€”NR7â€”, in which R7 represents a hydrogen or a linear, branched or cyclic alkyl group which comprises 1 to 6 carbon atoms) or an oxazolidone function: R5 is selected from the group consisting of: (i) alkylene oxide radicals and polyalkylene oxide chains of formula: in which the R7 groups, which are identical or different when m&gE;2, are alkylene radicals which are linear or branched and which comprise 2 to 5 carbon atoms, and in which m is an integer selected such that the total number of carbon atoms of is between 2 and 112;(ii) ester radicals and polyester chains of formula in which the R8 groups, which are identical or different when n&gE;2, are alkylene radicals which are linear or branched and which comprise 2 to 5 carbon atoms, and in which n is an integer selected such that the total number of carbon atoms of is between 2 and 168;(iii) siloxane radicals and polysiloxane chains of formula in which the R9 and R10 groups, which are independently identical or different when o&gE;2, are alkyl radicals which comprise 1 or 2 carbon atoms, and o is an integer between 1 and 18; and(iv) carbonate radicals and polycarbonate chains of formula in which the R10â€² groups, which are identical or different when r&gE;2, are alkylene radicals which are linear or branched and which comprise 1 to 5 carbon atoms, and in which r is an integer between 1 and 21; andR6 is an alkyl radical or an aryl radical; and (2) at least one difunctional monomer having the following formula (III), or a mixture of at least one difunctional monomer having formula (II) and at least one difunctinal monomer having formula (III), below: in which:R11 and R11â€², which are identical or different, independently are hydrogen or a methyl group; R12 is an alkylene radical which is linear or branched and which comprises 2 to 8 carbon atoms; a cycloalkylene radical comprising 3 to 6 carbon atoms; an ether radical of formula (R13â€”Oâ€”R13â€²) in which R13 and R13â€², which are identical or different, independently are an alkylene radical which is linear or branched and which comprises 2 to 4 carbon atoms; in which:R14, Râ€²14, R15 and Râ€²15, which are identical or different, independently are hydrogen or a methyl group; s and t are, independently, integers between 0 and 4 inclusive; X and Xâ€², which are identical or different, are a halogen; and p and q are, independently, integers between 0 and 4 inclusive.