11-12-1997 дата публикации
Номер: CA0002256334A1
Принадлежит:
An original method to produce polymeric products is described, which after a special cross-linking become macroplegmatic and acquire ability to absorb organic solvents, petrol and petroleum and products which are released in the water basins or on the sea, 40-80 gram of oily matter/gram of polymer. The polymers to process are Polystyrene, trimeric copolymer with Styrene, Ethylene, Butadiene SEBS and hydrogenated to saturation elastomers SBR with Styrene 10 %, 20 % and 40 % wich are processed by special cross-linking in chlorinated solvents with cross-linking agent the 1,4 dichloromethyl -2,5 dichloro benzene (DCDMDB) and with catalyst the Titanium Tetrachloride (Ti Cl4) where at 60~ is formed a thick cross-linked mass which is cut in a minced machine and is subjected to dry from solvent and to deodorise after heating at 170~ with stirring, under vacuum. Those products are brought in a net, in a polypropylene net and are swept on the surface of harbours and on the surface of sea collecting ...
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