Epoxy resin with improved water resistance and composition comprising same
AssigneeSamyang Corporation
InventorsJae Hoon LEE, Hoon RYU, Jun Seop IM
Life of this patent
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Abstract
The present invention relates to an epoxy resin with improved water resistance and a composition comprising same and, more specifically, to: an epoxy resin which is prepared by the reaction of epihalohydrin and a diol component including anhydrosugar alcohol and a diol other than the anhydrosugar alcohol in a specific content ratio, thus exhibiting excellent eco-friendliness and improved water resistance, and, when applied to a coating composition, exhibits an anti-fog effect and at the same time can provide a coating with improved durability against moisture; and a composition comprising the epoxy resin (preferably, an anti-fog coating composition).
Claims15
An epoxy resin prepared by the reaction of a diol component and epihalohydrin, wherein the diol component comprises 46 to 94 parts by weight of anhydrosugar alcohol and 6 to 54 parts by weight of diol other than anhydrosugar alcohol, based on total 100 parts by weight of the diol component.
A method for preparing an epoxy resin, comprising the step of:
- (1) conducting the first preliminary reaction of anhydrosugar alcohol and epihalohydrin in the presence of basic catalyst;
- (2) adding diol other than anhydrosugar alcohol to the reaction product obtained in step (1) and conducting the second preliminary reaction;
- and
- (3) adding further basic catalyst to the reaction product obtained in step (2) and conducting the main reaction under reduced pressure,
- wherein the addition amount of the anhydrosugar alcohol is 46 to 94 parts by weight and the addition amount of the diol other than anhydrosugar alcohol is 6 to 54 parts by weight, based on total 100 parts by weight of the sum of the anhydrosugar alcohol and the diol other than anhydrosugar alcohol.
Dependencies are inferred from the claim text.