Curable composition containing anhydride resins

C - Chemistry – Metallurgy – 08 – G

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C08G 67/04 (2006.01) B05D 7/00 (2006.01) C08G 59/42 (2006.01) C08L 63/00 (2006.01) C08L 73/02 (2006.01) C09D 5/03 (2006.01) C09D 133/06 (2006.01) C09D 163/00 (2006.01) C09D 173/02 (2006.01) C08L 57/00 (2006.01)

Patent

CA 2147361

Compositions of coreactant resins and polyanhydrides that contain a central moiety and more than one non-cyclic anhy- dride moiety are cured to provide coatings that have good exterior durability. Preferred high molecular weight polyanhydrides contain a central polymer moiety that has no more than 25 weight percent repeating units derived from unsaturated aliphatic hy- drocarbon monomers. In other preferred polyanhydrides, the anhydride moieties are linked to a central moiety by an ester moie- ty.

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