Abstract:
A process is described for manufacture of packaging, wherein the packaging surface is coated with a polyelectrolyte complex and wherein the polyelectrolyte complex consists of at least one first polymer and at least one second polymer, wherein the first polymer is an anionic polymer and the second polymer is a cationic polymer. The packagings are characterized by good grease barrier properties.
Abstract:
Poliésteres hiperramificados con un peso molecular promedio en peso Mw de entre 500 y 300.000 g/mol, obtenibles mediante conversión de al menos un ácido oligohidroxicarboxílico en presencia de al menos un catalizador y en presencia de al menos un disolvente inerte en las condiciones de reacción, caracterizados por que se ajusta la temperatura durante la reacción a no más de 120 ºC, la funcionalidad media de funciones carboxi por molécula asciende a más de 0,8 y a menos de 1,05 y la funcionalidad media de grupos éter -CH2-O-CH2- asciende a menos de 0,20 y el catalizador está seleccionado del grupo compuesto de ácidos, quelatos de metal, alcoholatos de metal, alcanoatos de metal y compuestos organometálicos.
Abstract:
The invention relates to metal-nanoparticles and to methods for the production thereof in which a metallic salt solution is reduced by means of a reducing agent in the presence of the derivatised polyethylenimines or polyvinylamines. Metal salt solutions of two or more different metals can be reduced at the same time or successively. The metallic nanoparticles are obtained from two or more different metals. Metals are preferably silver, palladium and platinum. Suitable reducing agents are, for example, formic acid, formaldehyde, diethanolamine, 5-pentenic acids and sodium borohydride. Silver can be used in the form of silver oxide and/or silver nitrate, palladium can be used in the form of alkali tetrachloropalladate or palladium(ll)nitrate and platinum can be used in the form of alkali tetrachloroplatinate or tetraamine platinum(ll)nitrate.
Abstract:
Disclosed are paper coating slips containing a) one or more binders, b) an optional thickener, c) an optional fluorescent or phosphorescent ink, particularly as an optical brightening agent, d) pigments or fillers, and e) additional auxiliary agents, e.g. auxiliary flowing agents or other inks. Said paper coating slips are characterized in that at least 40 percent by weight of the total amount of binders a) are provided in the form of a synthetic, water-soluble, anionic polymer while less than 50 percent by weight of the total amount of binders a) are provided in the form of emulsion polymers.
Abstract:
The invention relates to graft polymers, the graft foundation thereof being selected from the group of polymers having vinyl amine units, polyamines, polyamidoamines, and polymers of ethylenic unsaturated acids, and which exclusively contain oligoalkylene imine side chains as side chains, methods for the production of graft polymers having oligoalkylene imine side chains, wherein at least one oligoalkylene imine, which contains a terminal aziridine group, is grafted onto one of the cited graft foundations, and use of the graft polymers thus obtained as processing chemicals in the production of paper, as antimicrobial coating agents, as builders in detergents, and for treating metal surfaces.
Abstract:
Disclosed are paper coating slips containing a) one or more binders, b) a n optional thickener, c) an optional fluorescent or phosphorescent ink, part icularly as an optical brightening agent, d) pigments or fillers, and e) add itional auxiliary agents, e.g. auxiliary flowing agents or other inks. Said paper coating slips are characterized in that at least 40 percent by weight of the total amount of binders a) are provided in the form of a synthetic, w ater-soluble, anionic polymer while less than 50 percent by weight of the to tal amount of binders a) are provided in the form of emulsion polymers.
Abstract:
A process is described for manufacture of packaging, wherein the packaging surface is coated with a polyelectrolyte complex and wherein the polyelectrolyte complex consists of at least one first polymer and at least one second polymer, wherein the first polymer is an anionic polymer and the second polymer is a cationic polymer. The packagings are characterized by good grease barrier properties.
Abstract:
Procedimiento para la impresión de substratos, en el que se transfiere a un molde de impresión una tinta deimprenta o un esmalte de imprenta, que comprende al menos disolvente y agente aglutinante, el molde de impresiónprovisto de tinta de imprenta o esmalte de imprenta se pone en contacto con un substrato, y de este modo la tinta deimprenta o el esmalte de imprenta se transfiere del molde de impresión al substrato, tratándose en el caso de almenos uno de los agentes aglutinantes de un poliol de polieteramina con un peso molecular promedio en número Mnde 500 a 50000 g/mol, que presenta, además de grupos éter incorporados en el esqueleto de polímero, así comogrupos amino secundarios y/o terciarios, al menos grupos funcionales en posición terminal y/o lateral.