| 摘要 |
FIELD: building industry. SUBSTANCE: invention relates to sealing composition used for sealing seams, junctions and looseness in transport agents. Sealing composition comprises the following components, wt.-%: butyl rubber, 7.5-17.0; ethylenepropylenediene rubber if necessary, 0-8.5; dye or pigment, 0.5; polybutene or polyisobutene as an oligomeric softening agent, 23-26; colophony resin "Gerlak" as product of colophony polymerization, 2-4; chalk, 22- 27; talc or kaoline, 21-24; highly dispersed amorphous silica, 8-10; thermoplastic IST-30 or DST-30r01 as adhesive addition, 0.7-1.0. EFFECT: improved gluing properties and ecological purity of composition. 2 tbl |
