ADHESIVE ARTICLE AND METHOD OF MAKING THE SAME

摘要

Adhesive articles that include a substrate and a silicone adhesive are disclosed. The articles also include a polymer containing poly(propylene oxide) units and optionally poly(ethylene oxide) units and having a number average molecular weight of at least 1000 grams per mole. The polymer may either be incorporated into the substrate or may be used as a primer on the substrate. If the polymer includes poly(ethylene oxide) units, the copolymer typically has a weight ratio of poly(ethylene oxide) to poly(propylene oxide) of up to 3:1, or if the copolymer has a number average molecular weight of at least 10,000 grams per mole, the weight ratio of poly(ethylene oxide) to poly(propylene oxide) is up to 2:1. Methods of making the adhesive articles are also disclosed.

主权项

1. An adhesive article comprising:
a substrate comprising a polymer blend, the polymer blend comprising:
a polymer having a number average molecular weight of at least 1000 grams per mole, wherein the polymer is a poly(propylene oxide) or a copolymer of poly(ethylene oxide) and poly(propylene oxide), andat least one of a thermoplastic polyurethane or a thermoplastic polyester; and a silicone adhesive disposed on the substrate,wherein the copolymer has a weight ratio of poly(ethylene oxide) to poly(propylene oxide) of up to 3:1, with the proviso that if the copolymer has a number average molecular weight of at least 10,000 grams per mole, the weight ratio of poly(ethylene oxide) to poly(propylene oxide) is up to 2:1.