| 摘要 |
PROBLEM TO BE SOLVED: To provide an aq. emulsion and an expanded sheet obtained therefrom which do not use vinyl chloride at all, and have excellent flame retardancy, mechanical strengths, folding resistance, antiblocking ability, expandability, embossability, and workability, and have uses in wallpapers and so on. SOLUTION: An aq. emulsion compsn. contains the following components (A) to (C): (A) an aq. emulsion of a copolymer consisting of 5-35 wt.% of (a1) ethylene and 95-65 wt.% of (a2) vinyl esters contg. as the vinyl esters 10-60 wt.% of vinyl versatate and/or 2-ethylhexyl acrylate and having a Tg from -25 to 15 deg.C; (B) thermally expandable, hollow fine spheres; and (C) an inorganic filler, with the component (B) content being of 5-50 pts.wt. relative to 100 pts.wt. (solid content base) of the component (A), and the component (C) content being of 50-350 pts.wt. An expanded sheet is obtained by using the said compsn.
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