Crosslinkable bioplasticizers

摘要

A crosslinkable bioplasticizer is disclosed, a mixture of an epoxy-functional bio-derived plasticizer and an aromatic dianhydride. When heated, the mixture crosslinks, which can be accelerated by the addition of a Lewis Acid metal catalyst. The crosslinked bioplasticizer can be melt compounded into a thermoplastic resin or can be formed in situ in the thermoplastic resin. The crosslinking of the bioplasticizer can reduce blooming of the bioplasticizer to the surface of a plastic article made by extrusion, molding, calendering, or thermoforming techniques.

主权项

1. A crosslinkable bioplasticizer mixture, comprising:
(a) an epoxy-functional bio-derived plasticizer, (b) an aromatic dianhydride, present in an amount from about 1 to about 50 parts per one hundred parts of the epoxy-functional bio-derived plasticizer, and (c) butyl tin tris (2-ethyl hexanoate) catalyst, wherein the epoxy-functional bio-derived plasticizer comprises one or more monoesters or one or more multiesters of epoxidized vegetable oils or combinations thereof, wherein when heated, the mixture crosslinks to form a crosslinked bioplasticizer more rapidly than the mixture crosslinks without the presence of the catalyst.