Bayer Aktiengesellschaft

Walter Klan

Manfred Dietrich

Norbert Eisen

Karl-Werner Dietrich

Wilhelm Lamberts

Manfred Schmidt

Torsten Heinemann

Claus-Dieter Sommerfeld

Frank Otto

James Thompson-Colon

Dennis McCullough

Christoph Prolingheuer

Polyol formulations, containing polyether polyols possessing 40 to 80 wt. % of tertiary amino groups and having an OH number of 300 to 500, preferably 350 to 420, obtainable by addition of exclusively propylene oxide to o-toluene diamine, which contain cyclopentane and/or n- and/or i-pentane and/or hydrofluoroalkanes as blowing agent, are used for the manufacture of rigid polyurethane foams by reacting with organic polyisocyanates, optionally further compounds with at least two hydrogen atoms reactive to isocyanates, optionally in the presence of water, and further blowing agents known per se as well as conventional auxiliaries and additives.

Polyether polyols, polyol formulation containing them and their use in

Method of producing hydrocarbon-expanded rigid polyurethane foams

Process for preparing rigid polyurethane foams

A reaction product is formed from a tertiary amine and an acid mixture of (i) boric acid and (ii) a carboxylic acid. The reaction components are generally used in quantities such that the molar ratio of tertiary amine to acid mixture is from 1:0.1 to 1:10. The molar ratio of the boric acid to the carboxylic acid in the acid mixture is generally from 1:100 to 1:0.01. These reaction products are particularly useful as catalysts in the production of isocyanate addition products.

Reaction products useful as catalysts in the production of

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Leverkusen, Germany

Walter Klan