Syntactic polyurethane elastomers based on low unsaturation polyols for use in subsea pipeline insulation

US10301481B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Mikhail Y. Gelfer · Rua Engenheiro Marcondes Ferraz, US
• Amber Stephenson · Lake Jackson, US
• Venkat S. Minnikanti · Pearland, US
• Mark W. Brown · Downey, US
• Kamesh R. Vyakaranam · Pearland, US

Key dates

• Filing date: Oct 21, 2014
• Grant date: May 28, 2019
• Expiry date: Oct 21, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Syntactic polyurethane elastomers are made using a non-mercury catalyst. The elastomer is made from a reaction mixture containing a polyether polyol having a low amount of terminal unsaturation, a chain extender, a polyisocyanate and microspheres. The elastomer adheres well to itself, which makes it very useful as thermal insulation for pipelines and other structures that have a complex geometry.