Free radical initiator modified hot melt adhesive composition including functionalized polyethylene and propylene-alpha-olefin polymer

US8765851B2 · kind B2 · utility

Assignee

• H.B. Fuller Company · US

Inventors

• Richard A. Miller · Kingsport, US
• Kevin P. Davis · Woodbury, US
• Stephen M. Willging · Minneapolis, US
• Sharf U. Ahmed · Woodbury, US
• Timothy W. Roska · Lake Elmo, US

Key dates

• Filing date: Jun 21, 2012
• Grant date: Jul 1, 2014
• Expiry date: Dec 6, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J151/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A hot melt adhesive composition that includes a first copolymer that includes the reaction product of a functionalized polyethylene, a propylene-alpha-olefin polymer that includes at least 50 mole % propylene and has a viscosity of no greater than 10,000 centipoise at 190° C., a ratio of z average molecular weight (Mz) to number average molecular weight (Mn) (Mz/Mn) of greater than 20, and a ratio of Mz to weight average molecular weight (Mw) (Mz/Mw) of greater than 3.0, and a free radical initiator.