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[PDF] United States Patent Office

An object of the invention is the preparation of tri mellitic anhydride from trimellitic acid A particular ob ject is a process for the preparation of trimelitic anhy



[PDF] Phthalic Acids and Other Benzenepolycarboxylic - ResearchGate

This article discusses the benzenepolycarboxylic acids, their anhydrides, and their esters Table 1 includes Isophthalic acid is used primarily in the production of unsaturated polyesters and as a mellitic acid [517-60-2] 342 18 1 Physical 



[PDF] TRIMELLITIC ANHYDRIDE HEALTH AND SAFETY GUIDE - UN

The preparation of Erimellitic anhydride is based on the liquid-phase air- oxidation of pseudocumerie to form trimellitic acid, this being sub- sequently dehydrated 

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