Polycarbonate resin compositions having improved resistance to deterioration when exposed to light and containing alkylidene bis(benzotriazolyl phenols)
December 22, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3322719 3367958 3892889 Color photographic photosensitive material containing ultraviolet ray-absorbing compound Benzotriazole ultraviolet stabilizing compounds and their use in organic compositions 2-[2-Hydroxy-3,5-di-( ,-dimethylbenzyl)-phenyl]-2H-benzotriazole and stabilized compositions Stabilization of acid catalyzed stoving lacquers Stabilizer compositions for synthetic resins imparting improved light stability Polyacetal resin compositions having improved resistance to deterioration when exposed to light and containing alkylidene bis(benzotriazolyl phenols) Thermosetting synthetic resin lacquer compositions having improved light stability Patent #: 4684680 InventorsAssigneeApplicationNo. 06/945733 filed on 12/22/1986US Classes:524/91, Three or more nitrogen atoms in the fused or bridged ring system524/100, Six-membered nitrogen ring having two or more ring nitrogen atoms524/102, Two or more nitrogen rings524/111, Five-membered chalcogen ring524/118, Halogen524/119, Two or more phosphorus rings524/120, Spiro ring524/141, Aryl group524/148, Atom other than C, O, H, P, or Hal524/151, Two or more aryl groups524/153, Triphenyl phosphite per se524/157, Sulfur bonded directly to three oxygen atoms524/336, A single C=O group524/337, Aryl group having two or more OH groups directly attached to nuclear carbons thereof524/338, Two or more aryl-OH groups524/83, Hetero ring contains sulfur and at least one diverse hetero atom524/84, Five-membered sulfur ring524/99Six-membered nitrogen ring, e.g., pyridine, etc.ExaminersPrimary: Morgan, Kriellion S.International ClassesC08K 5/00 (20060101)C08K 5/00 (20060101) C08K 5/3475 (20060101) C08K 5/3475 (20060101) AbstractPolycarbonate resin compositions are provided having improved light stability and comprising an alkylidene bis(benzotriazolyl phenol)having the formula: ##STR1## wherein: R1 is selected from the group consisting of hydrogen and alkyl having from one to about eleven carbon atoms;R2 is selected from the group consisting of alkyl having from one to about twelve carbon atoms; and arylalkyl having from seven to about eighteen carbon atoms; andX is selected from the group consisting of hydrogen; halogen; alkyl having from one to about twelve carbon atoms; aryl alkyl having from seven to about eighteen carbon atoms; alkoxy having from one to about twelve carbon atoms; phenoxy; arylalkoxy having from seven to about eighteen carbon atoms; and phenyl.Other References
Field of SearchThree or more nitrogen atoms in the fused or bridged ring systemHetero ring contains sulfur and at least one diverse hetero atom Five-membered sulfur ring Six-membered nitrogen ring, e.g., pyridine, etc. Six-membered nitrogen ring having two or more ring nitrogen atoms Two or more nitrogen rings Five-membered chalcogen ring Halogen Two or more phosphorus rings Spiro ring Aryl group Atom other than C, O, H, P, or Hal Two or more aryl groups Triphenyl phosphite per se Sulfur bonded directly to three oxygen atoms Oxygen atom other than as part of a sulfur bonded directly to two oxygen atoms Atom other than C, H, or O Two or more carboxylic acid or derivative groups Group IVA metal (i.e., Ge, Sn, Pb) | |
