Concentrated sulfuric acid-dye solution dyeing |
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| 申请号 | US3652200D | 申请日 | 1969-09-23 | 公开(公告)号 | US3652200A | 公开(公告)日 | 1972-03-28 |
| 申请人 | KAZUO MIYASAKA; | 发明人 | MIYASAKA KAZUO; | ||||
| 摘要 | Various types of fibers, especially fibers which can ordinarily only be dyed with some difficulty, are dyed in a relatively short period of time at a relatively low temperature by using a dye bath in which the dye is dissolved in concentrated sulfuric acid, and in which a buffering compound, such as an alkali salt of a weak acid, is preferably added. | ||||||
| 权利要求 | 2. The process of claim 1, wherein an alkali salt of a weak inorganic or organic acid of more than 40 percent concentration by weight of solution buffering compound is added to the dye bath. 3. The process of claim 1, wherein the dye bath is maintained at a temperature of up to about 70* C. 4. The process of claim 1, wherein sodium citrate or sodium tartarate is added to said dye bath containing the sulfuric acid and the inorganic buffering compound. 5. A process for quick dyeing which comprises preparing a dye bath by dissolving into sulfuric acid of more than 60 percent concentration, a dye which is soluble and non-reactive with said acid, 26 passing a fiber or film through said dye bath whereby the film is diffused into the internal structure of said substance, wherein said dye bath is maintained at a temperature of up to about 70* C., contacting said treated fiber or film with water or an alkali solution so as to generate sufficient thermal energy to fix the dye into the internal structure of the fiber or film, washing and drying said fiber or film. |
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| 说明书全文 | |||||||
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