C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/557.8
C07C 233/00 (2006.01) C07C 231/00 (2006.01)
Patent
CA 1128547
PROCESS FOR THE INTERCONVERSION OF CRYSTALLINE FORMS OF ETHYLENE BIS-STEARAMIDE ABSTRACT OF THE DISCLOSURE A process for preparing alpha and beta crystalline forms of N,N'-ethylene bis-stearamide (EBS). Heating of EBS at temperatures of 120°-160°C to melt the EBS results in formation of 95+%; alpha which when cooled to 40°C or less remains in the alpha state, but upon reheating to about 80°C results in 95+% conversion to the beta crystalline form. Heating of the alpha crystalline form at temperatures ranging from about 45-90°C for selected periods of time results in mixtures of alpha and beta.
354473
Franklin Lloyd C.
Rosen Marvin
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Franklin Lloyd C.
Rosen Marvin
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