Nof Corporation

Mao Sorimachi

Nobuyuki Sakamoto

Yosuke Matsuoka

Nobuyuki Yoshioka

Toshiya Itei

Ryota Kobayashi

The invention provides a silicone monomer which is suitable for the manufacture of ophthalmic devices, such as contact lenses, intraocular lenses, and keratoprosthesis, a monomer composition containing the monomer, and a polymer which fulfills both surface hydrophilicity and oxygen permeability at the same time. The silicone monomer of the present invention is represented by the formula (1a) or (1b): (X: a monovalent C2 to C6 organic group having one or more &#x2014;OH and optionally one O or N in its main chain; Zto Z: a C1 to C4 alkyl group; n: 1 to 3; a and b: 0 or 1).

Silicone monomer

The invention provides a silicone monomer having high purity and suitable for use in the manufacture of ophthalmic devices, and a contact lens produced from the silicone monomer as a polymerizable component. The silicone monomer is represented by the formula (1): wherein Yto Yeach independently stands for an alkyl group having 1 to 4 carbon atoms, n is an integer of 0 to 3, a and b each independently denotes an integer of 0 or 1, and R stands for a hydrogen atom or a methyl group.

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Tsukuba, Japan

Mao Sorimachi