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Process for controlling the change of intrinsic viscosity and transesterification during solid stating of a polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) blend, with an effective amount of an ethylene glycol compound. The process enables the production of a copolymer based on p

Process for controlling the change of intrinsic viscosity and transesterification during solid stating of a polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) blend, with an effective amount of an ethylene glycol compound. The process enables the production of a copolymer based on predefined initial and final IV's and final transesterification level, by varying the solid-stating time and/or effective amount of ethylene glycol. In one embodiment, a relatively greater amount of post-consumer PET (e.g., 70%) having an IV of on the order of 0.72-0.73, is incorporated in the blend to provide a final IV on the order of 0.80-0.85, and a moderate, controlled level of transesterification; the blend is used to injection mold a sleeve layer of a preform. In another embodiment, a substantially transparent neck finish for a preform is made from a PEN/PET blend having an amount of ethylene glycol which enables substantial transesterification, without excessive increase in IV.

대표청구항 ▼

Process for controlling the change of intrinsic viscosity and transesterification during solid stating of a polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) blend, with an effective amount of an ethylene glycol compound. The process enables the production of a copolymer based on p

Process for controlling the change of intrinsic viscosity and transesterification during solid stating of a polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) blend, with an effective amount of an ethylene glycol compound. The process enables the production of a copolymer based on predefined initial and final IV's and final transesterification level, by varying the solid-stating time and/or effective amount of ethylene glycol. In one embodiment, a relatively greater amount of post-consumer PET (e.g., 70%) having an IV of on the order of 0.72-0.73, is incorporated in the blend to provide a final IV on the order of 0.80-0.85, and a moderate, controlled level of transesterification; the blend is used to injection mold a sleeve layer of a preform. In another embodiment, a substantially transparent neck finish for a preform is made from a PEN/PET blend having an amount of ethylene glycol which enables substantial transesterification, without excessive increase in IV. d; a C1-C20alkoxy group which may be substituted; a C6-C20aryloxy group which may be substituted; a C6-C20alkylaryloxy group which may be substituted; a C1-C20alkoxycarbonyl group which may be substituted; a C6-C20aryloxycarbonyl group which may be substituted; cyano group (--CN); carbamoyl group (--C(=O)NH2); a haloformyl group (--C(=O)--X, wherein X is a halogen atom); or formyl group (--C(=O)--H); and, n is an integer of 2 or more). 2. The polyarylene according to claim 1, wherein each of Ar1and Ar2,which may be the same or different, represents independently a phenylene group which may be substituted. 3. The polyarylene according to claim 1, which has the recurring unit shown by formula (I), wherein R1and R2form together a C4-C20saturated or unsaturated ring which may be intervened by an oxygen atom and may be substituted. 4. The polyarylene according to claim 1, wherein the C1-C20hydrocarbon group is a linear or branched C1-C20alkyl group, a linear or branched C2-C20alkenyl group, a linear or branched C2-C20alkynyl group, a linear or branched C3-C20allyl group, a linear or branched C4-C20alkadienyl group, a linear or branched C4-C20polyenyl group, a C6-C18aryl group, a C6-C20alkylaryl group, a C6-C20arylalkyl group, a C4-C20cycloalkyl group, or a C4-C20cycloalkenyl group. 5. A resin composition comprising the polyarylene according to claim 1 and a synthetic organic polymer. 6. A teraryl represented by formula (III) or (IV) below: (wherein: Ar1and Ar2,which may be the same or different, each represents independently an arylene having 4 to 18 carbon atoms, which may be substituted and may contain 1 to 5 nitrogen atoms; R1and R2,which may be the same or different, each represents independently a C1-C20hydrocarbon group which may be substituted, a C1-C20alkoxy group which may be substituted, a C6-C20aryloxy group which may be substituted, an amine group, hydroxy group or a group shown by formula: --Si(R3)(R4)(R5) (wherein R3,R4and R5,which may be the same or different, each represents independently a C1-C20alkyl group, a C6-C20arylalkyl group, a C1-C20alkoxy group or a C6-C20arylalkyloxy group) provided that, in the recurring unit of formula (III), R1and R2may form together a C4-C20saturated or unsaturated ring which may be intervened by an oxygen atom and may be substituted; A1and A2,which may be the same or different, each represents independently hydrogen atom; a C1-C20hydrocarbon group which may be substituted; a C1-C20alkoxy group which may be substituted; a C6-C20aryloxy group which may be substituted; a C6-C20alkylaryloxy group which may be substituted; a C1-C20alkoxycarbonyl group which may be substituted; a C6-C20aryloxycarbonyl group which may be substituted; cyano group (--CN); carbamoyl group (--C(=O)NH2); a haloformyl group (--C(=O)--X, wherein X is a halogen atom); formyl group (--C(=O)--H); and, X1and X2,which may be the same or different, each represents independently a leaving group). 7. A process for producing a polyarylene, which comprises polymerizing a teraryl rep resented by formula (III) or (IV) below: (wherein: Ar1and Ar2,which may be the same or different, each represents independently an arylene having 4 to 18 carbon atoms, which may be substituted and may contain 1 to 5 nitrogen atoms; R1and R2,which may be the same or different, each represents independently a C1-C20hydrocarbon group which may be substituted, a C1-C20alkoxy group which may be substituted, a C6-C20aryloxy group which may be substituted, an amine group, hydroxy group or a group shown by formula: --Si(R3)(R4)(R5) (wherein R3,R4and R5,which may be the same or different, each represents independently a C1-C20alkyl group, a C6-C20arylalkyl group, a C1-C20alkoxy group or a C6-C20arylalkyloxy group); provided that, in the recurring unit of formula (III), R1and R2may form together a C4-C20saturated or unsaturated ring which may be intervened by an oxygen atom and may be substituted; A1and A2,which may be the same or different, each represents independently hydrogen atom; a C1-C20hydrocarbon group which may be substituted; a C1-C20alkoxy group which may be substituted; a C6-C20aryloxy group which may be substituted; a C6-C20alkylaryloxy group which may be substituted; a C1-C20alkoxycarbonyl group which may be substituted; a C6-C20aryloxycarbonyl group which may be substituted; cyano group (--CN); carbamoyl group (--C(=O)NH2); a haloformyl group (--C(=O)--X, wherein X is a halogen atom); or formyl group (--C(=O)--H); and, X1and X2,which may be the same or different, each represents independently a leaving group); to produce a polyarylene represented by formula (I) or (II) below: (wherein each of Ar1,Ar2,R1,R2,A1and A2has the same significance as defined above; and n is an integer of 2 or more). 8. A process for producing a polyarylene, which comprises reacting a metallacyclopentadiene represented by formula (V) or (VI) below: (wherein: Ar1and Ar21which may be the same or different, each represents independently an arylene having 4 to 18 carbon atoms, which may be substituted and may contain 1 to 5 nitrogen atoms; R1and R2,which may be the same or different, each represents independently a C1-C20hydrocarbon group which may be substituted, a C1-C20alkoxy group which may be substituted, a C6-C20aryloxy group which may be substituted, an amine group, hydroxy group or a group shown by formula: --Si(R3)(R4)(R5) (wherein R3,R4and R5,which may be the same or different, each represents independently a C1-C20alkyl group, a C6-C20arylalkyl group, a C1-C20alkoxy group or a C6-C20arylalkyloxy group); provided that, in the metallacyclopentadiene shown by formula (V), R1and R2may form together a C4-C20saturated or unsaturated ring which may be intervened by an oxygen atom and may be substituted; M is a metal from Groups III-V or the lanthanide series of the Periodic Table; L1and L2,which may be the same or different, each represents independently an anionic ligand, provided that L1and L2may be crosslinked; and, X1and X2,which may be the same or different, each represents independently a l