Influence of retarders on the hydration of clinker and cement Information about the working mechanism of phosphonic acid (2-phosphonobutane 1,2,4-tricarboxylic acid, PBTC), tetrapotassium
pyrophosphate and sucrose. [16 pages, 768 kB, PDF] Hrsg.: Jörg Rickert
Commercial Cellulose Ethers(German) Information on the composition of modified cellulose ethers, extracted from patent literature. Hrsg.: Andrea Glatthor, 2003