| abstract |
1478367 Adhesive compositions based on epoxymethacrylates LEE PHARMACEUTICALS 7 Aug 1974 [7 Aug 1973] 34865/74 Heading C3P A rapid setting adhesive composition which is a viscous liquid or paste contains (A) 10- 80% of an ester of methacrylic acid and a mono-alcohol containing at least one epoxy group, (B) 20-90% of a finely divided filler which is organic, inorganic or a mixture thereof and is insoluble in the conditions under which the adhesive is used, (C) an aliphatic and/or aromatic dimethacrylate, (D) up to 5% of a peroxide catalyst and (E) an accelerator, the percentages being based on the combined weight of (A) and (B) and may optionally contain up to 1 % by weight of an inhibitor. The composition may be in the form of a 2 component pack and may be used for bonding plastics to each other or to metals or for mending glass or china or fingernails. The compositions exemplified contain glycidylmethacrylate or 3,4-epoxybutyl methacrylate, one or more of polymethylmethacrylate, polyethylmethacrylate, a copolymer of methyl- and ethylmethacylate and silica; the dimethacrylate of ethylene glycol, di- or tri-ethyleneglycol or bisphenol A; benzoyl peroxide; N,N-bis-(hydroxyethyl)- paratoluidine or dimethylaniline either t-butylhydroxytoluene or hydroquinone; and methyl methacrylate in one example. |