Invista North America S.a.r.l.

Stewart Forsyth

Keith Whiston

Kenneth Richard Seddon

John Arthur Turner

Thomas E Vos

Sudhir Aki

Claimed is a process for producing a phosphorus-containing ligand, preferably a diphosphite ligand structure (DLS) such as structure I. The method includes contacting a phosphorochloridite (structure II) with a compound having the structure X&#x2014;OH (which can be a bisaryl compound), and a tertiary organic amine to provide structure I' and as preferred embodiment structure I. 

Method for making organodiphosphites from phosphorochloridites characterized by measuring side-product levels to determine further additions

The invention relates to an ionic liquid composition and a method for preparing the ionic liquid. The ionic liquid comprises a cation containing the Formula I, as herein disclosed, and wherein: n is 2, Ris selected from the group consisting of: H, C-Calkyl, aryl or together with Rmay form a heterocyclic ring, and Ris selected from the group consisting of: H, C-Calkyl, aryl or together with Rmay form a heterocyclic ring, and Ris selected from the group consisting of hydrogen and C-Calkyl, and wherein Rand Rare not simultaneously selected from hydrogen.

Ionic liquids

An improved process for the hydrolysis of nylon polymer is herein disclosed using ionic liquids and optionally one equivalent of sulfuric acid per amide residue of the polymer. The process provides for a simplified means for separation of the hydrolyzed polyamide constituent monomers.

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Wingate, United Kingdom

Stewart Forsyth