| 摘要 |
PCT No. PCT/DK90/00213 Sec. 371 Date Feb. 12, 1992 Sec. 102(e) Date Feb. 12, 1992 PCT Filed Aug. 17, 1990 PCT Pub. No. WO91/02638 PCT Pub. Date Mar. 7, 1991.A method for removing, condensing and collecting propellants, e.g. chlorofluoro-carbons (CFCs) in an environmentally friendly manner from foam materials, e.g. insulant materials from old (discarded) refrigerators, district heating tubes and other materials for which the method is suitable.
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