Bayer Aktiengesellschaft

Edgar P Mohring

Hanns P Muller

Kuno Wagner

Peter Roessler

Wilhelm Brandes

Paul Reinecke

Peter Stadler

Roland Richter

Hellmut Bredereck

Wolfgang Kugel

Helmut Tietz

Willi Kantlehner

A biologically active compound can be solubilized by reaction in different sequences to form a derivative carrying the active moiety, a linking group such as an optionally substituted diisocyanate radical, a polyether moiety such as a polyoxyethylene radical, and a terminal group such as a butyl radical, e.g. ##STR1## n=1 to 400. The active materials can be agricultural chemicals, pharmaceuticals, and the like.

Solubilizing biologically active compounds with reactive hydrogen atoms

The instant invention relates to an improved process for the preparation of low molecular weight polyalcohols by the catalytic hydrogenation of a mixture of different low molecular weight hydroxy aldehydes, hydroxy ketones and optionally also polyhydric alcohols such as is formed from the autocondensation of formaldehyde (such a mixture will hereinafter be referred to as 'formose'). The invention also relates to the use of these polyalcohols for the production of polyurethane resins.

Process for the preparation of low molecular weight polyhydroxyl

A process for increasing the duration of action of a pest-combating agent having at least one hydrogen atom which is active in Zerewitinoff reactions but which is not part of a carbamic acid ester group ##STR1## comprising linking the pest-combating agent with a polyether via a difunctional coupling member.

Process for increasing the duration of action of agents for combating

This invention relates to an improved process for the preparation of formose by the condensation of aqueous formaldehyde. In the process according to this invention, tertiary amines which contain an electrophilic hetero atom in the .beta.-position to the tertiary nitrogen atom are used for controlling the pH instead of the inorganic bases which have previously been used for this purpose.

Process for the preparaton of low molecular weight polyhydroxyl compounds

Formose solutions are hydrogenated in a batchwise alkaline two-stage catalytic process to produce low molecular weight polyhydric alcohols.

Process for the preparation of low molecular polyhydroxyl compounds

1,3-Substituted-(1,2,3,4,5,6H)-triazine-2,4-diones of the formula ##STR1## in which R represents straight-chain, branched or cyclic alkyl with up to 20 carbon atoms which is optionally monosubstituted or polysubstituted by halogen, cyano, aryloxy, alkoxy or halogenoalkoxy, or represents phenyl or naphthyl, either of which is optionally monosubstituted or polysubstituted by halogen, CN, C.sub.1 -C.sub.4 -alkyl, monoalkylamino, dialkylamino, halogenoalkyl, phenoxy (which is optionally substituted by halogen and/or halogenoalkyl), alkoxy or halogenoalkoxy, or represents phenylsulphonyl which is optionally substituted by halogen, cyano, monoalkylamino, dialkylamino or alkoxy, or represents alkylsulphonyl which is optionally substituted by halogen or cyano and

Combating arthropods with

The instant invention is directed to a process for the production of low molecular weight polyhydric alcohols by hydrogenating formose solutions in the presence of metal catalysts comprising

Process for the production of low molecular weight polyhydroxyl compounds

Process for the preparation of cellular or non-cellular polyurethane

This invention relates to a continuous or discontinuous process for the removal of catalytic quantities of lead ions from aqueous formose solutions by cationic electro-deposition. The process is preferably carried out with a constant current and in at least three stages, with lower current densities being maintained during the first and last stage than in the middle stages.

Process for the production of reaction products using aqueous formose

This invention relates to an improved process for the preparation of polyisocyanate mixtures containing biuret groups by the reaction of organic diisocyanates with compounds which react with isocyanate groups to form biuret groups, to the polyisocyanate mixtures obtained by this process and to the use thereof for the preparation of polyurethane resins by the isocyanate polyaddition process.

Preparation of polyisocyanates containing biuret groups

The present invention relates to a process for the preparation of polyisocyanates having biuret groups by reaction of excess quantities of organic polyisocyanates with compounds which react with isocyanate groups to form biuret groups, characterized in that the organic polyisocyanates are reacted with a mixture of water and at least one aliphatic, cycloaliphatic or araliphatic monoamine or polyamine.

Preparation of polyisocyanates having biuret groups and their use in

This invention relates to a continuous or discontinuous process for the removal of catalytic quantities of lead ions from aqueous formose solutions by cationic electrodeposition. The process is preferably carried out with a constant current and in at least three stages, with lower current densities being maintained during the first and last stage than in the middle stages.

Process for the removal of lead ions from formose

Combating arthropods with substituted triazine-2,4-diones of the formula ##STR1## in which R is alkyl or alkenyl with up to 20 carbon atoms, phenyl, naphthyl, or phenyl or naphthyl substituted by halogen, nitro or alkyl with 1-4 carbon atoms, and

Combating arthropods with substituted triazine-2,4-diones

Substituted triazine-2,4-diones of the formula ##STR1## in which R is an organo radical, and

Growing community of inventors

Bergisch-Gladbach, Germany

Edgar P Mohring