Patent ID: 11867875
Assignee: NOF CORPORATION
Field: Optics (Instruments)
Classification: CPC G  C  B | IPC C  G

Claim 0:
1. A monomer composition for contact lenses consisting of:
(A) a siloxanyl group-containing itaconic acid diester monomer of the following formula (1):, (B) one or more amide group-containing monomers selected from the group consisting of N-vinylpyrrolidone, N-vinyl-N-methylacetamide, and N-vinylacetamide;
(C) one or more hydroxy group-containing monomers selected from the group consisting of hydroxyethyl (meth)acrylate, hydroxypropyl (meth)acrylate, hydroxybutyl (meth)acrylate, hydroxyethyl acrylamide, ethylene glycol monovinyl ether, and diethylene glycol monovinyl ether;
(D) a siloxanyl group-containing (meth)acrylate of the following formula (2):, wherein R1 is a hydrogen atom or a methyl group, and n is 10 to 20; and
(E) a cross-linking agent,
wherein with respect to 100% by mass of a total of the components (A) to (E) in the composition, a content ratio of the component (A) is 5 to 60% by mass, a content ratio of the component (B) is 10 to 60% by mass, a content ratio of the component (C) is 5 to 45% by mass, a content ratio of the component (D) is 5 to 35% by mass, and a content ratio of the component (E) is 0.1 to 15% by mass.