Nova Patents
AT284859T

A process for producing terephthalic acid and/or dimethyl terephthalate

Abstract

The terephthalic acid and/or the preparation method of the terephthalic acid dimethyl ester, comprising of the toluene disproportionation condition, which comprises a toluol reaction stream with the first catalyst material, the aim of about one can be neglect xylene converting the steps product is. The first catalyst comprises one or more of crystal molecular sieve, having at least 50 min xylene the speed. A adjusting the silicon compound or carbon compound to the selectivity to the first catalyst modification. Does not need to depute the p-xyleneto, intermediate product oxidation and reinforcing terephthalic acid or terephthalic acid ester and.

Term

No projected expiry on record.

  1. Priority
  2. Filed
  3. Granted
  4. Today

17 members in 14 offices

This recordMember, by publication datePriority claim4 more offices are in the list below

Priority claims2

Priority claims
DocumentOfficeKindDate
12328198United States of AmericaA
9916491United States of AmericaW

Members17

Family members, oldest first
DocumentOfficeKind
CA2338656A1CanadaA1
WO0006530A1World Intellectual Property Organization (WIPO)A1
AU5005599AAustraliaA
US6133470AUnited States of AmericaA
BR9912567ABrazilA
EP1100765A1European Patent Office (EPO)A1
KR20010071053ARepublic of KoreaA
ZA200100764BSouth AfricaB
CN1319084AChinaA
AR020637A1ArgentinaA1
TW491836BTaiwan Province of ChinaB
JP2002521467AJapanA
EP1100765A4European Patent Office (EPO)A4
EP1100765B1European Patent Office (EPO)B1
AT284859TThis recordAustriaT
ATE284859T1AustriaT1
DE69922660D1GermanyD1