CN1186816A

CN1186816A - Method for preparing polycarbonate

Info

Publication number: CN1186816A
Application number: CN97115352A
Authority: CN
Inventors: 营野龙也; 福田丰
Original assignee: Daicel Chemical Industries Ltd
Current assignee: Daicel Corp
Priority date: 1992-10-14
Filing date: 1997-07-30
Publication date: 1998-07-08

Abstract

A process to produce a high molecular weight polycarbonate with hardly any coloring by subjecting a carbonic acid diester with a low content of impurities to melt polycondensation with a dihydric phenol in the presence of a specific catalyst. In producing a polycarbonate by subjecting a dihydric phenol compound to melt polycondensation with a carbonic acid diester in the presence of a catalyst selected from (a) a basic nitrogen compound or (b) a basic nitrogen compound and an alkali metal compound or an alkaline earth metal compound.

Description

The preparation method of polycarbonate

Present patent application is that Chinese patent application number is 93114847, the applying date is on October 13rd, 1993, invention and created name is divided an application for the Chinese patent application case of " preparation method of polycarbonate ".

The invention relates to the preparation method of non-discoloring high-molecular-weight polycarbonate, this comprises making and contains the carbonic diester and the dihydric phenol that have reduced specific impurities content and carry out melt phase polycondensation by transesterify.The present invention is particularly about preparing the method for non-discoloring high-molecular-weight polycarbonate, and this method is included in (a) basic nitrogen compound and/or (b) alkali metal compound and/or alkaline earth metal compound catalyzer (class) exist to make down and contain the melt phase polycondensation that the carbonic diester that reduced specific impurities content and dihydric phenol are undertaken by transesterify.

The present invention is also about preparing the method for thermally stable polycarbonate.The present invention is particularly about passing through the incompatible method for preparing thermally stable polycarbonate of melt phase polycondensation making dihydric phenol and contain the carbonic diester that has reduced specific impurities content through transesterification in the presence of borate catalyzer and the acidic substance of this catalyzer of neutralizing or in the presence of being selected to the acidic substance of electronics amine and salt catalyst thereof and this catalyzer that can neutralize.

Though non-discoloring high-molecular-weight polycarbonate is the general engineering thermoplast that is applicable to various fields, especially as injection molding material or sheet stock for window glass, then have variety of issue according to the preparation method of prior art.

Normally effective in preparation polycarbonate median surface polycondensation method, but its shortcoming is to use virose phosgene, and formed polycarbonate is polluted by residual chlorion.

In order to overcome these shortcomings, the open No.182336/1988 of Japanese Patent discloses a kind of method for preparing polycarbonate and comprises and use liquid trichloromethyl chloro-formic ester, and it is the dipolymer of phosgene rather than virose phosgene and makes itself and specific dihydric phenol carry out polycondensation by interfacial.

Yet this patent documentation does not provide any specific for removing 9, the data of the specific dihydric phenol outside two (4-hydroxy phenyl) fluorenes of 9-.In addition, be by 2 though Angew.Chem.99992 (1987) introduces a kind of polycarbonate, two (4-hydroxy phenyl) propane of 2-replace the toxicity phosgene to prepare by using triphosgene, have wherein also introduced and have produced phosgene in the reaction mechanism.

In addition, Japanese Patent open-A No.100824/1992 proposes to use xanthone content to be 10ppm or lower diaryl carbonate.Although use this class carbonic ether can produce a kind of polycarbonate of light color relatively, the problem that exists is that resulting polycarbonate is compared a bit jaundice with the polycarbonate that gets with the phosgene legal system.

In addition, the catalyzer that a kind of method for preparing polycarbonate is to use the basic cpd that contains nitrogen to combine with boron compound is also proposed, for example at U.S. Pat 4590257 (date of patent: on May 20th, 1986, transferee: introduce General Elevtric).Catalyzer lacks activity and can provide the polycarbonate of light color relatively polymerization in this method although can ignore, yet the problem of this method is, because catalyzer is low to the polymeric activity, so finish the long commercial productivity that consequently reduced of polymeric time, it is problematic in that, not only in polymerization, be easy to generate and pay reaction formation cladodification structure, and will make the polycarbonate that obtains lack thermostability.

Present inventors have solved above-mentioned problems through extensive studies, concurrent (a) basic nitrogen compound now and/or (b) alkali metal compound and/or alkaline earth metal compound catalyzer exist to make down and contain the carbonic diester and the dihydric phenol that have reduced specific impurities content and can prepare non-discoloring high-molecular-weight polycarbonate by melt phase polycondensation under the condition of not using the toxicity phosgene again through transesterify.

Therefore, first embodiment of the present invention is about prepare the method for polycarbonate by melt phase polycondensation dihydric phenol and carbonic diester, this method comprises that use is substantially free of (A) salol, o-phenoxy acid and o-phenoxy acid phenyl ester, (B) tin ion, be a kind of tin component, (C) methyl benzol carbonate or (D) carbonic diester of salol and o-phenoxy acid.

In the present invention, term " polycarbonate " refers to polycarbonate homopolymer, Copolycarbonate and polyestercarbonate.

The summation that is substantially free of the salol that carbonic diester contained, o-phenoxy acid and the o-phenoxy acid phenyl ester of (A) Whitfield's ointment benzoic acid, o-phenoxy acid and o-phenoxy acid phenyl ester is 50ppm or lower.The tin ion amount that carbonic diester contained that is substantially free of (B) tin ion is 5ppm or lower.The contained methyl benzol carbonate amount of carbonic diester of essentially no (C) methyl benzol carbonate is 50ppm or lower.The Whitfield's ointment phenylester that the carbonic diester of essentially no (D) water field acid phenylester and o-phenoxy acid is contained and the summation of o-phenoxy acid are 50ppm or lower.

In first embodiment of the present invention, more preferably the total water content of carbonic diester is 0.3% (by weight) or lower, hydrolyzable cl content, the cl content that can obtain chlorine by hydrolysis is 3ppm or lower, sodium ions content, be that the sodium components contents is 1ppm or lower, iron ion content, promptly the iron components contents is 1ppm or lower, content of copper ion, be that the copper component concentration is 1ppm or lower and phosphonium ion content, promptly phosphorus component content is 20ppm or lower.

Although for the catalyzer that is used for aforesaid method is hard-core, what recommend to use is that (a) is selected from the catalyzer of basic nitrogen compound and/or (b) is selected from the catalyzer of alkali metal compound and alkaline earth metal compound.

In addition, present inventors through research extensively and profoundly found a kind of under the situation of not using the toxicity phosgene method of the extremely excellent polycarbonate of preparation a kind of essentially no chlorion and thermostability.On going out, the base of this result of study finished the present invention.

Therefore second embodiment of the present invention provides and a kind ofly prepares the method for thermally stable polycarbonate by dissolving polymerization dihydric phenol and carbonic diester, this method comprises using and is selected from boratory compound or is selected from compound to electronics amine and salt thereof as catalyzer, and can use a kind of this catalyzer that neutralizes, the i.e. acidic substance of basic catalyst.

In the method, containing the carbonic diester that has reduced specific impurities content, to be used as monomer be favourable.

In this method, carbonic diester, ester or oxybenzene compound can add in the reaction system as end-capping reagent.This end-capping reagent is 0.05～10 mole of % based on the preferred amounts of dihydric phenol, more preferably 1～5 mole of %.

Other scope of the present invention and suitability will be clear that from detailed description given below.And concerning those skilled in the art, from these describe in detail, can be clear that various changes and modifications in design of the present invention and the scope, therefore describe in detail for these and special case all to be interpreted as only be to have pointed out preferred version of the present invention by way of example.

The representative instance that is used for carbonic diester of the present invention comprises: diphenyl carbonate, carboxylol ester, two (chlorophenyl) carbonic ether ,-cresyl carbonic ether, carbonic acid dinaphthyl ester, two (xenyl) carbonic ether, diethyl carbonate, dibutyl carbonate and carbonic acid two cyclohexyls, wherein diphenyl carbonate is most preferred.

In the present invention, one or more carbonic diesters (class) are used as monomer (class): another kind of scheme is that carbonic diester can be implemented in the present invention with being used in combination of dicarboxylic ester.The example of dicarboxylic ester comprises: terephthaldehyde's diphenyl phthalate and diphenylisophthalate.In the case, be 50 moles of % or lower by the consumption of the summation meter dicarboxylic ester of carbonic diester and dicarboxylester, and obtain polyestercarbonate by melt phase polycondensation.In other words, according to the present invention, term " carbonic diester " also comprises dicarboxylic acids usually.When using two or more carbonic diesters, will obtain multipolymer.

In one embodiment of the invention, carbonic diester essentially no (A) salol, o-phenoxy acid and the o-phenoxy acid phenyl ester that use, (B) tin ion, (C) methyl benzol carbonate, (D) salol and o-phenoxy acid.The form and aspect of these impurity effect resulting polymers and thermotolerance.

In first embodiment of the present invention, the preferred carbonic diester that uses, wherein total water content is 0.3% or lower by weight, cl content (wherein, chlorine can obtain by hydrolysis) be 3ppm or lower, sodium ions content is 1ppm or lower, iron ion content is 1ppm or lower, content of copper ion is that 1ppm or lower and phosphonium ion content are 20ppm or lower, and wherein at least a (A) salol, the total content of o-phenoxy acid and o-phenoxy acid phenyl ester is 50ppm or lower, (B) tin ion content is that 5ppm or content lower and (C) methyl benzol carbonate are 50ppm or lower.Another kind of scheme is that preferably using total water content is 0.3% or lower by weight.Another kind of scheme is, the total water-content of preferred use is 0.3% or lower by weight, cl content (wherein chlorine can produce by hydrolysis) is 3ppm or lower, sodium ions content is 1ppm or lower, iron ion content is 1ppm or lower, content of copper ion is 1ppm or lower, phosphonium ion content is that 20ppm or content lower and (D) salol and o-phenoxy acid are that 50ppm or content lower and (D) salol and o-phenoxy acid are 50ppm or lower carbonic diester, when using the carbonic diester that does not satisfy other requirement except that total water content, the polycarbonate that obtains will change color and its performance significantly, and especially thermostability is very poor.When the water-content of carbonic diester surpasses 0.3% by weight, be hydrolyzed by the diester in the reaction and lost monomeric mol balance, cause to form polymkeric substance with high-polymerization degree.

According to the present invention, provide the chlorine that the chlorine of cl content comprises free chloro ion, exists with the formation of salt, chlorine that exist with the organochlorine compound form and that this organochlorine compound separates out by water decomposition etc.Therefore, with salt for example the chlorine that exists of sodium-chlor or Repone K and owing to organochlorine compound for example the chlorine that obtains of the hydrolysis of phenyl chloroformate also can be to the invention provides cl content.

From carbonic diester, remove the adoptable method of above-mentioned impurity (1) method with hot water or weak base aqueous solution washing carbonic diester is for example arranged, (2) urea is joined in the carbonic diester and the gained mixture is carried out the method for heat fusing, perhaps (3) are with alkaline or alkaline-earth salts Na for example ₂CO ₃, NaHCO ₃, KH ₂PO ₄Or K ₂HPO ₄The method that is added in the carbonic diester and under vacuum, distills the mixture that obtains.

The measuring method of the impurity in the carbonic diester is narrated by following example of the present invention.

In second kind of embodiment of the present invention, although to there is not what restriction as monomeric carbonic diester, the sort of foreign matter content of preferred use reduces those in first kind of embodiment of the present invention.Another kind of scheme is, use cl content (wherein chlorine can be obtained by hydrolysis) to be 3ppm or lower, sodium ions content is 1ppm or lower, iron ion content is 1ppm or lower, salol, the content summation of o-phenoxy acid and o-phenoxy acid phenyl ester is that 50ppm or lower and methyl benzol carbonate are 10ppm or lower carbonic diester, perhaps uses cl content (wherein chlorine can be obtained by hydrolysis) to be 3ppm or lower, sodium ions content is 1ppm or lower, iron ion content is 1ppm or lower and salol, o-phenoxy acid and o-phenoxy acid phenyl ester content sum are that 50ppm or lower carbonic diester are favourable.

The representative instance that is used for dihydric phenol of the present invention comprises those of following general formula (I)～(IV): R in the formula ₁, R ₂, R ₃, R ₄And R ₅Each is hydrogen atom, contain the line style of 1-8 carbon atom or the alkyl or phenyl of side chain; X is a halogen atom; N is that 0 or 1～4 integer and m are 1～4 integers.

The example of bis-phenol is the dihydric phenol of being represented by general formula I, comprise 2, two (4-hydroxyphenyl) propane, 2 of 2-, two (4-hydroxyphenyl) butane, 2 of 2-, two (4-the hydroxyphenyl)-4-methyl of 2--4-pentane, 2, two (4-hydroxyphenyl) octanes, 4 of 2-, 4 '-dihydroxyl-2,2,2-triphenylethane and 2, two (3, the 5-two bromo-4-hydroxyphenyl) propane of 2-.

Example by the bis-phenol of general formula (II) expression comprises 2, two (4-hydroxy-3-methyl-phenyl) propane, 2 of 2-, two (4-hydroxyl-3-the isopropyl phenyl)-propane, 2 of 2-, two (4-hydroxyl-3-secondary butyl phenenyl) propane, 2 of 2-, 2-two (3,5-dimethyl-4-hydroxyphenyl) propane and 2, two (4-hydroxyl-3-tert-butyl phenyl) propane of 2-.

The example of the bis-phenol shown in the general formula (III) comprises 1,1 '-two (4-hydroxyphenyl)-right-diisopropyl benzenes and 1,1 '-two (4-hydroxyphenyl)-m-diisopropyl benzenes.

Bis-phenol shown in the general formula (IV) comprises 1,1 '-two (4-hydroxyphenyl)-hexanaphthenes.

In addition, by using two or more to be selected from the multipolymer that the dihydric phenol shown in the general formula (I)-(IV) can prepare polycarbonate.

The requirement of carbonic diester be with the amount that is present in the dihydric phenol in the reaction system be equimolar.Usually carbonate products must react so that form the high-molecular weight polycarbonate with 1: 1 mol ratio with dihydric phenol.When diphenyl carbonate is used as carbonate products, form two moles phenol by diphenyl carbonate and dihydric phenol reaction.This phenol is distilled away from reaction system.In the present invention, the consumption of carbonic diester is 1.01～1.5 moles with respect to every mole of dihydric phenol, and preferred 1.015～1.20 moles, this is in order to improve the physical properties of polycarbonate, particularly in order to reduce terminal hydroxyl content as much as possible, remove detrimentally affect to form and aspect with this.

Preferred 3～70 moles of % of concentration range of the terminal hydroxy group of the polycarbonate that obtains according to the present invention, also preferred 3～50 moles of %, preferred especially 3～30 moles of %.The terminal hydroxy group concentration that acquisition is lower than 3 moles of % is very difficult.On the contrary, when it surpassed 30 moles of %, the polymkeric substance that obtains was with variable color significantly, and when it surpassed 50 moles of %, the thermostability of polymkeric substance was also destroyed.Terminal hydroxy group concentration is that the polycarbonate of 3～50 moles of % can use separately.The polycarbonate that terminal hydroxy group concentration is approximately 50～70 moles of % can use with the form of other polymeric blends.

In order to reduce the terminal hydroxy group concentration of resulting polymers, can be added to carbonic diester, ester or oxybenzene compound in the reaction system as end-capping reagent.The consumption of end-capping reagent is preferred 0.05 to the 10 mole of % of benchmark by dihydric phenol, is more preferably 1～5 mole of %, and therefore, carbonic diester not only is used as monomer but also be used as end-capping reagent.So the consumption of carbonic diester influences the terminal hydroxy group concentration of resulting polymers.

In first embodiment of the present invention, the melt phase polycondensation of dihydric phenol and carbonic diester is closed preferably at (a) basic nitrogen compound and/or (b) in the presence of alkali metal compound and/or the alkaline earth metal compound, more preferably at basic nitrogen compound, and also can there be alkali metal compound or alkaline earth metal compound catalyzer to have enforcement down.

The exemplary that is used for basic nitrogen compound of the present invention comprise the hydroxide alkyl-, aryl-and alkaryl ammonium, for example tetramethyl ammonium hydroxide (Me ₄NOH), tetraethyl ammonium hydroxide (Et ₄NOH), tetrabutylphosphoniuhydroxide hydroxide (Bu ₄NOH) and benzyltrimethyl ammonium hydroxide (C ₅H ₅-CH ₂(Me ₃) OH); Tertiary amine is methylamine, triethylamine, dimethyl benzyl amine and triphenylamine for example; By general formula: R ₂NH (in the formula R be alkyl for example methyl or ethyl or be aryl such as phenyl or tolyl) the secondary amine class of expression; By general formula: RNH ₂The primary amine class of (R is as defined above in the formula) expression; Ammonia; With subsalt such as hydrogen boronation tetramethyl-ammonium (Me ₄NBH ₄), hydrogen boronation TBuA (BuNBH ₄), tetraphenyl boric acid TBuA (Bu ₄BPh ₄) and tetraphenyl boric acid tetramethyl-ammonium (Bu ₄BPh ₄).

Other example of basic nitrogen compound comprises 4-(4-methyl isophthalic acid-piperidyl) pyridine, N, N-dimethyl-4-aminopyridine, 4-diethyl-aminopyridine, 4-pyrrolidyl pyridine, 4-aminopyridine, the 2-aminopyridine, 2 hydroxy pyrimidine, the 2-methoxypyridine, 4-methoxypyridine, the 4-pyridone, 2-dimethylamino imidazoles, 2-methoxyl group imidazoles, the 2-mercaptoimidazole, quinolylamine, benzoglyoxaline, imidazoles, glyoxal ethyline, 4-methylimidazole, diazabicyclooctane (DABCO), 1,8-diaza one ring [5,4,0]-7-undecylene (DBU) and 4-(4-methylpyrrole alkyl) pyridine.

The exemplary of alkali metal compound comprises sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium bicarbonate, saleratus, lithium bicarbonate, yellow soda ash, salt of wormwood, Quilonum Retard, sodium acetate, potassium acetate, lithium acetate, sodium stearate, potassium stearate, lithium stearate, Sodium Tetraborate, lithium tetraborate, potassium borate, sodium borohydride, lithium borohydride, POTASSIUM BOROHYDRIDE, phenyl-boron dihydroxide sodium, Sodium Benzoate, potassium benzoate, lithium benzoate, Sodium phosphate dibasic, dipotassium hydrogen phosphate, phosphoric acid hydrogen two lithiums, the disodium of dihydroxyphenyl propane, dipotassium and dilithium salt, and the sodium of phenol, potassium and lithium salts, lithium tetraborate wherein, potassium borate and potassium acetate are preferred.

The exemplary of alkaline earth metal compound comprises calcium hydroxide, hydrated barta, magnesium hydroxide, strontium hydroxide, Calcium hydrogen carbonate, barium bicarbonate, Magnesium hydrogen carbonate, strontium bicarbonate, lime carbonate, barium carbonate, magnesiumcarbonate, Strontium carbonate powder, barium acetate, magnesium acetate, strontium acetate, calcium stearate, barium stearate, Magnesium Stearate and strontium stearate.

The consumption that is used as the basic nitrogen compound of catalyzer must be from 10 ^-6～10 ^-1The scope of mole is with respect to every mole of dihydric phenol in the reaction system, preferably from 10 ^-4～10 ^-2Mole.If this consumption is lower than 10 ^-6Mole, its catalytic activity is low, causes polymerization slow, if this consumption surpasses 10 ^-1During mole, the polycarbonate that obtains will seriously be polluted by catalyzer, consequently damage its performance.

Alkali metal compound and the total consumption of alkaline earth metal compound as catalyzer must be 10 with respect to every mole of dihydric phenol in the reaction system ^-7～10 ^-2In the scope of mole, preferred 10 ^-5～10 ^-3Mole.When this consumption is lower than 10 ^-7During mole, the too poor polycarbonate that can not obtain having the satisfied polymerization degree that causes of catalytic activity, and when surpassing 10 ^-2During mole, the polycarbonate that obtains is polluted by co-catalyst significantly, and the result makes performance change.

In second embodiment of the present invention, be selected from boratory compound, or the compound that is selected to electronics amine and salt thereof is used as catalyzer.In second embodiment of the present invention, also use the acidic substance of catalyst neutralisation, be very favourable.

Can be used for that the boratory representative example as transesterification catalyst comprises hypoboric acid sodium, sodium tetraborate, sodium pentaborate, six Sodium Tetraboratees, eight Sodium Tetraboratees, lithium metaborate, lithium tetraborate, five lithium tetraborates, potassium metaborate, potassium tetraborate, potassium pentaborate, six potassium borates, eight potassium borates, ammonium metaborate, tetraboric acid ammonium, ammonium pentaborate, eight ammonium borates, ammonium borate, boric acid four potassium ammoniums, aluminum borate potassium, lime borate, boron ester root, copper borate, lead borate, nickelous borate, magnesium borate and manganese borate among the present invention, an alkali metal salt of its mesoboric acid is can be preferred.

These borates each can use or make in them two or more to be used in combination separately.During in using them two or more, they add or add in reaction process in batches in the time of can be with monomer addition.When using a kind of borate, it joins in the reactor in the time of can be with separate charging or adds in reaction process in batches.

The total amount that is selected from boratory one or more components as catalyzer is with respect to every mole in reaction system dihydric phenol preferred 10 ^-6～10 ^-1Mole, more preferably 10 ^-4～10 ^-2Mole.When this consumption is lower than 10 ^-6During mole, its catalytic activity is low, and the result makes polymerization slow, surpasses 10 but work as this consumption ^-1During mole, resulting polycarbonate is caused its deterioration in physical properties by borate severe contamination result.

Be used for the example of electronics amine of giving of the present invention and comprise 4-(4-methyl isophthalic acid-piperidyl) pyridine, N, N-dimethyl-4-aminopyridine, 4-diethyl amino yl pyridines, 4-pyridine alkyl pyridine, 4-aminopyridine, 2-aminopyridine, 2 hydroxy pyrimidine, 2-methoxypyridine, 4-methoxypyridine, 4-pyridone, 2-dimethylamino imidazoles, 2-methoxyl group imidazoles, 2-mercaptoimidazole, quinolylamine, benzoglyoxaline.Imidazoles, glyoxal ethyline, 4-methylimidazole, diazabicyclooctane (DABCO), 1,8-diazabicylo [5,4,0]-7-undecylene (DBU)-4-(4-methylpyrrole alkyl) pyridine.

The exemplary that works the acid (promptly being to constitute the part of giving the electronics amine salt) of the counter ion effect of giving electronics amine comprises carbonic acid, acetate, formic acid, nitric acid, nitrous acid, oxalic acid, sulfuric acid, phosphoric acid, fluoroboric acid and hydrogen borate.

These can use also for electronics amine and salt thereof separately can two or more to mix and use, during in using them two or more, they be added in the time of can be with monomer feed or in reaction process substep add.When using a kind of compound, it can be with monomer charging or substep charging in reaction process.

Be preferably 10 to total consumption of one or more components of electronics amine and salt thereof with respect to each mole dihydric phenol in the reaction system as being selected from of using of catalyzer ^-6～10 ^-1Mole, more preferably 10 ^-4～10 ^-2Mole.When this consumption is lower than 10 ^-6During mole, its catalytic activity is low, and the result causes polymerization too slow, surpasses 10 and work as this consumption ^-1During mole, the result made its deterioration in physical properties when the polycarbonate that obtains was given electronics amine and/or its salt severe contamination.

In the present invention, the acidic substance that are used to neutralize as the alkaline matter of catalyzer (be borate, give electronics amine or give the salt of electronics amine) comprise boric acid and phosphoric acid hydrogen amine, and they can use or mix use separately.

When borate when the catalyzer, the preferable amount mole number that is used to offer the acidic substance of gained polycarbonate thermostability should be 1～500 times of catalyst system therefor, more preferably the mole number of consumption should be 1～20 times of catalyst system therefor.And when this mole number is lower than the amount of catalyzer, can not reach the effect that gives thermostability, and when its mole number surpassed 500 times of catalyst system therefor, the polycarbonate that obtains had the polymerization degree that can not meet the demands.

When being used as catalyzer for electronics amine and/or its salt, the mole number of preferable amount that can offer the acidic substance of gained polycarbonate thermostability should be 0.01～500 times of catalyst system therefor, and more preferably the consumption mole number should be 1～20 times or 0.01～0.5 times of catalyst system therefor.When this mole number is lower than 0.01 times of catalyst system therefor, do not reach the effect that gives stability, and when this mole number during above 500 times of catalyst system therefor, the polycarbonate that obtains has the low polymerization degree for meeting the demands.

Acidic substance add in the time of can be with starting monomer (being dihydric phenol and carbonic diester) and transesterification catalyst charging simultaneously, or approximately reach 1.1 or add at any time when higher in the relative viscosity of formed polymkeric substance (being to use the dichloromethane solution that contains the 0.5g/dl polymkeric substance to measure down at 20 ℃).Another kind of scheme is, these acidic substance can be added to reaction product after finishing reaction, and promptly in the polycarbonate, these acidic substance can be added to reaction product after reacting finishing, promptly in the polycarbonate, so that a kind of polycarbonate compositions is provided.

In the method according to first and second embodiments of the present invention, melt phase polycondensation is closed and can carry out to about 300 ℃ temperature range 100.Preferred 130～280 ℃ of this temperature of reaction.When temperature of reaction is lower than 100 ℃, reacts too slow, and when this temperature surpasses 300 ℃, reaction takes place easily to pay.

In second embodiment of the present invention, can also use phosphorus compound and/or hindered phenol so that further improve the thermostability of gained polycarbonate.

The representative instance that can be used for phosphorus compound of the present invention comprises triethyl-phosphite, triisopropyl phosphite, triisodecyl phosphite ester, tricresyl phosphite (dodecyl) ester, phenyl diiso decyl phosphorous acid ester, phenylbenzene isodecyl phosphorous acid ester, triphenyl phosphite, tricresyl phosphite, two (the 4-nonyl phenyl) phosphorous acid esters of phenyl, three (4-octyl phenyl) phosphorous acid ester, three (4-(1-phenylethyl) phenyl) phosphorous acid ester, three (2,4-two-tert-butyl-phenyl) phosphorous acid ester, by four-(2 shown in the following general formula, 4-two-tert-butyl-phenyl) 4,4 '-the diphenylene diphosphites;

By formula: Shown tetramethylolmethane two [(2,6-di-t-butyl-4-aminomethyl phenyl] phosphorous acid ester], by general formula:

Tetramethylolmethane two [(2, the 4-di-tert-butyl-phenyl)] phosphorous acid ester, the following formula of expression: Shown four (2,4-two-tert-butyl-phenyl) 4,4 '-(2,2 ,-diphenyl propane) phosphorous acid ester and following formula: The phenyl dialkyl phosphite of expression.

R in the formula ₆And R ₇Expression has the alkyl of the straight or branched of 1～20 carbon atom; Ph represents phenyl.

In addition, above-mentioned phosphorus compound can two kinds can use in multiple mixing.

When this phosphorus compound can be with the starting monomer charging, add together cause or reaction after add at any time.Another kind of scheme is, this phosphorus compound can be added to after reaction is finished among the reaction product so that a kind of polycarbonate compositions to be provided.

The preferable amount of phosphorus compound is that benchmark is counted 10-1000ppm with the dihydric phenol.Can not improve the thermostability of resulting polymers when its add-on is lower than 10ppm effectively, and when this usage quantity surpasses 1000ppm, will impose adverse influence to the physicals of resulting polymers thereby be unfavorable.

The representative instance that is used for the present invention's hindered phenol comprises 3-(3,5-two-tert-butyl-4-hydroxyphenyl) propionic acid octadecyl ester, N, a N ' hexa-methylene two (3,5-two tert-butyl-4-hydroxyl hydrocinnamamide), triethylene glycol two [3-(3-tert-butyl-5-methyl-4-hydroxyphenyl) propionic ester], 1, the 6-hexylene glycol is two, and [3-(3,5-tert-butyl-4-hydroxyphenyl) propionic ester], [3-(3 for tetramethylolmethane four, 5-two-tert-butyl-4-hydroxyphenyl) propionic ester, 3,5-two-tert-butyl-4-acrinyl diethyl phosphoric acid, with by the compound shown in the following general formula (A)～(C):

In addition, above-mentioned hindered phenol can two or more mix use.

Add when hindered phenol can be with the starting monomer charging or cause or reaction after add at any time, another program is that this hindered phenol can be added to after reaction is finished in the reaction product so that a kind of polycarbonate compositions to be provided.In addition, hindered phenol and phosphorus compound can add simultaneously or add at suitable different time.

The preferred add-on of hindered phenol is that benchmark is counted 10～2000ppm with the dihydric phenol.When its add-on is lower than 10ppm, be invalid improving aspect the thermostability of resulting polymers, and this add-on being when surpassing 2000ppm, will imposing adverse influence for the physicals of resulting polymers, is unfavorable.

According to the present invention, by use a kind of contain slightly specific impurities as (a) basic nitrogen compound of catalyst system and/or (b) alkali metal compound and/or alkaline earth metal compound raw material and under the situation of not using poisonous phosgene, can be prepared into a kind of do not have substantially chlorion, the water white polycarbonate of high-molecular weight.

In addition, according to the present invention, then can under the situation of not using poisonous phosgene, make a kind of thermally stabilized polycarbonate or thermally stabilized polycarbonate composition as catalyzer and a kind of acidic substance by using borate or a kind of electronics amine and/or its salt given.

Embodiment

Now illustrating in more detail according to the following examples that but the present invention these embodiment should not be construed as is limitation of the present invention.

Various numerical value among the following embodiment are measured by laxative remedy:

(1), viscosity-average molecular weight (Mv)

The measuring method of viscosity-average molecular weight (Mv) is as follows: interior (intrinsic) viscosity [η] of the dichloromethane solution of the every kind of polycarbonate that determines under 20 ℃ with Ubbelodhe (Ubbellohde) viscometer is as the basis, again according to formula: [η]=1.11 * 10 ^-4(Mv) ^0.82Calculate and record.

(2), terminal hydroxy group concentration

The measuring method of terminal hydroxy group concentration is: use according to gating (gated) uncoupling metering system ¹³The ratio to 129.50ppm place peak area at 114.80ppm is measured and calculated to the C-NMR wave spectrum to every kind of polycarbonate.

(3), foreign matter content

(a) the Determination on content method of salol, o-phenoxy acid, o-phenoxy acid phenyl ester or methyl phenyl carbonate.

Use gas-chromatography (Shimadzu company makes, the GC-14A type) to measure this content.

(b) measuring method of cl content

(contrast) routine I-1 to I-11 and IV-1 are dissolved in sample (5g) in the 10ml toluene to IV-7 in the following order, then add the 10ml elutriant and (contain 2.8 mmole NaHCO ₃With 2.25 mmole Na ₂CO ₃The aqueous solution) and 15ml high purity deionized water.Shaking resulting mixture stops then shaking it is left standstill.Remove formed upper toluene layer.The water layer that obtains is handled so that remove toluene concentration with C-18 SEP-PAK.And made such processing measure this cl content by chromatography of ions (YOKOGAWA SAX-1) with water layer.

(contrast) routine II-1 is to adopt chromatography of ions (YOKOGAWA ELECTRIC WORKS IC 100) to measure to II-16 and III-1 to this cl content of III-28.

(c) method of mensuration sodium ion or iron ion

With Atomic Absorption Spectroscopy AAS (SAS-272 is by Seiko Instruments, and Inc. makes) mensuration content.

(d) cupric ion or phosphonium ion Determination on content method

This content is to measure with bringing out conjugation plasma body (ICP) emission spectrometer (Shimadzu branch department makes, the ICPS-1000III type).

(e) tin ion Determination on content method

(make by Shiamadzu branch department, AA-670G) (make by Shimadzu branch department, GFA-4A) measure this content with Atomic Absorption Spectroscopy AAS with the graphite furnace analyser.

(f) measuring method of water-content

Use spike aquametry instrument (making the CA-05 type by Mitsubishi chemical company) to measure water-content.

(4) package stability

(a) form and aspect

(make with color difference meter by Nippon Denshoku, the 300A type) thin slice of being manufactured by hot pressing quench method [50 * 50 * 2mm (H-W-D)] is measured every kind of polycarbonate, polyestercarbonate or polycarbonate compositions are at 160 ℃ of form and aspect degree (YI) of placing 720 hours front and back down.

(b) cracking number

(50mm * 50mm) its thickness is 0.5mm to manufacture thin slice by the hot pressing quench method with polycarbonate, polyestercarbonate or polycarbonate compositions (example prepares one of in to II-16 and III-1 to III-28 with (contrast) routine II-1).Then the thin slice that obtains is stored down at 160 ℃, so that measure the viscosity-average molecular weight of thin slice placement after 10,20 and 30 days of polycarbonate or polyestercarbonate formation.The method of measuring viscosity-average molecular weight is identical with viscosity-average molecular weight (Mv) measuring method of introduction in (1) item.In addition, calculate the cracking number of polymkeric substance with following formula:

Mvo: initial viscosity-average molecular weight

Viscosity-average molecular weight after Mvt:t days

Example I-1

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.164g (2 * 10 ^-2Mole is with respect to every mole of BPA) glyoxal ethyline, 0.00082g (1 * 10 ^-4Mole is with respect to every mole of BPA) the foreign matter content diphenyl carbonate as shown in table 1 of sodium acetate and 21.96g (0.1025 mole) packs in the reactor, stirred together 1 hour under 180 ℃ of nitrogen atmosphere.The temperature that improves the gained mixture this reaction system of progressively finding time simultaneously.Make this mixture polycondensation 1 hour at 270 ℃ of vacuum 0.1 torrs at last, remove formed phenol by distillation.So make water white polycarbonate.Its viscosity-average molecular weight (Mv) is 27,600, and its vitrifying point is that 150 ℃ and its terminal hydroxyl content 28 are a mole %.In order to represent the variable color degree of its storage, its initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours down in table 2, have been listed.

Example I-2

Except using 0.00122g (1 * 10 ^-4Mole, every mole of BPA) 4-dimethylaminopyridine replaces glyoxal ethyline, uses 0.00098g (1 * 10 ^-4Mole, every mole of BPA) salt of wormwood replaces sodium acetate and uses having outside other diphenyl carbonate of foreign matter content shown in the table 1, and all the other all prepare another kind of water white polycarbonate by the identical method of example I-1 by polycondensation.Its viscosity-average molecular weight (Mv) is 27,000.It is 25 moles of % with terminal hydroxyl content that its vitrifying point is 150 ℃.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 2.

Example I-3

With 11.4g (50 moles of % of used dihydric phenol) 2, two (4-hydroxyphenyl) propane of 2-, 17.0g (50 moles of % of used dihydric phenol) 2, two (4-hydroxyl-3-tert-butyl phenyl) propane of 2-, 0.00122g (1 * 10 ^-4Mole, every mole of bis-phenol, that is, dihydric phenol) 4-dimethylamino pyridine, 0.000066g (1 * 10 ^-5Mole, every mole of bis-phenol, i.e. dihydric phenol) lithium acetate and 21.96g (0.1025 mole) diphenyl carbonate that contains foreign matter content shown in the table 1 packs in the reactor and stirred together under nitrogen atmosphere 2 hours.The mixture that obtains carries out polycondensation by the same procedure of example I-1, makes water white polycarbonate, its viscosity-average molecular weight (Mv) be 24,500 and vitrifying point be 128 ℃.Its terminal hydroxyl content is 23 moles of %.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 2.

Example I-4

Except using 0.00091g (1 * 10 ^-4Mole, every mole BPA) tetramethyl ammonium hydroxide replaces glyoxal ethyline, uses 0.00098g (1 * 10 ^-4Mole, every mole of BPA) potassium acetate replaces sodium acetate and use to have other material carbon diphenyl phthalate of foreign matter content shown in the table 1 and these raw materials is being stirred outside 2 hours under the nitrogen atmosphere in reactor, and all the other prepare another kind of water white polycarbonate by example I-1 same procedure by polycondensation.Its viscosity-average molecular weight (Mv) be 27,800 and vitrifying point be 151 ℃.In addition, terminal hydroxyl content is 21 moles of %.Initial form and aspect and 720 hours form and aspect afterwards of 160 ℃ of following storages are listed in the table 2.

Example I-5

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.0024g (2 * 10 ^-4Mole, every mole of BPA) diphenyl carbonate with foreign matter content shown in the table 1 of 4-dimethylaminopyridine and 21.96g (0.1025 mole) is packed in the reactor, and by the same procedure of example I-1 the gained mixture is carried out polycondensation and obtain water white polycarbonate.Its viscosity-average molecular weight (Mv) be 29,000 and vitrifying point be 150 ℃.In addition, its terminal hydroxyl content is 26 moles of %.Initial form and aspect and list in the table in form and aspect after storing 720 hours down at 160 ℃.

Example I-6

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.00122g (1 * 10 ^-4Mole, every mole of BPA) 4-dimethylaminopyridine, 8.58 * 10 ^-8G (1 * 10 ^-6Mole, every mole of BPA) diphenyl carbonate with foreign matter content shown in the table 1 of lithium tetraborate and 21.96g (0.1025 mole) is packed in the reactor, carries out polycondensation by the same procedure gained mixture of example I-1 then and obtains water white polycarbonate.Its viscosity-average molecular weight (Mv) be 31,000 and vitrifying point be 155 ℃.In addition, its terminal hydroxyl content is 24 moles of %.Its initial form and aspect and the form and aspect after 160 ℃ are stored 729 hours are down listed in the table 2.

Comparative Examples I-7

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.0024g (2 * 10 ^-4Mole, every mole of BPA) N, the diphenyl carbonate that N-dimethyl aminopyridine and 21.96g (0.1025 mole) have a foreign matter content shown in the table 1 is packed in the reactor, and by the same procedure of example I-1 the gained mixture is carried out polycondensation and obtain ruddy polycarbonate.Its viscosity-average molecular weight (Mv) is 26,500 and is glassed to 148 ℃.In addition, its terminal hydroxyl content is 40 moles of %.Its initial form and aspect and under 160 ℃, the form and aspect of storing after 720 hours are all listed in the table 2.

Comparative Examples I-8

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.0024g (2 * 10 ^-4, every mole of BPA) and N, N-dimethyl aminopyridine, 0.00098g (1 * 10 ^-4, every mole of BPA) and diphenyl carbonate with foreign matter content shown in the table 1 of potassium acetate and 21.96g (0.1025 mole) packs in the reactor, and by the same procedure of example I-1 the gained mixture is carried out condensation polymerization and obtain ruddy polycarbonate.Its viscosity-average molecular weight (Mv) be 19,500 and vitrifying point be 130 ℃, its terminal hydroxyl content is 35 moles of %.Its initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours down all are listed in the table 2.

Comparative Examples I-9

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.0024g ((2 * 10 ^-4, every mole of BPA) and N, N-dimethyl aminopyridine, 0.00098g (1 * 10 ^-4, every mole of BPA) and diphenyl carbonate with foreign matter content shown in the table 1 of potassium acetate and 21.96g (0.1025 mole) packs in the reactor, and by the identical method of example I-1 the gained mixture is carried out condensation polymerization and obtain the xanchromatic polycarbonate.Its viscosity-average molecular weight (Mv) be 24,500 and vitrifying point be 145 ℃, its terminal hydroxyl content is 28 moles of %.Its initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours down all are listed in the table 2.

Comparative Examples I-10

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.0024g (2 * 10 ^-4, every mole of BPA) and N, N-dimethyl aminopyridine, 0.00098g (1 * 10 ^-4, every mole of BPA) and diphenyl carbonate with foreign matter content shown in the table 1 of potassium acetate and 21.96g (0.1025 mole) packs in the reactor, and by the same procedure of example I-1 the gained mixture is carried out condensation polymerization and obtain ruddy polycarbonate.Its viscosity-average molecular weight (Mv) be 26,000 and vitrifying point be 145 ℃, its terminal hydroxyl content is 25 moles of %.Its initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours down all are listed in the table 2.

Example I-11

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.0024g (2 * 10 ^-4Every mole of BPA) N, the diphenyl carbonate that N-dimethyl aminopyridine and 21.96g (0.1025 mole) have a foreign matter content shown in the table 1 is packed in the reactor, and by the same procedure of example I-1 the gained mixture is carried out condensation polymerization and obtain water white polycarbonate.Its viscosity-average molecular weight (Mv) be 15,800 and vitrifying point be 130 ℃, its terminal hydroxyl content is 10 moles of %.Its initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours down all are listed in the table 2.

Table 1

Dopant species	Example I-1	Example I-2	Example I-3	Example I-4	Example I-5	Example I-6	Comparative Examples Ex.I-7	Comparative Examples Ex.I-8	Comparative Examples Ex.I-9	Comparative Examples Ex.I-10	Example I-11
Dopant species	Example I-1	Example I-2	Example I-3	Example I-4	Example I-5	Example I-6	Comparative Examples Ex.I-7	Comparative Examples Ex.I-8	Comparative Examples Ex.I-9	Comparative Examples Ex.I-10	Example I-11	The total content tin ion content methyl benzol carbonate chlorinity sodium ions content iron ion content content of copper ion phosphonium ion content of phenyl salicytate, o-phenoxy acid and o-phenoxy acid phenyl ester	????40 ????0.9 ????8 ??＜0.5 ??＜0.5 ??＜0.1 ??＜0.05 ????12	????42 ????0.2 ????7 ??＜0.5 ??＜0.5 ??＜0.1 ??＜0.02 ????10	????38 ????1 ????5 ??＜0.5 ??＜0.5 ??＜0.1 ??＜0.01 ????15	????45 ????0.3 ????9 ??＜0.5 ??＜0.5 ??＜0.1 ??＜0.005 ????1	????35 ????0.8 ????4 ??＜0.5 ??＜0.5 ??＜0.1 ??＜0.01 ????13	????35 ????1 ????7 ??＜0.5 ??＜0.6 ??＜0.1 ??＜0.1 ????12	??????60 ??????1 ??????8 ????＜0.5 ????＜0.5 ????＜0.1 ????＜0.1 ??????10	????40 ????6 ????50 ??＜0.5 ????0.8 ????0.5 ????0.5 ????15	????60 ????10 ????25 ??＜0.5 ????0.8 ????0.7 ????0.6 ????18	????40 ????5 ????100 ??＜0.5 ????0.8 ????0.5 ??＜0.1 ????25	????40 ????1.5 ????5 ????4 ????0.5 ????1.5 ????3 ????15
Water-content (wt%)	????0.25	????0.23	????0.28	????0.25	????0.21	????0.23	??????0.25	????0.40	????0.25	????0.20	????0.45		????40 ????0.9 ????8 ??＜0.5 ??＜0.5 ??＜0.1 ??＜0.05 ????12	????42 ????0.2 ????7 ??＜0.5 ??＜0.5 ??＜0.1 ??＜0.02 ????10	????38 ????1 ????5 ??＜0.5 ??＜0.5 ??＜0.1 ??＜0.01 ????15	????45 ????0.3 ????9 ??＜0.5 ??＜0.5 ??＜0.1 ??＜0.005 ????1	????35 ????0.8 ????4 ??＜0.5 ??＜0.5 ??＜0.1 ??＜0.01 ????13	????35 ????1 ????7 ??＜0.5 ??＜0.6 ??＜0.1 ??＜0.1 ????12		????40 ????6 ????50 ??＜0.5 ????0.8 ????0.5 ????0.5 ????15	????60 ????10 ????25 ??＜0.5 ????0.8 ????0.7 ????0.6 ????18	????40 ????5 ????100 ??＜0.5 ????0.8 ????0.5 ??＜0.1 ????25	????40 ????1.5 ????5 ????4 ????0.5 ????1.5 ????3 ????15

Table 2

		Example I-1	Example I-2	Example I-3	Example I-4	Example I-5	Example I-6	Comparative Examples Ex. I-7	Comparative Examples Ex. I-8	Comparative Examples Ex. I-9	Comparative Examples Ex. I-10	Example I-11
		Example I-1	Example I-2	Example I-3	Example I-4	Example I-5	Example I-6	Comparative Examples Ex. I-7	Comparative Examples Ex. I-8	Comparative Examples Ex. I-9	Comparative Examples Ex. I-10	Example I-11	Thermostability	Initial form and aspect (YI)	??1.5	??1.6	??1.8	??1.8	??1.3	??1.8	????2.5	????2.1	????9.5	????2.6	????2.0
Form and aspect (YI) after storing 720 hours under 160 ℃	??10.8	??l2.5	??16.3	??14.1	??10.2	??17.4	????31.2	????38.3	????45.3	????39.6	????48.4			Initial form and aspect (YI)	??1.5	??1.6	??1.8	??1.8	??1.3	??1.8	????2.5	????2.1	????9.5	????2.6	????2.0

Example II-1

With 4560g (20 moles) 2, two (4-hydroxyphenyl) propane of 2-, 4391.5g (20.5 moles) have diphenyl carbonate, the 38mg (1 * 10 of foreign matter content shown in the table 3 ^-4Mole) sodium tetraborate and 30.9mg (5 * 10 ^-4Mole) boric acid is packed in the bath type reactor that serves as a contrast nickel, content in the reactor was also stirred 1 hour together in 160 ℃ of following fusions of nitrogen atmosphere, this system of little by little finding time again, and improve the gained mixture temperature in case last under the vacuum of 1 torr 270 ℃ carry out condensation polymerization distillation simultaneously in 4 hours and remove formed phenol.Obtaining mixture reacts in automatic cleaning type Vertical Twin reactor and obtained water white polycarbonate in 50 minutes.The viscosity-average molecular weight of this polycarbonate (Mv) is 3,5000.Terminal hydroxyl content is 18 moles of %, stores later cracking number (referring to the thermal degradation of polycarbonate degree) and is shown in Table 3.In order to show the degree of polycarbonate, its initial form and aspect and 720 hours later form and aspect of 160 ℃ of following storages have been shown in table 3 because of the storage variable color.

Example II-2

Except using 30.5mg (1 * 10 ^-4Mole) eight potassium borates replace sodium tetraborate (38mg, 1 * 10 ^-4Mole) and use and to have outside other diphenyl carbonate of foreign matter content shown in the table 3, all the other all pass through polycondensation by the same procedure of example II-1 and prepare another kind of water white polycarbonate.The viscosity-average molecular weight (Mv) that obtains resin is 38,000.Terminal hydroxyl content is 21 moles of %.Storing the cracking number is shown in Table 3.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 3.

Example II-3

Except using 19mg (5 * 10 ^-5Mole) sodium tetraborate and 15.3mg (5 * 10 ^-4Mole) eight potassium borates replace sodium tetraborate (38mg, 1 * 10 ^-4Mole), the boric acid consumption is 40mg (6.5 * 10 ^-4The mole) and the use have outside other diphenyl carbonate of foreign matter content shown in the table 3, all the other all prepare another kind of water white polycarbonate by the same procedure of example II-1 by polycondensation.The viscosity-average molecular weight of the resin that obtains (Mv) is 32,000.Terminal hydroxyl content is 16 moles of %.Cracking number after the storage is shown in Table 3.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 3.

Example II-4

Except using 50mg (5 * 10 ^-5Mole) ammonium hydrogen phosphate replaces boric acid (30.9mg, 5 * 10 ^-4The mole) and the use have outside other diphenyl carbonate of foreign matter content shown in the table 3, all the other all prepare another kind of water white polycarbonate by the same procedure of example II-1 through polycondensation.The viscosity-average molecular weight of gained resin (Mv) is 29,500.Terminal hydroxyl content is 23 moles of %.Cracking number after the storage is shown in Table 3.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 3.

Example II-5

With 3648g (16 moles) 2, two (4-hydroxyphenyl) propane of 2-, 1272g (4 moles) diphenylisophthalate, 4391.5 (20.5 moles) have diphenyl carbonate, the 38mg (1 * 10 of foreign matter content shown in the table 3 ^-4Mole) Sodium Tetraborate and 30.9mg (5 * 10 ^-4Mol) in the identical reactor that boric acid is packed into example II-1 is used.Content in the reactor is melted under 180 ℃ in nitrogen atmosphere and stirred together 1 hour.Handle molten mixture so that carry out polycondensation by example II-1 same procedure then, so make Copolycarbonate.The viscosity-average molecular weight of the resin that obtains (Mv) is 29,200.Terminal hydroxyl content is 18 moles of %.Cracking number after the storage provides in table 3, and initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 3.

Example II-6

Except that use has other diphenyl carbonate of foreign matter content shown in the table 3 and add 100ppm three (2 again the used raw material in example II-1,4-two-tert-butyl phenyl) phosphorous acid ester is as outside the phosphorus compound, and all the other prepare another kind of water white polycarbonate by the identical method of example II-1.When the polycarbonate of gained also is in molten state, in the polycarbonate that obtains, add 200ppm and prepare polycarbonate compositions as 3-(3,5-two-tert-butyl-4-hydroxyphenyl) the propionic acid octadecane ester of hindered phenol.This polycarbonate compositions is squeezed into the twisted wire shape and cuts granulation with toothed gear pump.The viscosity-average molecular weight of this polycarbonate (Mv) is 26,700.Terminal hydroxyl content is 16 moles of %.Cracking ordered series of numbers after the storage is gone in the table 3.Initial form and aspect and 160 ℃ of form and aspect of storing after 720 hours in table 3, provide.

Example II-7

Except using 17.2mg (2 * 10 ^-5Mole) lithium metaborate replaces sodium tetraborate (38mg, 1 * 10 ^-4Mole), the consumption of boric acid is 61.8mg (1 * 10 ^-3The mole) and the use have outside other diphenyl carbonate of foreign matter content shown in the table 3, all the other all prepare another kind of water white polycarbonate by the same procedure of example II-1 by polycondensation.The viscosity-average molecular weight of the resin that obtains (Mv) is 31,000.Terminal hydroxyl content is 17 moles of %.Cracking number after the storage is shown in Table 3.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 3.

Example II-8

Except using 17.2mg (2 * 10 ^-4Mole) lithium metaborate replaces sodium tetraborate (38mg, 1 * 10 ^-4Mole), the boric acid usage quantity is 3.09g (5 * 10 ^-2The mole) and the use have outside other diphenyl carbonate of foreign matter content shown in the table 3, all the other all prepare another kind of water white polycarbonate by the same procedure of example II-1 by polycondensation.The viscosity-average molecular weight of gained resin (Mv) is 28,500.Its terminal hydroxyl content is 15 moles of %.Cracking number after the storage is shown in Table 3.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 3.

Example II-9

The diphenyl carbonate that contains a large amount of specific impurities except use replaces the diphenyl carbonate that uses in the example II-1 and does not use the boric acid, the same steps as that all the other all repeat example II-1, and the polycarbonate that obtains is lurid.The viscosity-average molecular weight of gained resin (Mv) is 29,500, and terminal hydroxyl content is 48 moles of %, and the cracking number after the storage is shown in Table 3.Initial form and aspect and the form and aspect after storing 720 hours under 160 ℃ are shown in Table 3.

Example II-10

The diphenyl carbonate that contains relatively large specific impurities amount except that using replaces the diphenyl carbonate of example II-1, and all the other repeat the same procedure of example II-1.Make lurid polycarbonate.The viscosity-average molecular weight of gained resin (Mv) is 28,600, and terminal hydroxyl content is 38 moles of %, and the cracking ordered series of numbers after the storage is in table 3.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 3.

Comparative Example II-11

Remove and use 0.2mg (5 * 10 ^-6Mole) sodium hydroxide replaces sodium tetraborate and uses having outside other diphenyl carbonates of foreign matter content shown in the table 3, and all the other repeat the same procedure of example II-1.Make a kind of ruddy polycarbonate.The viscosity-average molecular weight of gained resin (Mv) be 30,500 and terminal hydroxyl content be 35 moles of %, the cracking ordered series of numbers after the storage initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours down in table 3 are listed in the table 3.

Table 3

		Example II-1	Example II-2	Example II-3	Example II-4	Example II-5	Example II-6	Example II-7	Example II-8	Example II-9	Example II-10	Comparative Example II-11
		Example II-1	Example II-2	Example II-3	Example II-4	Example II-5	Example II-6	Example II-7	Example II-8	Example II-9	Example II-10	Comparative Example II-11	Impurity in diphenyl carbonate (ppm)	Cl	????2	????2	??＜0.5	????1.5	????2	??＜0.5	????2	????2	????2	????4	????2
Fc	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5			Cl	????2	????2	??＜0.5	????1.5	????2	??＜0.5	????2	????2	????2	????4	????2
Fc	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5	Na		??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5
Cu	??＜0.05	??＜0.03	??＜0.01	????0.01	??＜0.01	??＜0.1	??＜0.1	??＜0.1	??＜0.1	??＜0.5	??＜0.5	Na		??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5
Cu	??＜0.05	??＜0.03	??＜0.01	????0.01	??＜0.01	??＜0.1	??＜0.1	??＜0.1	??＜0.1	??＜0.5	??＜0.5	P		????15	????10	????15	????1	????13	????12	????15	????15	????12	????10	????10
5n	????0.5	????0.2	????1.0	????0.3	????0.8	????1.0	????0.8	????0.8	????10.2	????1.2	????4.0	P		????15	????10	????15	????1	????13	????12	????15	????15	????12	????10	????10
5n	????0.5	????0.2	????1.0	????0.3	????0.8	????1.0	????0.8	????0.8	????10.2	????1.2	????4.0	The summation of salol, neighbour-phenoxy benzoic acid and neighbour-phenoxy benzoic acid phenyl ester		????30	????35	????40	????45	????35	????35	????30	????30	????35	????70	????35
Methyl benzol carbonate	????8	????8	????8	????5	????4	????7	????6	????5	????12	????11	????12			????30	????35	????40	????45	????35	????35	????30	????30	????35	????70	????35
Methyl benzol carbonate	????8	????8	????8	????5	????4	????7	????6	????5	????12	????11	????12	Water-content (weight %)		????0.25	????0.23	????0.28	????0.25	????0.21	????0.23	????0.25	????0.23	????0.25	????0.25	????0.23
Thermal destruction (160 ℃)	Cracking number (t after 10 days ₁₀)	????0.01	????0.02	????0.02	????0.03	????0.01	????0.01	????0.02	????0.01	????0.06	????0.02	Water-content (weight %)		????0.25	????0.23	????0.28	????0.25	????0.21	????0.23	????0.25	????0.23	????0.25	????0.25	????0.23	????0.04
	Cracking number (t after 10 days ₁₀)	????0.01	????0.02	????0.02	????0.03	????0.01	????0.01	????0.02	????0.01	????0.06	????0.02	Cracking number (t after 20 days ₂₀)	????0.05	????0.07	????0.05	????0.08	????0.03	????0.04	????0.05	????0.05	????0.12	????0.10	????0.12		????0.04
	Cracking number (t after 30 days ₃₀)	????0.06	????0.08	????0.07	????0.09	????0.05	????0.05	????0.06	????0.05	????0.10	????0.13	Cracking number (t after 20 days ₂₀)	????0.05	????0.07	????0.05	????0.08	????0.03	????0.04	????0.05	????0.05	????0.12	????0.10	????0.12	????0.15
	Cracking number (t after 30 days ₃₀)	????0.06	????0.08	????0.07	????0.09	????0.05	????0.05	????0.06	????0.05	????0.10	????0.13	Thermal test form and aspect (yellowness index)	Initial (t ₀)	????1.0	????1.2	????1.2	????1.4	????3.0	????1.0	????1.1	????1.2	????1.6	????1.7	????0.15	????1.0
(t after 30 days ₃₀)	????12	????13	????14	????14	????14	????11	????12	????10	????21	????21	????21		Initial (t ₀)	????1.0	????1.2	????1.2	????1.4	????3.0	????1.0	????1.1	????1.2	????1.6	????1.7		????1.0

Example II-12

Same procedure according to example II-1 prepares another kind of water white polycarbonate by polycondensation, only is to use 19mg (5 * 10 ^-5Mole) sodium tetraborate and 15.2mg (5 * 10 ^-5Mole) eight potassium borates replace sodium tetraborate (38mg, 1 * 10 ^-4Mole), use the amount of boric acid to be 40mg (6.5 * 10 ^-4Mole) and use other diphenyl carbonate with foreign matter content shown in the table 4.The viscosity-average molecular weight of the resin that obtains (mv) is 32,000.Cracking ordered series of numbers after the storage is in table 4, and initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 4.

Example II-13

Remove and use 50mg (5 * 10 ^-4Mole) ammonium hydrogen phosphate replaces boric acid (30.9mg, 5 * 10 ^-4The mole) and the use have outside other diphenyl carbonate of foreign matter content shown in the table 4, all the other same procedure by example II-1 prepare another kind of water white polycarbonate by polycondensation.The viscosity-average molecular weight of gained resin (mv) is 29,500.Cracking ordered series of numbers after the storage is in table 4, and in addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 4.

Example II-14

With 3648g (16 moles) 2, two (4-hydroxyphenyl) propane of 2-, 1272g (4 moles) diphenylisophthalate, 4391.5 (20.5 moles) have diphenyl carbonate, 38 mg (1 * 10 of foreign matter content shown in the table 4 ^-4Mole) sodium tetraborate and 30.9mg (5 * 10 ^-4Mole) in the identical reactor that boric acid is packed into example II-1 is used.Content 180 ℃ of following fusions in nitrogen atmosphere in the reactor were also stirred 1 hour together.Handle molten mixture so that carry out polycondensation by the same procedure of example II-1 then.So make Copolycarbonate.The viscosity-average molecular weight of the resin that obtains (Mv) is 29,200.Cracking ordered series of numbers after the storage is in table 4.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 3.

Example II-15

Except use has other diphenyl carbonate of listed foreign matter content in the table 4 and except raw material used in example II-1, add three (2 of 100ppm again, 4-two-tert-butyl phenyl) phosphorous acid ester is as outside the phosphorus compound, all the other prepare another kind of water white polycarbonate by example II-1 same procedure, 3-(3,5-two-tert-butyl-4-hydroxyphenyl) the propionic acid octodecane ester that also is under the state of dissolving 200ppm at the gained polycarbonate joins in the gained polycarbonate and prepares polycarbonate compositions with this.With toothed gear pump this polycarbonate compositions is squeezed into the twisted wire shape and cuts granulation.The viscosity-average molecular weight of this polycarbonate (Mv) is 26,700.Row skill after the storage is listed in the table 4.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 4.

Example II-16

Remove and use 17.2mg (2 * 10 ^-4Mole) lithium metaborate replaces sodium tetraborate (38mg, 1 * 10 ^-4Mole), the boric acid consumption is 61.8mg (1 * 10 ^-3The mole) and the use have outside other diphenyl carbonate of foreign matter content shown in the table 4, all the other prepare another kind of water white polycarbonate by the identical method of example II-1 by polycondensation.The viscosity-average molecular weight of gained resin (Mv) is 31,000.Cracking ordered series of numbers after the storage is in table 4.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 4.

Table 4

		Example II-12	Example II-13	Example II-14	Example II-15	Example II-16
		Example II-12	Example II-13	Example II-14	Example II-15	Example II-16	Impurity in the diphenyl carbonate (ppm)	Cl	????1	????1.5	????2	????2	????2
Fe	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5			Cl	????1	????1.5	????2	????2	????2
Fe	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	Na		??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5
The summation of salol, o-phenoxy acid and o-phenoxy acid phenyl ester	????40	????35	????35	????30	????35	Na		??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5
	????40	????35	????35	????30	????35	Methyl benzol carbonate		????8	????5	????8	????5	????6
Thermal destruction (160 ℃)	Cracking number (t after 10 days ₁₀)	????0.02	????0.03	????0.01	????0.01	Methyl benzol carbonate		????8	????5	????8	????5	????6	????0.02
	Cracking number (t after 10 days ₁₀)	????0.02	????0.03	????0.01	????0.01	Cracking number (t after 20 days ₂₀)	????0.05	????0.08	????0.03	????0.04	????0.05		????0.02
	Cracking number (t after 30 days ₃₀)	????0.07	????0.09	????0.05	????0.05	Cracking number (t after 20 days ₂₀)	????0.05	????0.08	????0.03	????0.04	????0.05	????0.06
	Cracking number (t after 30 days ₃₀)	????0.07	????0.09	????0.05	????0.05	Thermal test form and aspect (yellowness index)	Initial (t ₀)	????1.2	????1.4	????3.0	????1.0	????0.06	????1.1
(t after 30 days ₃₀))	????14	????14	????14	????11	????12		Initial (t ₀)	????1.2	????1.4	????3.0	????1.0		????1.1

EXAMPLE III-1

With 4560g (20 moles) 2, two (4-hydroxyphenyl) propane of 2-, 4391.5g (20.5 moles) contain diphenyl carbonate, the 489mg (1 * 10 of foreign matter content shown in the table 5 ^-3Mole) N, N-dimethyl-4-aminopyridine and 1.2366g (2 * 10 ^-2Mole) boric acid is encased in the bath type reactor of lining nickel.160 ℃ also stirred 1 hour the content fusion in the reactor together under nitrogen atmosphere.Simultaneously system is slowly found time, improve the temperature of gained mixture, so that 270 ℃ are carried out polycondensation 4 hours distillation simultaneously and remove formed phenol under the vacuum of final 1 torr, obtain mixture again in automatic cleaning type Vertical Twin reactor reaction made water white polycarbonate in 50 minutes.The viscosity-average molecular weight of this polycarbonate (Mv) is 29,000.Terminal hydroxyl content is 18 moles of %, and the cracking number after the storage (representing this thermal degradation of polycarbonate degree) is listed in the table 5.In order to represent the degree of this polycarbonate, its initial form and aspect and the form and aspect after storing 720 hours under 160 ℃ in table 5, have been provided because of the storage variable color.

EXAMPLE III-2

Except using 736mg (4 * 10 ^-3Mole) N, the carbonate of N-dimethyl-4-aminopyridine replaces N, N-dimethyl-4-aminopyridine (489mg, 4 * 10 ^-3Mole), the boric acid consumption is 618mg (1 * 10 ^-2The mole) and the use have outside other diphenyl carbonate of the listed foreign matter content of table 5, all the other same procedure by EXAMPLE III-1 prepare another kind of water white polycarbonate by polycondensation.The viscosity-average molecular weight (Mv) that the gained tree refers to is 27,500.Terminal hydroxyl content is 11 moles of %.Cracking numerical table after the storage is in table 5.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 5.

Example II-3

Remove and use 245mg (2 * 10 ^-3Mole) N, N-dimethyl-4-aminopyridine and 368mg (2 * 10 ^-3Mole) N, the carbonate of N-dimethyl-4-aminopyridine replaces N, N-dimethyl-4-aminopyridine (489mg, 4 * 10 ^-3Mole), use the amount of boric acid to be 250mg (4 * 10 ^-3The mole) and the use have outside other diphenyl carbonate of foreign matter content shown in the table 5, all the other same procedure by EXAMPLE III-1 prepare another kind of water white polycarbonate by polycondensation.The viscosity-average molecular weight of gained resin (Mv) is 28,400.Terminal hydroxyl content is 16 moles of %.Cracking ordered series of numbers after the storage is in table 5, and in addition, initial form and aspect and the form and aspect of storing 720 hours under 160 ℃ are also listed in the table 5.

EXAMPLE III-4

Remove and use 1.98g (2 * 10 ^-2Mole) ammonium hydrogen phosphate replaces boric acid (1.2366g, 2 * 10 ^-2Mole) and use and to have outside the diphenyl carbonate of impurity shown in the table 5, all the other same procedure by EXAMPLE III-1 prepare another kind of water white polycarbonate through polycondensations.The viscosity-average molecular weight of gained resin (Mv) is 26,000.Terminal hydroxyl content is 23 moles of %.Cracking ordered series of numbers after the storage is in table 5, and in addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 5.

EXAMPLE III-5

With 2280g (10 moles) 2, the two (4-hydroxyphenyl)propanes of 2-, 3400g (10 moles) 2, two (4-hydroxyl-3-tert-butyl phenyl) propane of 2-, 4349g (20.3 moles) have diphenyl carbonate, the 489mg (4 * 10 of foreign matter content shown in the table 5 ^-3Mole) N, N-dimethyl-4-aminopyridine and 1.2366g (2 * 10 ^-2Mole) boric acid is packed into and the identical reactor that is used for EXAMPLE III-1.In the content in the same procedure treatment reactor of EXAMPLE III-1 with preparation Copolycarbonate (random ratio: about 50%).The viscosity-average molecular weight of gained resin (Mv) is 26,500.Terminal hydroxyl content is 18 moles of %.Cracking ordered series of numbers after the storage is in table 5, and initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 5.

According to the chemical shift principle of the carbon in the carbonic acid ester bond, multipolymer is carried out ¹³The C-NMR wave spectrum is measured, and detects the random ratio of this polyestercarbonate.

EXAMPLE III-6

With 3648g (16 moles) 2, two (4-hydroxyphenyl) propane of 2-, 1272g (4 moles) diphenylisophthalate, 4391.5g (20.5 moles) contain diphenyl carbonate, the 489mg (4 * 10 of foreign matter content shown in the table 5 ^-3Mole) N, the 1.2366g (2 * 10 of N-dimethyl-4-aminopyridine ^-2Mole) boric acid put into EXAMPLE III-1 in the used identical reactor.180 ℃ also stirred 1 hour the content fusion in the reactor together under nitrogen atmosphere.Handle this by the identical method of EXAMPLE III-1 then and dissolve mixture, make a kind of polyester carbonate copolymer thus so that carry out polycondensation.The viscosity-average molecular weight of the resin that makes is 29,200.Terminal hydroxyl content is 16 moles of %, and the cracking ordered series of numbers after the storage is in table 5, and initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 5.

EXAMPLE III-7

Except that using other diphenyl carbonate and the raw material that EXAMPLE III-1 is used, adding 100ppm three (2 again with foreign matter content shown in the table 5,4-two-tert-butyl phenyl) phosphorous acid ester is as outside the phosphorus compound, and all the other same procedure by EXAMPLE III-1 prepare another kind of water white polycarbonate.3-(3,5-two-tert-butyl-4-hydroxyphenyl) propionic acid octadecane ester with 200ppm when the gained polycarbonate still is in molten state adds in the polycarbonate of gained as hindered phenol, prepares another kind of polycarbonate compositions.With toothed gear pump this polycarbonate compositions is squeezed into the twisted wire shape and it is cut granulation.The viscosity-average molecular weight of this polycarbonate (Mv) is 26,700.Terminal hydroxyl content is 17 moles of %.Cracking number after the storage is shown in Table 5.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 5.

EXAMPLE III-8

With 4560g (20 moles) 2, two (4-hydroxyphenyl) propane of 2-, 4391.5g (20.5 moles) have diphenyl carbonate, the 489mg (4 * 10 of foreign matter content shown in the table 5 ^-3Mole) N, N-dimethyl-4-aminopyridine and 24.732g (4 * 10 ^-1Mole) boric acid be added to EXAMPLE III-1 in the used identical reactor.Content fusion in the reactor was also stirred 1 hour together.Simultaneously system slowly vacuumizes, and improves the temperature of gained mixture so that in the end the vacuum of 1 torr is carried out polymerization distillation simultaneously in 4 hours and removed formed phenol for following 270 ℃.The mixture that obtains reacts in the double-screw reactor of automatic cleaning type and made water white polyestercarbonate in 80 minutes.The viscosity-average molecular weight of the resin of gained is (Mv) 23,000.Terminal hydroxyl content is 28 moles of %, and the cracking ordered series of numbers after the storage is in table 5.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 5.

EXAMPLE III-9

The diphenyl carbonate that contains more substantial specific impurities except use replaces the diphenyl carbonate of EXAMPLE III-1 and does not use the boric acid same procedure step of all the other repetition EXAMPLE III-1.Make lurid polycarbonate.The viscosity-average molecular weight of gained resin (Mv) be 29,500 and terminal hydroxyl content be 48 moles of %, the cracking ordered series of numbers after the storage is in table 5.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 5.

EXAMPLE III-10

The diphenyl carbonate that contains more substantial specific impurities except use replaces that all the other all repeat the same procedure step of EXAMPLE III-1 diphenyl carbonate be used for EXAMPLE III-1.Make a kind of lurid polycarbonate.The viscosity-average molecular weight of the resin that makes (mv) be 28,600 and terminal hydroxyl content be 38 moles of %.Cracking ordered series of numbers after the storage is in table 5.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 5.

EXAMPLE III-11

Except the diphenyl carbonate that uses the specific impurities that contains bigger content replaces diphenyl carbonate used in the EXAMPLE III-1 and boric acid consumption as all the other repeat the identical method steps of EXAMPLE III-1 outside the 136g (2,2 moles).Make a kind of lurid polycarbonate, the viscosity-average molecular weight of the resin that makes (Mv) be 14,000 and terminal hydroxyl content be 35 moles of %.Cracking ordered series of numbers after storing is in table 5.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 5.

Comparative Example II I-12

Except using 0.2mg (5 * 10 ^-6Mole) sodium hydroxide replaces N, and N-dimethyl-4-aminopyridine and use have outside the diphenyl carbonate of foreign matter content shown in the table 5, and all the other repeat the same procedure step of EXAMPLE III-1.Make a kind of light red polycarbonate.The viscosity-average molecular weight of the resin that obtains (Mv) be 30,500 and terminal hydroxyl content be 45 moles of %.Cracking ordered series of numbers after the storage is in table 5.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 5.

Table 5

		EXAMPLE III-1	EXAMPLE III-2	EXAMPLE III-3	EXAMPLE III-4	EXAMPLE III-5	EXAMPLE III-6	EXAMPLE III-7	EXAMPLE III-8	EXAMPLE III-9	EXAMPLE III-10	EXAMPLE III-11	Comparative Example II I-12
		EXAMPLE III-1	EXAMPLE III-2	EXAMPLE III-3	EXAMPLE III-4	EXAMPLE III-5	EXAMPLE III-6	EXAMPLE III-7	EXAMPLE III-8	EXAMPLE III-9	EXAMPLE III-10	EXAMPLE III-11	Comparative Example II I-12	Impurity in the diphenyl carbonate (ppm)	Cl	????2	????2	??＜0.5	????1.5	????2	??＜0.5	????2	????2	????2	????4	????1	????2
Fc	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5	??＜0.5			Cl	????2	????2	??＜0.5	????1.5	????2	??＜0.5	????2	????2	????2	????4	????1	????2
Fc	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5	??＜0.5	N0		??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5	??＜0.5
Cu	??＜0.05	??＜0.03	??＜0.01	??＜0.01	??＜0.01	??＜0.1	??＜0.1	??＜0.1	??＜0.1	??＜0.5	????1.5	??＜0.5	N0		??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5	??＜0.5
Cu	??＜0.05	??＜0.03	??＜0.01	??＜0.01	??＜0.01	??＜0.1	??＜0.1	??＜0.1	??＜0.1	??＜0.5	????1.5	??＜0.5	P		????15	????10	????15	????1	????13	????12	????15	????15	????12	????10	????10	????10
50	????0.5	????0.2	????1.0	????0.3	????0.8	????1.0	????0.8	????0.8	????10.2	????1.5	????5.0	????4.0	P		????15	????10	????15	????1	????13	????12	????15	????15	????12	????10	????10	????10
50	????0.5	????0.2	????1.0	????0.3	????0.8	????1.0	????0.8	????0.8	????10.2	????1.5	????5.0	????4.0	The summation of salol, o-phenoxy acid and o-phenoxy acid phenyl ester		????30	????35	????38	????45	????35	????38	????30	????30	????38	????30	????40	????38
Methyl benzol carbonate	????8	????6	????5	????5	????4	????7	????6	????6	????12	????11	????12	????12			????30	????35	????38	????45	????35	????38	????30	????30	????38	????30	????40	????38
Methyl benzol carbonate	????8	????6	????5	????5	????4	????7	????6	????6	????12	????11	????12	????12	Water-content (weight %)		????0.25	????0.23	????0.28	????0.25	????0.21	????0.23	????0.25	????0.23	????0.23	????0.25	????0.20	????0.23
Thermal destruction (160 ℃)	Cracking number (t after 10 days ₁₀)	????0.03	????0.03	????0.04	????0.08	????0.02	????0.01	????0.01	????0.01	????0.06	????0.03	????0.03	Water-content (weight %)		????0.25	????0.23	????0.28	????0.25	????0.21	????0.23	????0.25	????0.23	????0.23	????0.25	????0.20	????0.23	????0.06
	Cracking number (t after 10 days ₁₀)	????0.03	????0.03	????0.04	????0.08	????0.02	????0.01	????0.01	????0.01	????0.06	????0.03	????0.03	Cracking number (t after 20 days ₂₀)	????0.06	????0.07	????0.06	????0.10	????0.04	????0.02	????0.03	????0.05	????0.18	????0.08	????0.10	????0.10		????0.06
	Cracking number (t after 30 days ₃₀)	????0.08	????0.08	????0.09	????0.10	????0.08	????0.04	????0.03	????0.05	????0.28	????0.14	????0.18	Cracking number (t after 20 days ₂₀)	????0.06	????0.07	????0.06	????0.10	????0.04	????0.02	????0.03	????0.05	????0.18	????0.08	????0.10	????0.10	????0.14
	Cracking number (t after 30 days ₃₀)	????0.08	????0.08	????0.09	????0.10	????0.08	????0.04	????0.03	????0.05	????0.28	????0.14	????0.18	Thermal test form and aspect (yellowness index)	Initial (t ₀)	????1.0	????1.2	????1.2	????1.4	????1.8	????3.0	????1.0	????1.5	????1.5	????1.6	????1.0	????0.14	????2.0
(t after 30 days ₃₀)	????12	????13	????14	????14	????14	????14	????11	????10.5	????20	????21	????20	????21		Initial (t ₀)	????1.0	????1.2	????1.2	????1.4	????1.8	????3.0	????1.0	????1.5	????1.5	????1.6	????1.0		????2.0

EXAMPLE III-13

Except using 245mg (2 * 10 ^-3Mole) N, N-dimethyl-4-aminopyridine and 368mg (2 * 10 ^-3Mole) N, the carbonate of N-dimethyl-4-aminopyridine replaces N, N-dimethyl-4-aminopyridine (489mg, 4 * 10 ^-3Mole), use the amount of boric acid to be 250mg (4 * 10 ^-3The mole) and the use have outside other diphenyl carbonate of foreign matter content shown in the table 6, all the other are by preparing another kind of water white polycarbonate with EXAMPLE III-1 same procedure by polycondensation.The viscosity-average molecular weight of gained resin (Mv) is 28,400.Cracking ordered series of numbers after the storage is in table 6.Initial in addition form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 6.

EXAMPLE III-14

Except using 1.98g (2 * 10 ^-2Mole) ammonium hydrogen phosphate replaces boric acid (1.2366g, 2 * 10 ^-2Mole) and use and to have outside other diphenyl carbonate of impurity shown in the table 6, all the other pass through polycondensations by same procedure of EXAMPLE III-1 and prepare another kind of water white polycarbonate.The viscosity-average molecular weight of gained resin is 26,000.Cracking ordered series of numbers after the storage is in table 6.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 6.

EXAMPLE III-15

With 2280g (10 moles) 2, two (4-hydroxyphenyl) propane of 2-, 3400g (10 moles) 2, two (4-hydroxyl-3-tert-butyl phenyl) propane of 2-, 4349g (20.3 moles) have diphenyl carbonate, the 489mg (4 * 10 of foreign matter content shown in the table 6 ^-3Mole) N, N-dimethyl-4-aminopyridine and 1.2366g (2 * 10 ^-2Mole) boric acid be loaded into EXAMPLE III-1 in the used identical reactor.By the content in the identical method treatment reactor of EXAMPLE III-1, preparation polyester carbonate copolymer, (random ratio: about 50%).The viscosity-average molecular weight of gained resin (Mv) is 26,500.Cracking ordered series of numbers after the storage is in table 6.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 6.

The random ratio of polycarbonate is according to the chemical shift of carbon in the carbonic acid ester bond multipolymer to be carried out ¹³The C-NMR wave spectrum detects and measures.

EXAMPLE III-16

With 3648g (16 moles) 2, two (4-hydroxyphenyl) propane of 2-, 1272g (4 moles) diphenylisophthalate, 4391.5g (20.5 moles) have diphenyl carbonate, the 489mg (4 * 10 of foreign matter content shown in the table 6 ^-3Mole) N, N-dimethyl-4-aminopyridine and 1.2366g (2 * 10 ^-2Mole) boric acid pack into EXAMPLE III-1 in the used identical reactor.Content fusion in the reactor was also stirred 1 hour together.Then, handle this molten mixture so that carry out polycondensation, so obtain polyester carbonate copolymer by the same procedure of EXAMPLE III-1.The viscosity-average molecular weight of gained resin (mv) is 29,200.Cracking ordered series of numbers after the storage is in table 6.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 6.

EXAMPLE III-17

Except the boric acid consumption is 12.366g (2 * 10 ^-2Mole) and use and to have outside other diphenyl carbonate of foreign matter content shown in the table 6, same procedure steps of all the other repetition EXAMPLE III-1 obtain a kind of water white polycarbonate.The viscosity-average molecular weight of gained resin (Mv) is 18,500.Cracking ordered series of numbers after the storage is in table 6.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 6.

Table 6

		EXAMPLE III-13	EXAMPLE III-14	EXAMPLE III-15	EXAMPLE III-16	EXAMPLE III-17
		EXAMPLE III-13	EXAMPLE III-14	EXAMPLE III-15	EXAMPLE III-16	EXAMPLE III-17	Impurity in the diphenyl carbonate (ppm)	Cl	????1	????1.5	????2	????2	????1
Fe	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5			Cl	????1	????1.5	????2	????2	????1
Fe	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	Na		??＜0.5	??＜0.5	????0.5	??＜0.5	??＜0.5
The summation of salol, o-phenoxy acid and o-phenoxy acid phenyl ester	????40	????35	????30	????35	????40	Na		??＜0.5	??＜0.5	????0.5	??＜0.5	??＜0.5
	????40	????35	????30	????35	????40	Thermal destruction (160 ℃)		Cracking number (t after 10 days ₁₀)	????0.04	????0.08	????0.02	????0.01	????0.03
Cracking number (t after 20 days ₂₀)	????0.06	????0.10	????0.04	????0.02	????0.10			Cracking number (t after 10 days ₁₀)	????0.04	????0.08	????0.02	????0.01	????0.03
Cracking number (t after 20 days ₂₀)	????0.06	????0.10	????0.04	????0.02	????0.10		Cracking number (t after 30 days ₃₀)	????0.09	????0.10	????0.08	????0.04	????0.18
Thermal test form and aspect (yellowness index)	Initial (t ₀)	????1.2	????1.4	????1.8	????3.0		Cracking number (t after 30 days ₃₀)	????0.09	????0.10	????0.08	????0.04	????0.18	????1.0
	Initial (t ₀)	????1.2	????1.4	????1.8	????3.0	(t after 30 days ₃₀)	????14	????14	????14	????14	????20		????1.0

EXAMPLE III-18

With 4560g (20 moles) 2,2-) two (4-hydroxyphenyl) propane, 4391.5g (20.5 moles) have diphenyl carbonate, the 489mg (4 * 10 of foreign matter content shown in the table 7 ^-3Mole) N, N-dimethyl-4-aminopyridine and 70mg (1.13 mmole) boric acid is packed in the bath type reactor that serves as a contrast nickel.Content fusion in the reactor was also stirred 1 hour together.System is slowly vacuumized, and the temperature that improves the gained mixture is so that carried out polycondensation 4 hours at last under 1 torr vacuum and 270 ℃, distillation simultaneously removes formed phenol.With the mixture that obtains again in the Vertical Twin reactor of an automatic cleaning type reaction provided a kind of colorless transparent polycarbonate in 50 minutes.The viscosity-average molecular weight of this polycarbonate (Mv) is 29,000.Store back cracking ordered series of numbers in table 7, this cracking number refers to the thermal degradation of polycarbonate degree.In addition, in order to represent polycarbonate, its prima facies and the form and aspect after storing 720 hours under 160 ℃ in table 7, have been listed because of the variable color degree that storage produces.

EXAMPLE III-19

Except using 736mg (4 * 10 ^-3Mole) N, the carbonate of N-dimethyl-4-aminopyridine replaces N, N-dimethyl-4-aminopyridine (489mg, 4 * 10 ^-3The mole), the boric acid consumption be 30mg (0.49 mmole) and the use have outside other diphenyl carbonate of foreign matter content shown in the table 7, all the other same procedure by EXAMPLE III-18 prepare another kind of water white polycarbonate through polycondensation.The viscosity-average molecular weight of gained resin (Mv) is 27,500.Cracking ordered series of numbers after the storage is in 7.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 7.

EXAMPLE III-20

Remove and use 245mg (2 * 10 ^-3Mole) N, N-. dimethyl-4-aminopyridine and 368mg (2 * 10 ^-3Mole) N, the carbonate of N-dimethyl-4-aminopyridine replaces N, N-dimethyl-4-aminopyridine (489mg, 4 * 10 ^-3The mole), uses the boric acid amount as 50mg (0.81 mmole) and the use have outside other diphenyl carbonate of impurity shown in the table 7, all the other same procedure by EXAMPLE III-18 prepare another kind of water white polycarbonate by polycondensation.The viscosity-average molecular weight of gained resin (Mv) is 28,400.Cracking ordered series of numbers after the storage is in 7.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down also listed in the table 7.

EXAMPLE III-21

Remove and use 112mg (1.13 mmole) ammonium hydrogen phosphate to replace boric acid (70mg, 1.13 mmole) and use and to have outside other diphenyl carbonate of foreign matter content shown in the table 7, all the other same procedure by EXAMPLE III-18 prepare another kind of water white polycarbonate through polycondensation.The viscosity-average molecular weight of gained resin (mv) is 26,000.Cracking ordered series of numbers after the storage is in table 7.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 7.

EXAMPLE III-22

With 2280g (10 moles) 2, two (4-hydroxyphenyl) propane of 2-, 3400g (10 moles) 2, two (4-hydroxyl-3-tert-butyl phenyl) propane of 2-, 4349g (20.3 moles) have diphenyl carbonate, the 489mg (4 * 10 of foreign matter content shown in the table 7 ^-3Mole) N, N-dimethyl-4-aminopyridine and 70mg (113 mmole) boric acid pack into the used identical reactor of EXAMPLE III-18 in.Handle content in this reactor with preparation Copolycarbonate (random ratio: about 50%) in EXAMPLE III-18 same procedure.The viscosity-average molecular weight of gained resin (Mv) is 26,500.Skill after the storage is listed in the table 7.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 7.

The random ratio of polyester carbonate copolymer is to use according to the chemical shift of carbon in the carbonic acid ester bond ¹³The C-NMR wave spectrum detects multipolymer and measures.

EXAMPLE III-23

With 3648g (16 moles) 2, two (4-hydroxyphenyl) propane of 2-, 1272g (4 moles) diphenylisophthalate, 4391.5g (20.5 moles) have diphenyl carbonate, the 489mg (4 * 10 of foreign matter content shown in the table 7 ^-3Mole) N, N-dimethyl-4-aminopyridine and 70mg (1.13 mmole) boric acid pack into the used identical reactor of EXAMPLE III-18 in, the content fusion in the reactor was also stirred 1 hour together.Then, handle this molten mixture and carry out polycondensation, so make polyester carbonate copolymer by EXAMPLE III-18 same procedure.The viscosity-average molecular weight of gained resin (Mv) is 29,200.Cracking ordered series of numbers after the storage is in table 7.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 7.

EXAMPLE III-24

Phosphorous acid ester is as outside the phosphorus compound to add three (2,4-two-tert-butyl phenyl) of 100ppm except that the raw material that uses in EXAMPLE III-18 again, and all the other prepare another kind of water white polycarbonate by EXAMPLE III-18 same procedure.When the gained polycarbonate also is in molten state, 200ppm 3-(3,5-two-tert-butyl-4-hydroxyphenyl) propionic acid octodecane ester is joined in the gained polycarbonate with the preparation polycarbonate compositions as hindered phenol.With toothed gear pump this polycarbonate compositions is squeezed into the twisted wire shape and cuts granulation again.The viscosity-average molecular weight of this polycarbonate (Mv) is 26,700.Cracking ordered series of numbers after the storage is in table 7.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 7.

EXAMPLE III-25

Have other diphenyl carbonate of foreign matter content shown in the table 7 and do not use the boric acid same procedure step of all the other repetition EXAMPLE III-18 except that using.Make a kind of water white polycarbonate.The viscosity-average molecular weight of gained resin (Mv) is 29,500.Cracking ordered series of numbers after the storage is in table 7.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 7.

EXAMPLE III-26

The diphenyl carbonate that contains a large amount of specific impurities except that use replaces the diphenyl carbonate used in the EXAMPLE III-18, and all the other repeat the same procedure step of EXAMPLE III-18.Make a kind of lurid polycarbonate.The viscosity-average molecular weight of gained resin is 28,600.Cracking ordered series of numbers after the storage is in table 7.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 7.

EXAMPLE III-27

Except that using other diphenyl carbonate with foreign matter content shown in the table 7 and boric acid consumption as the 70mg (1.12 mmole), all the other repeat the same procedure step of EXAMPLE III-18.Make a kind of water white polycarbonate.The viscosity-average molecular weight of gained resin (Mv) is 18,500.Cracking ordered series of numbers after the storage is in table 7.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 7.

EXAMPLE III-28

Remove and use 0.2mg (5 * 10 ^-6Mole) sodium hydroxide replaces N, and N-dimethyl-4-aminopyridine and use have outside other diphenyl carbonate of impurity shown in the table 7, and all the other repeat the identical method steps of EXAMPLE III-18.Make a kind of polycarbonate.In the viscosity-average molecular weight that gets resin is 30,500.Cracking ordered series of numbers after the storage is in table 7.In addition, initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 7.

Table 7

		EXAMPLE III-18	EXAMPLE III-19	EXAMPLE III-20	EXAMPLE III-21	EXAMPLE III-22	EXAMPLE III-23	EXAMPLE III-24	EXAMPLE III-25	EXAMPLE III-26	EXAMPLE III-27	Comparative Example II I-28
		EXAMPLE III-18	EXAMPLE III-19	EXAMPLE III-20	EXAMPLE III-21	EXAMPLE III-22	EXAMPLE III-23	EXAMPLE III-24	EXAMPLE III-25	EXAMPLE III-26	EXAMPLE III-27	Comparative Example II I-28	Impurity in the diphenyl carbonate (ppm)	Cl	????2	????2	????1	????1.5	????2	????2	????2	????2	????4	????1	????2
Fc	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5	??＜0.5			Cl	????2	????2	????1	????1.5	????2	????2	????2	????2	????4	????1	????2
Fc	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5	??＜0.5	Na		??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5	??＜0.5
The summation of salol, o-phenoxy acid and o-phenoxy acid phenyl ester	????30	????35	????40	????35	????30	????35	????30	????35	????70	????40	????35	Na		??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	??＜0.5	????1.5	??＜0.5	??＜0.5
	????30	????35	????40	????35	????30	????35	????30	????35	????70	????40	????35	Thermal destruction (160 ℃)		Cracking number (t after 10 days ₁₀)	????0.03	????0.03	????0.04	????0.08	????0.02	????0.01	????0.01	????0.06	????0.03	????0.03	????0.06
Cracking number (t after 20 days ₂₀)	????0.06	????0.07	????0.06	????0.10	????0.04	????0.02	????0.03	????0.08	????0.08	????0.10	????0.10			Cracking number (t after 10 days ₁₀)	????0.03	????0.03	????0.04	????0.08	????0.02	????0.01	????0.01	????0.06	????0.03	????0.03	????0.06
Cracking number (t after 20 days ₂₀)	????0.06	????0.07	????0.06	????0.10	????0.04	????0.02	????0.03	????0.08	????0.08	????0.10	????0.10		Cracking number (t after 30 days ₃₀)	????0.08	????0.08	????0.09	????0.10	????0.08	????0.04	????0.03	????0.18	????0.14	????0.18	????0.14
Thermal test form and aspect (yellowness index)	Initial (t ₀)	????1.0	????1.2	????1.2	????1.4	????1.6	????3.0	????1.0	????1.5	????1.8	????1.0		Cracking number (t after 30 days ₃₀)	????0.08	????0.08	????0.09	????0.10	????0.08	????0.04	????0.03	????0.18	????0.14	????0.18	????0.14	????2.0
	Initial (t ₀)	????1.0	????1.2	????1.2	????1.4	????1.6	????3.0	????1.0	????1.5	????1.8	????1.0	(t after 30 days ₃₀)	????12	????13	????14	????14	????14	????14	????11	????20	????21	????20	????21		????2.0

EXAMPLE IV-1

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.164g (2 * 10 ^-2Mole, every mole of BPA) glyoxal ethyline, 0.00082g (1 * 10 ^-4Mole, every mole of BPA) diphenyl carbonate with foreign matter content shown in the table 8 of sodium acetate and 21.96g (0.1025 mole) joins in the reactor and under 180 ℃ of nitrogen atmosphere and stirred together 1 hour.The temperature that improves the gained mixture also vacuumizes reaction system gradually.This mixture is 270 ℃ at last, carries out polycondensation 1 hour under the 1 torr vacuum, and formed phenol is removed in distillation simultaneously.Obtain water white polycarbonate thus.Its viscosity-average molecular weight (Mv) is 27,600.It is 28 moles of % with terminal hydroxyl content that its vitrifying point is 150 ℃, in order to represent it because of the variable color degree that storage produces, has provided initial form and aspect and the form and aspect after storing 720 hours under 160 ℃ in table 9.

EXAMPLE IV-2

Remove and use 0.00122g (1 * 10 ^-4Mole, every mole of BPA) 4-dimethylaminopyridine replaces glyoxal ethyline, 0.00098g (1 * 10 ^-4Mole, every mole of BPA) salt of wormwood and use has outside the diphenyl carbonate of the listed foreign matter content of table 8, and all the other prepare another kind of water white polycarbonate by EXAMPLE IV-1 same procedure through polycondensation.Its viscosity-average molecular weight (Mv) is 27,000.It is 25 moles of % with its terminal hydroxyl content that vitrifying point is 150 ℃.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 9.

EXAMPLE IV-30

With 11.4g (50 moles of % of used dihydric phenol) 2, two (4-hydroxyphenyl) propane, 17.0 (50 moles of % of used dihydric phenol) 2 of 2-, two (4-hydroxyl-3-tert-butyl phenyl) propane of 2-, 0.00122g (1 * 10 ^-4Mole, every mole of bis-phenol promptly, dihydric phenol) 4-dimethylaminopyridine, 0.000066g (1 * 10 ^-5Every mole of bis-phenol of mole, that is, dihydric phenol) pack into reactor and under nitrogen atmosphere, stirring together 2 hours of diphenyl carbonate with the listed foreign matter content of table 8 of lithium acetate and 21.96g (0.1025 mole).The mixture that obtains makes the mixture polycondensation that obtains prepare a kind of water white polycarbonate by the same procedure of EXAMPLE IV-1.Its viscosity-average molecular weight (Mv) is that its vitrifying point of 24,500 is 128 ℃.Its terminal hydroxyl content is 23 moles of %, and initial form and aspect and the form and aspect after storing 720 hours under 160 ℃ are shown in Table 9.

EXAMPLE IV-4

Remove and use 0.00091g (1 * 10 ^-4Mole, every mole of BPA) tetramethyl ammonium hydroxide replaces glyoxal ethyline, uses 0.00098g (1 * 10 ^-4Every mole of BPA of mole) potassium acetate and use have other material carbon diphenyl phthalate of foreign matter content shown in the table 8, and the content in the reactor, be that raw material is stirred under nitrogen atmosphere outside 2 hours together, all the other same procedure by EXAMPLE IV-1 prepare another kind of water white polycarbonate through polycondensation.Its viscosity-average molecular weight (Mv) be 27,800 and its vitrifying point be 151 ℃.In addition, its terminal hydroxyl content is 21 moles of %.Initial form and aspect and the form and aspect after storing 720 hours under 160 ℃ are shown in Table 9.

EXAMPLE IV-5

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.0024g (2 * 10 ^-4Mole, every mole of BPA) diphenyl carbonate with foreign matter content shown in the table 8 of 4-dimethylaminopyridine and 21.96g (0.1025 mole) installs in the reactor, and the mixture that obtains is made a kind of water white polycarbonate by the same procedure polycondensation of EXAMPLE IV-1.Its viscosity-average molecular weight (Mv) be 29,000 and vitrifying point be 150 ℃.In addition, its terminal hydroxyl content is 26 moles of %, and initial form and aspect and the form and aspect after storing 720 hours under 160 ℃ are shown in Table 9.

Comparative Examples I V-6

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.0024g (2 * 10 ^-4Mole, every mole of BPA) N, N-dimethyl aminopyridine, 0.00098g (1 * 10 ^-4Mole, every mole of BPA) pack into reactor and make the mixture that obtains carry out polycondensation by EXAMPLE IV-1 same procedure to make polycarbonate of diphenyl carbonate with foreign matter content shown in the table 8 of potassium acetate and 21.96g (0.1025 mole).Its viscosity-average molecular weight (Mv) be 19,500 and vitrifying point be 130 ℃.Terminal hydroxyl content is 35 moles of %.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down listed in the table 9.

Comparative Examples I V-7

With 22.8g (0.1 mole) 2, two (4-hydroxyphenyl) propane (BPA) of 2-, 0.0024g (2 * 10 ^-4Mole, every mole of BPA) N, N-dimethyl aminopyridine, 0.00098g (1 * 10 ^-4Mole, every mole of BPA) diphenyl carbonate with foreign matter content shown in the table 8 of potassium acetate and 21.96g (0.1025 mole) installs in the reactor and by the same procedure of EXAMPLE IV-1 the gained mixture is carried out polycondensation and gets polycarbonate.Its viscosity-average molecular weight (Mv) be 24,500 and its vitrifying point be 145 ℃.In addition, terminal hydroxyl content is 28 moles of %.Initial form and aspect and the form and aspect after 160 ℃ are stored 720 hours are down shown also and are listed in the table 9.

The following embodiment of reference illustrates in greater detail the present invention but constant being interpreted as is the restriction of the scope of the invention.

Table 8

Dopant species	EXAMPLE IV-1	EXAMPLE IV-2	EXAMPLE IV-3	EXAMPLE IV-4	EXAMPLE IV-5	Comparative Examples I V-6	Comparative Examples I V-7
Dopant species	EXAMPLE IV-1	EXAMPLE IV-2	EXAMPLE IV-3	EXAMPLE IV-4	EXAMPLE IV-5	Comparative Examples I V-6	Comparative Examples I V-7	Salol and o-phenoxy acid chlorine sodium ion iron ion cupric ion phosphorus	??40ppm ＜0.5ppm ＜0.5ppm ＜0.1ppm ＜0.05ppm ??12ppm	??42ppm ＜0.5ppm ＜0.5ppm ＜0.1ppm ＜0.02ppm ??10ppm	??38ppm ＜0.5ppm ＜0.5ppm ＜0.1ppm ＜0.01ppm ??15ppm	??45ppm ＜0.5ppm ＜0.5ppm ＜0.1ppm ＜0.005ppm ??1ppm	??35ppm ＜0.5ppm ＜0.5ppm ＜0.1ppm ＜0.01ppm ??13ppm	????58ppm ??＜0.5ppm ????0.8ppm ????0.5ppm ????0.5ppm ????15ppm	????70ppm ??＜0.5ppm ????0.8ppm ????0.7ppm ????0.6ppm ????18ppm
Water	??0.25wt％	??0.23wt％	??0.28wt％	??0.25wt％	??0.21wt％	????0.40wt％	????0.25wt％		??40ppm ＜0.5ppm ＜0.5ppm ＜0.1ppm ＜0.05ppm ??12ppm	??42ppm ＜0.5ppm ＜0.5ppm ＜0.1ppm ＜0.02ppm ??10ppm	??38ppm ＜0.5ppm ＜0.5ppm ＜0.1ppm ＜0.01ppm ??15ppm	??45ppm ＜0.5ppm ＜0.5ppm ＜0.1ppm ＜0.005ppm ??1ppm	??35ppm ＜0.5ppm ＜0.5ppm ＜0.1ppm ＜0.01ppm ??13ppm

Table 9

		EXAMPLE IV-1	EXAMPLE IV-2	EXAMPLE IV-3	EXAMPLE IV-4	EXAMPLE IV-5	Comparative Examples Ex.IV-6	Comparative Examples Ex.IV-7
		EXAMPLE IV-1	EXAMPLE IV-2	EXAMPLE IV-3	EXAMPLE IV-4	EXAMPLE IV-5	Comparative Examples Ex.IV-6	Comparative Examples Ex.IV-7	Thermostability	Initial form and aspect (YI)	????1.5	????1.6	????1.8	????1.8	????1.3	????2.1	????1.9
Form and aspect after storing 720 hours under 160 ℃	????10.8	????12.5	????16.3	????14.1	????10.2	????38.3	????45.3			Initial form and aspect (YI)	????1.5	????1.6	????1.8	????1.8	????1.3	????2.1	????1.9

Claims

1. one kind prepares the method for polycarbonate by melt phase polycondensation dihydric phenol and carbonic diester, and this method comprises the carbonic diester that uses essentially no tin ion.

2. according to the preparation method of the polycarbonate of claim 1, wherein the total water content of carbonic diester is 0.3% or lower by weight; Cl content, wherein chlorine can obtain by hydrolysis, is 3ppm or lower; Sodium ions content is 1ppm or lower; Iron ion content is 1ppm or lower; Content of copper ion is 1ppm or lower; Phosphonium ion content is that 20ppm or lower and tin ion content are 5ppm or lower.

3. according to the preparation method of the polycarbonate of claim 1, wherein the melt phase polycondensation of dihydric phenol and carbonic diester closes that alkali metal compound and/or alkaline earth metal compound are done to carry out in the presence of the catalyzer (class) at (a) basic nitrogen compound and/or (b).

4. according to the preparation method of the polycarbonate of claim 3, the amount of use therein basic nitrogen compound is that every mole of dihydric phenol is 10 ^-6～10 ^-1Mole, total consumption of alkali metal compound and alkaline earth metal compound is that every mole of dihydric phenol is 10 ^-7～10 ^-2Mole.

5. according to the preparation method of the polycarbonate of claim 1, the consumption of use therein carbonic diester is that every mole of dihydric phenol is 1.01 to 1.5 moles.

6. according to the preparation method of the polycarbonate of claim 1, the poly-carbon ester that is wherein generated has the terminal hydroxy group concentration of 3～30 moles of %.

7. according to the preparation method of the polycarbonate of claim 1, wherein dihydric phenol is to be selected from the represented compound of following general formula (I)～(IV):

R in the formula ₁, R ₂, R ₃, R ₄And R ₅Respectively do for oneself hydrogen atom, contain the straight or branched alkyl or phenyl of 1～8 atom; X is a halogen atom; N be 0 or the integer of 1-4 and m be 1～4 integer.

8. according to the preparation method of the polycarbonate of claim 1, wherein use two or more dihydric phenols and/or two kinds of multiple carbonic diesters to prepare multipolymer.

9. one kind prepares the method for polycarbonate by melt phase polycondensation dihydric phenol and carbonic diester, and this method comprises uses the carbonic diester that is substantially free of methyl benzol carbonate.

10. according to the preparation method of the polycarbonate of claim 9, wherein the total water content that has of carbonic diester is 0.3% or lower by weight; Cl content, wherein chlorine can be produced by hydrolysis, is 3ppm or lower; Sodium ions content is 1ppm or lower; Iron ion content is 1ppm or lower; Content of copper ion is 1ppm or lower; Phosphonium ion content is that 20ppm or lower and methyl benzol carbonate content are 50ppm or lower.

11. according to the preparation method of the polycarbonate of claim 9, wherein alkali metal compound and/or alkaline earth metal compound are to carry out in the presence of the catalyzer (class) at (a) basic nitrogen compound and/or (b) for melt phase polycondensation dihydric phenol and carbonic diester.

12. according to the preparation method of the polycarbonate of claim 11, wherein the consumption of basic nitrogen compound is that every mole of dihydric phenol is 10 ^-6To 10 ^-1Mole; The use total amount of basic metal and alkaline earth metal compound is that every mole of dihydric phenol is 10 ^-7-10 ^-2Mole.

13. according to the preparation method of the polycarbonate of claim 9, wherein the consumption of carbonic diester is that every mole of dihydric phenol is 1.01～1.5 moles.

14. according to the preparation method of the polycarbonate of claim 9, wherein the polycarbonate of Xing Chenging has the terminal hydroxy group concentration of 3～30 moles of %.

15. according to the preparation method of the polycarbonate of claim 9, wherein dihydric phenol is the compound that is selected from following general formula (I)-(IV) expression:

R in the formula ₁, R ₂, R ₃, R ₄And R ₅Each naturally hydrogen atom, contain the alkyl or phenyl that carbon atom is 1～8 straight or branched; X is a halogen atom; N is that 0 or 1～4 integer and m are 1～4 integer.

16. the preparation method according to the polycarbonate of claim 9 wherein uses two or more dihydric phenols and/or two or more carbonic diesters to prepare multipolymer.