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Application filed by Institutul De Cercetari ChimicefiledCriticalInstitutul De Cercetari Chimice
Priority to RO128516ApriorityCriticalpatent/RO97067B1/en
Publication of RO97067B1publicationCriticalpatent/RO97067B1/en
Inventia se refera la o fibra poliesterica cu antistatizare de lunga durata, constituita din polietilentereftalat ce cotine 0,5% pâna la 5% trifosfat de sodiu, are un continut de 0,042% pâna la 0,33% fosfor si un continut de sodiu de 0,15% pâna la 1,25% si rezistivitate de volum 7 X10 la putere 7 omega cm pâna la 3 X 10 la putere 7 omega cm, si la un procedeu de obtinere constând în filarea unor granule de polietilentereftalat ce contine 0,5% pâna la 5% trifosfat de sodiu, fiind uscate la temperatura de 180 degree C timp de 6 h si vid de 0,02...0.5 mm Hg, topitura fiind realizata la temperatura de 275...285 degree C, viteza de filare fiind de 600..1 200 m/min, cablul filat fiind supus etirarii la temperatura de 140 degree C în canalul I si 180 degree C în canalul II, termofixarea la temperatura de 120 degree C în stare relaxata.The invention relates to a long-lasting anti-static polyester fiber consisting of polyethylene terephthalate containing 0.5% to 5% sodium triphosphate, having a content of 0.042% to 0.33% phosphorus and a sodium content of 0 , 15% to 1.25%, and a resistivity of 7 X 10 to a power of 7 ohms cm to 3 x 10 at 7 ohm cm of power, and to a process for the production of polyethylene terephthalate granules containing 0.5% to 5% sodium triphosphate, dried at 180 ° C for 6 hours and a vacuum of 0.02 ... 0.5 mm Hg, the melt being carried out at a temperature of 275 ... 285 ° C, the spin speed being 600-100 m / min, the wire being subjected to ejection at a temperature of 140 ° C in channel I and 180 ° C in channel II, thermofixing at a temperature of 120 ° C in a relaxed state.
RO128516A1987-06-081987-06-08Polyester fibre with long-lasting antistatization and process for producing the same
RO97067B1
(en)
PROCESS TO PURIFY ETHYLENE DIAMINATETRA (METHYLENE PHOSPHONIC ACID) OR 1,4,7,10-TETRAAZACICLOD ODECAN-1,4,7,10-TETRA AZACYCLODODECAN-1,4,7,10-TETRA (METHYLENE PHOSPHONIC ACID) AND PROCESS TO PREPARE ETHYLENE DIAMINATETRA (METHYLENEPHOSPHONIC ACID)
Thermotropic aromatic polyesters with high stiffness, process for their production and their use in the production of moulded articles, filaments, fibres and films
Thermotropic aromatic polyesters having excellent mechanical properties and a good processability, process for preparing them and their use in the production of moulded articles, filaments, fibres and films