Patent ID: 7645506
Filing Date: 2010-01-12
Classification: G21F,Y10T

Abstract:
1. A radiation protection material for shielding X-rays and/or gamma rays made from a multi-layer material in which radiation-absorbing particles are dispersed, the protection material comprising: at least one carrier layer; and a radiation absorbing layer, said radiation-absorbing layer comprising 10 to 20 weight % of a polymer preparation and 80 to 90 weight % of said radiation-absorbing particles, said polymer preparation comprising a PVC plastisol mixed with a liquid rubber component prior to hardening thereof and containing between 20 and 40 weight % PVC polymer and 10 to 35 weight % liquid rubber, said radiation absorbing particles containing 55 to 75 weight % tin powder, 0 to 30 weight % bismuth, 0 to 10 weight % barium and/or 0 to 20 weight % tungsten and/or oxides and salts of these metals and mixtures thereof, said radiation absorbing layer being integrally connected to said at least one carrier layer by cross-linking said absorbing layer to said carrier layer and by thermosetting of said absorbing layer on said carrier layer to form the multi-layer material.