High molecular weight dibenzoylresorcinol UV absorbers, coating

Details High molecular weight dibenzoylresorcinol UV absorbers, coating High molecular weight dibenzoylresorcinol UV absorbers, coating

1998-10-23

2000-03-14

Hoke, Veronica P.

Stock material or miscellaneous articles

Composite

Of polycarbonate

524291, 524335, 560107, 560255, 568337, B32B 2736, C08K 5101, C07C 6976, C07C 6702

Patent

active

060370599

ABSTRACT:
Novel dibenzoylresorcinol compositions capable of absorbing ultraviolet light having the formula ##STR1## where Ar.sub.1 and Ar.sub.2 are independently substituted or unsubstituted monocyclic or polycyclic aryl groups, R is hydrogen, an aryl group, or a linear or branched alkyl chain having less than about 10 carbons, and Ar.sub.3 is an aryl group bearing at least one hydroxyl group. Methods of making the compositions are provided. The novel dibenzoylresorcinol compositions are methylene-bridged dibenzoylresorcinol derivatives having a phenol group on the bridging methylene and are compatible in coating compositions to improve the weatherability of thermoplastic substrates.

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Material Data Sheet: ADK STAB La-51 (ex LS.BO.222) from Asnhi Denka Kogyo, Tokyo, (1 page).
Claus Huth GmbH Hamburg, Mixxim PB-30, Fairmount Chemical Col., Inc. (1 page).
Mixxim BB/100, Fiarmount Chemical Co., Inc. (2 pages).
CA 103: 123103, 1984.

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