Hot melt adhesive compositions having good adhesion on both polar and nonpolar substrates

US8865822B2 · kind B2 · utility

Assignee

• SIKA TECHNOLOGY AG · CH

Inventors

• Kai Paschkowski · Jork, DE
• Doreen Janke · Leck, DE

Key dates

• Filing date: Jun 18, 2012
• Grant date: Oct 21, 2014
• Expiry date: Aug 25, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31573
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A hot melt adhesive composition including a) at least one thermoplastic silane grafted poly-α-olefin that is solid at 25° C.; and b) at least one reaction product of a polyisocyanate having an isocyanate-reactive silane, wherein the isocyanate-reactive silane includes exactly one group reactive to an isocyanate group, selected from a hydroxyl group, a mercapto group, and an amino group, and wherein the reaction product includes a molecular weight Mw of less than 1500 g/mol.