Patent No. EP3850072 (titled "Silver Protection Agent") was filed by Claro Products on Sep 12, 2019. The application was issued on Jan 3, 2024.
A silver protective agent for detergents, particularly dishwashing detergents, that prevents discoloration of silver-containing products during washing. The agent comprises bismuth citrate, a degradable carboxylate or phosphonate, and a salt of methylglycinediacetic acid, which are combined to provide effective protection against silver oxidation and discoloration while being biodegradable and environmentally friendly.

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