Bayer Corporation

Bayer Materialscience Ag

Bayer Materialscience, LLC

Bayer Polymers LLC

Keith J Headley

Steven L Schilling

Rick L Adkins

Herman P Doerge

Klaus Lorenz

Karl W Haider

Reinhard Albers

Don S Wardius

Harold R Parsons

Edward E Ball

Frank Otto

Kerry Ingold

Nathan L Anderson

Ulrich Leyrer

Donald C Dunham

The present invention provides a process for the preparation of polyols based on fatty acid esters and starter compounds having Zerewitinoff-active hydrogen atoms and the use thereof for the preparation of polyurethane materials.

Process for the preparation of polyether-ester polyols

Clear, amine-initiated polyether polyols are made by epoxidizing an amine in the presence of an alkali metal hydroxide catalyst. By reducing the amount of catalyst used during the polyol synthesis and by adding the catalyst after between 5 and 30% of the total amount of at least one alkylene oxide has been added, after lactic acid neutralization, gives a short chain polyol that has foam processing characteristics similar to the conventional sulfuric acid neutralized polyol. The polyols produced in this manner are particularly useful for the production of polyurethane and polyisocyanurate foams.

Amine-initiated polyether polyols and a process for their production

A co-initiated polyether polyol is produced by suspending a solid polyhydroxyl compound in an amine-initiated polyol, heating the suspension and alkoxylating the heated suspension. These co-initiated polyether polyols are particularly useful for the production of polyurethanes.

Co-initiated polyols useful for the production of rigid polyurethane foams

This invention relates to stable aromatic amine compositions. These compositions comprise a) a compound selected from the group consisting of alkali metal salts of sulfur compounds, hydrates thereof and aldehydes thereof, aluminum hydrides, borates and boron compounds; and b) an aromatic amine. This invention also relates to a process for stabilizing the color of aromatic amines, and to the production of polyether polyols from these stable aromatic amine compositions.

Stable aromatic amine composition, and a process for preparing color

This invention relates to a process for the purification of polyether polyols. This process enables the removal of residual alkaline metal catalyst from produced polyether polyol. It comprises a) adding glycerine to a polyether polyol that contains Group IA alkaline metal catalyst to form a precipitate, and b) separating the precipitate formed in a) to provide a purified polyether polyol. The present invention also relates to the purified polyether polyol produced by this process, the precipitate produced by this process, and the use of the precipitate as an alkaline metal catalyst in a process for the production of polyether polyols.

Process for the removal of alkalinity in the manufacture of polyether

This invention relates to stable aromatic amine compositions. These compositions comprise a) a compound selected from the group consisting of aldehydes, ketones, acetals and ketals, and b) an aromatic amine. This invention also relates to a process for stabilizing the color of aromatic amines, and to the use of these aromatic amines as initiators for the preparation of polyether polyols.

Stable aromatic amine composition, a process for preparing color stable

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Paden City, WV, United States of America

Keith J Headley