Abstract:
A masterbatch for improving the melt rheology of a thermoplastic polyester. The masterbatch comprises a polyanhydride, a secondary antioxidant, and at least one thermoplastic carrier. In the masterbatch, the weight ratio of the polyanhydride and the secondary antioxidant is 5:1 to 1:5.
Abstract:
Disclosed is an aromatic polycarbonate having at least one acetylenic carbon-carbon triple bond. Said acetylenic aromatic polycarbonate is obtained by subjecting at least one aromatic diol, triol or polyol, at least one carbon dioxide source and at least one acetylenic compound, having said at least one carbon-carbon triple bond, to co-polymerisation or by subjecting at least one aromatic polycarbonate, obtained by reaction between at least one aromatic diol, triol or polyol and at least one carbon dioxide source, to reaction with at least one acetylenic compound, having said at least one carbon-carbon triple bond.
Abstract:
Disclosed is an acetylenic aromatic polyether having at least one acetylenic carbon-carbon triple bond obtained by subjecting at least one aromatic polyether monomer and at least one acetylenic compound, having at least one carbon-carbon triple bond, to co-polymerisation or by subjecting at least one aromatic polyether to reaction with at least one acetylenic compound, having at least one carbon-carbon triple bond.
Abstract:
Disclosed is a novel acetylenic poly(alkylene phthalate) and a composition comprising said acetylenic poly(alkylene phthalate). Said acetylenic poly(alkylene phthalate) is by reaction fitted with at least one acetylenic carbon-carbon triple bond obtained by subjecting at least one (polyalkylene phthalate) to reaction with at least one acetylenic compound or by co-condensing at least one phthalic acid or anhydride or a corresponding acid halide or alkyl ester, at least one alkylene glycol and at least one acetylenic compound. Said acetylenic compound has at least one carbon-carbon triple bond and at least one group reactive to hydroxyl and/or carboxyl groups.
Abstract:
An isolated alicyclic di-ammonium di-carboxylate salt of an alicyclic di-amine and a carboxylic acidis disclosed. The carboxylic acidis selected from the group consisting of formic acid, acetic acid, propionic acid, and butyric acid, whereas the alicyclic di-aminemay be selected from the group consisting of diaminocyclohexane, bis(aminomethyl)cyclohexane, bis(aminomethyl)norbornane, 1,3-diaminoadamantane, -amino-1,3,3-trimethylcyclohexanemethylamine,methylenebis(cyclohexylamine), diaminodecalin, and 1,4-diaminocubane.
Abstract:
A composition comprising an aromatic oligo- or polyimide and a compound comprising at least two residues of oxazoline, or at least two residues of dihydro-1,3-oxazine, being cross-linkable is disclosed.
Abstract:
A method for altering the melt characteristics of a polyester, such as the melt strength, the method comprising the step of melt mixing the polyester, with a tetracarboxylic dianhydride; across-linker and chain extender comprising at least two groups being able to react with a carboxy group and a phenolic hydroxyl group;and a poly functional compound comprising at least two groups selected from the group consisting of non-sterically hindered phenolic hydroxyl groups, and carboxy groups.
Abstract:
Disclosed are novel cross-linkable end-cappers for oligo-and polyimides. End-capped oligo-and polyimides comprising such an end-capper may be cured at a lower temperature compared to oligo-and polyimides end-capped with PEPA.
Abstract:
A composition comprising a polymer, or an oligomer, comprising cross-linking moiety, which moiety comprises a carbon-carbon triple bond; and a molecule comprising a carbon-carbon triple bond, wherein the thermal curing behavior of said molecule is different from the one of said polymer or oligomer.
Abstract:
The present invention relates to an injection molding machine device (1) for increasing the temperature of a polymeric composition by imposing a shear force to the polymeric composition, comprising an adjustable throttling means (2) arranged in a channel (3) adapted to contain the polymeric composition and the adjustable throttling means (2) is adapted to being adjustable to restrict a cross section of said channel (3). The present invention also relates to an injection molding machine, a method for increasing the temperature of a polymeric composition by imposing a shear force to the polymeric composition, and further the use of an adjustable throttling means (3).