The present invention relates to an aqueous dispersion composition of fluororesin for coating comprising (A) fluororesin particles, (B) a nitrogen-free high boiling point polyol having a boiling point of at least 100° C. and containing at least 2 hydroxyl groups, (C) depolymerizable acrylic resin particles having a decomposition and vaporization temperature within a temperature range of up to the decomposition temperature of said fluororesin particles, (D) a nonionic surfactant, and (E) an aqueous medium, wherein the high boiling point polyol (B) and the depolymerizable acrylic resin particles (C) are respectively contained in an amount of 5 to 18 parts by mass and 5 to 25 parts by mass based on 100 parts by mass of fluororesin particles (A) and an oxidant and an amine-type solvent are not contained. This composition is an aqueous dispersion composition of fluororesin for coating, which has favorable storage stability, can be coated thickly, controls development of mud crack and can form a coating film in which cracking and coloring do not occur when baking. Also, the composition controls discharge of endocrine disrupter substances as much as possible.
本发明涉及一种用于涂层的
氟树脂水分散组合物,该组合物包括:(A)
氟树脂颗粒;(B) 无氮高沸点多元醇,其沸点至少为 100°C,且至少含有 2 个羟基;(C) 可解聚
丙烯酸树脂颗粒,其分解和汽化温度在所述
氟树脂颗粒的分解温度以下的温度范围内;(D) 无氮高沸点多元醇,其沸点至少为 100°C,且至少含有 2 个羟基。(C) 可解聚
丙烯酸树脂颗粒,其分解和汽化温度在所述
氟树脂颗粒的分解温度以下的温度范围内;(D) 非离子表面活性剂;以及 (E)
水介质、其中,高沸点多元醇(B)和可解聚
丙烯酸树脂颗粒(C)的含量分别为 5 至 18 份(质量分数)和 5 至 25 份(质量分数)(基于 100 份(质量分数)的
荧光素颗粒(A)),且不含氧化剂和
胺类溶剂。该组合物是一种用于涂层的
氟树脂水分散液组合物,具有良好的储存稳定性,可以厚涂,控制泥浆裂纹的发展,并能形成涂膜,在烘烤时不会出现裂纹和着色。此外,该组合物还能尽可能控制内分泌干扰物质的排放。