PROBLEM TO BE SOLVED: To provide a hindered amino group-containing organic silicon compound which improves water resistance of a portion to be treated when an inorganic compound is treated, and can impart sustainable light resistance thereto, and to provide a composition containing the same.SOLUTION: A hindered amino group-containing organic silicon compound is represented by average composition formula (1) and has a weight average molecular weight in terms of polystyrene by gel permeation chromatography of 2,000-1,000,000. In formula (1), Rrepresents a hydrogen atom, a monovalent hydrocarbon group having 1 to 8 carbon atoms or an alkoxy group having 1 to 8 carbon atoms; Ris a divalent hydrocarbon group which has a part of carbon atoms that may be substituted with a hetero atom, is substituted or unsubstituted, and has 1 to 8 carbon atoms; Rand Reach independently represent a monovalent hydrocarbon group having 1 to 8 carbon atoms; n represents an integer of 0-2; m represents an integer of 0-3; and a and b are numbers satisfying a relationship of 1a/b100.SELECTED DRAWING: None
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机译：解决的问题：提供含受阻的有机硅化合物，其在处理无机化合物时提高被处理部分的耐水性，并且可以赋予其可持续的耐光性，并提供包含该化合物的组合物。解决方案：含氨基的受阻有机硅化合物由平均组成式（1）表示，并且通过凝胶渗透色谱法测得的聚苯乙烯换算的重均分子量为2,000-1,000,000。式（1）中，R表示氢原子，碳原子数1〜8的1价烃基或碳原子数1〜8的烷氧基。 R 1为具有一部分可以被杂原子取代的碳原子的被取代或未被取代的二价烃基，并且具有1至8个碳原子; Rand Reach独立地表示具有1至8个碳原子的一价烃基; n表示0-2的整数; m表示0-3的整数;和a和b是满足1 / b <100的关系的数字。
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