Detoxification of lead paint

Details Detoxification of lead paint Detoxification of lead paint

1977-05-31

1978-09-05

Hoffman, James R.

Stock material or miscellaneous articles

Composite

Of natural gum, rosin, natural oil or lac

2604299, 2605135, 427333, 427417, 10628718, 10628725, C07C15506, B05D 310, B32B 900

Patent

active

041121910

ABSTRACT:
Lead paint can be extremely hazardous when ingested as a result of ionic lead, produced by the action of stomach acids, being subsequently absorbed into the blood stream. According to this invention, it has been found that certain metal salts of the dithiocarbamates of multifunctional amines are effective precipitants for lead ions. When ingested simultaneously with lead paint they precipitate the lead ion in a substantially insoluble and indigestible form and thereby prevent absorption of lead into the blood stream. The preferred compounds are: zinc pentaerythrityl tetrakis (dithiocarbamate), tetrasodium pentaerythrityl tetrakis (dithiocarbamate), disodium ethylene bis(dithiocarbamate), and zinc ethylene bis(dithiocarbamate). These materials can be included in a digestible coating which can be applied over lead based paints to effectively detoxify the lead paint.

REFERENCES:
patent: 2317765 (1943-04-01), Hester
patent: 2885416 (1959-05-01), Costabello et al.
patent: 3050552 (1962-08-01), Nemec et al.

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