Ube Industries, Inc.

Fumio Matsuo

Michinori Suzuki

Akinori Shiotani

Noboru Kakeya

Kiyoshi Fukui

Hiroshi Jibiki

Process of production of 3,4,3',4'-substituted biphenyl compound

A thermotropic aromatic polyester comprising (a) an aromatic dicarbonyl ingredient comprising recurring aromatic units of the formulae (I) and/or (II): ##STR1## and, optionally, other recurring aromatic dicarbonyl units, (b) an aromatic dioxy ingredient comprising recurring aromatic units of the formula (III) ##STR2## wherein R.dbd.--H, C.sub.1-8 alkyl, aryl or Halogen atom, and optionally, (c) an aromatic oxycarbonyl ingredient comprising recurring aromatic oxycarbonyl units, of, for example, the formula (IV): ##STR3##

Thermotropic aromatic polyester which is melt-processable at low

Novel orotic acid derivatives useful as agricultural chemicals or intermediates thereof are disclosed. The orotic acid derivatives are represented by the formula ##STR1## where Me is an alkali metal, R.sup.1 is an alkyl group of from 1 to 4 carbon atoms, an allyl group, a cyclohexyl group, a benzyl group, or a group ##STR2## (where R.sup.2 is an alkyl group of from 1 to 4 carbon atoms, an alkoxyl group of from 1 to 4 carbon atoms or a halogen atom and n is 0, 1, 2 or 3), m is an integer of 1 or 2, and X is a chlorine, bromine or iodine atom or a group --COR.sup.0 (where R.sup.0 is an alkyl group of from 1 to 4 carbon atoms or a phenyl group) when m is 1, and a group --COO.sup.- when m is 2.

Orotic acid derivatives

Growing community of inventors

Ichihara, Japan

Fumio Matsuo