Process of reacting reduced keratin with cross-linking polyimides or polyamides and chemically modified keratin containing the aforesaid crosslinkages

• US 2,850,351 A
• Filed: 08/19/1955
• Issued: 09/02/1958
• Est. Priority Date: 08/19/1955
• Status: Expired due to Term

• Current Assignee: Clay E. Pardo Jr, Joseph E. Moore
• Original Assignee: Clay E. Pardo Jr, Joseph E. Moore
• Inventors: Moore, Joseph E., Pardo, Clay E. Jr.
• Application Number:
  US03/529,598
• Time in Patent Office: 1,110 Days
• US Class Current: 530/357
• CPC Class Codes: A61K 2800/94 Involves covalent bonding to the substrate
• CPC Class Codes: A61K 8/4913 having five membered rings, e.g. pyrrolidone carboxylic acid
• CPC Class Codes: A61K 8/4966 Triazines or their condensed derivatives
• CPC Class Codes: A61K 8/88 Polyamides
• CPC Class Codes: A61Q 5/04 Preparations for permanent waving or straightening the hair
• CPC Class Codes: D06M 13/402 Amides imides, sulfamic acids

Claims

1. A METHOD OF CHEMICALLY MODIFYING A KERATINOUS MATERIAL WHICH COMPRISES REACTING THE KERATINOUS MATERIAL WITH AN AGENT CAPABLE OF REDUCING DISULPHIDES AND WITH A COMPOUND CONTAINING AT LEAST TWO ACYL-NITROGEN GROUPS, EACH ACYL RADICAL CONTAINING AN OLEFINIC LINKAGE BETWEEN TWO CARBON ATOMS, AT LEAST ONE OF THESE CARBON ATOMS BEING DIRECTLY LINKED TO A NON-OXO CARBONYL GROUP OF THE SAID ACYL-NITROGEN GROUPS.