发明名称 |
VERFAHREN ZUR VERRINGERUNG VON WASSERLÖSLICHEM CRVI IN ZEMENTEN UND/ODER ZEMENTHALTIGEN ZUBEREITUNGEN. |
摘要 |
<p>The invention relates to a method of reducing the allergy-inducing (allergenic) activity of water-soluble Cr<VI> in cements and/or cement-containing preparations, which comprises selecting in preliminary experiments a lignosulphonate from the multiplicity of lignosulphonates available on the market which reduces, in the desired manner, the water-soluble Cr<VI> content on exposure of a cement and/or a cement-containing preparation to water, and adding this selected lignosulphonate to cements and/or cement-containing preparations prior to or during the addition of water in the production of fresh cement mixtures.</p> |
申请公布号 |
AT148434(T) |
申请公布日期 |
1997.02.15 |
申请号 |
AT19940108800T |
申请日期 |
1994.06.08 |
申请人 |
DYCKERHOFF AKTIENGESELLSCHAFT |
发明人 |
RUDERT, VOLKHART, DR. RER. NAT.;JUNG, MICHAEL, DR. RER. NAT.;ALTER, GABRIELA, DIPL.-CHEM. |
分类号 |
A61K33/00;C04B14/28;C04B18/14;C04B22/04;C04B24/18;C04B28/04;(IPC1-7):C04B24/18 |
主分类号 |
A61K33/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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