Methods respectively for producing 2,4,6-tris (2-hydroxy-3-methyl-4-alkoxyphenyl)-1,3,5-triazine compound and 2,4,6-tris(2,4-dihydroxy-3-methylphenyl)-1,3,5-triazine
AssigneeKaneka Corporation
InventorsKoji Machida, Akira Nishiyama
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Abstract
The present invention provides methods respectively for producing a 2,4,6-tris(2-hydroxy-3-methyl-4-alkoxyphenyl)-1,3,5-triazine compound and 2,4,6-tris(2,4-dihydroxy-3-methylphenyl)-1,3,5-triazine, both of which are improved in yield and quality. The methods according to the present invention are characterized in that a reaction of 2,4,6-tris(2,4-dihydroxy-3-methylphenyl)-1,3,5-triazine with an alkylating agent is carried out using a base in the presence of an alcohol or water, and are also characterized in that an ester compound is used as an additive in a reaction of cyanuric chloride with 2-methylresorcinol.
Claims16
A method of producing a 2,4,6-tris(2-hydroxy-3-methyl-4-alkoxyphenyl)-1,3,5-triazine compound of formula (3), comprising:
- performing a reaction, in a solvent comprising ethanol, in presence of a base, between 2,4,6-tris(2,4-dihydroxy-3-methylphenyl)-1,3,5-triazine of formula (1) and an alkylating agent of formula (2),
- wherein the formula (1) is
- the formula (2) is RX, where R represents a C1-10 alkyl group, and X represents a leaving group, and
- the formula (3) is
- where R in the formula (3) represents a C1-10 alkyl group.
A method of producing 2,4,6-tris(2,4-dihydroxy-3-methylphenyl)-1,3,5-triazine of formula (1):
- comprising:
- performing a reaction between cyanuric chloride and 2-methylresorcinol in presence of a Lewis acid and at least one selected from the group consisting of ethyl acetate, isopropyl acetate, and hexyl acetate.
A method of producing a polarizer protective film, comprising:
- performing a reaction, in a solvent comprising ethanol, in presence of a base, between 2,4,6-tris(2,4-dihydroxy-3-methylphenyl)-1,3,5-triazine of formula (1) and an alkylating agent of formula (2), such that a 2,4,6-tris(2-hydroxy-3-methyl-4-alkoxyphenyl)-1,3,5-triazine compound of formula (3) is produced;
- mixing at least a thermoplastic resin and the compound of the formula (3) such that a thermoplastic resin composition is obtained;
- and
- forming the thermoplastic resin composition into a film-like shape,
- wherein the formula (1) is
- the formula (2) is RX, where R represents a C1-10 alkyl group, and X represents a leaving group, and
- the formula (3) is
- where R in the formula (3) represents a C1-10 alkyl group.
Dependencies are inferred from the claim text.