5.Amino phthalhydrazide was synthesized from phthalic anhydride by four steps of nitrationidehydration, hydrazinolysis and reduction reactions in this paper.
6.The diisoamyl glutarate in catalysis of silicotungsticacid was preparated by esterification of isoamyl alcohol and glutaric anhydride seperated from dicarboxylic acid.
8.Phthalein acid anhydride Photophobic pharmaceutical and has special protective action on the ultraviolet ray. It can cure sunlight dermatitis, eczema, etc.
9.The test for treatment of waste water from acetic acid and acetic anhydride production by using anaerobic digestion-aerophile biochemical method is described.
10.E—M water treatment agent for boilers,composed of ethylenediamine tetramethylene phosphonic acid(EDTMP) and hydrolyzed polymaleic anhydride (HPMA),and its applications are introduced in this article.
11.From rosin purified abietic acid was prepared by using abietic acid as stared material acylamino surfactant was synthesized by maleric anhydride and diethanolamine.
12.In the presence of catalyst phosphoric acid,isomeric addition of bipentene with cis-butenedioic anhydride can form terpenyl bu tenedioic anhydride compound as expoxylite firming agent.
13.In the presence of acetic acid and polyethylene glycol, chromic anhydride and acenaphthene react under mild condition and acenaphthene can completely convert into acenaphthenone.
14.This study focused on the recovery of aromatic polycarboxylic acids from the mother liquor of manufacturing trimellitic anhydride and it's application for making mixed plastifier.
15.In this paper, the synthesis of 2 - chloranthraquinone and 2 - aminoanthraquinone was studied.It was prepared from phthalic anhydride by acetyiation, hydrolysis and cyclization.
16.Acylation activity of hydroxyl groups in methyl cholicate has been determined by the use of methacryloyl chloride, methacryloyl anhydride and methacrylic acid as the acylating agents.
17.Moreover, we found that N-heterocyclic carbene (NHC) could served as an efficient and novel catalyst for the reactions of aziridines with silylated nucleophiles or acid anhydrides.
18.The mechanical property and thermal stability of cured epoxy resin were closely related to the chemical structure of hydrogenated terpinene maleic anhydride.
19.In this paper,1 acetylaminoanthraquinone was synthesized by using 1 aminoanthraquinone and acetic anhydride as starting materials and by using acetic acid as solvent.
20.Firstly, p-methylacetophenone was obtained in the presence of alchlor as the catalyst, and the optimum condition was 4:1:2 in molar ratio for toluene, acetic anhydride and alchlor with yield of 86.2%.