摘要:
An olefin polymer composition comprising (ppm with respect to the polymer): a lactone of the furan-2-one type, a phenol in amounts of 50 to 200 ppm, a sterically hindered amine in amounts of 50 to 300 ppm, and an organic phosphite and/or organic phosphonite in amounts of 50 to less than 280 ppm. The polymer composition contains the unsubstituted furan-2-one moiety in amounts ranging from 11 to 49 ppm with respect to the polymer. Staple fibres with high tenacity and elongation at break and non-woven fabrics are prepared from such an olefin polymer composition.
摘要:
L'invention décrit une composition thermoplastique ignifugée à base de résine styrènique comprenant une charge minérale plaquettaire dispersée sous la forme de nanoparticules et de composés ignifugeants. La composition de l'invention présente une bonne résistance au feu et des bonnes propriétés thermiques et mécaniques. La composition de l'invention est utile dans diverses applications et en particulier dans la préparation des caches téléviseurs, des moniteurs et centrales d'ordinateur, d'appareils pour la bureautique, la téléphonie et appareils électriques.
摘要:
Light-stabilized polymers having a high concentration of light-stabilizing moieties covalently bonded along the polymer chain are disclosed. A method of making light-stabilized polymers having a high concentration of light-stabilizing moieties covalently bonded along the polymer chain is also disclosed. Further, a method of making thermoformable articles is disclosed. The method includes mixing one or more light-stabilized polymers having a high concentration of light-stabilizing moieties covalently bonded along the polymer chain with one or more additional polymeric materials, which are substantially free from light-stabilizing moieties.
摘要:
The invention relates to anti-electrostatic polycarbonate compositions which are chlorine and bromine free and non-inflammable and are characterized by good mechanical and thermal properties and by problem-free workability in an injection molding process, that is, good flowability of the molten mass and low tendency to juicing. The invention also relates to the utilization of the inventive polycarbonate molding materials in the production of all sorts of molded bodies and molded parts and to the molded bodies and parts.
摘要:
The invention relates to a synergistic mixture comprising: a) at least one compound selected from the group consisting of the phosphites of the formula (I) to (V), of the phosphonites of the formulae (VI) to (IX) and (XV), of the di/oligophosphonites of the formulae (X) and (XI) and of the phosphinites of the formulae (XII) to (XIV); and b) at least one compound selected from the group consisting of the phosphanes of the formula (XVI), the di/oligophosphanes of the formulae (XVII) and (XVIII), and of the cyclophosphanes of the formula (XIX),and also to a process for stabilizing polymers with respect to thermooxidative degradation by addition and incorporation of a synergistic mixture of this type.
摘要:
An intumescent polymer composition includes a matrix polymer, an acid catalyst source, a nitrogen source and an ionic phyllosilicate synergist having substantial cationic exchange capacity. Particularly preferred ionic phyllosilicates are montmorillonoids whereas pentaerythritol phosphate is a preferred acid catalyst source.
摘要:
Rigid polyurethane or urethane modified polyisocyanurate foams having improved flame resistance are disclosed. The foams are prepared from a composition containing (a) an isocyanate, (b) an isocyanate reactive composition, (c) a hydrocarbon/water blowing agent and (d) a phosphorus material.
摘要:
To produce non-flammable polyamides, a polyamide, a co-polyamide or a polyamide blend is reacted at high temperature with a monoepoxy functional phosphorus compound, where the quantity of the phosphorus compound is 5 to 35 % mass in relation to the total mass, i.e. the polyamide mixture.