KR910011970A - Manufacturing method of silicone-modified polyester resin for coating and solvent coating composition containing same - Google Patents

Abstract

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Description

Manufacturing method of silicone-modified polyester resin for coating and solvent coating composition containing same

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Claims (10)

Method for producing a silicone-modified polyester crystal, characterized in that prepared in the following (1) and (2) step. (1) condensing a divalent or higher alcohol with a reactive silicone mixture, and (2) adding a solvent after reacting the dibasic acid mixture with the intermediate resin prepared in step (1). According to claim 1, wherein the dihydric or higher alcohol mixture is aliphatic or cycloaliphatic having 2 to 18 carbon atoms, such as ethyl phen glycol, diethylene glycol, propylene glycol, dipropylene glycol, neopentyl glycol, 1,6-hexanediol, Silicone-modified polyester resin, characterized in that one or two or more of 1,4-cyclohexanedimethanol, triethylglycol, trimetholethane, trimetholpropane, hydroxy pibaric neopentyl glycol esters are selected Manufacturing method. According to claim 1, wherein the dihydric alcohol mixture is 20 to 40% by weight of trimetholol propane, 20 to 40% by weight of neopentyl glycol, silicone modified poly, characterized in that 0 to 20% by weight of ethylene glycol Process for producing ester resin. The method for producing a silicone-modified polyester resin according to claim 1, wherein the reactive silicone compound is composed of the following structural formulas I and / or II. (Ⅰ) R ₁ , R ₂ : alkyl or aryl group having 1 to 12 carbon atoms n: 2 to 6 (Ⅱ) R ₃ R ₄ : alkyl or aryl group having 1 to 6 carbon atoms m: 4 to 10 The method of claim 1 or 3, wherein the silicone mixture is used in 30 to 50% by weight of the one-step condensation reaction product. The method of claim 1, wherein the dibasic acid mixture is one or more selected from isophthalic acid, terephthalic acid, adipic acid, sebacic acid, and azelaic acid. The dibasic acid mixture according to claim 1 or 6, wherein the dibasic acid mixture is composed of 30 to 45% by weight of isophthalic acid, 0 to 20% by weight of terephthalic acid, 10 to 30% by weight of adipic acid, and 0 to 10% by weight of azelaic acid. A method for producing a silicone-modified polyester resin, characterized in that. The method of claim 1, wherein the solvent is normal propyl alcohol, isopropyl alcohol, normal butanol, methyl isobutyl carbitol, ethylene glycol acetate, butyl glycol acetate, ethyl glycol glycol, butyl diglycol acetate, methyl diglycol, ether Diglycol, butyl diglycol, methyl isebutyl ketone, xylene, toluene one or two or more of the selected method for producing a silicone-modified polyester resin. The method according to claim 1 or 8, wherein the resin prepared in the two steps, 1 to 3% by weight of xylene, 10 to 25% by weight of butyl diglycol, 50 to 80% by weight of ethylene glycol acetate. A method for producing a silicone-modified polyester resin, characterized in that diluted to 58 to 62% by weight of non-volatile content in a mixed solvent consisting of 0 to 20% by weight of methylene glycol acetate and 3 to 10% by weight of normal butanol. 50 to 60% by weight of silicone-modified polyester resin prepared by any one of claims 1 to 9, 3 to 10% by weight of alkoxylated aminoformaldehyde resin, 15 to 25% by weight of titanium oxide, curing accelerator and additive 0.1 Solvent composition, characterized in that composed of ~ 2% by weight, 15-25% by weight of the solvent. ※ Note: The disclosure is based on the initial application.