METHOD FOR ENHANCED SOLID STATE POLYMERIZATION OF POLYETHYLENE TEREPHTHALATE

• Main Author: STEPHEN D. JENKINS
• Format: Patent
• Language: English; Spanish
• Published: 27.06.2006
• Edition: 7
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

A method for enhancing solid state polymerization of polyethylene terephthalate is disclosed in which at least one monomeric unit of diacid and/or dimethyl ester comprising at least one pendant chemical side group is copolymerized with a diol and a diacid or a dimethyl ester. The at least one pendant chemical side group may include groups chosen from tertiary butyl, hexyl, pentyl, butyl, propyl, ethyl, methyl, nitrosyl (NO2) and sulfonyl (SO2) groups. La presente invencion describe un metodo para mejorar la polimerizacion en estado solido de tereftalato de polietileno en el cual al menos una unidad monomerica de diacido y/o ester de dimetilo que comprende al menos un grupo lateral quimico colgante es copolimerizado con un diol y un diacido o un ester de dimetilo. Al menos un grupo lateral quimico colgante pude incluir los grupos elegidos de los grupos de butilo terciario, hexilo, pentilo, butilo, propilo, etilo, metilo, nitrosilo (NO2) y sulfonilo (SO2).