Hydrolysis of silanes and surface treatment with t
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申请号：AU200324 284 1 申请日：20030620 公开号：AU200324 284 1A8 公开日：2004 0106
摘要：A process for silane hydrolysis, having a good degree of control of reaction rate and presenting mild conditions, comprises reacting together a silane having at least one hydrolysable group with water in the presence of a catalyst comprising a rare earth metal salt with a non-nucleophilic ligand. The ligand is selected from trifluoromethanesulfonate, perchlorate, oxalate, acetate and other alkanoate having a chain length of from 2 to 10 carbon atoms, hexafluoroacetylacetonate and acetylacetonate, with triflate as the preferred ligand. The rare earth metal is preferably a lanthanide, especially lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, erbium, thulium or ytterbium. The hydrolysis product may be used in surface treatments of materials having a superficial oxide or hydroxide layer; in one aspect the hydrolysis is carried out in the presence of the surface to be treated. The process is also useful in the production of silicon-based gels such as solvogels and alcogels.
专利内容由知识产权出版社提供
专利名称：Hydrolysis of silanes and surface treatment with the hydrolysis product
发明人：ANTHONY VERNON CUNLIFFE,DAVID ARTHUR TOD,SIMON ANDREW TORRY
申请人：QINቤተ መጻሕፍቲ ባይዱTIQ LIMITED
更多信息请下载全文后查看
摘要：A process for silane hydrolysis, having a good degree of control of reaction rate and presenting mild conditions, comprises reacting together a silane having at least one hydrolysable group with water in the presence of a catalyst comprising a rare earth metal salt with a non-nucleophilic ligand. The ligand is selected from trifluoromethanesulfonate, perchlorate, oxalate, acetate and other alkanoate having a chain length of from 2 to 10 carbon atoms, hexafluoroacetylacetonate and acetylacetonate, with triflate as the preferred ligand. The rare earth metal is preferably a lanthanide, especially lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, erbium, thulium or ytterbium. The hydrolysis product may be used in surface treatments of materials having a superficial oxide or hydroxide layer; in one aspect the hydrolysis is carried out in the presence of the surface to be treated. The process is also useful in the production of silicon-based gels such as solvogels and alcogels.
专利内容由知识产权出版社提供
专利名称：Hydrolysis of silanes and surface treatment with the hydrolysis product
发明人：ANTHONY VERNON CUNLIFFE,DAVID ARTHUR TOD,SIMON ANDREW TORRY
申请人：QINቤተ መጻሕፍቲ ባይዱTIQ LIMITED
更多信息请下载全文后查看