C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 51/487 (2006.01) C07C 51/43 (2006.01) C07C 63/00 (2006.01) C07C 63/16 (2006.01) C07C 63/24 (2006.01) C07C 63/26 (2006.01) C07C 63/38 (2006.01)
Patent
CA 2470871
The invention generally relates to a method for purifying a mixture of crude aromatic acids comprising at least one benzene carboxylic acid and at least one napthalene carboxylic acid. The purification method of the present invention provides a purified aromatic acid mixture useful in the manufacture of ultraviolet light resistance polyesters.
La présente invention concerne un procédé de purification d'un mélange d'acides aromatiques bruts comprenant au moins un acide benzène carboxylique et au moins un acide naphtalène carboxylique. Le procédé de purification selon la présente invention se rapporte à un mélange d'acides aromatiques purifiés utile dans la fabrication de polyesters résistant à la lumière ultraviolette.
Bp Corporation North America Inc.
Gowling Lafleur Henderson Llp
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