Patent · US Active

Preparation of catalyst for bisphenols production

US8932976B2 · kind B2 · utility

0Cited by
5References
16Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 3, 2008
Grant dateJan 13, 2015
Priority date—
Expiry dateDec 9, 2028

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB01J37/30
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

An improved method of preparing an ion exchange resin catalyst by partial neutralization of the ion exchange resin catalyst with a promoter. The promoter and a fluid are introduced into a vessel or a reactor which is partially filled with the ion exchange resin catalyst forming an ion exchange resin catalyst bed in the vessel or reactor. The fluid and the promoter are recirculated in an upflow direction at a velocity sufficient to partially fluidize the ion exchange resin catalyst bed and to achieve a rapid uniform distribution of the promoter throughout the catalyst bed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.