| abstract |
The invention relates to a curable polysulfide composition, which has an application in making a preserving coating, and an insulator in the field of road construction, house building, etc. The target of the invention is to obtain a stable polysulfide curable composition for which the cure rate and the cure velocity are independent of the surrounds, to allow the obtaining of vulcanized material with high grade of technical and ecological parameters, avoiding the typical unpleasant smell of mercaptane polysulfides and the toxicity of the curing agents, additives and fillers. The problems is solved using the following curable polysulfide composition: polysulfide polymer and/or copolymer containing up to 1 mol/kg SH groups, with molecular weight from 2,000 to 200,000, polysulfide degree from 2.2 to 4.0, ramification rate up to 4 mol percent and degree of polymerization of 20 to 500 in an amount of 90 to 110 pbw; modifier up to 75 pbw; curing agent from 0.2 to 20 pbw; polar solvent or reagent u to 25 pbw; acceptor from 5 to 50 pbw; fillers and other additives up to 150 pbw. |