Aliphatic alpha, omega-diamine compounds and their use in hair dyeing

  • US 5,114,429 A
  • Filed: 09/06/1989
  • Issued: 05/19/1992
  • Est. Priority Date: 09/06/1988
  • Status: Expired due to Term
First Claim
Patent Images

1. N,N'"'"'-Bis(β

  • -hydroxyethyl)-N,N'"'"'-bis(4'"'"'-aminophenyl)-1,3-diamino-2-propanol or one of its addition salts with acids.

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