Abstract:
The invention relates to a method for producing dendritic or hyperbranched polyurethanes consisting in 1) reacting diols and polyiols which contain at least one tertiary nitrogen atom, at least two hydroxyl groups provided with a different reactivity to isocyanate groups, with diisocyanates or polyisocyanates for obtaining an addition product, the diols and polyiols and diisocyanates or polyisocyanates being selected in such a way that said addition product contains in average one isocyanate group and several hydroxyl groups, or one hydroxyl group and several isocyanate groups; 2) transforming the addition product obtained at the stage 1) into a polyaddition product by an intermolecular reaction of the hydroxyl groups with isocyanate groups, said reaction can be preliminary carried out with a compound containing at least two hydroxyl, mercapto, amino or isocyanate groups; 3) if necessary, reacting the polyaddition product obtained at the stage 2) with the compound containing at least two hydroxyl, mercapto, amino or isocyanate groups.
Abstract:
The invention relates to highly functional highly- and hyper-branched polymers made from polyisobutene derivatives and a method for production thereof.
Abstract:
Disclosed are thermoplastic molding materials containing A) 10 to 99 percent by weight of at least one thermoplastic polyamide, B) 0.01 to 50 percent by weight of B1) at least one highly branched or hyperbranched polycarbonate having a hydroxyl number ranging between 1 and 600 mg KOH/g of polycarbonate (according to DIN 53240, part 2), or B2) at least one highly branched or hyperbranched polyester of type AxBy, wherein x is at least 1.1 and y is at least 2.1, or the mixtures thereof, C) 0 to 60 percent by weight of other additives, the total percentage by weight of components A) to C) amounting to 100 percent.
Abstract:
The invention relates to compositions containing hyperbranched polyesters, to the use of said hyperbranched polyesters in cosmetics and dermatology and to substituted hyperbranched polyesters.
Abstract:
Thermoplastic molding compounds comprising: A) 10 to 98.99 % by weight of at least one thermoplastic polyester, B) 0.01 to 50 % by weight of B1) at least one highly branched or hyperbranched polycarbonate having an OH number ranging from 1 to 600 mg KOH/g of the polycarbonate (according to DIN 53240, part 2), or B2) at least one highly branched or hyperbranched type AxBy polyester, wherein x is at least 1.1 and y is at least 2.1, or the mixtures thereof, C) 1 to 60 % by weight of at least one graft polymer, constituted of: c1) 20 to 80 % by weight of a graft base from a rubber-elastic polymer on the basis of alkyl acrylates having 1 to 8 C atoms in the alkyl group and having a glass transition temperature of below 10 °C, c2) 20 to 80 % by weight of a graft base from c21) 60 to 95 % by weight of styrene or substituted styrenes of the general formula (I), wherein R represents an alkyl group having 1 to 8 C atoms or a hydrogen atom, and R1 represents an alkyl group having 1 to 8 C atoms, and n is 1, 2 or 3, and c22) 5 to 40 % by weight of at least one unsaturated nitrile, D) 0 to 60 % by weight of a copolymer from: d1) 60 to 95 % by weight of styrene or substituted styrenes of the general formula (I) or the mixtures thereof, d2) 5 to 40 % by weight of at least one unsaturated nitrile, E) 0 - 60 % by weight of other additives, whereby the sum of the weight percentages of components A) to E) adds up to 100 %.
Abstract:
The invention relates to the acceleration of the hardening of compositions of epoxy compounds and amino or anhydrid hardeners by adding highly-branched polyetheramines. Said highly branched polyetheramines can comprise terminal hydroxy groups (polyols) and/or amino groups (amino-modified). Said amino-modified highly branched polyetheramines can be obtained by subsequent modification of the terminal hydroxy groups of highly branched polyetheramine polyols.
Abstract:
The invention relates to compositions containing hyperbranched polycarbonates, to the use of said hyperbranched polycarbonates in cosmetics and dermatology and to substituted hyperbranched polycarbonates.
Abstract:
The invention relates to hyperbranched polymers having ethylenically unsaturated groups, which are obtainable by reacting (c) at least one compound having at least one ethylenic double bond with at least one hyperbranched polyester which is obtainable by condensation of (a) at least one dicarboxylic acid or at least one derivative thereof with at least one at least trifunctional alcohol, or (b) at least one tricarboxylic acid or higher polycarboxylic acid or at least one derivative thereof with at least one diol.