A process for preparing polymeric, ionic compounds comprising imidazolium groups (polymeric, ionic imidazolium compounds for short) comprising reacting an a-dicarbonyl compound, an aldehyde, at least one amino compound having at least two primary amino groups (referred to as oligoamine), if appropriate an amino compound having only one primary amino group (referred to as monoamine) and a protic acid, wherein the protic acid is placed in the reactor and the oligoamine or the aldehyde and o dicarbonyl compound or the oligoamine, the aldehyde and -dicarbonyl compound are fed to the protic acid.

A process for preparing polymeric, ionic compounds comprising imidazolium groups (polymeric, ionic imidazolium compounds for short) comprising reacting an a-dicarbonyl compound, an aldehyde, at least one amino compound having at least two primary amino groups (referred to as oligoamine), if appropriate an amino compound having only one primary amino group (referred to as monoamine) and a protic acid, wherein the protic acid is placed in the reactor and the oligoamine or the aldehyde and o dicarbonyl compound or the oligoamine, the aldehyde and -dicarbonyl compound are fed to the protic acid.

Dielectric materials with optimal mechanical properties for use in laser ablation patterning are proposed. These materials include a polymer selected from the group consisting of polyureas, polyurethane, and polyacylhydrazones. New methods to prepare suitable polyacylhydrazones are also provided. Those methods involve mild conditions and result in a soluble polymer that is stable at room temperature and can be incorporated into formulations that can be coated onto microelectronic substrates. The dielectric materials exhibit high elongation, low CTE, low cure temperature, and leave little to no debris post-ablation.

Dielectric materials with optimal mechanical properties for use in laser ablation patterning are proposed. These materials include a polymer selected from the group consisting of polyureas, polyurethane, and polyacylhydrazones. New methods to prepare suitable polyacylhydrazones are also provided. Those methods involve mild conditions and result in a soluble polymer that is stable at room temperature and can be incorporated into formulations that can be coated onto microelectronic substrates. The dielectric materials exhibit high elongation, low CTE, low cure temperature, and leave little to no debris post-ablation.

The present invention relates to a polymer comprising a repeating group having the structure of formula (I)

##STR00001##

wherein R, R.sup.1, R.sup.2, X, i, j, m, n, o, and s are as described herein. The present invention also relates to a process for preparation of such polymers.

The formaldehyde-free binder for materials containing cellulose contains a hydroxy aldehyde resin polycondensed with an ammonium salt, the resin being obtained, in especially preferred embodiments, from glycerin, in situ, with the aid of hydrogen peroxide. A protein component consisting of animal blood is added. The binder is urea-free and can be used as a one-component or two-component binder. It binds materials such as wood, paper and other natural fibres to form high-quality composite material products.

The present application relates to an amphiphilic polymer and a method of preparing the same. Furthermore, the present application relates to a micelle including a drug encapsulated by the amphiphilic polymer and a composition including the same. The amphiphilic polymer according to the present application has excellent drug encapsulation properties as well as good dispersion properties in an aqueous solution.

The present application relates to an amphiphilic polymer and a method of preparing the same. Furthermore, the present application relates to a micelle including a drug encapsulated by the amphiphilic polymer and a composition including the same. The amphiphilic polymer according to the present application has excellent drug encapsulation properties as well as good dispersion properties in an aqueous solution.

A process for preparing polymeric, ionic compounds comprising imidazolium groups (polymeric, ionic imidazolium compounds for short) comprising reactingan -dicarbonyl compound,an aldehyde,at least one amino compound having at least two primary amino groups (referred to as oligoamine),if appropriate an amino compound having only one primary amino group (referred to as monoamine) and aprotic acid, wherein the molar ratio of the -dicarbonyl compound to the oligoamine is greater than 1.

A process for preparing polymeric, ionic compounds comprising imidazolium groups (polymeric, ionic imidazolium compounds for short) comprising reactingan -dicarbonyl compound,an aldehyde,at least one amino compound having at least two primary amino groups (referred to as oligoamine),if appropriate an amino compound having only one primary amino group (referred to as monoamine) and aprotic acid, wherein the molar ratio of the -dicarbonyl compound to the oligoamine is greater than 1.