利用STN标引特点快速获取聚羧酸减水剂最接近的现有技术

Quickly Obtain the Closest Existing Technology of Polycarboxylic Acid Water-reducing Agent by Using STN Indexing Characteristics

聚羧酸系减水剂多从单体组合、制备工艺等方面入手进行改进,由于这些单体是通用的,在专利审查中,通过关键词和/或分类号检索最接近的现有技术时容易出现较大的噪声,STN数据库具有独特的标引方式,使用STN数据库检索,可以准确表达单体的组合方式,快速获取聚羧酸系减水剂最接近的现有技术。基于此,通过实际检索案例展示上述特点。

Polycarboxylic water-reducing agents are mostly improved from the aspects of monomer combination and preparation process.Because these monomers are universal,it is easy to make big noise when searching the closest existing technology by keyword and/or classification number in patent examination.STN database has a unique indexing method.Using STN database to search can accurately express the combination of monomers,Quickly obtain the closest existing technology of polycarboxylic water reducer.This paper shows the above characteristics through actual retrieval cases.