| 摘要 |
Polymer composition resulting from the polymerisation of a polymerisable composition including: - at least 50 % by weight of a monomer of a mixture of monomers corresponding to the formula (I): <IMAGE> in which: X denotes <IMAGE> and R and R' denote H or CH3; - from 0 to 50 % by weight of one or a number of mono- or polyfunctional allyl, vinyl, acrylic or methacrylic comonomer(s) (II): - from 0.2 to 10 %, relative to the weight of the components I + II, of a compound of formula (III): <IMAGE> in which R4 and R5 denote hydrogen or else one of the radicals R4 and R5 is a hydrogen atom while the other forms a ring with R2; R1, R2 and R3 are hydrogen or alkyl capable of being substituted with OH and/or interrupted by an ether, ester or ketone functional group.
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