Polymerizable compositions based on difunctional thio(meth)acrylate monomers and transparent polymer compositions obtained therefrom
AssigneeEssilor International (Compagnie Generale d'Optique)
InventorPeiqi Jiang
Life of this patent
Estimating the term…
Abstract
The composition includes, based on the total weight of polymerizable monomers present in the composition: a) 10 to 70% by weight of a difunctional thio(meth)acrylate monomer, of formula (I): in which R1 and R2 denote a hydrogen atom or a radical —CH3, or of a mixture of at least one monomer of formula (I) with at least one monomer of formula (II): in which R′1 and R′2 denote a hydrogen atom or a radical —CH3; b) 10 to 60% by weight of at least one monomer of formula (III): in which R3 and R4 denote a hydrogen atom or a radical —CH3 and O≦m +n≦10; and c) 5 to 30% by weight of at least one aromatic or polycyclane mono(meth)acrylate monomer.
Claims22
Composition comprising, based on the total weight of polymerizable monomers present in the composition:
- a) 10 to 70% by weight of a difunctional thio(meth)acrylate monomer, of formula (I):
- in which R1 and R2 denote a hydrogen atom or a radical —CH3,
- or of a mixture of at least one monomer of formula (I) with at least one monomer of formula (II):
- in which R′1 and R′2 denote a hydrogen atom or a radical —CH3;
- b) 10 to 60% by weight of at least one monomer of formula (III):
- in which R3 and R4 denote a hydrogen atom or a radical —CH3 and O≦m+n≦10;
- and
- c) 5 to 30% by weight of at least one aromatic or polycyclane mono(meth)acrylate monomer.
Polymerizable composition, comprising, based on the total weight of polymerizable monomers present in the composition:
- a) 10 to 70% by weight of a difunctional thio(meth)acrylate monomer, of formula (I):
- in which R1 and R2 denote a hydrogen atom or a radical —CH3,
- or of a mixture of at least one monomer of formula (I) with at least one monomer of formula (II):
- in which R′1 and R′2 denote a hydrogen atom or a radical —CH3;
- b) 10 to 60% by weight of at least one monomer of formula (III):
- in which R3 and R4 denote a hydrogen atom or a radical —CH3 and O≦m+n10;
- and
- c) 5 to 30% by weight of at least one aromatic or polycyclane mono(meth)acrylate monomer, and
- e) 1 to 10% by weight of a polythiol R(SH)n, where n is an integer from 2 to 6, R is an organic group of valency n, or a mixture of these polythiols.
Polymerizable composition characterized in that it includes:
- a) 10 to 70% by weight of a difunctional thio(meth)acrylate monomer, of formula (I):
- in which R1 and R2 denote a hydrogen atom or a radical —CH3,
- or of a mixture of at least one monomer of formula (I) with at least one monomer of formula (II):
- in which R′1 and R′2 denote a hydrogen atom or a radical —CH3;
- b) 10 to 60% by weight of at least one monomer of formula (III):
- in which R3 and R4 denote a hydrogen atom or a radical —CH3 and O≦m+n10;
- c) 5 to 30% by weight of at least one aromatic or polycyclane mono(meth)acrylate monomer;
- d) 0 to 15% by weight of a polyalkylene glycol di(meth)acrylate;
- and
- e) 0 to 10% by weight of a polythiol R(SH)n, n is an integer which can assume the values from 2 to 6, R is an organic group of valency n, or a mixture of these polythiols;
- relative to the total weight of a)+b)+c)+d)+e).
Dependencies are inferred from the claim text.