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Применить Всего найдено 4. Отображено 4.
28-01-1996 дата публикации

PROCESS OF RECOVERING SILVER FROM PHOTOGRAPHIC SOLUTIONS

Номер: CA0002140567A1
Автор: SZEMBROT ALBERT R, CHRIST CHARLES S JR, SZEMBROT, ALBERT R., CHRIST, CHARLES S., JR.
Принадлежит:

A process for removing silver from a silver containing photoprocessing solution, comprising the steps of: a) mixing a mercapto-s-triazine, or a water soluble salt thereof, with the solution thereby causing formation of a mixture of i) precipitates and fines of silver mercapto-s-triazine and ii) the solution; b) mixing a copolymer flocculant with the mixture thereby causing flocculation and agglomeration of the silver TMT fines; wherein the copolymer i) consist of monomers selected from the group consisting of acryloyloxyethyl trimethylamine chloride and acrylamide and ii) has a reduced viscosity of 21 to 30 dL/g.

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Номер записи: 1
06-01-1999 дата публикации

METHOD FOR RECOVERING METAL SILVER AND MERCAPTO-S-TRIAZINE

Номер: JP0011001726A
Автор: CHRIST JR CHARLES S, SZEMBROT ALBERT R, CIAMARRA ROBERT
Принадлежит:

PROBLEM TO BE SOLVED: To recover metal silver and mercapto-s-triazine by adding a reducing agent such as NaBH4 to a slurry of a silvermercapto-s-triazine precipitate having a specified pH to form a metal silver precipitate and a mercapto-s- triazine soln. by reduction. SOLUTION: Trimercapto-s-triazine is added to a photographic processing soln. to prepare a slurry of a silver-mercapto-striazine precipitate having about >pH 5. About 0.75M NaBH4 as a reducing agent is added to the slurry and the slurry is treated at about 55-60°C to form a relatively high purity metal silver precipitate and a mercapto-s-triazine soln. The solid silver is separated from the soln. and the soln. is reutilized by adjusting the level of mercapto-s- triazine and the pH. The cost of recovery of silver can be reduced. COPYRIGHT: (C)1999,JPO ...

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Номер записи: 2
13-02-2001 дата публикации

Method and apparatus for pasteurizing fluids

Номер: US0006186681B1
Автор: Albert R. Szembrot, Charles S. Christ, Daniel C. Davis, SZEMBROT ALBERT R, CHRIST CHARLES S, DAVIS DANIEL C, SZEMBROT ALBERT R., CHRIST CHARLES S., DAVIS DANIEL C.
Принадлежит: Eastman Kodak Company, EASTMAN KODAK CO, EASTMAN KODAK COMPANY

A thermoelectric Peltier heat transfer device is used to treat a fluid, such as a photographic processing solution to reduce or prevent biogrowth. The device include both hot and cold sides that are in direct fluid flow communication so that the same fluid is treated on both sides of the device. The treated fluid is subjected to flash pasteurization on the hot side of the device, and immediately and rapidly cooled on the cold side without loss of volume. Thus, the same fluid is treated on both sides of the heat transfer device in a closed system before being returned to desired chemical, photographic or other processes.

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Номер записи: 3
13-02-1996 дата публикации

RECOVERING METHOD OF SILVER FROM PHOTOGRAPHIC SOLUTION

Номер: JP0008040721A
Автор: SZEMBROT ALBERT R, CHRIST JR CHARLES S
Принадлежит:

PURPOSE: To recover silver from a silver containing photographic soln. by precipitating silver by the addition of mercapto-s-triazine to the soln. and mixing a copolymer flocculant to cause flocculation and agglomeration of the silver TMT fines. CONSTITUTION: A mercapto-s-triazine is selected from the substances having the formula [R is H, NH4, OH, a 1-8C alkyl, 1-8C alkoxy, phenyl, cyclohexyl, oxadienyl, phenoxy, NR'2 or SR" (here R' is H, a 1-8C alkyl, phenyl, cyclohexyl, naphthyl or benzyl: R" is a 1-8C aryl, phenyl, cyclohexyl, naphthyl or benzyl) m is 1-3, n is 0-2]. The copolymer contg. 4-27 mol.% acrylolyloxyethyl trimethylamine chloride is used for the soln. with a low silver concn. (≤1 g/L). The 0.1-7 mol.% copolymer is used for the soln. with a high silver concn. (1-15 g/L). COPYRIGHT: (C)1996,JPO ...

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Номер записи: 4