WO2016137065A1 - Polyester carbonate resin, preparation method therefor, and molded product comprising same - Google Patents

Abstract

A polyester carbonate resin according to the present invention comprises: a repeating unit represented by chemical formula 1; a repeating unit represented by chemical formula 2; a repeating unit represented by chemical formula 3; and a repeating unit represented by chemical formula 4. The polyester carbonate resin has excellent weather resistance and the like.

Description

Polyester carbonate resin, its manufacturing method and molded article comprising the same

The present invention relates to a polyester carbonate resin, a manufacturing method thereof and a molded article comprising the same. More specifically, the present invention relates to a polyester carbonate resin having excellent weather resistance and the like, a method for preparing the same, and a molded article including the same.

Polycarbonate resins are used in a wide range of applications because of their excellent mechanical properties, thermal properties, and transparency. Polycarbonate resin is also used as an outdoor material, in which case the color change of the product due to ultraviolet (UV) should be small. Thus, in order to improve the weather resistance (reduction of color change by ultraviolet rays, etc.) of polycarbonate resin, the method of adding an additive, such as an ultraviolet stabilizer, to a resin or blending with another resin is mainly used.

However, the conventional UV stabilizer is a low molecular weight, may cause gas generation during resin processing, and may reduce chemical resistance and the like. Moreover, when mixing 2 or more types of resin, there exists a possibility that the permeability, impact resistance, etc. of a resin composition may fall with the compatibility fall between resins.

Accordingly, there is a demand for development of a thermoplastic copolymer resin that is excellent in weather resistance, chemical resistance, permeability, impact resistance, and the like, and is suitable as an outdoor material.

Background art of the present invention is disclosed in Republic of Korea Patent No. 10-0836363.

An object of the present invention is to provide a polyester carbonate resin having excellent weather resistance, chemical resistance, permeability, (low temperature) impact resistance and the like, a method for producing the same, and a molded article including the same.

The above and other objects of the present invention can be achieved by the present invention described below.

One aspect of the present invention relates to a polyester carbonate resin. The polyester carbonate resin is a repeating unit represented by the following formula (1); A repeating unit represented by Formula 2 below; A repeating unit represented by Formula 3 below; And a repeating unit represented by Formula 4 below:

[Formula 1]

[Formula 2]

[Formula 3]

[Formula 4]

In Formulas 1, 2, 3, and 4, R ₁ is an alkylene group having 1 to 10 carbon atoms, an alkylidene group having 2 to 10 carbon atoms, a cycloalkylene group having 5 to 12 carbon atoms, or a cycloalkylidene group, and R ₂ and R ₃ is each independently an alkyl group or halogen atom having 1 to 10 carbon atoms, A is a single bond, an oxygen atom or a sulfur atom, and Ar is an arylene group or an oxygen atom or sulfur atom including 6 to 12 carbon atoms Is an arylene group, and a and b each independently represent an integer of 0 to 4.

In embodiments, the polyester carbonate resin is a first diol compound represented by the formula (5); A second diol compound represented by Formula 6; Aromatic dicarboxylic acid compounds represented by the following general formula (7); And a monomer mixture comprising an aromatic carbonate compound:

[Formula 5]

In Formula 5, R ₁ is an alkylene group having 1 to 10 carbon atoms, an alkylidene group having 2 to 10 carbon atoms, a cycloalkylene group having 5 to 12 carbon atoms or a cycloalkylidene group, and R ₂ and R ₃ are each independently carbon atoms An alkyl group or halogen atom of 1 to 10, a and b are each independently an integer of 0 to 4;

[Formula 6]

In Formula 6, A is a single bond, an oxygen atom or a sulfur atom;

[Formula 7]

In Formula 7, Ar is an arylene group having 6 to 12 carbon atoms or an arylene group having 6 to 12 carbon atoms including an oxygen atom or a sulfur atom, and R ₄ and R ₅ are each independently a hydrogen atom or an alkyl group having 1 to 5 carbon atoms to be.

In embodiments, the first diol compound comprises about 35 to about 49 mol% in about 100 mol% of the total monomer mixture, and the second diol compound is about 1 to about 15 mol% in about 100 mol% of the total monomer mixture Wherein the aromatic dicarboxylic acid compound is included in about 1 to about 15 mol% of about 100 mol% of the total monomer mixture, and the aromatic carbonate compound is about 35 to about 49 in about 100 mol% of the total monomer mixture. It may be included as mole%.

In embodiments, the polyester carbonate resin may include a unit represented by the following formula (8) in the main chain:

[Formula 8]

In Formula 8, A is a single bond, an oxygen atom or a sulfur atom, Ar is an arylene group having 6 to 12 carbon atoms or an arylene group having 6 to 12 carbon atoms including an oxygen atom or a sulfur atom, and * represents a bonding site .

In an embodiment, the unit represented by Formula 8 may be formed by ultraviolet irradiation.

In embodiments, the weight average molecular weight of the polyester carbonate resin may be about 10,000 to about 200,000 g / mol.

In embodiments, the polyester carbonate resin may have a yellow index difference (ΔYI) of about 0 to about 15 measured according to Equation 1 below:

[Equation 1]

Yellow Index Difference (ΔYI) = YI ₁ -YI ₀

In Equation 1, YI ₀ is a yellow index of about 2.5 mm thick specimen measured according to ASTM D1925, YI ₁ is about 313 nm, about 0.63 W / m ² UV (UV) at about 60 ℃ Yellow index measured according to ASTM D1925 after irradiation for about 48 hours at.

In embodiments, the polyester carbonate resin has a transmittance (light transmittance) of about 2.5 mm thick specimen measured according to ASTM D1003 of about 80 to about 99%, and about 1 / of measured at about 25 ° C. according to ASTM D256. Izod impact strength of 8 "thick specimens is about 65 to about 90 kgfcm / cm, and low temperature Izod impact strength of about 1/8" thick specimen measured at about -20 ° C according to ASTM D256 kgf cm / cm.

Another aspect of the present invention relates to a method for producing the polyester carbonate resin. The preparation method is a first diol compound represented by Formula 5; A second diol compound represented by Chemical Formula 6; Aromatic dicarboxylic acid compounds represented by Formula 7; And reacting the monomer mixture comprising the aromatic carbonate ester compound.

In an embodiment, the reaction can be carried out at about 150 to about 330 ° C.

Another aspect of the present invention relates to a molded article formed from the resin composition containing the polyester carbonate resin.

The present invention has the effect of the invention to provide a polyester carbonate resin having excellent weather resistance, chemical resistance, permeability, (low temperature) impact resistance, and the like, and a method for producing the same.

Hereinafter, the present invention will be described in detail.

Polyester carbonate resin according to the present invention is a repeating unit represented by the formula (1); A repeating unit represented by Formula 2 below; A repeating unit represented by Formula 3 below; And it is characterized in that it comprises a repeating unit represented by the formula (4).

[Formula 1]

[Formula 2]

[Formula 3]

[Formula 4]

In Formulas 1, 2, 3, and 4, R ₁ is an alkylene group having 1 to 10 carbon atoms, an alkylidene group having 2 to 10 carbon atoms, a cycloalkylene group having 5 to 12 carbon atoms, or a cycloalkylidene group, and R ₂ and R ₃ is each independently an alkyl group having 1 to 10 carbon atoms or a halogen atom such as a chlorine atom (Cl) or a fluorine atom (F), A is a single bond, an oxygen atom or a sulfur atom, and Ar is an arylene group having 6 to 12 carbon atoms Or an arylene group having 6 to 12 carbon atoms containing an oxygen atom or a sulfur atom, and a and b each independently represent an integer of 0 to 4;

Polyester carbonate resin according to an embodiment of the present invention is a first diol compound represented by the formula (5); A second diol compound represented by Formula 6; Aromatic dicarboxylic acid compounds represented by the following general formula (7); And it may be a polymer of a monomer mixture comprising an aromatic carbonate ester compound.

[Formula 5]

In Formula 5, R ₁ is an alkylene group having 1 to 10 carbon atoms, an alkylidene group having 2 to 10 carbon atoms, a cycloalkylene group having 5 to 12 carbon atoms or a cycloalkylidene group, and R ₂ and R ₃ are each independently carbon atoms An alkyl group of 1 to 10 or a halogen atom such as a chlorine atom (Cl) or a fluorine atom (F), and a and b each independently represent an integer of 0 to 4;

[Formula 6]

In Formula 6, A is a single bond, an oxygen atom or a sulfur atom;

[Formula 7]

In Formula 7, Ar is an arylene group having 6 to 12 carbon atoms or an arylene group having 6 to 12 carbon atoms including an oxygen atom or a sulfur atom, and R ₄ and R ₅ are each independently a hydrogen atom or an alkyl group having 1 to 5 carbon atoms to be.

In embodiments, the first diol compound is 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (3-methyl-4-hydroxyphenyl) propane, 2,2-bis (3 , 5-dimethyl-4-hydroxyphenyl) propane, 2,2-bis (3,5-diethyl-4-hydroxyphenyl) propane, 2,2-bis (3,5-diisopropyl-4- Hydroxyphenyl) propane, 2,2-bis (3,5-dibutyl-4-hydroxyphenyl) propane, 2,2-bis (3,5-dichloro-4-hydroxyphenyl) propane, bis (4 -Hydroxyphenyl) methane, bis (3-methyl-4-hydroxyphenyl) methane, bis (3,5-dimethyl-4-hydroxyphenyl) methane, bis (3,5-diethyl-4-hydroxy Phenyl) methane, bis (3,5-diisopropyl-4-hydroxyphenyl) methane, bis (3,5-dibutyl-4-hydroxyphenyl) methane, combinations thereof, and the like, It is not limited. For example, 2, 2-bis (4-hydroxyphenyl) propane (BPA, bisphenol A), 2, 2-bis (3-methyl-4- hydroxyphenyl) propane, bis (4-hydroxyphenyl) Methane (BPF, bisphenol F), bis (3,5-dimethyl-4-hydroxyphenyl) methane (TMBPF, tetramethyl bisphenol F) and the like can be used.

In embodiments, the first diol compound is about 35 to about 49 mol%, for example about 37 to about 47 mol%, specifically about 35, about 36, about 37, about 38 of about 100 mol% of the total monomer mixture , About 39, about 40, about 41, about 42, about 43, about 44, about 45, about 46, about 47, about 48, or about 49 mole%. The weather resistance, permeability, (low temperature) impact resistance, chemical resistance and the like of the polyester carbonate resin in the above range may be excellent.

In an embodiment, the second diol compound may be exemplified by 4,4'-biphenol, 4,4'-dihydroxydiphenyl ether and / or 4,4'-dihydroxydiphenylthioether. .

In embodiments, the second diol compound is about 1 to about 15 mol%, for example about 3 to about 13 mol%, specifically about 1, about 2, about 3, about 4, in about 100 mol% of the total monomer mixture , About 5, about 6, about 7, about 8, about 9, about 10, about 11, about 12, about 13, about 14, or about 15 mole%. The weather resistance, permeability, (low temperature) impact resistance, chemical resistance and the like of the polyester carbonate resin in the above range may be excellent.

In embodiments, the aromatic dicarboxylic acid compound is terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 1,4-naphthalenedicarboxylic acid, 1, 4-phenylenedioxydiacetic acid, 1,3-phenylenedioxydiacetic acid, diphenic acid, 4,4'-oxydibenzoic acid, diphenylmethane-4,4'-dicarboxylic acid, diphenylsulfone-4, 4'-dicarboxylic acid, 4,4'-biphenyldicarboxylic acid, alkyl esters thereof (dimethyl terephthalate, etc.) and the like can be exemplified, but is not limited thereto.

In embodiments, the aromatic dicarboxylic acid compound is about 1 to about 15 mol%, for example about 3 to about 13 mol%, specifically about 1, about 2, about 3, of about 100 mol% of the total monomer mixture About 4, about 5, about 6, about 7, about 8, about 9, about 10, about 11, about 12, about 13, about 14, or about 15 mole percent. The weather resistance, permeability, (low temperature) impact resistance, chemical resistance and the like of the polyester carbonate resin in the above range may be excellent.

In an embodiment, examples of the aromatic carbonate ester compound include diaryl carbonates such as diphenyl carbonate, ditoryl carbonate, bis (chlorophenyl) carbonate, m-cresyl carbonate, and dinaphthyl carbonate, but are not limited thereto. Do not. For example diphenyl carbonate can be used.

In an embodiment, the aromatic carbonate compound is from about 35 to about 49 mole percent, such as from about 37 to about 47 mole percent, specifically about 35, about 36, about 37, about 38 of about 100 mole percent of the total monomer mixture. , About 39, about 40, about 41, about 42, about 43, about 44, about 45, about 46, about 47, about 48, or about 49 mole%. The weather resistance, permeability, (low temperature) impact resistance, chemical resistance and the like of the polyester carbonate resin in the above range may be excellent.

Polyester carbonate resin of the present invention, for example, the first diol compound; The second diol compound; The aromatic dicarboxylic acid compound; And a monomer mixture containing an aromatic carbonate ester compound.

In embodiments, the reaction (ester exchange reaction) may be by melt polymerization method. The reaction may proceed at a temperature of about 150 to about 330 ° C., for example about 160 to about 310 ° C., specifically about 190 to about 300 ° C. In this range, the reaction rate is high and side reactions can be reduced. In addition, the reaction may be carried out under atmospheric pressure or reduced pressure. For example, about 100 torr or less, specifically about 30 torr or less, more specifically about 1 torr or less may be carried out under reduced pressure conditions, it can be carried out step by step by varying the temperature and pressure. Preferably, the reaction proceeds for at least about 10 minutes, for example from about 15 minutes to about 24 hours, specifically from about 15 minutes to about 12 hours, in terms of reaction rate and side reaction reduction.

In an embodiment, the reaction can be carried out in the presence of a catalyst. As the catalyst, a catalyst used in a transesterification reaction may be used. For example, an alkali metal catalyst, an alkaline earth metal catalyst, or the like may be used. Examples of the alkali metal catalyst may include LiOH, NaOH, KOH, but are not limited thereto. These can be used individually or in mixture of 2 or more types. The amount of the catalyst used may be about 40 to about 600 ppb (by weight), for example, about 60 to about 400 ppb, based on the monomer mixture. It is possible to obtain sufficient reactivity in the above range, it is possible to minimize the generation of by-products by side reactions.

In embodiments, the polyester carbonate resin of the present invention may include a unit represented by the following formula (8) in the main chain, the unit may be formed by ultraviolet irradiation.

[Formula 8]

In Formula 8, A and Ar are as defined in Formulas 2 and 3, and * represents a binding site.

The unit represented by Formula 8 (2-hydroxybenzophenone form) is an ester linkage moiety (

It is formed by photo-fries rearrangement, and can absorb ultraviolet rays as in the following mechanism (Scheme 1). As described above, the polyester carbonate resin of the present invention can absorb the ultraviolet rays of the polymer chain without the ultraviolet absorbent through the unit of the formula (8), weather resistance (reduction of color change due to ultraviolet rays, etc.) without deterioration of other physical properties such as impact resistance Can improve.

Scheme 1

In Scheme 1, A and Ar are as defined in Formulas 2 and 3, and * represents a binding site.

In embodiments, the polyester carbonate resin may have a weight average molecular weight of about 10,000 to about 200,000 g / mol, for example, about 15,000 to about 80,000 g / mol, as measured by gel permeation chromatography (GPC), but is not limited thereto. Do not.

In embodiments, the polyester carbonate resin may have a yellow index difference (ΔYI) measured according to Equation 1 below about 0 to about 15, for example about 1 to about 10.

[Equation 1]

Yellow Index Difference (ΔYI) = YI ₁ -YI ₀

In Equation 1, YI ₀ is a yellow index of about 2.5 mm thick specimen measured according to ASTM D1925, YI ₁ is about 313 nm, about 0.63 W / m ² UV (UV) at about 60 ℃ Yellow index measured according to ASTM D1925 after irradiation for about 48 hours at.

In an embodiment, the polyester carbonate resin may have a transmittance (light transmittance) of about 80 to about 99%, for example about 85 to about 95%, of a 2.5 mm thick specimen measured according to ASTM D1003.

In an embodiment, the polyester carbonate resin has an Izod impact strength of about 1/8 "thick specimen measured at about 25 ° C. according to ASTM D256 of about 65 to about 90 kgf · cm / cm, for example about 70 to about Low temperature Izod impact strength of about 1/8 "thick specimen measured at about -20 ° C according to ASTM D256, for example about 65 to about 85 kgfcm / cm, for example about 65 kgfcm / cm. To about 80 kgf · cm / cm.

The molded article according to the present invention is formed from a resin composition comprising the polyester carbonate resin. For example, using the said resin composition, a molded article can be manufactured by shaping | molding methods, such as injection molding, double injection molding, blow molding, extrusion molding, and thermoforming. The molded article can be easily formed by those skilled in the art to which the present invention pertains.

In embodiments, the resin composition is a filler, flame retardant, impact modifier, anti-dripping agent, antibacterial agent, heat stabilizer, antioxidant, mold release agent, light stabilizer, surfactant, plasticizer, lubricant, antistatic agent, dye, pigment in addition to the polyester carbonate resin And additives such as a combination thereof. As the filler, any filler used in conventional thermoplastic resin compositions can be used without limitation. For example, talc, wollastonite, glass fibers, whiskers, silica, mica, basalt fibers, mixtures thereof, and the like can be used, but are not limited thereto. The content of the additive may be about 100 parts by weight or less, for example, about 0.1 to about 40 parts by weight based on about 100 parts by weight of the polyester carbonate resin, but is not limited thereto.

The molded article of the present invention can be applied to various fields to which the polycarbonate resin composition is applied. In addition, since the polyester carbonate resin having excellent weather resistance, permeability, (low temperature) impact resistance, chemical resistance and the like is included, it is particularly useful as an outdoor material for which such physical properties are required.

Hereinafter, the configuration and operation of the present invention through the preferred embodiment of the present invention will be described in more detail. However, this is presented as a preferred example of the present invention and in no sense can be construed as limiting the present invention.

Details that are not described herein will be omitted since those skilled in the art can sufficiently infer technically.

Example

Example  1-5 and Comparative example  1 ~ 2: Polyester carbonate  Preparation of Resin

According to the composition and content of Table 1 below, (A) 2,2-bis (4-hydroxyphenyl) propane (BPA), (B1) 4,4'-biphenol (BP), (B2) 4,4 '-Dihydroxydiphenylether, (C) diphenyl carbonate (DPC) and (D) dimethylterephthalate (DMT) and KOH 160 ppb (based on the weight of the reaction mixture) as catalyst were added sequentially to the reactor, followed by nitrogen To remove oxygen in the reactor. After raising the temperature of the reactor to 200 ° C and reacted for 6 hours, the temperature of the reactor was again raised to 230 ° C and maintained at a pressure of 100 torr for 1 hour. Next, the temperature of the reactor was increased to 290 ° C. and maintained at a pressure of 20 torr for 1 hour, and then the pressure was lowered to 0.5 torr and maintained for 1 hour to prepare a polyester carbonate resin in a molten state.

Experimental Example

The resins prepared in Examples and Comparative Examples were extruded at a temperature of 270 ° C. in a twin screw extruder having L / D = 36 and Φ = 32, and were prepared in pellet form using a pelletizer. After drying the pellet-shaped polyester carbonate resin in an oven at 120 ° C. for 4 hours, a specimen was prepared by injection molding at an injection machine (manufacturer: Dongshin Hydraulic, DHC 120WD) at a molding temperature of 310 ° C. and a mold temperature of 65 ° C. It was. For the prepared specimens, physical properties were measured by the following method, and the results are shown in Table 1 below.

Property evaluation method

(1) Weight average molecular weight (unit: g / mol): It measured using gel permeation chromatography (GPC).

(2) Weather resistance: The yellow index difference (ΔYI) was calculated according to the following Equation 1. The smaller the yellow index difference, the better the weatherability.

[Equation 1]

Yellow Index Difference (ΔYI) = YI ₁ -YI ₀

In Equation 1, YI ₀ is the yellow index of the 2.5 mm thick specimen measured according to ASTM D1925, YI ₁ is UV light at 313 nm, 0.63 W / m ² condition at 60 ℃ for 48 hours Yellow index measured according to ASTM D1925 after irradiation.

(3) Permeability (Unit:%): According to ASTM D1003, the transmittance (light transmittance) of the 2.5 mm thick specimen was measured using a Haze meter NDH 2000 device manufactured by Nippon Denshoku.

(4) Impact resistance (unit: kgf · cm / cm): According to the evaluation method specified in ASTM D256, a notch is applied to a specimen for measuring Izod impact strength of 1/8 "thickness at 25 ° C. Izod impact strength was measured.

(5) Low temperature impact resistance (unit: kgf · cm / cm): Notch in the specimen for measuring the Izod impact strength of 1/8 "thickness at -20 ℃ according to the evaluation method specified in ASTM D256. ) To measure Izod impact strength.

(6) Chemical resistance: Methanol and iso-isolated with 2.1% strain in accordance with ASTM D543 by injection molding specimens for tensile strength measurement according to ASTM D638. After dropping the propyl alcohol, the crack state of the specimen appearing on the curved surface was observed after 10 minutes (◎: no crack, ○: fine crack occurred, △: large crack occurred, ×: haze due to crack ) Observed).

	Example					Comparative example
	One	2	3	4	5	One	2
(A) (mol%)	45	45	40	40	45	50	50
(B1) (mol%)	5	5	10	10	-	-	-
(B2) (mol%)	-	-	-	-	5	-	-
(C) (mol%)	45	40	45	40	45	50	45
(D) (mol%)	5	10	5	10	-	-	5
Weight average molecular weight (g / mol)	25,600	26,200	24,800	25,300	25,100	26,000	24,700
Weather Resistance (ΔYI)	9	6	10	7	9	24	12
Permeability (%)	89	89	89	89	89	89	89
Impact resistance (kgfcm / cm)	73	72	70	73	72	72	71
Low temperature impact resistance (kgfcm / cm)	69	70	69	70	68	8	6
Chemical resistance	◎	◎	◎	◎	◎	×	○

From the results of Table 1 above, the polyester carbonate resins (Examples 1 to 5) of the present invention are weather resistance, permeability, (low temperature) impact resistance, It can be seen that transparency, chemical resistance and the like are all excellent.

Simple modifications or changes of the present invention can be easily carried out by those skilled in the art, and all such modifications or changes can be seen to be included in the scope of the present invention.

Claims (11)

1. A repeating unit represented by Formula 1 below;

   A repeating unit represented by Formula 2 below;

   A repeating unit represented by Formula 3 below; And

   Polyester carbonate resin comprising a repeating unit represented by the following formula (4):

   [Formula 1]

   

   [Formula 2]

   

   [Formula 3]

   

   [Formula 4]

   

   In Formulas 1, 2, 3, and 4, R ₁ is an alkylene group having 1 to 10 carbon atoms, an alkylidene group having 2 to 10 carbon atoms, a cycloalkylene group having 5 to 12 carbon atoms, or a cycloalkylidene group, and R ₂ and R ₃ is each independently an alkyl group or halogen atom having 1 to 10 carbon atoms, A is a single bond, an oxygen atom or a sulfur atom, and Ar is an arylene group or an oxygen atom or sulfur atom including 6 to 12 carbon atoms Is an arylene group, and a and b each independently represent an integer of 0 to 4.
2. The method of claim 1, wherein the polyester carbonate resin is a first diol compound represented by the formula (5); A second diol compound represented by Formula 6; Aromatic dicarboxylic acid compounds represented by the following general formula (7); And a polymer of a monomer mixture comprising an aromatic carbonate ester compound:

   [Formula 5]

   

   In Formula 5, R ₁ is an alkylene group having 1 to 10 carbon atoms, an alkylidene group having 2 to 10 carbon atoms, a cycloalkylene group having 5 to 12 carbon atoms or a cycloalkylidene group, and R ₂ and R ₃ are each independently carbon atoms An alkyl group or halogen atom of 1 to 10, a and b are each independently an integer of 0 to 4;

   [Formula 6]

   

   In Formula 6, A is a single bond, an oxygen atom or a sulfur atom;

   [Formula 7]

   

   In Formula 7, Ar is an arylene group having 6 to 12 carbon atoms or an arylene group having 6 to 12 carbon atoms including an oxygen atom or a sulfur atom, and R ₄ and R ₅ are each independently a hydrogen atom or an alkyl group having 1 to 5 carbon atoms to be.
3. The compound of claim 2, wherein the first diol compound comprises about 35 to about 49 mol% in about 100 mol% of the total monomer mixture, and the second diol compound comprises about 1 to about 15 in about 100 mol% of the total monomer mixture. Molar%, wherein the aromatic dicarboxylic acid compound is included in about 1 to about 15 mole% of about 100 mole% of the total monomer mixture, and the aromatic carbonate compound is about 35 to about 100 mole% of the total monomer mixture Polyester carbonate resin, characterized in that it comprises about 49 mol%.
4. The method of claim 1, wherein the polyester carbonate resin is a polyester carbonate resin, characterized in that it comprises a unit represented by the formula (8) in the main chain:

   [Formula 8]

   

   In Formula 8, A is a single bond, an oxygen atom or a sulfur atom, Ar is an arylene group having 6 to 12 carbon atoms or an arylene group having 6 to 12 carbon atoms including an oxygen atom or a sulfur atom, and * represents a bonding site .
5. The polyester carbonate resin according to claim 4, wherein the unit represented by Chemical Formula 8 is formed by ultraviolet irradiation.
6. The polyester carbonate resin of claim 1, wherein the weight average molecular weight of the polyester carbonate resin is about 10,000 to about 200,000 g / mol.
7. The polyester carbonate resin of claim 1, wherein the polyester carbonate resin has a yellow index difference (ΔYI) of about 0 to about 15 measured according to Equation 1 below:

   [Equation 1]

   Yellow Index Difference (ΔYI) = YI ₁ -YI ₀

   In Equation 1, YI ₀ is a yellow index of about 2.5 mm thick specimen measured according to ASTM D1925, YI ₁ is about 313 nm, about 0.63 W / m ² UV (UV) at about 60 Yellow index measured according to ASTM D1925 after irradiation for about 48 hours.
8. The method according to claim 1, wherein the polyester carbonate resin has a transmittance (light transmittance) of about 80 mm to about 99% of a specimen of about 2.5 mm thickness measured according to ASTM D1003, and about 250 ° C. measured according to ASTM D256. Izod impact strength of 1/8 "thick specimens is about 65 to about 90 kgfcm / cm, and low temperature Izod impact strength of about 1/8" thick specimens measured at about -20 ° C according to ASTM D256 Polyester carbonate resin, characterized in that about 85 kgfcm / cm.
9. A first diol compound represented by Formula 5; A second diol compound represented by Formula 6; Aromatic dicarboxylic acid compounds represented by the following general formula (7); And reacting a monomer mixture comprising an aromatic carbonate ester compound:

   [Formula 5]

   

   In Formula 5, R ₁ is an alkylene group having 1 to 10 carbon atoms, an alkylidene group having 2 to 10 carbon atoms, a cycloalkylene group having 5 to 12 carbon atoms or a cycloalkylidene group, and R ₂ and R ₃ are each independently carbon atoms An alkyl group or halogen atom of 1 to 10, a and b are each independently an integer of 0 to 4;

   [Formula 6]

   

   In Formula 6, A is a single bond, an oxygen atom or a sulfur atom;

   [Formula 7]

   

   In Formula 7, Ar is an arylene group having 6 to 12 carbon atoms or an arylene group having 6 to 12 carbon atoms including an oxygen atom or a sulfur atom, and R ₄ and R ₅ are each independently a hydrogen atom or an alkyl group having 1 to 5 carbon atoms to be.
10. The method of claim 9, wherein the reaction is performed at about 150 to about 330 ° C. 11.
11. Molded article formed from the resin composition containing the polyester carbonate resin in any one of Claims 1-8.