Methyl acrylate-diamine based polyamide resins and processes for producing the same

US6667384B2 · kind B2 · utility

Assignee

• HERCULES LLC · US

Inventors

• Qu-Ming Gu · Bear, US
• Armin Michel · Wuppertal, DE
• Huai N. Cheng · Avondale, US
• William W. Maslanka · New Garden Township, US
• Ronald R. Staib · Wilmington, US

Key dates

• Filing date: Dec 27, 2001
• Grant date: Dec 23, 2003
• Expiry date: Dec 27, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G73/0286
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention contemplates poly(aminoamide) pre-polymers, polyamide polymers, a multi-step process for the synthesis of these pre-polymers and polymers using acrylates and at least one monomer containing at least two primary amines, and the resins resulting from the reaction of the polymers with an epihalohydrin. These resins may be used as wet strength resins and creping aids in the papermaking industry as well as surface additives for wool.