发明名称 |
METHOD FOR DYEING POLYVINYLALCOHOL-BASED FILM USING SUPERCRITICAL FLUID |
摘要 |
A method for dyeing a polyvinyl alcohol-based film is provided to reduce the use amount of dyes, the amount of waste dyes, and the amount of wastewater, thereby suppressing the pollution of environment due to a dyeing process. A polyvinyl alcohol-based film is dyed by inputting the polyvinyl alcohol-based film and dyes dissolved in solvent into a reactor bath, and increasing an inner temperature and an inner pressure of the reactor bath to a supercritical fluid environment. The solvent is one selected from a group consisting of water, ethylene glycol, glycerol, dimethyl sulfoxide, formamide, and dimethyl formamide, or a mixture thereof. Further, 0.1-1.0 wt.% of the dyes are used based on 100 wt.% of the organic solvent. |
申请公布号 |
KR20080000347(A) |
申请公布日期 |
2008.01.02 |
申请号 |
KR20060058078 |
申请日期 |
2006.06.27 |
申请人 |
KOLON INDUSTRIES, INC.;KUMOH NATIONAL INSTITUTE OF TECHNOLOGY |
发明人 |
BAEK, SANG HYUN;PARK, SANG BONG;PARK, IL HYUN;CHOI, E JOON;JANG, JIN HO;PARK, KI SANG |
分类号 |
D06P1/52;D06P1/62;D06P3/58 |
主分类号 |
D06P1/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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