Curing retarder for plaster and the like, a plaster composition making use thereof and a method for producing such a curing retarder

摘要

Curing retarder for plaster and the like, whereby this curing retarder contains tartaric acid as an active component, characterised in that at least 50% of this tartaric acid consists of dried synthetic tartaric acid, whereby said quantity of synthetic tartaric acid has particles having such a size that they have a Gaussian distribution (C1-C2) whose average value (M1-M2) is situated at a particle size (P1-P2) which is smaller than 100 micron. <IMAGE>