Consiglio Nazionale Delle Ricerche

Ausimont

Antonio Turturro

Giovanni C Alfonso

Enrico Pedemonte

Claudio Tonelli

Francesco Pilati

Maurizio Toselli

Saverio Russo

Ezio Martuscelli

Ercole Gattiglia

Saverio Ruso

Concetto Puglisi

Thermoplastic polyester compositions comprising polyester resin modified by introducing perfluoropolyether blocks in the polymeric chain characterized by high crystallization rate of the melted mass and therefore by an improved processability. In particular the use of such compositions in a process for preparing molded thermoplastic articles allows working at lower temperatures of the mold and with shorter molding times. Process for preparing modified resins.

Fluoromodified polyesters having improved processability

New polycaprolactam-based polymer compositions have been prepared by polymerising caprolactam in the presence of a quantity of nitrile rubber not exceeding 25% by weight of the total mixture weight, and preferably 5-20% by weight. The polymerisation is conducted in the presence of anionic initiators and anionic polymerisation activators. The new compositions obtained are extremely uniform, and have physical and elasticity characteristics which substantially coincide with nylon-6. There resistance to impact and deformation is however substantially higher.

Polycaprolactam-based polymer compositions

A process for preparing self-extinguishing formed thermoplastic bodies based on polycaprolactam, which consists in polymerizing, by anionic way, in suitable molds .epsilon.-caprolactam, by previously incorporating into said .epsilon.-caprolactam a flame-retardant and optionally at least a known coadjuvant substance, said flame-retardant being composed of red phosphorus powder micro-encapsulated in a synthetic resin, preferably in a melamine resin.

Process for preparing self-extinguishing formed thermo-plastic bodies

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Genoa, Italy

Antonio Turturro