Lavatory cleaning block

Details Lavatory cleaning block Lavatory cleaning block

1992-10-19

1995-03-07

Lieberman, Paul

Compositions

Electrolytes for electrical devices

252 95, 252102, 252174, 25217425, 252176, 422 37, 210754, C11D 1700

Patent

active

053955463

ABSTRACT:
A toilet cleaning block which releases a halogen disinfecting agent in a controlled, substantially constant rate for 2 to about 4 months of constant contact with water and is then completely dissolved in the water comprises an admixture of an agent which releases a halogen disinfecting agent when in contact with water, about 4 to 10% aluminum hydroxide based on the total weight of the block and up to about 1% by weight of a mold release lubricant, said admixture being in the form of a coherent solid resistant to internal water penetration having a density of 1.10 to 1.60 g/cc, a ratio of effective surface area to weight of about 1:1.05 to 1:1.25 and a crush fracturing strength of about 9-109 kg.

REFERENCES:
patent: 3412021 (1968-11-01), Paterson
patent: 4532330 (1985-07-01), Cole
patent: 4537697 (1985-08-01), Girard
patent: 4560766 (1985-12-01), Girard et al.
patent: 4654424 (1987-03-01), Girard et al.
patent: 5178787 (1993-01-01), Hung et al.
patent: 5205955 (1993-04-01), Bunczk et al.

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