C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/194
C08G 63/52 (2006.01) C08G 63/54 (2006.01) C08G 63/68 (2006.01) C08G 64/04 (2006.01) C08K 5/00 (2006.01)
Patent
CA 1334465
Composition useful for molding into articles such as food containers, beverage bottles, cured structural plastics and the like comprising molding grade linear or unsaturated polyester or poly- carbonate (a) containing a mono-4-acyloxystyryl or bis-4-acyloxystyryl compound or (b) having reacted therewith or copolymerized therein a styryl residue derived from a mono-4-acyloxystyryl or bis-4- acyloxystyryl compound, having the formula or Image Image wherein each R1 is independently selected from cyano, carboxy, alkenyloxycarbonyl, or a substituted or unsubstituted alkoxycarbonyl, cycloalkoxycarbonyl or aryloxycarbonyl radical; each R2 is independently selected from one of the groups specified for R1 or an unsubstituted or substituted aryl, carbamoyl, alkanoyl, cycloalkanoyl, aroyl, alkylsulfonyl, cycloalkylsulfonyl, aryl- sulfonyl or aromatic, carbocyclic or heterocyclic radical; each R3 is independently selected from hydrogen or an unsubstituted or substituted alkyl, cycloalkyl or aryl radical; A1 and A2 are independently selected from 1,4-phenylene radicals; and R4 is an unsubstituted or substituted organic acyl radical and R5 is carbonyl, dicarbonyl or an unsubstituted or substituted organic diacyl radical. Preferred compositions comprise a linear polyester containing a styryl residue as an integral part of the polymer chain. The styryl residues absorb ultraviolet radiation in the range of about 250 to about 390 nm. The residues are non- extractable from the polymer and stable at the conditions at which the polymers are manufactured and processed.
591338
Coates Clarence Alvin Jr.
Hilbert Samuel David
Pruett Wayne Payton
Weaver Max Allen
Coates Clarence Alvin Jr.
Eastman Chemical Company
Gowling Lafleur Henderson Llp
Hilbert Samuel David
Pruett Wayne Payton
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