| 摘要 |
<p>Adhesive composition for articles made of (meth)acrylic (co)polymer (A) comprising 80-100 wt.% of methyl methacrylate monomer and 0-20 wt.% of at least one ethylenically unsaturated monomer which is copolymerisable with the methyl meth acrylate. The composition comprises 45-90 wt.% 1,3-dioxolane, 2-25 wt.% of formic acid or mono-, di- or tetraglyme, 2-30 wt.% dissolved (meth)acrylic (co)polymer (B) and 0-40 wt.% of organic diluting additives. Also claimed is an article containing a joint obtained using the claimed composition. Preferably the composition comprises 60-85 wt.% of 1,3-dioxolane, 3-20 wt.% of formic acid or mono-, di- or tetraglyme, 10-16 wt.% of dissolved (meth)acrylic (co)polymer and 10-40 wt.% of diluting organic additives. The organic additives are selected from ketones, ethers, alcohols, or ester solvents of the copolymer (A), especially methylethylketone, methylisobutylketone, acetone, alcohol diacetone, dimethoxymethane, methyl acetate, ethyl acetate, butyl acetate, isobutyl acetate, methyl phthalate, ethyl formate and butanol. The dissolved (co)polymer (B) is methyl polymethacrylate or a copolymer of methyl polymethacrylate and at least one alkyl acrylate monomer where the alkyl group contains 1-10C and has a weight average molecular mass of less than 1000000, preferably 500000-1000000 and especially 500000-700000.</p> |
