abstract |
1453428 Dyeable copolyester BAYER AG 29 July 1975 [2 Aug 1974] 31682/75 Heading C3R [Also in Division C2] A dyeable copolyester is prepared from dimethyl terephthalate, ethylene glycol and a dihydroxy sulphonate of formula in the presence of zinc acetate and antimony trioxide. |