GLUEING COMPOSITION Russian patent published in 1995 - IPC

FIELD: glueing materials. SUBSTANCE: method involves the use of copolymer of styrene and piperylene with the content of bound styrene 91-93 mole% and additional content of pine colophony, colophony esterified with glycerol prepared on 40 wt.-% diphenylguanidine, 2,2-dibenzthiazole disulfide, zinc oxide and magnesium oxide. Glueing composition has, mas. p.: polychloroprenic rubber 100; butylphenolformaldehyde resin 90-110; copolymer of styrene with piperylene 1-6; colophony esterified with glycerol prepared on 40 wt.-% 1-3; pine colophony 1-3; diphenylguanidine 0.5-1.5; 2,2-dibenzthazole disulfide 1.5-2.5; zinc oxide 4-6; magnesium oxide 10-14, and organic solvent 300-700. EFFECT: increased glueing strength of ferrite article for break-off (up to 8,3 kg/cm² after 72 h), shortened period of hardening. 2 tbl