Compositions comprising alkoxysilane-containing isocyanates and acid stabilisers

US9593135B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Emmanouil Spyrou · Schermbeck, DE
• Manfred Kreczinski · Herne, DE
• Holger Loesch · Herne, DE
• Andrea Thesing · Ahaus, DE
• Lars Hellkuhl · Gescher, DE

Key dates

• Filing date: Sep 25, 2013
• Grant date: Mar 14, 2017
• Expiry date: Sep 25, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/718
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a composition comprising (A) an isocyanate of formula (I) OCN-A-SiR1R2R3 (I), wherein A is straight-chain, branched, substituted and/or unsubstituted aliphatic hydrocarbyl of 1 to 12 carbon atoms or substituted or unsubstituted cycloaliphatic hydrocarbyl of 4 to 18 carbon atoms, wherein R1 is selected from the group comprising —O—Ralk, wherein R2 and R3 are each independently selected from the group of substituents comprising —Ralk and —O—Ralk, and wherein —Ralk is hydrocarbyl of 1 to 6 carbon atoms, and B) a Bronstedt or Lewis acid or a compound which releases a Bronstedt or Lewis acid at room temperature; and also to a process for producing a stabilized alkoxysilane-containing isocyanate comprising the step of adding a Lewis or Bronstedt acid or a compound which releases a Bronstedt or Lewis acid at room temperature to an alkoxysilane-containing isocyanate.