Polyurethane with polyether and polyester blocks and alkoxysilane end group

US8906192B2 · kind B2 · utility

Assignee

• BOSTIK SA · FR

Inventors

• Olivier Laferte · Compiègne, FR
• Stephane Fouquay · Mont-Saint-Aignan, FR
• Régis GUILLOTTE · Venette, FR

Key dates

• Filing date: Dec 21, 2011
• Grant date: Dec 9, 2014
• Expiry date: Apr 24, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J175/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Preparing a polyurethane with polyurethane-polyether and polyurethane-polyester blocks with at least 2 polyurethane-polyester end blocks joined to an alkoxysilane end group, by reaction of a polyether polyol (A) with a stoichiometric excess of an aliphatic diisocyanate (B), then reaction of the polyurethane formed with a stoichiometric excess of a polyester polyol, then reaction of the polyurethane formed with a stoichiometric amount of an isocyanatosilane (D); polyurethane formed by said method;