Tape adhesives suitable for impregnating processes for insulation systems are described. Embodiments of the tape adhesives include solid insulation material such as mica, anhydride-free impregnating resins and accelerators for the anhydride-free impregnating resins. The tape adhesives may be adjusted with respect to the reactivity of the accelerators for the anhydride-free impregnating resins in relation for the storage stability of the overall insulation systems.

Processes are described for producing a polycyclic polyether polyol having a hydroxyl functionality of 1.5 to 6 and a number average molecular weight of 200 to 12,000 Da. The processes comprise alkoxylating a polyol starter comprising predominantly a polycyclic polyol with an alkylene oxide in the presence of a DMC catalyst.

Disclosed are compositions that comprise water and a polyether polyol derived from sucrose and an alkylene oxide, as well as polyurethane foam systems comprising such compositions, methods for their production, and the resulting polyurethane foams.

The present invention relates to a method for producing polyether carbonate polyols by attaching alkyloxides and carbon dioxide to H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as the H-functional starter compound. The invention further relates to polyether carbonate polyols containing a structural unit of the formula (IV), wherein: R.sup.1 denotes a linear or branched C.sub.2 to C.sub.24-alkylene, which optionally can be interrupted by heteroatoms of O, S or N and can be substituted, preferably by CH.sub.2CH.sub.2 or CH.sub.2CH(CH.sub.3); R.sup.2 denotes a linear or branched C.sub.2 to C.sub.24-alkylene, C.sub.3 to C.sub.24-cycloalkylene, C.sub.4 to C.sub.24-alkylene, C.sub.5 to C.sub.24-aralkylene, C.sub.2 to C.sub.24-alkenylene, C.sub.2 to C.sub.24-alkynylene, each of which can optionally be interrupted by heteroatoms such as O, S or N and/or can be substituted with alkyl, aryl and/or hydroxyl groups, preferably C.sub.2 to C.sub.24-alkyls; R.sup.3 denotes H, linear or branched C.sub.1 to C.sub.24-alkyl, C.sub.3 to C.sub.24-cycloalkyl, C.sub.4 to C.sub.24-aryl, C.sub.5 to C.sub.24-aralkyl, C.sub.2 to C.sub.24-alkenyl, C.sub.2 to C.sub.24-alkynyl, each of which can optionally be interrupted by heteroatoms such as O, S or N and/or can each be substituted with alkyl, aryl and/or hydroxyl groups, preferably H; R.sup.4 denotes H, a linear of branched C.sub.1 to C.sub.24-alkyl, C.sub.3 to C.sub.24-cycloalkyl, C.sub.4 to C.sub.24-aryl, C.sub.5 to C.sub.24-aralkyl, C.sub.2 to C24-alkenyl, C2 to C.sub.24-alkynyl, each of which can optionally be interrupted by heteroatoms such as O, S or N and/or can each be substituted with alkyl, aryl and/or hydroxyl groups, preferably H; R.sup.5 denotes a linear or branched C.sub.2 to C.sub.24-alkylene, which can optionally be interrupted by heteroatoms such as O, S or N and can be substituted, preferably by CH.sub.2CH.sub.2 or CH.sub.2CH(CH.sub.3); and wherein R1 to R5 can be identical or different to each other.

Provided herein are novel surfactant compositions and methods having application in a variety of fields including enhanced oil recovery, the cleaning industry as well as groundwater remediation. The surfactant compositions are based on lignin bio-oil with a phenol hydroxyl group as the main functional group. The compositions include carboxylic surfactant s and mixed hydrophilic and hydrophobic surfactant structures, which can be used for the recovery of crude oil compositions from challenging reservoirs.

The invention relates to a pharmaceutical agent for the complexation of iron. The pharmaceutical agent includes an initiator group, a polymer and a terminal group R.sup.7, and has the structure: initiator group-polymer-R.sup.7. The pharmaceutical agent further includes one or more functional hydroxamic acid groups of the type (CO)NHOH or (CO)NCH.sub.3OH.

The present invention relates to a process for preparing polyether polyols by adding alkylene oxides onto H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as H-functional starter compound. The invention further provides the polyether polyols containing a structural unit of the formula (IV) where R.sup.1 is linear or branched C.sub.2 to C.sub.24-alkylene which may optionally be interrupted by heteroatoms such as O, S or N and may be substituted, preferably CH.sub.2CH.sub.2 or CH.sub.2CH(CH.sub.3), R.sup.2 is linear or branched C.sub.2 to C.sub.24-alkylene, C.sub.3 to C.sub.24-cycloalkylene, C.sub.4 to C.sub.24-arylene, C.sub.5 to C.sub.24-aralkylene, C.sub.2 to C.sub.24-alkenylene, C.sub.2 to C.sub.24-alkynylene, each of which may optionally by interrupted by heteroatoms such as O, S or N and/or may each be substituted by alkyl, aryl and/or hydroxyl, preferably C.sub.2 to CM alkylene, R.sup.3 is H, linear or branched C.sub.1 to C.sub.24-alkyl, C.sub.3 to C.sub.24-cycloalkyl, C.sub.4 to C.sub.24-aryl, C.sub.5 to C.sub.24-aralkyl, C.sub.2 to C.sub.24-alkenyl, C.sub.2 to C.sub.24-alkynyl, each of which may optionally be interrupted by heteroatoms such as O, S or N and/or each of which may be substituted by alkyl, aryl and/or hydroxyl, preferably H, R.sup.4, is H, linear or branched O to C.sub.24-alkyl, C.sub.24-cycloalkyl, C.sub.4 to C.sub.24-aryl, C.sub.5 to C.sub.24-aralkyl, C.sub.2 to C.sub.24-alkenyl, C.sub.2 to C.sub.24-alkynyl, each of which may be interrupted by heteroatoms such as O, S or N and/or each of which may be substituted by alkyl, aryl and/or hydroxyl, preferably H, IV is linear or branched C.sub.2 to C.sub.24-alkylene which may optionally be interrupted by heteroatoms such as O, S or N and may be substituted, preferably CH.sub.2CH.sub.2 or CH.sub.2CH(CH.sub.3), and where R.sup.1 to R.sup.5 may be identical or different from one another, and the polyether polyols obtainable by the process according to the invention.

A method for preparing a polyether polyol in a continuous reaction cycle is described. In the method, a low molecular-weight alcohol is polymerized with an alkylene oxide to obtain a low molecular-weight polymer. The low molecular-weight polymer is used as an initiator to react with the alkylene oxide and the low molecular-weight alcohol in the presence of a DMC catalyst and an acid promoter to obtain an intermediate-target polymer. A portion of the intermediate-target polymer is used for producing the target polymer, and the other portion is recycled for reproduction of the intermediate-target polymer. No initiator prepared with a base catalyst is used, and thus the loss of material and the discharge of residue and waste water are reduced. The DMC concentration is kept constant in the target polymer during the production such that the dewatering time and induction time are greatly reduced.

Processes for preparing a polymer polyol (PMPO) in which a base polyol is continuously produced in a continuous base polyol reactor, the base polyol is continuously discharged from the continuous base polyol reactor; the base polyol is continuously introduced to a continuous PMPO reactor, which is different from the continuous base polyol reactor, and PMPO is continuously removed from the PMPO reactor. Production plant configured to carry out such processes are also described.

The invention relates to an efficient method for producing polyoxyalkylene polyols with equivalent molar masses between 9500 and 23000 g/mol from one or more H-functional starter compounds, and one or more alkylene oxides in the presence of a double metal cyanide catalyst, characterized in that the alkylene oxide metering rate is reduced once a calculated equivalent molar mass of between 8000 and 9500 g/mol is reached.