Resin having a catalyst for reactive adhesion to a polyester

US11945945B2 · kind B2 · utility

Assignees

• DOW GLOBAL TECHNOLOGIES LLC · US
• Regents of the University of Minnesota · US

Inventors

• Kunwei Liu · Maplewood, US
• Alex M. Jordan · Menomonie, US
• Christopher John Ellison · Austin, US
• Christopher W. Macosko · Minneapolis, US
• Christopher M. Thurber · Midland, US
• Wenyi Huang · Midland, US
• Thomas H. Peterson · Charleston, US

Key dates

• Filing date: May 22, 2019
• Grant date: Apr 2, 2024
• Expiry date: Apr 8, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2207/066
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A resin including up to 99.99 weight percent (wt. %) of a first polyolefin grafted with a functional group selected from an ethylenically unsaturated carboxylic acid, a carboxylic acid anhydride, an ester functional group or a combination thereof; and 0.01 to 3.0 wt. % of a tin oxide-based catalyst, where the resin includes 0.2 wt. % to 1.5 wt. % of the functional group from the first polyolefin, the wt. % based on a total weight of the resin. The first polyolefin can be selected from a polyethylene, a polypropylene, an ethylene/alpha-olefin copolymer, a propylene/alpha-olefin copolymer and combinations thereof. The tin oxide-based catalyst can be selected from dibutyltin oxide, dioctyltin oxide and combinations thereof. The resin can be used in a multilayer structure, where a Layer A comprises the resin and a Layer B comprises a polyester, where a first major surface of Layer A is in adhering contact with the second major surface of Layer B.