Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing
Patent
1993-09-23
1994-05-17
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Silicon containing
556450, 556453, C07F 708
Patent
active
053129474
ABSTRACT:
Siloxanes are purified by contacting siloxanes containing ionic crystals as an impurity with a polar solvent, evaporating the solvent, thereby increasing the mean particle size of the ion crystals, and removing the ion crystals from the siloxanes by filtration. The method enables brief, efficient purification of siloxanes in high yields, offering siloxanes having a minimal content of ionic crystals.
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patent: 4661612 (1987-04-01), George et al.
patent: 4774346 (1988-09-01), Imai et al.
patent: 4962221 (1990-10-01), Huntress et al.
patent: 5245067 (1993-09-01), Schneider et al.
Furuya Masaaki
Maruyama Masao
Sato Makoto
Suzuki Masaru
Tsukuno Akihito
Shaver Paul F.
Shin-Etsu Chemical Co. , Ltd.
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