Back to results
US 12,758,954 B2Granted
Catalyst system and process for producing bisphenol-A
AssigneeBadger Licensing LLC
InventorsMariam Salazar Rodriguez, Chung-Ming Chi
Life of this patent
Estimating the term…
Abstract
Described is a catalyst system useful in the production of bisphenol-A comprises (a) an acidic heterogeneous catalyst comprising amorphous silica having organosulfonic acid groups chemically bonded thereto, wherein the catalyst has a pKa value of 3.5 or less; and (b) a catalyst promoter comprising at least one organic sulfur-containing compound.
Claims10
A catalyst system useful in the production of bisphenol-A comprising:
- (a) an acidic heterogeneous catalyst comprising amorphous silica having organosulfonic acid groups chemically bonded thereto, wherein the catalyst has a pKa value of 3.5 or less;
- and
- (b) a catalyst promoter comprising at least one organic sulfur-containing compound, wherein the at least one organic sulfur-containing compound is employed in an amount from 5 to 20 mol %, based on the organosulfonic acid groups in the acidic heterogeneous catalyst.
Dependencies are inferred from the claim text.