[6] David Yule continued to hold the title of Chairman but had no active part in the operations of the business.

[8] With the acquisition of Revertex Chemicals in 1980,[7] Thomas Catto's son, Stephen (1923–2001) started to turn Yule Catto & Co. into an international speciality chemicals and building products manufacturer.

[10] In July 2019, Synthomer announced that it was going to buy OMNOVA Solutions for an enterprise value of $824 million;[11] the transaction was completed on 2 April 2020.

[12] In October 2021, Synthomer announced the acquisition of Eastman Chemical adhesive activities for $1 billion.

[13] It included a former Hercules factory with 230 employees in Middelburg, the Netherlands, that produced about 80 different synthetic resins.