CN107001602B - Polyester resin particle, its manufacturing method and molded product therefrom - Google Patents

Polyester resin particle, its manufacturing method and molded product therefrom Download PDF

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Publication number
CN107001602B
CN107001602B CN201580071071.3A CN201580071071A CN107001602B CN 107001602 B CN107001602 B CN 107001602B CN 201580071071 A CN201580071071 A CN 201580071071A CN 107001602 B CN107001602 B CN 107001602B
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polyester
unit
aforementioned
polyester resin
particle
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CN107001602A (en
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太田匡彦
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Kuraray Co Ltd
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Kuraray Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/16Dicarboxylic acids and dihydroxy compounds
    • C08G63/18Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
    • C08G63/181Acids containing aromatic rings
    • C08G63/183Terephthalic acids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/12Making granules characterised by structure or composition
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04Extrusion blow-moulding
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78Preparation processes
    • C08G63/80Solid-state polycondensation

Abstract

The present invention provides a kind of polyester resin particle, the polyester resin particle is by making it carry out polycondensation terephthalic acid (TPA), ethylene glycol, cyclohexanedimethanol or bisphenol A epoxy ethane additive product and polyester melting mixing, then carrying out polyester resin particle made of solid phase, aforementioned polyester is the carboxylate of the polyalcohol of ternary or more, the carboxylic acid has hindered phenol group, the content of the ingredient from aforementioned polyester in aforementioned polyester resin is 0.005~0.04 mass %, also, the inherent viscosity of aforementioned polyester is 0.9~1.5dl/g.The resistance to drawdown of such polyester resin particle is excellent, and the impact resistance of the molded product obtained using the polyester resin particle and tone are good.

Description

Polyester resin particle, its manufacturing method and molded product therefrom
Technical field
The present invention relates to the polyester resin particle for the raw material for being suitable for extrusion and blow molding, its manufacturing method and by it Obtained molded product.
Background technique
The spies such as the transparency, mechanical characteristic, gas barrier property, the every flavour property of the polyester resin such as pet resin Property is excellent.In addition, for polyester resin, wholesomeness few to the worry of residual monomer, harmful additive when forming molded product It is also excellent with safety.Therefore, for polyester resin, their characteristic is efficiently used, was used always in the past as replacement Vinyl chloride resin resin, be widely used as in recent years for holding fruit juice, cold drink, seasoning, oil, cosmetics, washing The hollow container of agent etc. uses.
As the forming method for manufacturing the hollow molded article formed by polyester resin, it is known that following extrusion-blown modling at Type method: it is squeezed out by die hole through the resin of melting plasticising as cylindric parison, is in the soft state phase in the parison Between, it is clamped with mold, is internally blown into the fluids such as air and is formed.This method is compared with injection-blow molding forming method, work Sequence is simple, and the production and molding of mold do not need the technology of height, therefore, cost of equipment, mold manufacturing cost etc. just Preferably, it is produced on a small quantity suitable for multi items.Moreover, with thin object, deep object, big object, the complicated shape with handle etc. can also be manufactured Molded product the advantage that.
On the other hand, the usual melt viscosity of general polyester resin is low, thus to carry out extrusion and blow molding, then it squeezes out Drawdown obviously occurs for parison afterwards, it is difficult to carry out figuration.Therefore, for typically for extrusion-blown modling bottle laminac, Assign resistance to drawdown using method for adding micro crosslinking agent etc., even if can form, the molded product that obtains sometimes it is resistance to Impact is also insufficient.In addition, for typically for polyester resin, when carrying out melt molding or whens when solid phase etc., If be heated for a long time, it is easy to happen oxidation, yellow coloring occurs, molecular weight and molecular weight, generates the heat deteriorations such as gel-like constituent.
In order to solve these problems, in the past, it proposes about the polyester resin for being suitable for extrusion and blow molding, thermoforming etc. Various motions.As one of such conventional art, it is known that the technology of addition hindered phenolic antioxidant is (referring to patent document 1 ~3).
In patent document 1, a kind of copolyester is described, the copolyester is with terephthalic acid units, ethylene glycol list Member and 1,4-CHDM unit are principal component, and the content of hindered phenolic antioxidant is 0.2~1.0 mass %, Germanium Meet defined condition with the content of antimony element (catalyst).It is described in patent document 1 by using with defined composition Catalyst and hindered phenolic antioxidant, can inhibit decomposition reaction when polymerization, polymerize and quickly carry out, tone, the transparency are not Deteriorate, the polyester of high polymerization degree can be obtained, and may also suppress thermal decomposition when molding, therefore, after also not causing molding Tone deteriorate.A kind of polyester and resin composition is described in patent document 2, in the polyester and resin composition, in 100 weight In part polyester resin, be combined with 0.05~1 parts by weight hindered phenolic antioxidant, the polyester resin contain dicarboxylic acid units and Diol units, 1~60 mole of % in diol units are the diol units with cyclic acetal skeleton.Moreover, in patent document 2 It describes by adding aforementioned antioxidant, can inhibit the generation of yellow coloring, gel component.However, by patent document 1 and 2 The impact resistance that the polyester resin of middle record carries out molded product obtained from extrusion and blow molding is insufficient.
Describe a kind of manufacturing method of particle formed by polyester and resin composition in patent document 3, in the method, By carrying out melt polymerization, to respectively obtain of the polyester (A) based on terephthalic acid units and ethylene glycol unit The particle of grain and the polyester (B) based on terephthalic acid units, ethylene glycol unit and cyclohexanedimethanol unit, then, By the particle of polyester (A), the particle of polyester (B) and hindered phenolic antioxidant melting mixing, solid phase is then carried out.So And this method is since process number is more, therefore, it is difficult to which productivity manufactures particle well.In addition, the molding obtained using the particle The transparency of product is sometimes insufficient.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2002-338674 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2007-326890 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2011-252087 bulletin.
Summary of the invention
Problems to be solved by the invention
The present invention is completed to solve the above problems, and it is an object of the present invention to provide can be obtained that resistance to drawdown is excellent, resistance to punching Hitting property and the good molded product of tone, the manufacture suitable for heavy wall molded product, the raw material as extrusion and blow molding polyester Resin particle and its manufacturing method.
Means for solving the problems
The above subject can be solved by providing following polyester resin particles, and the polyester resin particle is by will be to benzene Dioctyl phthalate, ethylene glycol, cyclohexanedimethanol or bisphenol A epoxy ethane additive product and polyester melting mixing make its carry out polycondensation, Then polyester resin particle made of solid phase is carried out, aforementioned polyester is the carboxylate of the polyalcohol of ternary or more, the carboxylic Acid has hindered phenol group, and the dicarboxylic acid units in aforementioned polyester are mainly formed by terephthalic acid units, in aforementioned polyester Diol units are mainly by ethylene glycol unit and cyclohexanedimethanol unit or the unit shape from bisphenol A epoxy ethane additive product At relative to the total amount of the diol units, the content of ethylene glycol unit is 75~98 moles of %, cyclohexanedimethanol unit and is come Content from the unit of bisphenol A epoxy ethane additive product is 2~25 moles of %, comes from aforementioned polyester in aforementioned polyester resin Ingredient content be 0.005~0.04 mass %, also, the inherent viscosity of aforementioned polyester be 0.9~1.5dl/g.
Carrying out molded product made of extrusion and blow molding using aforementioned particles is the preferred embodiment of the present invention.
The above subject can also be solved by providing the manufacturing method of aforementioned polyester resin particle, in the method, be passed through Terephthalic acid (TPA), ethylene glycol, cyclohexanedimethanol or bisphenol A epoxy ethane additive product and aforementioned polyester melting mixing are made It after it carries out polycondensation, is cut and obtains intermediate particle, the intermediate particle is then made to carry out solid phase.
The effect of invention
Resistance to drawdown when the available not only extrusion and blow molding of polyester resin particle of the invention is excellent but also impact resistance Property and the good molded product of tone.Manufacturing method through the invention can easily manufacture such polyester resin particle.
Detailed description of the invention
[Fig. 1] is the figure for indicating the method for solving of half hitch crystallization time.
Specific embodiment
Hereinafter, embodiments of the present invention will be described, but the present invention is not limited thereto.
Polyester resin particle of the invention is by by terephthalic acid (TPA), ethylene glycol, cyclohexanedimethanol or bisphenol-A epoxy Ethane additive product and polyester melting mixing are to make it carry out polycondensation, then carry out polyester resin made of solid phase Grain, aforementioned polyester are the carboxylates of the polyalcohol of ternary or more, which has hindered phenol group, the dicarboxyl in aforementioned polyester Acid unit is mainly formed by terephthalic acid units, and the diol units in aforementioned polyester are mainly by ethylene glycol unit and hexamethylene Dimethanol unit or unit from bisphenol A epoxy ethane additive product are formed, relative to the total amount of the diol units, ethylene glycol list The content of member is 75~98 moles of %, and the content of cyclohexanedimethanol unit and the unit from bisphenol A epoxy ethane additive product is 2~25 moles of %, the content of the ingredient from aforementioned polyester in aforementioned polyester resin are 0.005~0.04 mass %, also, The inherent viscosity of aforementioned polyester is 0.9~1.5dl/g.In the present invention, the polyester resin particle is known as the first particle sometimes.
Polyester of the invention mainly by based on terephthalic acid units dicarboxylic acid units, with ethylene glycol unit and Diol units based on cyclohexanedimethanol unit or unit from bisphenol A epoxy ethane additive product and from aforementioned The unit of polyester is formed.
For the content of the terephthalic acid units in polyester of the invention, relative to the dicarboxylic acids in aforementioned polyester The total amount of unit, usually 80 moles of % or more, preferably 90 moles of % or more, more preferably 95 moles of % or more, further preferably Dicarboxylic acid units in aforementioned polyester are essentially only terephthalic acid units.
Polyester of the invention contains cyclohexanedimethanol unit or the unit from bisphenol A epoxy ethane additive product as second Diol units other than diol units.Herein, aforementioned polyester contains cyclohexanedimethanol unit and adds from bisphenol-A epoxy ethane At at least one party in the unit of object as the diol units other than ethylene glycol unit.By containing cyclohexanedimethanol list Member or the unit from bisphenol A epoxy ethane additive product can reduce the molten of polyester as the diol units other than ethylene glycol unit Therefore point can reduce the forming temperature in direct blow molding.From the viewpoint of impact resistance under from low temperature, aforementioned polyester Cyclohexanedimethanol unit is preferably comprised as the diol units other than ethylene glycol unit.On the other hand, from relative to high concentration Alcohol chemical resistance from the viewpoint of, aforementioned polyester preferably comprise the unit from bisphenol A epoxy ethane additive product work For the diol units other than ethylene glycol unit.
As long as the cyclohexanedimethanol unit in aforementioned polyester is selected from 1,2- cyclohexanedimethanol unit, 1,3- hexamethylene The unit of at least one kind of divalent in dimethanol unit and 1,4 cyclohexane dimethanol unit.Wherein, from the easiness obtained, It in terms of being easy to make aforementioned polyester to become crystalline polyester, in solid phase is not susceptible to intergranular deadlocked aspect, obtains From the aspect of the impact resistance of molded product further increases, cyclohexanedimethanol unit is preferably 1,4-CHDM list Member.
There are cis- bodies and trans- body in cyclohexanedimethanol unit, but in the cyclohexanedimethanol unit in aforementioned polyester Cis- body and the ratio of trans- body be not particularly limited.Wherein, in terms of being easy to make aforementioned polyester to become crystalline polyester, Intergranular deadlocked aspect is not susceptible to when solid phase, from the aspect of the impact resistance of obtained molded product further increases, In the cyclohexanedimethanol unit in aforementioned polyester, cis- body: the ratio of trans- body is preferably the range of 0:100~50:50.
The unit from bisphenol A epoxy ethane additive product in aforementioned polyester is the addition at least 1 on each hydroxyl of bisphenol-A Obtained from a ethylene oxide.In general, the addition amount of ethylene oxide is 2.0~4.0 moles relative to 1 mole of bisphenol-A.
Relative to the total amount of the diol units in aforementioned polyester, cyclohexanedimethanol unit in polyester of the invention and come Total content from the unit of bisphenol A epoxy ethane additive product is 2~25 moles of %.Aforementioned cyclohexanedimethanol unit and from double When the total content of the unit of phenol A ethylene oxide adduct is less than 2 moles of %, under the impact resistance and the transparency of obtained molded product Drop.Aforementioned content is preferably 4 moles of % or more, more preferably 8 moles of % or more.On the other hand, aforementioned content is more than 25 moles of % When, it is difficult to improve solid phase polymerization temperature, productivity decline, moreover, the tone of obtained molded product deteriorates.Aforementioned content is preferably 18 moles of % or less.
Relative to the total amount of the diol units in aforementioned polyester, the content of the ethylene glycol unit in polyester of the invention is 75 ~98 moles of %.When the content of aforementioned ethylene glycol unit is less than 75 moles of %, it is difficult to solid phase polymerization temperature is improved, productivity declines, Moreover, the tone of obtained molded product deteriorates.The content of aforementioned ethylene glycol unit is preferably 82 moles of % or more.On the other hand, preceding When stating the content of ethylene glycol unit and being more than 98 moles of %, the impact resistance and transparency decline of obtained molded product.Aforementioned ethylene glycol The content of unit is preferably 96 moles of % hereinafter, more preferably 92 moles of % or less.
Ethylene glycol unit, hexamethylene two relative to the total amount of the diol units in aforementioned polyester, in polyester of the invention The total content of methanol unit and the unit from bisphenol A epoxy ethane additive product is usually 80 moles of % or more, and preferably 90 rub You are % or more, more preferably 95 moles of % or more.In general, polyester of the invention contains relative to the diol units in aforementioned polyester It is the diethylene glycol (DEG) unit as the by-product in polycondensation reaction of 1~5 mole of % for total amount.
The unit from polyester in aforementioned polyester is by by polyester and terephthalic acid (TPA), ethylene glycol and hexamethylene Alkane dimethanol or bisphenol A epoxy ethane additive product together melting mixing and so that it is carried out polycondensation and containing in aforementioned polyester Unit, the polyester are the carboxylates of the polyalcohol of ternary or more, which has hindered phenol group.It is aforementioned in the polycondensation The polyol unit of polyester, the carboxylic acid with hindered phenol group are contained in aforementioned polyester by ester exchange reaction. Foregoing polyols unit contains the main chain, branch or end in aforementioned polyester.Moreover, a part of foregoing polyols unit at For crosslinking points, play a role as crosslinking agent.On the other hand, a part of the carboxylic acid with hindered phenol group contains preceding The end of polyester is stated, a part is contained together with the polyol unit with the state being bonded with foregoing polyols unit aforementioned poly- In ester.As noted above it is believed that by making not only to improve of the invention gather containing the unit from aforementioned polyester in aforementioned polyester The resistance to drawdown of ester resin particle, and the tone of the molded product made becomes good.Aforementioned polyester is preferably 3 yuan or more The carboxylate of 5 yuan of polyalcohols below.As aforementioned polyester, [ 3- (3, the 5- di-t-butyl -4- hydroxyls of pentaerythrite four can be enumerated Base phenyl) propionic ester ] and 1,3,5- tri- [2- [3- (3,5- di-tert-butyl-hydroxy phenyl) propiono oxygroup] ethyl] hexahydro- 1,3,5- triazine -2,4,6- triketone etc..
The content of the unit from aforementioned polyester in polyester resin of the invention is 0.005~0.04 mass %.This Locate, the content of the ingredient from aforementioned polyester in polyester resin is the list from aforementioned polyester being directed into polyester chain The total amount of member and the ingredient not being fed in polyester chain.It should be noted that thinking to carry out when melting mixing before addition Polyester is stated to mainly contain in polyester chain.When the content of unit from aforementioned polyester is less than 0.005 mass %, polyester tree The resistance to drawdown of rouge particle may decline;In polymerization or when molding, when heating to polyester, which will be easy to send out Raw yellow coloring, the tone of obtained molded product may decline.On the other hand, the content of the unit from aforementioned polyester is super When crossing 0.04 mass %, excessively being carried out because being crosslinked caused by the unit of polyester, melt viscosity may be increased excessively, The impact resistance of obtained molded product may decline.The content of unit from aforementioned polyester be preferably 0.03 mass % with Under, more preferably 0.02 mass % or less.
Relative to the total amount of the entire infrastructure unit in aforementioned polyester, terephthalic acid units in polyester of the invention, Ethylene glycol unit, cyclohexanedimethanol unit, the unit from bisphenol A epoxy ethane additive product and the unit from polyester Total content is preferably 80 moles of % or more, more preferably 90 moles of % or more, further preferably 95 moles of % or more.Before manufacture When stating polyester of the content less than 80 moles of %, when carrying out solid phase, be easy to happen it is deadlocked caused by the softening because of resin, High polymerization degreeization may become difficult.
As needed, aforementioned polyester can have terephthalic acid units, ethylene glycol unit, cyclohexanedimethanol unit, come 2 functionality compounds' units from the unit of bisphenol A epoxy ethane additive product and other than the unit from aforementioned polyester.For For the content (being its total amount in the case that there is two or more unit) of other 2 functionality compounds units, relative to composition The total amount of the entire infrastructure unit of aforementioned polyester, preferably 20 moles of % hereinafter, more preferably 10 moles of % hereinafter, further preferably For 5 moles of % or less.As other the 2 functionality compounds units that can contain in aforementioned polyester, as long as dicarboxylic acid units, Diol units, hydroxycarboxylic acid unit can be 2 functionality chemical combination of aliphatic 2 functionality compounds unit, ester ring type Any unit in object unit, aromatic 2 functionality compounds unit.For example, can enumerate by M-phthalic acid, O-phthalic The aromatic dicarboxylic acids such as acid, 2,6- naphthalenedicarboxylic acid, 4,4'- biphenyl dicarboxylic acid and their ester formative derivative;Hexamethylene two The aliphatic dicarboxylic acids such as formic acid, adipic acid, decanedioic acid, dimeric dibasic acid or their ester formative derivative;Neopentyl glycol, 1,4- fourth The aliphatic diols such as glycol, 1,5- pentanediol, 1,6-HD, diethylene glycol (DEG), dimer diol;The ethyleneoxide addition of bisphenol S The structural unit of divalent derived from object etc..
For aforementioned polyester, in the range for not interfering effect of the invention, in addition to terephthalic acid units, ethylene glycol Unit, cyclohexanedimethanol unit, the unit from bisphenol A epoxy ethane additive product, the unit from aforementioned polyester and on Other than 2 functionality compounds' units except stating, can also have other multi-functional compounds' units.Other multi-functional chemical combination Object unit is more officials as derived from the multi-functional compounds with 3 or more carboxyls, hydroxyl and/or their ester formative base It can property compound unit.The total amount of entire infrastructure unit relative to aforementioned polyester, other multi-functional compounds' units contain Amount (have two or more unit in the case where, be its total amount) be preferably 0.04 mass % hereinafter, more preferably 0.02 mass % with Under, further preferably contain substantially no.As other multi-functional compounds' units, can enumerate by trimellitic acid, equal benzene four Multi-functional compounds' unit etc. derived from acid, trimesic acid, trimethylolpropane and glycerol.
In addition, as needed, aforementioned polyester can also have by the unitary carboxylic other than the aforementioned carboxylic acid with hindered phenol group Other mono-functionalizations derived from least one kind of monofunctional compounds in acid, monohydric alcohol and their ester formative derivative Compound units.Other monofunctional compounds' units are functioned as end-caps unit, carry out point in aforementioned polyester The sealing end of subchain terminal groups and/or branch terminals base prevents the generation of the excessive crosslinking and gel in aforementioned polyester.It is aforementioned poly- When ester has other such monofunctional compounds' units, the total amount of the entire infrastructure unit relative to aforementioned polyester, other The content (being its total amount in the case where having two or more unit) of monofunctional compounds' unit is preferably 1 mole of % hereinafter, more Preferably 0.5 mole of % or less.When the content of other monofunctional compounds' units in aforementioned polyester is more than 1 mole of %, manufacture Polymerization speed when aforementioned polyester is slack-off, and productivity is easily reduced.As other monofunctional compounds' units, can enumerate by selecting From derived from the monofunctional compounds in benzoic acid, 2,4,6- trimethoxybenzoic acid, 2- naphthoic acid, stearic acid and stearyl alcohol Unit etc..
Polyester resin particle of the invention is by by terephthalic acid (TPA), ethylene glycol, cyclohexanedimethanol or bisphenol-A epoxy Ethane additive product and aforementioned polyester melting mixing are to carry out polycondensation, then carry out product made of solid phase.
By by terephthalic acid (TPA), ethylene glycol, cyclohexanedimethanol or bisphenol A epoxy ethane additive product and aforementioned polynary Method of the ester melting mixing to carry out polycondensation is not particularly limited, the following methods can be given: using terephthalic acid (TPA) or its ester Formative derivative, ethylene glycol, cyclohexanedimethanol or bisphenol A epoxy ethane additive product, aforementioned polyester and as needed 2 functionality compounds, multi-functional compounds or monofunctional compounds except above-mentioned as raw material, carry out esterification or Ester exchange reaction, the polyester oligomer then made carry out melt polycondensation.Specifically, the following methods can be given: using pair Phthalic acid, ethylene glycol and cyclohexanedimethanol or bisphenol A epoxy ethane additive product carry out esterification or ester exchange reaction Afterwards, the method added aforementioned polyester into obtained polyester oligomer and it is made to carry out melt polycondensation;Using terephthalic acid (TPA), Ethylene glycol, cyclohexanedimethanol or bisphenol A epoxy ethane additive product and aforementioned polyester carry out esterification or ester exchange reaction Afterwards, the method that the polyester oligomer made carries out melt polycondensation;Deng.Aforementioned polyester can carry out esterification or transesterification It adds, can also be added after carrying out these reactions before reaction.In addition, about the raw material other than aforementioned polyester, also suitably Ground can add before carrying out esterification or ester exchange reaction, can also add after carrying out these reactions.
As described above, one of the features of the present invention is by by aforementioned polyester and terephthalic acid (TPA), ethylene glycol and hexamethylene Alkane dimethanol or bisphenol A epoxy ethane additive product together melting mixing to make its carry out polycondensation.Polyester resin particle as a result, Resistance to drawdown improves.In addition, the heat deterioration of polyester resin when can inhibit subsequent polymerization process, molding, it is good to can be obtained tone Good molded product.
For above-mentioned esterification or ester exchange reaction, by above-mentioned raw material, polymerization catalyst and as needed The additives such as anti-coloring agent be encased in reactor, in the case where absolute pressure is about 0.5MPa pressurization below or under normal pressure, in 160~280 DEG C of temperature carries out while evaporating the water generated or alcohol.
It is preferably poly- to what is obtained as needed for the melt polycondensation reaction after esterification or ester exchange reaction The additives such as above-mentioned raw material, polycondensation catalyst and anti-coloring agent are added in ester oligomer, under 1kPa decompression below, in 260~290 DEG C of temperature carries out, until obtaining the polyester of desired viscosity.The reaction temperature of melt polycondensation reaction is less than 260 DEG C when, the polymerization activity of polymerization catalyst is low, may cannot get the polyester of targeted degree of polymerization.On the other hand, melt polymerization Reaction temperature when being more than 290 DEG C, decomposition reaction is easy to carry out, as a result, may cannot get the polyester of targeted degree of polymerization.Melting contracting It is poly- to react the intermittent polycondensation device that such as groove profile can be used, the continous way polycondensation dress including the revolving horizontal type reactor of 2 axis It sets etc. and to carry out.
As polymerization catalyst used in above-mentioned polycondensation, the compound of Germanium, antimony element, titanium elements is preferably comprised. As the compound containing antimony element, antimony trioxide, antimony chloride, antimony acetate etc. can be used, as the compound containing Germanium, Germanium dioxide, germanium tetrachloride, tetraethoxy germanium etc. can be used, as the compound containing titanium elements, four isopropyl of metatitanic acid can be used Ester, butyl titanate etc..Wherein, from polymerization catalyst, obtained polyester physical property and cost from the aspect of, preferably three oxygen Change antimony and germanium dioxide.When using polycondensation catalyst, additive amount be preferably based on the quality of dicarboxylic acid component 0.002~ Amount in the range of 0.8 mass %.
When using anti-coloring agent in above-mentioned polycondensation, for example, can be used using phosphorous acid as the phosphate cpd of representative or its ester, It can be used alone, and can also be used in combination of two or more.As phosphate cpd, for example, can enumerate phosphorous acid, phosphite ester, phosphoric acid, Trimethyl phosphate, triphenyl phosphate etc..The usage amount of anti-coloring agent is preferred relative to the total amount of dicarboxylic acid component and diester ingredient In the range of 80~1000ppm.In addition, colouring caused by order to inhibit the thermal decomposition because of polyester, cobalt acetate is preferably added Equal cobalt compounds, usage amount is relative to the total amount of dicarboxylic acid component and diester ingredient more preferably in the range of 100~1000ppm It is interior.
In above-mentioned polycondensation, in order to form terephthalic acid units, terephthalate can be used.The terephthalate Alcohol part is not particularly limited, and can enumerate the monohydric alcohols such as methanol, ethyl alcohol;Ethylene glycol, the ring of structural unit as aforementioned polyester Polyalcohols such as hexane dimethanol, bisphenol A epoxy ethane additive product etc..
In above-mentioned polycondensation, in order to form ethylene glycol unit, the monoesters or diester of ethylene glycol can be used.The carboxylic acid of the carboxylate Part is not particularly limited, and can enumerate the monocarboxylic acids such as formic acid, acetic acid, propionic acid.
Consider from treatability etc., the inherent viscosity of the polyester as obtained from melt polycondensation preferably 0.4~ In the range of 0.9dl/g.If the inherent viscosity of aforementioned polyester as obtained from melt polycondensation will gather less than 0.4dl/g When ester takes out from reactor, melt viscosity is too low, it is difficult to the shapes such as strands shape or sheet extrusion, and, it is difficult to equably Cut into graininess.In addition, will the polyester as obtained from melt polycondensation carry out solid phase when, molecular weight will need Will for a long time, productivity may reduce.The inherent viscosity of aforementioned polyester is more preferably 0.5dl/g or more, further preferably 0.6dl/g or more.On the other hand, if the inherent viscosity of aforementioned polyester is higher than 0.9dl/g, melt viscosity is excessively high, accordingly, it is possible to It is difficult to take out polyester from reactor, alternatively, coloring may be easy to produce due to heat deterioration.The inherent viscosity of aforementioned polyester is more Preferably 0.85dl/g is hereinafter, further preferably 0.8dl/g or less.
After the polyester obtained in the manner described above to be extruded into the shapes such as strands shape, sheet and carries out cooling, line is utilized Expect that pelleter (strand cutter), slicer (sheet cutter) etc. by its severing, manufacture cylindric, elliptic cylindrical shape, circle The intermediate particle of the shapes such as plate, dice shape.Cooling after extrusion above-mentioned is for example using using the water cooling of sink, use Method, the air-cooling etc. of cooling drum carry out.
In order to further increase the degree of polymerization of the intermediate particle obtained as described above, which is subjected to solid polycondensation It closes.It is preferred that a part crystallization of polyester is heated and made in advance before carrying out solid phase.It operates, can prevent in this way Only particle when solid phase is deadlocked.The temperature of crystallization is preferably 100~180 DEG C.It, can be true as the method for crystallization It is crystallized in empty tumbler, can also be heated and be crystallized in air circulating type heating device.It is followed in air When being heated in ring type heating device, internal temperature is preferably 100~160 DEG C.Using air circulating type heating device into In the case where row heating, compared with the case where using vacuum tumbler to be crystallized, heat transfer is good, therefore can be shortened crystallization Time required for changing, device are also cheap.Time required for crystallizing is not particularly limited, and usually 30 minutes~24 hours Left and right.It by particle drying is also preferred in the temperature less than 100 DEG C before crystallization.
The temperature of solid phase is preferably 170~250 DEG C.When the temperature of solid phase is less than 170 DEG C, solid phase when Between it is elongated, productivity may decline.The temperature of solid phase is more preferably 175 DEG C or more, further preferably 180 DEG C or more. On the other hand, when the temperature of solid phase is more than 250 DEG C, particle may be deadlocked.The temperature of solid phase is more preferably 240 DEG C Hereinafter, further preferably 230 DEG C or less.The time of solid phase is usually 5~70 hours or so.In addition, in solid phase When the catalyst used in melt polymerization can also coexist.
In addition, solid phase preferably carries out under reduced pressure or in the non-active gas such as nitrogen.In addition, in order not to which particle occurs Between it is deadlocked, preferably on one side making to carry out solid polycondensation while particle is mobile using the method appropriate such as rotation method, gas fluidized bed method It closes.Pressure when carrying out solid phase under reduced pressure is preferably 1kPa or less.
For aforementioned polyester resin, in the range for not interfering effect of the invention, other additives, example can be contained Such as, the stabilizers such as the colorants such as dyestuff, pigment, ultraviolet absorbing agent, antistatic agent, fire retardant, flame retardant, lubrication can be enumerated Agent, plasticizer, inorganic filler etc..The content of these additives in aforementioned polyester resin is preferably 10 mass % hereinafter, more excellent Select 5 mass % or less.
The inherent viscosity for carrying out polyester obtained from solid phase needs in the range of 0.9~1.5dl/g.Inherent viscosity When less than 0.9dl/g, not only resistance to drawdown deteriorates, but also the intensity of obtained molded product, impact resistance and transparency decline.It is special Property viscosity is preferably 1.0dl/g or more, more preferably 1.05dl/g or more.On the other hand, when inherent viscosity is more than 1.5dl/g, Melt viscosity becomes excessively high, and melt-moldability may decline, and productivity also reduces.Inherent viscosity be preferably 1.4dl/g with Under, more preferably 1.3dl/g or less.
From the viewpoint of further increasing from the transparency of obtained molded product, polyester tree obtained from solid phase is carried out Half hitch crystallization time under the crystallization peak temperature of the polyester contained in rouge particle is preferably 30 minutes or more.When the half hitch crystallization Between more preferably 30 minutes or more." crystallization peak temperature " so-called in the present invention, refers to using differential thermometric analysis meter (DSC), With amorphous polyester resin particle is warming up to the temperature (280 DEG C) of fusing point or more from room temperature (20 DEG C) by 10 DEG C/min and is measured Along with the temperature of the exothermal peak of crystallization.In addition, " half hitch crystallization time under crystallization peak temperature " refers to, differential is being used Polyester resin particle is warming up to the temperature (280 DEG C) of fusing point or more and makes its melting, then with -50 by thermometric analysis meter (DSC) DEG C/min quenching to crystallization peak temperature, then under the crystallization peak temperature keep carry out isothermal crystalization when, from reach knot Crystallization peak temperature starts, the time until the calorific value generated by isothermal crystalization becomes the 1/2 of total calorific value.
From prevent in solid phase tumbler internal particle occur it is deadlocked from the viewpoint of, aforementioned polyester resin particle In the crystalline fusion enthalpy of polyester that contains be preferably 20J/g or more.As containing in carrying out particle obtained from solid phase Therefore the polyester crystallized under long-time high temperature has crystalline fusion enthalpy big in this way.Crystalline fusion enthalpy is more preferably 23J/g or more.Crystalline fusion enthalpy is usually 60J/g or less.
By the way that obtained polyester resin particle is carried out melt molding, various molded products can be obtained.Forming method is without spy It does not limit, the various melt molding methods such as extrusion molding, injection moulding can be used.In addition, can also be further to melt molding product It carries out secondary operation and obtains molded product.Wherein, viscosity when polyester resin particle of the invention is due to melt molding is high, thus Suitable for extrusion molding.It is preferred that the temperature of resin combination when by extrusion molding be set as (+10 DEG C of the fusing point of polyester resin)~ Temperature in the range of (+70 DEG C of the fusing point of polyester resin) is more preferably set as (+10 DEG C of the fusing point of polyester resin)~(poly- + 40 DEG C of the fusing point of ester resin) in the range of temperature.By relatively fusing point at a temperature of squeezed out, can inhibit vertical It stretches.
Using polyester and resin composition of the invention, using such as extrusion moldings such as T die head method, inflation method manufacture sheet material, When film, do not occur drawdown, reduced amplitude, film wave, non-fusant, can with high production rate manufacture high-quality sheet material or film.Moreover, In the case where carrying out the secondary operation such as thermoforming using the sheet material or film obtained as described above, it is being molded into depth support pulling shaping When product, large-scale molded product, drawdown is small, and the degree of crystallization is good, in the work for applying the external force such as vacuum attraction or compressed air In sequence, it is not susceptible to uneven thickness, albefaction, target molded product can be obtained with good plastic property.
Moreover, being particularly suitable for using polyester resin particle of the invention being extrusion and blow molding in extrusion molding.It squeezes The method of blow molding is not particularly limited out, can be carried out similarly with previously known extrusion and blow molding method.For example, can It is carried out using following methods: polyester resin particle melting extrusion of the invention being formed to cylindric parison, at the parison It during soft state, is clamped with blow molding with mold, is blown into the gases such as air, the rule for the shape for being expanded into parison along mold cavity Fixed hollow shape.In the case where having used polyester resin particle of the invention, the drawdown of the parison of extrusion is good, can give birth to Yield manufactures hollow molded article well.
The transparency of the molded product obtained as described above is excellent, and appearance, tone are good, mechanical strength especially impact resistance Property it is high.Moreover, each characteristic such as gas barrier property, every flavour property, moisture-proof, resistance to chemical reagents is also excellent, therefore, it can be used for various uses.Separately Outside, it can also be formed with the molded product with the stepped construction of other thermoplastic resins etc..
Polyester resin particle with following characteristics is also it is preferable that the dicarboxylic acid units in aforementioned polyester are mainly by benzene Dioctyl phthalate unit is formed, and the diol units in aforementioned polyester mainly by ethylene glycol unit and cyclohexanedimethanol unit or come from The unit of bisphenol A epoxy ethane additive product is formed, and relative to the total amount of the diol units, the content of ethylene glycol unit is 75~98 The content of mole %, cyclohexanedimethanol unit and the unit from bisphenol A epoxy ethane additive product is 2~25 moles of %, aforementioned Polyester resin contains 0.005~0.04 ingredient of the mass % from polyester, which is the carboxylic acid of the polyalcohol of ternary or more Ester, the carboxylic acid have a hindered phenol group, and the inherent viscosity of aforementioned polyester is 0.9~1.5dl/g, crystalline fusion enthalpy be 20J/g with On, and half hitch crystallization time is 30 minutes or more.Had using the molded product that the polyester resin particle obtains especially excellent The transparency.
Aforementioned polyester mainly by based on terephthalic acid units dicarboxylic acid units, with ethylene glycol unit, hexamethylene Diol units based on dimethanol unit or unit from bisphenol A epoxy ethane additive product and the unit from polyester It is formed.Dicarboxylic acid units, diol units and unit from polyester it is respective constitute it is same as the first particle.
The content of the unit from aforementioned polyester in aforementioned polyester resin is 0.005~0.04 mass %.From aforementioned The content of the unit of polyester is preferably 0.03 mass % hereinafter, more preferably 0.02 mass % or less.
Terephthalic acid units, second two relative to the total amount of the entire infrastructure unit in aforementioned polyester, in aforementioned polyester Alcohol unit, cyclohexanedimethanol unit, the unit from bisphenol A epoxy ethane additive product and the unit from aforementioned polyester Total content is preferably 80 moles of % or more, more preferably 90 moles of % or more, further preferably 95 moles of % or more.
As needed, aforementioned polyester can also have terephthalic acid units, ethylene glycol unit, cyclohexanedimethanol unit, 2 functionality compounds' units other than unit from bisphenol A epoxy ethane additive product and the unit from polyester.Relative to The total amount of the entire infrastructure unit of aforementioned polyester is constituted, the content of other 2 functionality compounds units (has two or more unit In the case where, be its total amount) be preferably 20 moles of % hereinafter, more preferably 10 moles of % hereinafter, further preferably 5 moles of % with Under.As other the 2 functionality compounds units that can contain in aforementioned polyester, can enumerate as can be poly- in the first particle Other 2 functionality compounds units for containing in ester and those of be illustrated above.
For aforementioned polyester, in the range for not interfering effect of the invention, in addition to terephthalic acid units, ethylene glycol Unit, cyclohexanedimethanol unit, the unit from bisphenol A epoxy ethane additive product, the unit from polyester and it is above-mentioned it Other than 2 outer functionality compounds' units, can also have other multi-functional compounds' units.Whole relative to aforementioned polyester The total amount of structural unit, the content (being its total amount in the case that there is two or more unit) of other multi-functional compounds' units Preferably 0.04 mass % is hereinafter, more preferably 0.02 mass % is hereinafter, further preferably contain substantially no.As other more officials Can property compound unit, can enumerate as other multi-functional compounds' units that can contain in the polyester in the first particle and Those of be illustrated above.
As needed, aforementioned polyester can also have by other than the aforementioned carboxylic acid with hindered phenol group monocarboxylic acid, one Member it is pure and mild they ester formative derivative at least one kind of monofunctional compounds derived from other monofunctional compounds it is single Member.When aforementioned polyester has other such monofunctional compounds' units, entire infrastructure unit relative to aforementioned polyester Total amount, the content (have two or more unit in the case where, be its total amount) of other monofunctional compounds' units are preferably 1 to rub That % is hereinafter, more preferably 0.5 mole of % or less.As other monofunctional compounds' units, can enumerate as can be at first Other monofunctional compounds' units for containing in polyester in grain and those of be illustrated above.
Half hitch crystallization time under the crystallization peak temperature of the polyester contained in aforementioned polyester resin particle needs to be 30 points It is more than clock.When half hitch crystallization time was less than 30 minutes, the transparency decline of obtained molded product.More preferable half hitch crystallization time is 40 minutes or more.The definition of the half hitch crystallization time and preferred scope are identical as the first particle.
The crystalline fusion enthalpy of the polyester contained in aforementioned polyester resin particle needs for 20J/g or more.Crystalline fusion enthalpy is excellent It is selected as 23J/g or more.On the other hand, crystalline fusion enthalpy is usually 60J/g or less.
The inherent viscosity of aforementioned polyester needs in the range of 0.9~1.5dl/g.The inherent viscosity of aforementioned polyester is preferably 1.0dl/g or more, more preferably 1.05dl/g or more.On the other hand, the inherent viscosity of aforementioned polyester be preferably 1.4dl/g with Under, more preferably 1.3dl/g or less.
Aforementioned polyester resin can not interfere the range of effect of the invention to contain other additives, for example, dye can be enumerated The stabilizers such as the colorants such as material, pigment, ultraviolet absorbing agent, antistatic agent, fire retardant, flame retardant, lubricant, plasticizer, Inorganic filler etc..The content of these additives in aforementioned polyester resin is preferably 10 mass % hereinafter, more preferably 5 mass % Below.
The manufacturing method of aforementioned polyester resin particle is not particularly limited, preferably as manufacture the first particle method and Method described above, that is, by by terephthalic acid (TPA), ethylene glycol, cyclohexanedimethanol or bisphenol-A epoxy ethane addition Then object and aforementioned polyester melting mixing are cut to make it carry out polycondensation and obtain intermediate particle, then made in this Between particle carry out solid phase method.
In the case where using anti-coloring agent in above-mentioned polycondensation, for example, can be used using phosphorous acid as the phosphoric acid chemical combination of representative Object or its ester, can be used alone, and can also be used in combination of two or more.As phosphate cpd, for example, phosphorous acid, phosphorous acid can be enumerated Ester, phosphoric acid, trimethyl phosphate, triphenyl phosphate etc..The usage amount of anti-coloring agent is relative to dicarboxylic acid component and diester ingredient Total amount is preferably in the range of 80~1000ppm.In addition, being coloured caused by order to inhibit the thermal decomposition because of polyester, preferably add Add the cobalt compounds such as cobalt acetate, usage amount is relative to the total amount of dicarboxylic acid component and diester ingredient preferably in 100~1000ppm In the range of.
Embodiment
Hereinafter, illustrating the present invention in further detail by embodiment, but the present invention is not by any limit of these embodiments System.
(1) inherent viscosity
It is viscous in the characteristic of 30 DEG C of temperature measuring polyester using the equal mass mixings object of phenol and tetrachloroethanes as solvent Degree.
(2) glass transition temperature (Tg), crystalline fusion enthalpy (Δ Hm) and half hitch crystallization time
Using differential scanning calorimetry (DSC) (TA イ Application ス Star Le メ Application ト TA Q2000 type), with 10 DEG C/min of heating The glass transition temperature (Tg) and crystalline fusion enthalpy (Δ Hm) of velocity determination polyester (particle after solid phase).It needs to illustrate , for glass transition temperature (Tg), with 10 DEG C/min of heating rate by polyester (particle after solid phase) 280 DEG C are warming up to from room temperature (20 DEG C), then amorphous particle is obtained, then again with 10 to 20 DEG C with -50 DEG C/min of quenchings DEG C/min heating rate heat up, calculated using data at this time.
Using differential scanning calorimetry (DSC) (TA イ Application ス Star Le メ Application ト TA Q2000 type), with 10 DEG C/min of heating Polyester (particle after solid phase) is warming up to 280 DEG C from room temperature (20 DEG C) by speed, then with -50 DEG C/min of quenchings to 20 DEG C, amorphous particle is obtained, is then warming up to the temperature (280 DEG C) of fusing point or more with 10 DEG C/min of heating rate again.Describe Point of the heat at this time relative to temperature, obtains curve, and the temperature (crystallization of the exothermal peak of accompanying crystallization is found out by curve obtained Change peak temperature).Then, the polyester melted at 280 DEG C is quenched to aforementioned peak temperature with -50 DEG C/min of cooling rate, then It is kept under aforementioned crystalline peak temperature, carries out isothermal crystalization.Describe point of the accumulation heat relative to the time at this time, obtains Since curve become total reaching crystallization peak temperature, to the calorific value generated by isothermal crystalization by curve obtained measurement Thus time until the 1/2 of calorific value finds out half hitch crystallization time (second).Asking for half hitch crystallization time is illustrated that in Fig. 1 The figure of solution method.
(3) color of resin (b value)
According to ASTM-D2244(color scale system2), use Nippon Denshoku Industries Co., Ltd.'s colour examining color Difference meter " ZE-2000 ", measures the color of resin (b value) of polyester resin particle.
(4) resin pressure
It is 290 in barrel maximum temperature using extrusion and blow molding device (Co., Ltd. タ Ha ラ system " MSE-40E type ") DEG C, die head temperature be 250 DEG C, under conditions of molding cycle is 15 seconds, screw speed 22rpm, mold temperature are 20 DEG C, squeeze out The transparent bottle container (27.5g ± 0.5g) that blow molding is 220mL at volume.The resin that die head is born when measurement bottle molding Pressure.
(5) impact resistance
In the polyester in empty container be packed into water 220ml, covered with screw lid, be repeated fallen to from the height of 1.5m it is mixed The operation in solidifying soil face, until the hollow container ruptures.Number evaluation impact resistance is fallen when rupturing according to hollow container.
Embodiment 1
[ melt polymerization ]
Production by 100.0 mass parts of terephthalic acid (TPA), 38.1 mass parts of ethylene glycol and hexamethylene-Isosorbide-5-Nitrae-dimethanol CHDM, The mixing ratio (cis- body/trans- body) of cis- body and trans- body is 30/70 ] slurry that 13.0 mass parts are formed, is added thereto 0.043 mass parts of 0.012 mass parts of germanium dioxide, 0.012 mass parts of phosphorous acid and cobalt acetate.(absolute pressure under elevated pressure The slurry 0.25MPa) is heated to 250 DEG C of temperature, carries out esterification, manufactures oligomer.Then, the oligomer that will be obtained Polycondensation slot is moved to, relative to 100 mass parts of oligomer, adds [ 3-(3, the 5- bis- of pentaerythrite four as polyester thereto Tert-butyl-hydroxy phenyl) propionic ester ] 0.024 mass parts and the bis- (2,6- di-t-butyl -4- first of 3,9- as anti-coloring agent Phenoxyl) four oxa- -3,9- of -2,4,8,10- two phospha spiral shell [ 5,5 ] hendecane, 0.048 mass parts.Under the decompression of 1hPa, In 280 DEG C of temperature, make oligomer melt polycondensation above-mentioned, formation characteristic viscosity is the polyester resin of 0.70dl/g.It will obtain Polyester resin be extruded into strands shape from nozzle and be water-cooled, be then cut into that cylindric (diameter is about 2.5mm, and length is about For 2.5mm), the intermediate particle of polyester resin is obtained.
[ crystallization of intermediate particle ]
The intermediate particle of polyester resin obtained from operating as described above is put into rotary type vacuum solid polycondensation and is attached together It is 24 hours dry in 90 DEG C with 1hPa in setting, next carry out crystallizing for 10 hours in 160 DEG C.
[ solid phase ]
After above-mentioned crystallization, obtained in 200 DEG C of progress, 38 hours solid phases containing copolyester with 1hPa Polyester resin particle (solid phase particle).Utilize the inherent viscosity of method above-mentioned measurement copolyester, result 1.15dl/ g.In addition, the b value of the solid phase particle measured using method above-mentioned, result is -1.10.Utilize 1H-NMR spectrum (dress Set: Japan Electronics society system " JNM-GX-500 type ", solvent: deuterated trifluoroacetic acid) confirm the monomer component for constituting the copolyester Ratio, result is terephthalic acid units: ethylene glycol unit: 1,4-CHDM unit: diethylene glycol (DEG)=100.0: 82.8:14.2:3.0(molar ratio), the content of the unit from polyester is 0.025 mass %.Method above-mentioned will be utilized, made Tg, Δ Hm and the half hitch crystallization time of copolyester obtained from being measured with differential scanning calorimetry (DSC) to polyester resin particle It is shown in table 1.
[ molding of extrusion-blown modling bottle ]
Using polyester resin particle obtained from operating as described above, the method system recorded in " (4) resin pressure " is utilized Make cylindrical bottles.Resin pressure at this time is 21.2MPa.Observe by the naked eye to the oral area of obtained cylindrical bottles the transparency into Row evaluation.In addition, being evaluated using the method recorded in " (5) impact resistance " the cylindrical bottles.Their result is shown In table 1.
Embodiment 2
Additive amount relative to the polyester of 100 mass parts of oligomer is changed to 0.009 mass parts, by anti-coloring agent Additive amount is changed to 0.019 mass parts, in addition to this, operates similarly with example 1, and manufactures polyester resin particle, uses this Particle makes cylindrical bottles, and evaluates them.It the results are shown in table 1.Constitute the obtained monomer of copolyester at The ratio divided is terephthalic acid units: ethylene glycol unit: 1,4 cyclohexane dimethanol unit: diethylene glycol (DEG)=100.0:82.6: 14.5:2.9(molar ratio), the content of the unit from polyester is 0.010 mass %.
Embodiment 3
Anti-coloring agent is not added into oligomer, in addition to this, is operated similarly with example 1, polyester resin is manufactured Grain makes cylindrical bottles using the particle, and evaluates them.It the results are shown in table 1.Constitute obtained copolyester Monomer component ratio be terephthalic acid units: ethylene glycol unit: 1,4 cyclohexane dimethanol unit: diethylene glycol (DEG)= 100.0:80.9:16.0:3.1(molar ratio), the content of the unit from polyester is 0.025 mass %.
Embodiment 4
Additive amount relative to the polyester of 100 mass parts of oligomer is changed to 0.005 mass parts, also, not to low Anti-coloring agent is added in polymers, in addition to this, is operated similarly with example 1, and is manufactured polyester resin particle, is used the particle system Make cylindrical bottles, and they are evaluated.It the results are shown in table 1.Constitute the ratio of the monomer component of obtained copolyester Rate is terephthalic acid units: ethylene glycol unit: 1,4 cyclohexane dimethanol unit: diethylene glycol (DEG)=100.0:83.2:14.0:2.8 (molar ratio), the content of the unit from polyester are 0.005 mass %.
Embodiment 5
Using by 18.3 matter of 100.0 mass parts of terephthalic acid (TPA), 35.5 mass parts of ethylene glycol and hexamethylene -1,4- dimethanol Measure part formed slurry, the additive amount relative to the polyester of 100 mass parts of oligomer is changed to 0.009 mass parts, not to Anti-coloring agent is added in oligomer, in addition to this, is operated similarly with example 1, and is manufactured polyester resin particle, is used the particle Cylindrical bottles are made, and they are evaluated.It the results are shown in table 1.Constitute the monomer component of obtained copolyester Ratio is terephthalic acid units: ethylene glycol unit: 1,4 cyclohexane dimethanol unit: diethylene glycol (DEG)=100.0:77.1:20.0: 2.9(molar ratio), the content of the unit from polyester is 0.010 mass %.
Embodiment 6
It has used by 100.0 mass parts of terephthalic acid (TPA), 42.3 mass parts of ethylene glycol and hexamethylene -1,4- dimethanol 4.6 In addition to this slurry that mass parts are formed operates similarly to Example 5, manufacture polyester resin particle, made using the particle Cylindrical bottles, and they are evaluated.It the results are shown in table 1.Constitute the ratio of the monomer component of obtained copolyester For terephthalic acid units: ethylene glycol unit: 1,4 cyclohexane dimethanol unit: diethylene glycol (DEG)=100.0:92.0:5.0:3.0(rubs That ratio), the content of the unit from polyester is 0.010 mass %.
Embodiment 7
It has used by 100.0 mass parts of terephthalic acid (TPA), 38.1 mass parts of ethylene glycol and hexamethylene -1,4- dimethanol 13.0 The slurry that mass parts are formed, be changed to 100 hours, in addition to this, is operated similarly to Example 5 the time of solid phase, Polyester resin particle is manufactured, makes cylindrical bottles using the particle, and evaluate them.It the results are shown in table 1.It constitutes The ratio of the monomer component of obtained copolyester is terephthalic acid units: ethylene glycol unit: 1,4 cyclohexane dimethanol list Member: diethylene glycol (DEG)=100.0:83.1:14.0:2.9(molar ratio), the content of the unit from polyester is 0.010 mass %.
Embodiment 8
It has used by 100.0 mass parts of terephthalic acid (TPA), 38.1 mass parts of ethylene glycol and hexamethylene -1,4- dimethanol 13.0 The slurry that mass parts are formed, be changed to 18 hours, in addition to this, is operated similarly to Example 5 the time of solid phase, is made Polyester resin particle is made, makes cylindrical bottles using the particle, and evaluate them.It the results are shown in table 1.It is configured The ratio of the monomer component of the copolyester arrived is terephthalic acid units: ethylene glycol unit: 1,4 cyclohexane dimethanol unit: Diethylene glycol (DEG)=100.0:83.1:14.0:2.9(molar ratio), the content of the unit from polyester is 0.010 mass %.
Embodiment 9
It has used by 100.0 mass parts of terephthalic acid (TPA), 42.6 mass parts of ethylene glycol and bisphenol-A epoxy ethane 2mol addition In addition to this slurry that 11.4 mass parts of object are formed operates similarly with example 1, manufacture polyester resin particle, use this Grain production cylindrical bottles, and they are evaluated.It the results are shown in table 1.Constitute the monomer component of obtained copolyester Ratio be terephthalic acid units: ethylene glycol unit: bisphenol-A epoxy ethane 2mol addition product unit: diethylene glycol (DEG)=100.0: 92.1:5.0:2.9(molar ratio), the content of the unit from polyester is 0.010 mass %.
Embodiment 10
It has used by 100.0 mass parts of terephthalic acid (TPA), 43.5 mass parts of ethylene glycol and bisphenol-A epoxy ethane 2mol addition In addition to this slurry that 6.85 mass parts of object are formed operates similarly with example 1, manufacture polyester resin particle, use this Grain production cylindrical bottles, and they are evaluated.It the results are shown in table 1.Constitute the monomer component of obtained copolyester Ratio be terephthalic acid units: ethylene glycol unit: bisphenol-A epoxy ethane 2mol addition product unit: diethylene glycol (DEG)=100.0: 94.1:3.0:2.9(molar ratio), the content of the unit from polyester is 0.010 mass %.
Comparative example 1
It operates similarly with example 1, obtains intermediate particle.The glass transition temperature of obtained intermediate particle and The measurement of color of resin.In addition, carrying out extrusion molding using method similarly to Example 1 to aforementioned intermediate particle and being blow molded into Type.These results are shown in table 1.The ratio for constituting the monomer component of aforementioned intermediate particle is terephthalic acid units: ethylene glycol Unit: 1,4-CHDM unit: diethylene glycol (DEG)=100.0:82.9:14.2:2.9(molar ratio), the unit from polyester Content be 0.025 mass %.It should be noted that carrying out extrusion molding blow molding to aforementioned intermediate particle, as a result, parison Drawdown, thus container is not obtained.
Comparative example 2
Additive amount relative to the polyester of 100 mass parts of oligomer is changed to 0.048 mass parts, also, not to low Anti-coloring agent is added in polymers, in addition to this, is operated similarly with example 1, and is manufactured polyester resin particle, is used the particle system Make cylindrical bottles, and they are evaluated.It the results are shown in table 1.Constitute the ratio of the monomer component of obtained copolyester Rate is terephthalic acid units: ethylene glycol unit: 1,4 cyclohexane dimethanol unit: diethylene glycol (DEG)=100.0:82.8:14.2: 3.0(molar ratio), the content of the unit from polyester is 0.050 mass %.
Comparative example 3
Polyester is added not into oligomer and in addition to this anti-coloring agent operates similarly with example 1, and manufacture is poly- Ester resin particle makes cylindrical bottles using the particle, and evaluates them.It the results are shown in table 1.What composition obtained The ratio of the monomer component of copolyester is terephthalic acid units: ethylene glycol unit: 1,4 cyclohexane dimethanol: diethylene glycol (DEG)= 100.0:82.2:15.0:2.8(molar ratio).It should be noted that being squeezed out to polyester resin particle (solid phase particle) Blow molding is formed, as a result parison drawdown, thus does not obtain container.
Comparative example 4
It has used by 92.0 mass parts of terephthalic acid (TPA), 8.0 mass parts of M-phthalic acid (IPA) and 44.4 mass of ethylene glycol The slurry that part is formed, also, the additive amount relative to the polyester of 100 mass parts of oligomer is changed to 0.009 mass parts, it removes Except this, operate similarly with example 1, manufacture polyester resin particle, using the particle make cylindrical bottles, and to they into Row evaluation.It the results are shown in table 1.The ratio for constituting the monomer component of obtained copolyester is terephthalic acid units: Naphthalate units: ethylene glycol unit: diethylene glycol (DEG)=92.0:8.0:96.9:3.1(molar ratio), the unit from polyester contains Amount is 0.010 mass %.
Comparative example 5
It has used by 8.32 matter of 100.0 mass parts of terephthalic acid (TPA), 38.1 mass parts of ethylene glycol and 1,4- butanediol (BD) The slurry that part is formed is measured, also, the additive amount relative to the polyester of 100 mass parts of oligomer is changed to 0.009 mass parts, In addition to this, it operates similarly with example 1, manufactures polyester resin particle, make cylindrical bottles using the particle, and to them It is evaluated.It the results are shown in table 1.The ratio for constituting the monomer component of obtained copolyester is terephthalic acid units: Ethylene glycol unit: 1,4-butanediol:: diethylene glycol (DEG)=100.0:83.0:14.0:3.0(molar ratio), the unit from polyester Content is 0.010 mass %.
Comparative example 6
It is not added with polyester, in addition to this, is operated similarly with example 1, polyester resin particle is manufactured, uses the particle Cylindrical bottles are made, and they are evaluated.It the results are shown in table 1.Constitute the monomer component of obtained copolyester Ratio is terephthalic acid units: ethylene glycol unit: 1,4 cyclohexane dimethanol: diethylene glycol (DEG)=100.0:80.0:17.0:3.0 (molar ratio).It should be noted that carrying out extrusion molding blow molding to polyester resin particle (solid phase particle), as a result, Parison drawdown, thus container is not obtained.
Comparative example 7
The slurry formed by 100.0 mass parts of terephthalic acid (TPA) and 44.8 mass parts of ethylene glycol is made, adds two thereto 0.010 mass parts of 0.010 mass parts of germanium oxide, 0.010 mass parts of phosphorous acid and cobalt acetate.(absolute pressure under elevated pressure 2.5kg/cm2) slurry is heated to 250 DEG C of temperature, esterification is carried out, until esterification yield becomes 95%, is manufactured oligomeric Object.Then, obtained oligomer is moved into 5m3Capacity polycondensation slot in, under the decompression of 0.1Torr, in 270 DEG C of temperature Degree, makes oligomer melt polycondensation above-mentioned, and composite character viscosity is the polyester of 0.70dl/g.Obtained polyester is squeezed out from nozzle It at strands shape and is water-cooled, is then cut into cylindric (diameter is about 2.5mm, and length is about 2.5mm), obtains polyester (A) Particle.
It makes (cis- by 100.0 mass parts of terephthalic acid (TPA), 17.8 mass parts of ethylene glycol and 1,4 cyclohexane dimethanol Body: the mixing ratio 30:70 of trans- body) 62.5 mass parts formed slurry, thereto add 0.015 mass parts of germanium dioxide, Asia 0.010 mass parts of 0.010 mass parts of phosphoric acid and cobalt acetate.(absolute pressure 2.5kg/cm under elevated pressure2) be heated to the slurry 250 DEG C of temperature carries out esterification, until esterification yield becomes 95%, manufactures oligomer.Then, obtained oligomer is moved to 5m3Capacity polycondensation slot in, under the decompression of 0.1Torr, in 270 DEG C of temperature, make oligomer melt polycondensation above-mentioned, it is raw The polyester for being 0.70dl/g at inherent viscosity.Obtained polyester is extruded into strands shape from nozzle and is water-cooled, is then cut It is cut into cylindric (diameter is about 2.5mm, and length is about 2.5mm), obtains the particle of polyester (B).
Cooperate the particle of above-mentioned polyester (A) and polyester (B), in turn, phase in such a way that mass ratio (A/B) becomes 70/30 100 mass parts are added up to for polyester (A) and polyester (B), add [ the tertiary fourth of 3-(3,5- bis- of pentaerythrite four as polyester Base -4- hydroxy phenyl) propionic ester ] 0.024 mass parts and the bis- (2,6- di-t-butyl -4- methylbenzenes of 3,9- as anti-coloring agent Oxygroup) -2,4,8,10- tetra- oxa- -3,9- bis- phospha spiral shell [ 5,5 ] hendecane, 0.048 mass parts are simultaneously pre-mixed, and are then supplied To biaxial extruder (Toshiba Machinery Co., Ltd.'s system " TEM-48SS ").The barrel temperature of extruder is set as 330 DEG C, by mould Head temperature be set as 320 DEG C, purging vacuum pressure be 700mmHg(absolute pressure 60mmHg), the item that extrusion output is 150kg/hr Melting mixing, extrusion line are carried out under part.It is exported in extruder die head, directly measures molten resin with thermometer, as a result, resin Temperature is 332 DEG C.The strands of extrusion are water-cooled immediately, are next cut into that cylindric (diameter is about 2.5mm, and length is about For 2.5mm), the intermediate particle of polyester and resin composition is obtained.
The intermediate particle of polyester and resin composition obtained from operating as described above puts into rotary type vacuum solid phase It is 24 hours dry in 90 DEG C under the decompression of 0.01Torr in polyplant, next carry out crystallizing for 10 hours in 160 DEG C.
After above-mentioned crystallization, under the decompression of 0.01Torr, in 200 DEG C of progress, 38 hours solid phases, gathered The solid phase particle of ester resin composition.Cylindrical bottles are made using obtained particle, and they are evaluated.By its As a result shown in table 1.The ratio for constituting the monomer component of obtained copolyester is terephthalic acid units: ethylene glycol unit: 1, 4- cyclohexanedimethanol unit: diethylene glycol (DEG)=100.0:82.8:14.2:3.0(molar ratio), the content of the unit from polyester For 0.025 mass %.
Comparative example 8
Using by 100.0 mass parts of terephthalic acid (TPA), 37.3 mass parts of ethylene glycol and bisphenol-A epoxy ethane 2mol addition product The slurry that 31.8 mass parts are formed, production polyester (B) are in addition to this operated in the same way with comparative example 7, manufacture polyester resin Grain makes cylindrical bottles using the particle, and evaluates them.It the results are shown in table 1.Constitute obtained copolyester Monomer component ratio be terephthalic acid units: ethylene glycol unit: bisphenol-A epoxy ethane 2mol addition product unit: two is sweet Alcohol=100.0:92.0:5.0:3.0(molar ratio), the content of the unit from polyester is 0.010 mass %.
[table 1]
Polyester resin particle of the invention has the melt viscosity of appropriateness, resin pressure when extrusion and blow molding for 18~ 23MPa, resistance to drawdown are excellent.In addition, the impact resistance and tone of the molded product obtained using these particles are good.Another party Face, when that will carry out intermediate particle obtained from melt polycondensation and carry out extrusion and blow molding (comparative example 1), parison drawdown, not To container.When being not added with polyester (comparative example 3,6), not only parison drawdown, the tone for the resin for not obtaining container, and obtaining It is bad.On the other hand, when the additive amount of polyester is excessive (comparative example 2), the impact resistance of obtained container is insufficient.It is copolymerized into When being divided into M-phthalic acid (comparative example 4), 1,4-butanediol (comparative example 5), the impact resistance of obtained container is insufficient.It will lead to It crosses oligomer melting mixing to make 2 kinds obtained from its polycondensation of particle melting mixing, then progress together with polyester When solid phase (comparative example 7,8), the transparency of obtained molded product is insufficient.
As verified in above-described embodiment, by adding the polyester of specified amount in melt polycondensation, by polyester Resistance to drawdown when resin particle forms improves, and obtains impact resistance and the good molded product of tone, and the polyester is The carboxylate of polyalcohol more than ternary, the carboxylic acid have hindered phenol group.

Claims (3)

1. polyester resin particle is by adding terephthalic acid (TPA), ethylene glycol, cyclohexanedimethanol or bisphenol-A epoxy ethane So that it is carried out polycondensation at object and polyester melting mixing, then carry out polyester resin particle made of solid phase, feature exists In, aforementioned polyester is the carboxylate of the polyalcohol of ternary or more, which has hindered phenol group,
Dicarboxylic acid units in aforementioned polyester are mainly formed by terephthalic acid units,
Diol units in aforementioned polyester mainly by ethylene glycol unit and cyclohexanedimethanol unit or come from bisphenol-A epoxy second The unit of alkane addition product is formed, and relative to the total amount of the diol units, the content of ethylene glycol unit is 75~98 moles of %, hexamethylene The content of alkane dimethanol unit and the unit from bisphenol A epoxy ethane additive product is 2~25 moles of %,
The content of the ingredient from aforementioned polyester in aforementioned polyester resin is 0.005~0.04 mass %, also,
The inherent viscosity of aforementioned polyester is 0.9~1.5dl/g.
2. molded product is carried out made of extrusion and blow molding using particle described in claim 1.
3. the manufacturing method of polyester resin particle according to claim 1, by by terephthalic acid (TPA), ethylene glycol, hexamethylene Alkane dimethanol or bisphenol A epoxy ethane additive product and aforementioned polyester melting mixing make its carry out polycondensation, then cut and Intermediate particle is obtained, the intermediate particle is then made to carry out solid phase.
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