WATER-DISPERSION GLUE COMPOSITION Russian patent published in 2004 - IPC

FIELD: adhesives.

SUBSTANCE: invention relates to glue compositions based on aqueous dispersions of acrylic copolymer for gluing paper, plywood, veneer sheet, woof, and cardboard with the same or different materials taken in any combination, and also for gluing to a variety of substrates: concrete, plaster, wood (chipboard, fiberboard, plywood), and dyed materials. Composition of invention comprising aqueous dispersion of acrylic copolymer as film-forming substance and thickener is characterized by further containing (at specified ratio of components) antifreeze: ethylene glycol or diethylene glycol, or di(2-ethylhexyl) sebacate; coalescent additive: ethyl cellosolve; biocide additive: solution of derivatives of isothiazoline, 1,2-(hydroxy)-5,8,11-trioxadodecane, 1,3-bis(hydroxymethyl)urea, and 1,6-dihydroxy-2,5-dioxahexane; and water; and by that above-mentioned film-forming substance is 40-60% aqueous dispersion of butyl acrylate/methyl methacrylate/methacrylic acid (35-55 : 40-60 : 0.5-3) copolymer; and thickener is association-type acryl urethane thickener if sodium carboxymethylcellulose. Moreover, composition can contain colophony ether solution in amounts up to 20% and 25% aqueous ammonia solution in amounts up to 0.5%.

EFFECT: enabled preparation of glue composition with high adhesive strength, high waterproofness, and frost resistance characterized by expanded application possibilities.

3 cl, 2 tbl, 16 ex