Process for insulating pipes

US5534299A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Norbert Eisen · Hanerau-Hademarschen, DE
• Lutz-Peter Godthardt · Leverkusen, DE

Key dates

• Filing date: May 30, 1995
• Grant date: Jul 9, 1996
• Expiry date: May 30, 2015

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2110/0083
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for insulating pipes comprises applying at least one layer of a polyisocyanurate plastic and then at least one layer of rigid polyurethane foam to a steel pipe. The foam is covered with an outer layer.