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    • 4. 发明申请
    • PRE-TREATMENT METHODS AND COMPOSITIONS FOR CARBON DIOXIDE DRY CLEANING
    • 用于二氧化碳干燥清洁的预处理方法和组合物
    • WO01006053A1
    • 2001-01-25
    • PCT/US2000/019790
    • 2000-07-20
    • D06L1/00D06L1/16B05D1/00C11D1/82C11D3/39C11D3/43D06L1/02
    • D06L1/00D06L1/16
    • A method for dry-cleaning articles such as fabrics and clothing in carbon dioxide. The article includes a stained portion or region, which is pretreated with a pretreatment composition prior to initiating the cleaning cycle. The pretreatment step is followed by contacting the pretreated article to be cleaned with a liquid dry cleaning composition for a time sufficient to clean the article. The liquid dry-cleaning composition comprises a mixture of carbon dioxide, a surfactant, and an organic co-solvent. After the contacting step, the article is separated from the liquid dry cleaning composition. The pretreatment composition, in a preferred embodiment, comprises at least one of (a) a surfactant; (b) d-limonene, and (c) a C12-C15 alkane co-solvent. Preferably the pretreatment composition comprises at least two, and in some particularly preferred embodiments, the pretreatment composition comprises all three, of the aforesaid ingredients.
    • 用于在二氧化碳中干燥诸如织物和衣服的物品的方法。 该制品包括染色部分或区域,其在开始清洁循环之前用预处理组合物预处理。 预处理步骤之后,将待处理的待处理制品与液体干洗组合物接触足够时间以清洁制品。 液体干洗组合物包含二氧化碳,表面活性剂和有机共溶剂的混合物。 在接触步骤之后,将物品与液体干洗组合物分离。 在优选实施方案中,预处理组合物包含以下中的至少一种:(a)表面活性剂; (b)d-柠檬烯,和(c)C12-C15烷烃共溶剂。 优选地,预处理组合物包含至少两种,在一些特别优选的实施方案中,预处理组合物包含所有三种上述成分。