Fluorocarbon-grafted polysiloxanes

US7476714B2 · kind B2 · utility

Assignee

• E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

• Martial Pabon · Strasbourg, FR
• Romain Severac · Aubergenville, FR
• Emmanuel Puchois · Paris, FR
• Matthieu Perdon · Seraincourt, FR

Key dates

• Filing date: May 19, 2005
• Grant date: Jan 13, 2009
• Expiry date: Jun 28, 2026

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A composition useful to provide oil repellency, water repellency, and stain resistance to substrates comprising a polymer prepared by contacting a polyfluoroalkyl sulfonyl halide with a compound of Formula II, III or IV(E-(O)q)3Si—O—(Si(R2)2—O)m—[Si(R3—NHR4)(R2)O]n—Si—((O)q-E)3  Formula IIHR4N—R3—Si(R2)2—O—[Si(R2)2—O]m—[Si(R3—NHR4)(R2)O]n—Si(R2)2—R3—NHR4  Formula IIIHR4N—R3—Si(R2)2—O—[Si(R2)2—O]m—Si—((O)q-E)3  Formula IVwherein