- ADAMANTYL (METH)ACRYLIC MONOMER AND (METH)ACRYLIC POLYMER CONTAINING THE SAME AS REPEATING UNIT
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Provided according to the present invention are an adamantyl (meth)acrylate represented by formula (1), having a formazin standard turbidity of less than 1.7 NTU (Nephelometric Turbidity Unit) in methylethylketone or tetrahydrofuran, and also a (meth)acrylic copolymer comprising the adamantyl (meth)acrylate as a repeating unit: (in the formula, R1 represents hydrogen or a methyl group; R2 through R4 each independently represent a hydrogen atom, a hydroxyl group, an alkyl group having a carbon number of 1 to 3, an aryl group, an alkoxy group, an aryloxy group, a halogen group, an alkyl halide group, or a hydroxyalkyl group; and n1 represents 0 or 1).
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Paragraph 0068
(2013/03/26)
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- Adamantane derivatives and processes for the preparation thereof
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Adamantane derivatives in which two (meth)acryloyloxyalkyl groups are bonded with an adamantane ring through ester groups, adamantane derivatives in which two adamantane rings are bonded through an alkylene group and two urethane bonds, which two adamantane rings each have a (meth)acryloyloxy group bonded thereto directly or through a coupling group, and adamantane derivatives each having a structure in which a group containing an adamantane ring hangs on the alkylene group of an alkylene glycol di(meth)acrylate. The compounds are useful as dental materials intermediates therefor, and as intermediates for optical materials such as lenses.
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Page column 24-25
(2008/06/13)
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- Chemical amplifying type positive resist composition
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A chemical amplifying type positive resist composition, excellent in balance of performance of resolution and sensitivity, having high dry etching resistance and comprising; a resin having a polymerization unit derived from a monomer represented by the following formula (I): wherein R1 and R2 independently represent hydrogen or an alkyl group having 1 to 4 carbons, and R3 represents hydrogen or a methyl group, the resin being insoluble in alkali itself but becoming alkali-soluble due to the action of an acid; and an acid generating agent is provided.
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- POLYMERIZABLE ADAMANTANE DERIVATIVES AND PROCESS FOR PRODUCING THE SAME
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A compound shown by the following formula: ???wherein each of R1a, R2a, R3aand R4arepresents a substituent selected from a non-reactive atom, a non-reactive group, a hydroxyl group and an amino group, and at least two members selected from R1a, R2a, R3aand R4aare a hydroxyl group, a carboxyl group or an amino group; is subjected to an esterification reaction or an amidation reaction with a polymerizable unsaturated compound (e.g., an alcohol, a carboxylic acid, an amine) in the presence of a catalyst comprising an element selected from the Group 3 elements, such as a samarium compound, to obtain a polymerizable adamantane derivative having at least one polymerizable unsaturated group in high yield.
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