An epoxy compound of formula (1) is provided. A resist composition comprising the epoxy compound is capable of adequately controlling the diffusion length of acid generated from an acid generator without sacrificing sensitivity. ##STR00001##

An epoxy compound of formula (1) is provided. A resist composition comprising the epoxy compound is capable of adequately controlling the diffusion length of acid generated from an acid generator without sacrificing sensitivity. ##STR00001##

An electrolyte includes an ionic liquid and an electrolyte salt dispersed in the ionic liquid. The ionic liquid includes organic nitrogen cations and charge-delocalized organic anions. The electrolyte salt is selected from alkali metal salt and/or alkaline earth metal salt.

An electrolyte includes an ionic liquid and an electrolyte salt dispersed in the ionic liquid. The ionic liquid includes organic nitrogen cations and charge-delocalized organic anions. The electrolyte salt is selected from alkali metal salt and/or alkaline earth metal salt.

An acrylic rubber composition comprising 5 to 15 parts by weight of a plasticizer having a solubility parameter SP value (by Small's method) of 8.5 to 10.5 based on 100 parts by weight of super cold resistant grade acrylic rubber having a glass transition point Tg of −42° C. or less, wherein the acrylic rubber composition can give a vulcanizate with the TR10 value, which is an index of cold resistance, of −42° C. or less both initially and after oil dipping. In the acrylic rubber composition, first, the ratio of an acrylate monomer that constitutes acrylic rubber is adjusted, thereby the low temperature characteristics can be maintained even in an oil contact environment. This intentionally reduces the oil resistance of the vulcanized rubber molded product, thereby increasing the amount of oil swelling into the vulcanized rubber molded product and improving the flexibility in a low temperature environment.

An acrylic rubber composition comprising 5 to 15 parts by weight of a plasticizer having a solubility parameter SP value (by Small's method) of 8.5 to 10.5 based on 100 parts by weight of super cold resistant grade acrylic rubber having a glass transition point Tg of −42° C. or less, wherein the acrylic rubber composition can give a vulcanizate with the TR10 value, which is an index of cold resistance, of −42° C. or less both initially and after oil dipping. In the acrylic rubber composition, first, the ratio of an acrylate monomer that constitutes acrylic rubber is adjusted, thereby the low temperature characteristics can be maintained even in an oil contact environment. This intentionally reduces the oil resistance of the vulcanized rubber molded product, thereby increasing the amount of oil swelling into the vulcanized rubber molded product and improving the flexibility in a low temperature environment.

A contact lens and a manufacturing method thereof are proposed. The contact lens may include a resin composition containing an acrylic-based monomer and a Boswellia extract. By containing a Boswellia extract, the contact lens can prevent adherence of bacteria when worn on the user's eye and serve as an antibacterial agent to prevent bacterial infection, so it can secure a good contact fit and high antibacterial performance.

A contact lens and a manufacturing method thereof are proposed. The contact lens may include a resin composition containing an acrylic-based monomer and a Boswellia extract. By containing a Boswellia extract, the contact lens can prevent adherence of bacteria when worn on the user's eye and serve as an antibacterial agent to prevent bacterial infection, so it can secure a good contact fit and high antibacterial performance.

A contact lens and a manufacturing method thereof are proposed. The contact lens may include a resin composition containing an acrylic-based monomer and a Boswellia extract. By containing a Boswellia extract, the contact lens can prevent adherence of bacteria when worn on the user's eye and serve as an antibacterial agent to prevent bacterial infection, so it can secure a good contact fit and high antibacterial performance.

A model material clear composition comprises an ethylenically unsaturated monomer (A1) having at least one group selected from a group consisting of a dicyclopentenyl group and a dicyclopentanyl group, at least one photopolymerization initiator selected from a group consisting of an acylphosphine oxide-based photopolymerization initiator and an α-hydroxyacetophenone-based photopolymerization initiator, a hindered amine-based polymerization inhibitor, and a phenolic antioxidant, and contents (% by mass) of the initiator, the polymerization inhibitor, and the antioxidant satisfy Formula (1): content of photopolymerization initiator≥content of polymerization inhibitor≥content of oxidation inhibitor, and Formula (2): 1≤√content of photopolymerization initiator/√[(content of polymerization inhibitor×10).sup.2+(content of antioxidant×100).sup.2]≤800.