| 摘要 |
PURPOSE: Provided is a composite antifogging agent for agricultural EVA(ethylene vinyl acetate) film which shows the compatibility with resin, initial antifogging property, long-term antifogging property, and the prevention of whitening. CONSTITUTION: The composite antifogging agent is produced by mixing a reaction product(A) obtained by esterifying polyol and a high fatty acid of C10-C22 in a molecular weight ratio of 1.0:1.0-1.0:2.0; a reaction product(B) obtained by addition reacting the product(A) and an ethylene oxide in a molecular weight ratio of 1:1-1:7; and a condensate(C) of polyol-polyol, in a weight ratio of 80:10:10-40:30:30. The product(A) is a product obtained by esterifying a sorbitol and a palmitic acid. |
