ADHESIVE COMPOSITION FOR ADHESION OF MATERIALS BEING OPTICALLY TRANSPARENT Russian patent published in 1997 - IPC

FIELD: radically polymerized adhesives which are intended for using as intermediate polymer layer at manufacturing of multilayer impact constructions in which optically transparent materials (silicate glass, organic glass, polyethylene terephthalate, polycarbonate and other) are used. SUBSTANCE: adhesive composition comprises (met)acrylic derivative of oligoether, radically polymerized monomer, initiator and allyl derivative of oligoether being additionally added. Said allyl derivative of oligoether has common formula I: where R¹ is (met)allyl; 3-allyloxy-2-hydroxypropyl(phthaloyl)allyloxycarbamoyl; R² is H; alkyl(C₁-C₆); (met)allyl; 3-allyloxy-2-hydroxylpropyl(phthaloyl); A is ; k= 0-30;l=1-50; m=0-20; x= 1-3; y= 1-3. Molar weight of mentioned above compound having formula I is 300-9000. Said adhesive composition comprises, w.p.: derivative of oligoether, 100; radically polymerized monomer, 40-120; allyl derivative having formula I, 5-60; initiator, 0.05-10. Proposed adhesive composition is characterized by simplicity of its production and accessibility of raw materials; glued articles has high adhesive, physical and mechanical properties within wide temperature range. EFFECT: higher specific breakage strain of adhesive layer, higher shearing stress of adhesive layer; improved impact resistance of glued articles, improved adhesive properties while retaining high optic characteristics. 3 cl, 5 tbl