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Odor free hydroxymethanesulfonic acid

阅读:311发布:2022-05-17

专利汇可以提供Odor free hydroxymethanesulfonic acid专利检索,专利查询,专利分析的服务。并且The preparation of odorless hydroxymethanesulfonic acid by reaction of equivalent amounts of sulfurous acid and paraformaldehyde is disclosed. This sulfur dioxide odor free sulfurous acid based substance is an excellent catalyst for the treatment of cellulose with N-methylol-type finishing agents to produce durable press properties. Its use offers several advantages over the use of hydroxymethanesulfonic acid prepared in situ in the pad bath by addition of sulfurous acid to react with the free formaldehyde present. Exact quantities of the catalyst can be dispensed and workers are not exposed to the discomfort and health hazard of the choking, noxious fumes of sulfur dioxide that are given off by sulfurous acid.,下面是Odor free hydroxymethanesulfonic acid专利的具体信息内容。

1. A PROCESS FOR THE PREPARATION OF HYDROXYMETHANESULFONIC ACID SOLUTION, FREE OF NOXIOUS, DISAGREEABLE SULFUR DIOXIDE ODORS, BY THE REACTION OF EQUIMOLAR QUANTITIES OF SULFUROUS ACID AND PARAFORMALDEHYDE.
2. The process of claim 1 wherein 2.3 parts of paraformaldehyde are dissolved at room temperature in 6.3 parts of sulfurous acid in sufficient water to give 8.4 parts of odor free hydroxymethanesulfonic acid.
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