发明授权
- 专利标题： Method of dry cleaning using lipophilic cellulose sponges
- 专利标题（中）： 干燥清洁使用脂肪纤维素海绵的方法
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申请号： US31710472申请日： 1972-12-21
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公开(公告)号： US3874849A公开(公告)日： 1975-04-01
- 发明人: TENG JAMES , STUBITS MARCELLA C
- 申请人： ANHEUSER BUSCH
- 专利权人： Anheuser Busch
- 当前专利权人： Anheuser Busch
- 优先权： US31710472 1972-12-21; US22039372 1972-01-24; US44776474 1974-03-04
- 主分类号： A47L13/16
- IPC分类号： A47L13/16 ; B01D17/02 ; C02F1/68 ; C08B3/10 ; C08J9/36 ; C11B13/00 ; D06L1/02
摘要：
This disclosure concerns a method of dry cleaning using a cellulose fatty acid ester sponge which picks up oil and nonpolar solvents. The sponge has a bulk density of 0.02g/cm3 to 0.06g/cm3 and the degree of substitution of the cellulose is 1.5 to 2.9. The sponge is made by reacting a cellulose sponge with fatty acid derivatives, specifically lauroyl chloride, under controlled conditions. The esterified sponge has a bulk density of 0.5-3g/cm3.
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