Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1986-10-31
1988-03-15
Morgenstern, Norman
Compositions
Water-softening or purifying or scale-inhibiting agents
252 99, 252174, 252 91, 25218625, 25218635, 25218636, 25218637, 428403, 428407, C11D 1700, A01N 0000, B05D 302
Patent
active
047311959
ABSTRACT:
High efficiency encapsulation of core particles, particularly halogen bleaches, by (i) encapsulating the core particle in at least two separate coats wherein the melting point of the inner or first coating material is below the melting point of the outer or second coating material, (ii) heating the thus encapsulated particle to a temperature between the melting points of the inner and outer coating materials in order to liquefy the inner coat, and (iii) allowing the liquid inner coat to solidfy and form a continuous, nonporous encapsulating coating.
REFERENCES:
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patent: 3154494 (1964-10-01), Speak et al.
patent: 3703470 (1972-11-01), Brennan
patent: 3908045 (1975-09-01), Alterman et al.
patent: 3962106 (1976-06-01), Rubin et al.
patent: 3989635 (1976-11-01), Toyoda et al.
patent: 4078099 (1976-08-01), Mazzola
patent: 4110487 (1978-08-01), Rion
patent: 4136052 (1979-01-01), Mazzola
patent: 4327151 (1982-04-01), Mazzola
Weast, CRC Handbook of Chemistry & Physics, (CRC Press, Inc., Boca Raton, Fla.), c. 1982, pp. B-87, B-133, B-148.
Burke Margaret
Ecolab Inc.
Morgenstern Norman
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