(440g) EDTA Modified Polyol Polymers for Performance Improvement of Laminating Adhesives
AIChE Annual Meeting
2022
2022 Annual Meeting
Engineering Sciences and Fundamentals
Experimental Methods for the Study of Interfacial Phenomena
Wednesday, November 16, 2022 - 10:00am to 10:20am
However, SL laminating adhesive is mainly used for general performance application. Recently, silanes and phosphate adhesive promoters have been developed and used to upgrade the SL adhesive performance so the technology can be used for medium high performance packaging application, such as for packaging liquid food and aggressive food. However, silane based adhesion promoter results in potential pot life and shelf life issues due to the moisture sensitivity as well as food regulatory compliance risks; phosphate based adhesion promoter potentially has material shelf life concern.
In this work, we developed a new adhesion promoter technology based on EDTA dianhydride, which is used to modify the polyols coreactant. The generated EDTA-polyol polymer is used as adhesion promoter and applied to the solventless lamination system. The metalized film or foil adhesion and product resistance are significantly improved. Such inventive technology can upgrade the adhesive products from general performance to medium high performance application. US patents have been filed.