Phenolic hydroxyl-containing resin by reacting epoxy resin with excess difunctional phenol and epoxidation thereof
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United States of America Patent
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Apr 4, 2000
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app pub date -
Feb 27, 1998
filing date -
Jul 4, 1996
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Abstract
A modified phenolic hydroxyl-containing resin having a low free difunctional phenol content and represented by general formula (1); a solid epoxy resin having an epoxy equivalent of 450 to 2,500 g/eq and prepared by epoxidizing the above resin; and another solid epoxy resin having an epoxy equivalent of 1,500 to 60,000 g/eq and a number-average molecular weight of 3,000 to 15,000 and prepared by reacting the above epoxy resin with a difunctional phenol compound. Resin compositions containing these resins have many applications as powder coatings and can paints. In formula (1), X represents a residue of a difunctional phenol compounds; X's may be the same or different; and n is the number of repeating units and is an integer of 0 or above. ##STR1##
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