| 摘要 |
Polychloroprene, optionally modified with sulphur, is obtained having improved properties and light in color if, in the course of polymerization, from 1.5x10-2 to 4x10-4 mol of a tetraalkyl thiuramic disulphide per 100 g of monomer are added when from 56 to 74% of the monomer has been converted, and polymerization is then continued for a further conversion of from 3 to 10%.
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