METHOD OF REDUCING ACTIVITY OF WATER SOLUBLE ALLERGY CAUSING CrVI CONTAINED IN CEMENTS AND/OR CEMENT-CONTAINING PREPARATIONS

摘要

the solution concerns the method of reducing the effect of water-soluble cr.sup.vi.n.contained in the cement and / or preparations containing cement, causing airbag allergies, which lies in the fact that, in preliminary tests in a large number of lignin sulphonates which are on the marketselect ligninsulfonu00e1t which required manner reduces the content of water soluble cr.sup.vi.n.the addition of water to cement and / or preparations containing cementand the selection ligninsulfonu00e1t adds to the cementu016fm and / or preparations containing cement before or during the addition of water for the production of mixtures of cementu.u0155