Phosphites

US6770770B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Robert Baumann · Mannheim, DE
• Jakob Fischer · Haag in Oberbayern, DE
• Tim Jungkamp · Sandhausen, DE
• Dagmar Pascale Kunsmann-Keitel · Ludwigshafen am Rhein, DE
• Wolfgang Siegel · Schifferstadt, DE

Key dates

• Filing date: Apr 25, 2002
• Grant date: Aug 3, 2004
• Expiry date: Oct 3, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/847
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Novel phosphites have the formula IP(O—R1)x(O—R2)y(O—R3)z(O—R4)p  IwhereR1: aromatic radical having a C1-C18-alkyl substituent in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic substituent in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic system fused on in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system,R2: aromatic radical having a C1-C18-alkyl substituent in the m position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic substituent in the m position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, or having an aromatic system fused on in the m position relative to the oxygen atom which connects the phosphorus atom to the aromatic system, where the aromatic radical bears a hydrogen atom in the o position relative to the oxygen atom which connects the phosphorus atom to the aromatic system,R3: aromatic radical having a C1-C18-alkyl substituent i…