SEPARATING PHENOL FROM PHENOL-WATER SUBAZEOTROPE BY TREATMENT WITH BRINE

摘要

Thermal insulation board is made by press moulding a mixt. of 100 pts. wt. spirally rolled pieces (I) of magnetic tape and 10-50 pts. wt. thermosetting resin as binder, (I) being obtd. by heating cut pieces of magnetic tape with lengths of up to 20 mm. Also claimed are frames for concrete shells made from this mixt. and a method for making boards suitable for these frames.