British Dyestuffs Corporation

Commercial Disperse Azo Dyes. The first proposal to use insoluble dyes in suspension in an aqueous foam bath, ie, disperse dyes, to dye cellulose acetate was in 1921 (60). Commercialization of disperse dyes began in 1924 with the introduction of the Duranol dyes by British Dyestuffs Corporation (61) and the SRA dyes by British Celanese Company (62). In contrast to the acid monoazo dyes, derivatives of benzene rather than of naphthalene are of the greatest importance as coupling components. Among these components mono- and dialkylariifines (especially A/-P-hydroxyethyl-and A/-(3-acetoxyethylanifine derivatives) are widely used couplers. Nitrodiazobenzenes are widely used as diazo components. A typical example is CeUiton Scarlet B [2872-52-8] (91) (Cl Disperse Red 1 Cl 11110). 

On March 16, 1920, the year that Robinson left Liverpool for what turned out to be one year with the British Dyestuffs Corporation in Manchester, the two friends both presented papers at a meeting of the Manchester Literary and Philosophical Society. Lapworth gave "alternating" polarity and the influence of a "key-atom" primary roles in initiating and determining the course of reaction. Robinson identified the activation of molecules with the rearrangement of valences "most probably synonymous with changes in position of the electrons," so that the active molecules are polarized and contain partially dissociated valences. 96... 

Lecturer on Organic Chemistry in The Royal Technical College, Glasgow i formerly of British Dyestuffs Corporation Ltd. 

Levinstein Ltd was merged, under government influence, with British Dyes Ltd to form the British Dyestuff Corporation Ltd71. 

In the 1920s Perkin continued to make his presence felt at Oxford. He maintained his reputation as the leading British organic chemist of his generation. He showed by personal example the overriding importance of research. As an effective research supervisor he attracted researchers and demonstrators from outside Oxford to work in the Dyson Perrins Laboratory where he was revered as Pa Perkin. He maintained his interest in industrial research British Dyes paid for an Oxford colony until 1925 and from 1923 to 1925 he was advisor to the research staff of the British Dyestuffs Corporation at Blackley, Manchester, which he visited almost weekly. 

British Anti-Lewisite (BAL), 191 British Association for the Advancement of Science (BAAS), 84-9,94,96, 102-3,107,115,117,119 British Dyes, 138,157-8 British Dyestuffs Corporation, 135, 157, 162,176 British Museum, 121 Broker, 259... 

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