Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1990-11-29
1991-08-13
Lieberman, Paul
Compositions
Water-softening or purifying or scale-inhibiting agents
134 12, 134 31, 134 38, 134 39, 134 40, 203 67, 252162, 252170, 252364, 252DIG9, C11D 730, C11D 750, C23G 5028
Patent
active
050394436
ABSTRACT:
An azeotrope or azeotrope-like composition of 2,2-dichloro-1,1,1-trifluoroethane (HCFC-123) and methanol, the azeotropic mixture being useful in solvent cleaning application.
REFERENCES:
patent: 4816175 (1989-03-01), Lund
patent: 4816176 (1989-03-01), Lund
U.S. patent application Ser. No. 07/297,366 filed Jan. 17, 1988 (Case No. CH-1581).
E. I. Du Pont de Nemours and Company
Lieberman Paul
Skaling Linda D.
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