The chemical brothers: Competition and the evolution of the board interlock network in the German chemical industry, 1950-2015

Utilising a unique and original dataset on the board composition of the 35 largest German chemical producers over the 1950-2015 period, the article tracks the entire lifespan of the industry's reconstituted board interlock network. Regarding the network as a mechanism for controlling competition among its members, we consider changes in its strength over time. We find that a close-knit network came into existence in the 1950s, culminating in the 1970s and 1980s, after which it began to weaken. We highlight the importance of various meeting places for top-level directors from the chemical industry, including bank boards, and moreover introduce a novel measure that makes it possible to consider the significance of past ties to the strength of the network. Situating the findings in a wider political-economic context, we suggest that in important respects Germany's coordinated form of capitalism is likely to have been even more coordinated than has been recognised.