Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1979-01-05
1981-05-05
Welsh, Maurice J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 458N, 260 458NZ, 260 458SN, 2642902, C08K 534, C08K 535
Patent
active
042658047
ABSTRACT:
This invention relates to oriented polyester shaped, molded, or formed objects having improved ultraviolet stability and to a process for producing the same and to compositions used in making such objects. More particularly, the invention relates to an oriented linear polyester film, fiber, foils, sheets, and other shaped, molded, or formed objects prepared from polyester compositions containing multichromophoric ultraviolet stabilizers which when oriented provide objects having improved weatherability. Multichromophoric ultraviolet stabilizers are those stabilizers which contain two or more moieties which, if isolated from one another, absorb a portion of the ultraviolet spectrum between 280 nm and 400 nm or an aromatic ester comprised of one or more of the above moieties and which on absorption of light the ester rearranges to a moiety which absorbs between 280 nm and 400 nm.
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Wininger John M.
Zannucci Joseph S.
Eastman Kodak Company
Reece III Daniel B.
Tootle Clyde L.
Welsh Maurice J.
White R. A.
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