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US 5,480,926 AGranted
Blends of ultraviolet absorbers and polyesters
AssigneeEastman Chemical Company
InventorsDavid R. Fagerburg, Michael E. Donelson
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Abstract
This invention relates to a photo-stabilized polymer blend comprising: (a) at least one polyethylene terephthalate-based (PET) copolymer comprising 1,4-cyclohexanedimethanol, and (b) an ultraviolet absorber, at least one compound selected from the group consisting of cyclic imino esters.
Claims18
A photo-stabilized polymer blend comprising:
- (a) at least one polyethylene terephthalate-based copolymer comprising 1,4-cyclohexane-dimethanol, and
- (b) an ultraviolet absorber, at least one compound selected from the group consisting of cyclic imino esters represented by the following formula (I) ##STR14## wherein X.sup.1 represents 1,2-phenylene, 1,2-naphthylene, 2,3-naphthylene, a group represented by the formula (a) ##STR15## wherein R is --O--, --CO--, --S--, --SO.sub.2 --, --CH.sub.2 --, --(CH.sub.2).sub.2 -- or --C(CH.sub.3).sub.2 --, or a group represented by the formula (b) ##STR16## wherein R is as defined above, and n is 1, 2 or 3, and R.sup.1 represents a hydrocarbon residue having a valence of n.
Dependencies are inferred from the claim text.