COMBINATION OF SUBSTITUTED CYCLODEXTRIN COMPOUND AND ACTIVATED CARBON

摘要

The invention is a composition that can prevent formation in, or scavenge undesirable organic materials from, a polymer matrix. The composition contains cyclodextrin and particles of activated carbon. The composition can scavenge thermal decomposition products that can be produced during melt processing of a polymer, contaminants inherent in a polymer, or other types of impurities from a polymer matrix that otherwise may elute into the air, a water supply, or an ingestible material such as a food, a drug, or a beverage. Other aspects of the invention are blends of the composition with polymeric materials, methods of making blends, articles containing the composition, and methods of making articles containing the composition.

主权项

1. A method of making a polyester composition, the method comprising
contacting water, activated carbon particles, and a methyl or acetyl substituted cyclodextrin compound having a degree of substitution of about 0.3 to 2.5, wherein the ratio of carbon to cyclodextrin in the contacted combination is about 1:2 to 1:40,000 by weight; maintaining the contact for a period of about 0.5 hours to 24 hours; filtering the contacted combination through a filter having pore sizes from about 10 nm to 100 μm to form a filtrate; and applying the filtrate to a thermoplastic polyester to form a polyester composition comprising cyclodextrin and activated carbon particles.