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.

A method of synthesizing a resin including mixing a first solution including a melamine compound with a second solution including glutaraldehyde to form a third solution, heating the third solution to 35 C. to 90 C. in at a pH above 7 for 5 to 70 minutes, and cooling the third solution to room temperature.

A method of synthesizing a resin including mixing a first solution including a melamine compound with a second solution including glutaraldehyde to form a third solution, heating the third solution to 35 C. to 90 C. in at a pH above 7 for 5 to 70 minutes, and cooling the third solution to room temperature.

The invention relates to a security pigment, comprising core-shell particles having a core based on an organic addition polymer, a shell based on an organic condensation polymer and a feature substance present in the core in finely dispersed or dissolved form, wherein the addition polymer is a three-dimensionally cross-linked duromer.

Materials and methods for preparing a modified poly(hexahydrotriazines) (PHTs) polymers and modified polyhemiaminals (PHAs) are provided. A monomer precursor, a photochromic precursor, and a formaldehyde material may be combined to form a photochromic polymer. The photochromic polymer may comprise hexahydrotriazine, hemiaminal, polyhexahydrotriazine, polyhemiaminal, or a combination thereof.

Materials and methods for preparing a modified poly(hexahydrotriazines) (PHTs) polymers and modified polyhemiaminals (PHAs) are provided. A monomer precursor, a photochromic precursor, and a formaldehyde material may be combined to form a photochromic polymer. The photochromic polymer may comprise hexahydrotriazine, hemiaminal, polyhexahydrotriazine, polyhemiaminal, or a combination thereof.

Polymeric reaction products of certain substituted tetraarylmethane monomers are useful as underlayers in semiconductor manufacturing processes.

Polymeric reaction products of certain substituted tetraarylmethane monomers are useful as underlayers in semiconductor manufacturing processes.

?-Aminoamidine polymers and methods of preparing a-aminoamidine polymers by reacting by reacting one or more amines with one or more isocyanides and one or more aldehydes are described. Methods of preparing a-aminoamidine polymers from commercially available starting materials are also provided, wherein the starting materials are racemic or stereochemically pure. a-Aminoamidine polymers or salt forms thereof are preferably biodegradable and biocompatible and may be used in a variety of drug delivery systems and for other purposes as well such as, for example, coatings, additives, excipients, plastics, and materials, etc. Given the amino moiety of these ?-aminoamidine polymers, they are particularly suited for the delivery of polynucleotides. Complexes, micelles, liposomes or particles containing the inventive ?-aminoamidine polymers and polynucleotides can be prepared. The inventive ?-aminoamidine polymers may also be used in preparing microparticles for drug delivery. They are particularly useful in delivering labile agents given their ability to buffer the pH of their surroundings.

?-Aminoamidine polymers and methods of preparing a-aminoamidine polymers by reacting by reacting one or more amines with one or more isocyanides and one or more aldehydes are described. Methods of preparing a-aminoamidine polymers from commercially available starting materials are also provided, wherein the starting materials are racemic or stereochemically pure. a-Aminoamidine polymers or salt forms thereof are preferably biodegradable and biocompatible and may be used in a variety of drug delivery systems and for other purposes as well such as, for example, coatings, additives, excipients, plastics, and materials, etc. Given the amino moiety of these ?-aminoamidine polymers, they are particularly suited for the delivery of polynucleotides. Complexes, micelles, liposomes or particles containing the inventive ?-aminoamidine polymers and polynucleotides can be prepared. The inventive ?-aminoamidine polymers may also be used in preparing microparticles for drug delivery. They are particularly useful in delivering labile agents given their ability to buffer the pH of their surroundings.