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专利概况
专利名称 DIIOCYANATE-SCAVENGING PACKAGING LAMINATES
申请号 US16082432 申请日
公开(公告)号 US20190085159A1 公开(公告)日 2016-03-07
申请(专利权)人 发明人 James C Huang; Devanshu V Mehta
专利来源 国家知识产权局 转化方式
摘要

The present invention is directed to packaging laminates for containing a food or pharmaceutical/medical product which includes an exterior film, a multilayer interior film comprising a diisocyanate-scavenging layer and an adhesive-contact layer, and a polyurethane adhesive layer bonding the exterior film to the multilayer interior film. The present invention reduces the amount of any unreacted diisocyanate precursor and primary amines which can migrate to a product in packaging assemblies formed with a polyurethane adhesive. This is achieved when an interior film (commonly known as a sealant film) includes a layer comprising a non-polymeric polyol which is not in direct contact with the polyurethane adhesive. With this approach, the nonpolymeric polyol reacts with any residual diisocyanate and/or primary amines which migrates from the polyurethane adhesive through the laminated assembly and thus, neutralizes any potential undesirable effects of these compounds.

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