Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1990-03-12
1991-06-25
Barr, Josephine
Compositions
Water-softening or purifying or scale-inhibiting agents
62114, 134 12, 134 31, 134 38, 134 39, 134 40, 252 67, 252 69, 252162, 252172, 252305, 252364, 252DIG9, 521131, 521 98, C11D 230, C11D 250, C23G 5028, C09K 504
Patent
active
050264974
ABSTRACT:
Azeotropic mixtures of perfluoro-1,2-dimethylcyclobutane, methanol and either 1,1-dichloro-1-fluoroethane or dichlorotrifluoroethane, are useful in solvent cleaning applications, and as refrigerants, aerosol propellants and polymer blowing agents.
REFERENCES:
patent: 2999815 (1961-09-01), Eiseman
patent: 2999817 (1961-09-01), Bower et al.
patent: 3578597 (1971-05-01), Eiseman, Jr.
patent: 3638786 (1972-02-01), Borecki et al.
patent: 3881949 (1975-05-01), Brock
patent: 3903009 (1975-09-01), Bauer et al.
patent: 4085518 (1978-04-01), Jackson et al.
patent: 4482465 (1984-11-01), Gray
Barr Josephine
E. I. Du Pont de Nemours and Company
Skaling Linda D.
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