KR20150111149A - Bio-mass based polycarbonate resin composition having improved light blocking property and resin article using same - Google Patents

Abstract

Disclosed are an environmental-friendly polycarbonate resin composition having a high molecular weight, and excellent optical physical properties such as perfect ultraviolet-blocking performance or the like, and a molded product using the same. The present invention provides a bio-derived polycarbonate resin composition comprising: a polycarbonate copolymer resin containing a bio-derived repeating unit represented by chemical formula 1, and a repeating unit induced from an aromatic dihydroxy compound represented by chemical formula 2; and a light blocking agent containing a triazole-based compound, and molded product using the bio-derived polycarbonate resin composition. In chemical formula 1, R_1 to R_6 are each independently a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, or an aryl group; and m is an integer from 10 to 10,000 as a repeating unit. In chemical formula 2, R_7 to R_10 are each independently a halogen atom, an alkyl group, a cycloalkyl group, or an aryl group; a and b are each independently an integer from 0 to 4; and n is an integer from 10 to 10,000 as a repeating unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a bio-derived polycarbonate resin composition having improved optical barrier properties, and a molded article using the same. BACKGROUND ART < RTI ID = 0.0 >

The present invention relates to a polycarbonate resin composition and a molded article using the same, and more particularly, to a polycarbonate resin composition having improved gamma ray resistance and a molded article using the same.

Polycarbonate resin is excellent in impact resistance and mechanical properties, and exhibits high transparency, excellent dimensional stability, and broad coloring property. Recently, as a result of cost reduction, enlargement, and weight reduction of electric and electronic products, plastic products using polycarbonate resin The area of glass or metal material is rapidly replacing, and the range of use is expanded to electric and electronic products as well as automobile parts. As a result, the function as the exterior material and the light shielding performance are becoming more important than the existing materials.

Generally, the polycarbonate resin substrate is coated with ultraviolet rays for ultraviolet ray shielding of the polycarbonate resin. However, there is a disadvantage that the coating process takes a long time and requires investment in the deposition equipment related to the coating.

On the other hand, polymers based on aliphatic diols, especially bio-derived dihydroxy compounds such as isosorbide, are of interest to the chemical industry. Bio-derived dihydroxy compounds are derived from biological sources, i.e. sugars, instead of petroleum feedstocks used in the preparation of other polymeric structural units, are biodegradable, have a low environmental impact and are produced by the plastics manufacturing industry as renewable resources Can be used.

In recent years, attention has been paid to polycarbonate resin compositions containing such bio-derived dihydroxy compounds from the viewpoint of manufacturing environmentally-friendly plastics. However, since bioactive dihydroxy compounds are accompanied by relatively harsh reaction conditions due to low reactivity of monomers It acts as an unfavorable factor to the optical properties such as yellowing of the final composition, visible light transmittance and ultraviolet light blocking property. In addition, the polycarbonate resin containing the bio-derived dihydroxy compound is difficult to secure a high molecular weight during the polymerization process, and thus it is difficult to obtain sufficient mechanical properties.

Open Patent Publication No. 2012-0097403 discloses a thermoplastic composition comprising a homopolycarbonate containing a unit derived from an aromatic dihydroxy compound and a copolycarbonate containing an isobarbide unit and a siloxane unit, There is a problem that the mechanical properties are poor due to a small molecular weight of the resin composition, and no improvement in optical properties is mentioned.

Japanese Unexamined Patent Application Publication No. 1466503 discloses a multilayer film laminated with a thermoplastic resin material on one side of a polycarbonate resin made of isobarbide and having excellent chemical resistance and absorptivity, but since it is a co-extrusion process, .

Open Publication No. 2013-0008521 discloses a resin composition containing a polycarbonate resin, an inorganic infrared ray shielding material and a specific ultraviolet ray absorber and having high light transmittance performance and infrared ray shielding performance in a visible light region, but a petroleum feed polycarbonate It is not environmentally friendly as a resin composition, and there is no suggestion of improvement in optical properties when a bio-derived compound is employed.

Accordingly, an object of the present invention is to provide an eco-friendly polycarbonate resin composition having high molecular weight and excellent ultraviolet shielding performance and a molded article using the eco-friendly polycarbonate resin composition.

In order to solve the above problems, the present invention relates to a polycarbonate copolymer resin containing a repeating unit derived from an aromatic dihydroxy compound represented by the following general formula (2) and a bio-derived repeating unit represented by the following general formula (1) Based polycarbonate resin composition containing a barrier agent.

[Chemical Formula 1]

(Wherein R ₁ to R ₆ are each independently a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group or an aryl group, and m is an integer of 10 to 10,000 as a repeating unit)

(2)

(Wherein R ₇ to R ₁₀ are each independently a halogen atom, an alkyl group, a cycloalkyl group or an aryl group, a and b are each independently an integer of 0 to 4, and n is an integer of 10 to 10,000 as a repeating unit)

Also, the polycarbonate copolymer resin has a repeating unit derived from the biodegradable repeating unit and the aromatic dihydroxy compound in a molar ratio of 10: 1 to 1: 1.

Also, the polycarbonate copolymer resin has a weight average molecular weight of 5,000 to 90,000.

Also, the polycarbonate copolymer resin may include at least one structure selected from the group consisting of a block structure, a random structure, an alternating structure and a grafting structure.

The present invention also provides a bio-derived polycarbonate resin composition, wherein the bio-derived repeating unit is represented by the following formula (3).

(3)

(m is an integer of 10 to 10,000 as a repeating unit)

Also, the present invention provides a bio-derived polycarbonate resin composition, wherein the repeating unit derived from the aromatic dihydroxy compound is represented by the following formula (4).

[Chemical Formula 4]

(n is an integer of 10 to 10,000 as a repeating unit)

The present invention also provides a bio-derived polycarbonate resin composition, wherein the triazole-based compound is represented by the following general formula (5) or (6).

[Chemical Formula 5]

(Wherein R ₁₁ is a halogen atom, an alkyl group, a cycloalkyl group or an aryl group, R ₁₂ is a hydrogen atom or a halogen atom, and c and d are each independently an integer of 1 to 4)

[Chemical Formula 6]

(R ₁₃ and R ₁₄ are each independently a halogen atom, an alkyl group, a cycloalkyl group or an aryl group)

The present invention also provides a bio-derived polycarbonate resin composition, wherein the triazole-based compound is represented by the following general formula (7), (8) or (9)

(7)

[Chemical Formula 8]

[Chemical Formula 9]

Also, the present invention provides a bio-derived polycarbonate resin composition, wherein the triazole-based compound is contained in an amount of 10 to 10,000 ppm based on the weight of the polycarbonate copolymer resin.

In addition, the polycarbonate resin composition has an ultraviolet shielding performance of an injection specimen (3 mm thick) of less than 1% of ultraviolet transmittance (based on wavelength 350 nm) and 80% or more of visible light transmittance (based on wavelength of 450 to 800 nm) Based polycarbonate resin composition characterized in that the haze is less than 1%.

In order to solve the above-mentioned problems, the present invention provides a molded article molded from the polycarbonate resin composition.

According to the present invention, it is possible to produce a glaze sheet having excellent mechanical properties as well as excellent optical properties by appropriately containing a specific bio-derived component and having a high molecular weight of 10,000 or more with a specific light- It is possible to provide an environmentally friendly polycarbonate resin composition which does not require additional adhesion / coating process of a light blocking film and a molded article using the same.

FIG. 1 is a graph showing transmittance change according to wavelengths after measurement of transmittance of 250 to 800 nm band for an injection specimen manufactured according to Example 1,
FIG. 2 is a graph showing transmittance changes according to wavelengths after measurement of transmittance of 250 to 800 nm band for an injection specimen manufactured according to Comparative Example 1,
FIG. 3 is a graph showing transmittance changes according to wavelengths after measurement of transmittance at a band of 250 to 800 nm for an injection specimen manufactured according to Comparative Example 2. FIG.
4 is a graph showing transmittance changes according to wavelengths after measuring transmissivity of 250 to 800 nm band for an injection specimen manufactured according to Comparative Example 3. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Throughout the specification, when an element is referred to as "including " an element, it means that it can include other elements, not excluding other elements, unless specifically stated otherwise.

DISCLOSURE OF THE INVENTION The present inventors have intensively studied to make a polycarbonate resin composition containing a bio-derived dihydroxy compound as an eco-friendly resin composition have sufficient mechanical properties and have excellent optical properties such as a perfect ultraviolet shielding performance. As a result, And has a high molecular weight of 10,000 or more with a weight average molecular weight of 10,000 or more and contains a specific light blocking agent in an optimal amount so as to have not only excellent mechanical properties but also excellent optical properties. In particular, in the production of a glazing sheet, It is possible to provide an environmentally friendly polycarbonate resin composition which is free from the necessity of using an organic solvent and a molded article using the same.

Accordingly, the present invention relates to a biodegradable resin composition comprising a polycarbonate copolymer resin containing a repeating unit derived from an aromatic dihydroxy compound represented by the following general formula (2) Based polycarbonate resin composition.

[Chemical Formula 1]

(Wherein R ₁ to R ₆ are each independently a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group or an aryl group, and m is an integer of 10 to 10,000 as a repeating unit)

(2)

(Wherein R ₇ to R ₁₀ are each independently a halogen atom, an alkyl group, a cycloalkyl group or an aryl group, a and b are each independently an integer of 0 to 4, and n is an integer of 10 to 10,000 as a repeating unit)

Derived repeating unit is derived from a biodegradable dihydroxy compound represented by the following general formula (10), and replaces a part of the bisphenol A repeating unit in a conventional bisphenol A-based polycarbonate resin. In the production of the biodegradable monomer, In other words, since the process of absorbing carbon dioxide is accompanied, it can be considered that carbon dioxide is generated in a smaller amount than the production of bisphenol A monomers derived from petrochemicals.

[Chemical formula 10]

(R ₁ to R ₆ are each independently a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group or an aryl group)

In the presence of an aryl group among R ₁ to R ₆ , a conjugation between repeating structures may be generated to lower the visible light transmittance of the resin composition, and there may be a bulky group such as an alkyl group, a cycloalkyl group or a halogen atom among R ₁ to R ₆ The steric hindrance may be generated to lower the polymerization reactivity of the monomer.

Therefore, it is preferable that the bio-derived dihydroxy compound has the structure of the following formula (11).

(11)

The compound of formula 11 may be derived from a mixture of isomers of isobarbide as an isobarbide monomer or may be derived from the individual isomers of the isobarbide. The stereochemistry of the isobarbide monomer of formula (11) is not particularly limited. For example, the isobarbide monomer has a structure represented by the general formula (11) as a general formula, and may be a dihydroxy compound alone or a mixture of dihydroxy compound isomers. Namely, 1,4,3,6-dianhydro-L-iditol of the following formula (12), 1,4: 3,6-dianhydro-D-glucitol of the following formula (13) 1,4; 3,6-dianhydro-D-iditol of formula (14) or a mixture of two or more thereof.

[Chemical Formula 12]

[Chemical Formula 13]

[Chemical Formula 14]

The repeating unit represented by the formula (2) is derived from an aromatic dihydroxy compound represented by the following formula (15).

[Chemical Formula 15]

(Wherein R ₇ to R ₁₀ are each independently a halogen atom, an alkyl group, a cycloalkyl group or an aryl group, and a and b are each independently an integer of 0 to 4)

The aromatic dihydroxy compound represented by the formula (15) is preferably a structure represented by the following formula (16) when the compatibility with the light-blocking agent, the unit price of the monomer,

[Chemical Formula 16]

The two dihydroxy compounds can be polymerized by being simultaneously or sequentially introduced into the reactor, and the content of the dihydroxy compound derived from the biodegradable compound and the aromatic dihydroxy compound can be variously selected from a molar ratio of 10: 1 to 1: 1 , Preferably from 5: 1 to 1: 1, more preferably from 2: 1 to 1: 1. If the molar ratio is more than 10: 1, the molecular weight of the polymer becomes small, and the mechanical properties may decrease. On the other hand, as described later, the polycarbonate copolymer resin can be obtained by reacting a dihydroxy compound with a carbonate precursor. For example, the reaction activity using only isobarbide and diphenyl carbonate is higher than the reaction activity between diphenyl carbonate and bisphenol A It is difficult to obtain a polymer having a high molecular weight. As a result, the mechanical strength of the polymer may be lowered. However, according to one embodiment of the present invention, a polycarbonate copolymer resin having a weight average molecular weight of 10,000 or more can be obtained through a ternary copolymerization reaction of isobarbide, diphenyl carbonate and bisphenol A. At this time, the molecular weight of the polycarbonate copolymer resin is preferably 5,000 to 90,000, more preferably 10,000 to 70,000, based on the weight average molecular weight (Mw).

The process for synthesizing the polycarbonate copolymer resin in the present invention is not particularly limited. For example, by reacting a dihydroxy compound with a carbonate precursor. Examples of such synthesis methods include an interfacial polymerization method and a melt ester exchange method.

Synthesis by interfacial polymerization can be carried out by the reaction of a dihydroxy compound with phosgene and can be carried out in the presence of an acid binder and an organic solvent. Examples of the acid coupling agent include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, and pyridine.

As the organic solvent, for example, halogenated hydrocarbons such as methylene chloride and chlorobenzene can be used. For promoting the reaction, for example, a catalyst such as a tertiary amine or a quaternary ammonium salt may be used. As the molecular weight regulator, monofunctional phenols such as phenol, p-tert-butylphenol and p-cumylphenol are preferable Lt; / RTI > Examples of monofunctional phenols include decylphenol, dodecylphenol, tetradecylphenol, hexadecylphenol, octadecylphenol, eicosylphenol, docosylphenol and triacontylphenol. Such monofunctional phenols having a relatively long chain alkyl group can be effectively used when improvement of fluidity or hydrolysis resistance is required.

The reaction temperature in the interfacial polymerization method may be usually from 0 to 40 ° C, the reaction time is preferably from several minutes to 5 hours, and the pH during the reaction is preferably maintained at 10 or more.

On the other hand, the synthesis by the melting method can be carried out by an ester exchange reaction between a dihydroxy compound and a carbonic acid diester. The dihydroxy compound and the carbonic acid diester are mixed in the presence of an inert gas, Lt; / RTI > The degree of decompression is changed stepwise, and finally, the pressure is reduced to 133 Pa or lower, so that the generated phenols can be removed from the system. The reaction time can be usually about 1 to 4 hours.

Specific examples of the carbonic acid diester include diphenyl carbonate, dinaphthyl carbonate, bis (diphenyl) carbonate, dimethyl carbonate, diethyl carbonate, and dibutyl carbonate, among which diphenyl carbonate can be preferably used .

Polymerization catalysts may be used to accelerate the polymerization rate in the course of the polycarbonate copolymer resin synthesis. Examples of the polymerization catalyst include alkali metal or alkaline earth metal hydroxides such as sodium hydroxide and potassium hydroxide, hydroxides such as boron and aluminum, alkali metal salts, alkaline earth metal salts, quaternary ammonium salts, alkoxides of alkali metals or alkaline earth metals, A catalyst usually used for an esterification reaction or an ester exchange reaction such as an organic acid salt of a metal, a zinc compound, a boron compound, a silicon compound, a germanium compound, an organotin compound, a lead compound, an antimony compound, a manganese compound, a titanium compound and a zirconium compound . The polymerization catalyst may be used alone or in combination of two or more. The amount of the polymerization catalyst relative to the raw material dihydroxy compound per mol, preferably from ^{1 × 10 -9 ~ 1 × 10} - 5 equivalents, more preferably ^{1 × 10 -8 ~ 5 × 10} - ⁶ eq. ≪ / RTI >

As the polycarbonate copolymer resin thus synthesized, a resin having various structures such as a block structure, a random structure, an alternating structure, and a grafting structure may be used.

In the present invention, a light-blocking agent consisting essentially of a triazole-based compound is added to the polycarbonate resin to improve the ultraviolet blocking performance and the visible light transmission performance. The light-blocking agent means a compound that blocks ultraviolet energy or selectively absorbs ultraviolet energy to release it as other types of energy that are not harmful to the polymer, or inhibits the photoreaction of the polymer, in particular, the photodecomposition initiation reaction.

The triazole type compound represented by the general formula (5) or (6) may be used alone or as a mixture of two or more kinds thereof as the light blocking agent and may be added to the polycarbonate copolymer resin. More preferably, the triazole type compound represented by the following general formulas Based compound may be used alone or in admixture of two or more, and added to the polycarbonate copolymer resin.

[Chemical Formula 5]

(Wherein R ₁₁ is a halogen atom, an alkyl group, a cycloalkyl group or an aryl group, R ₁₂ is a hydrogen atom or a halogen atom, and c and d are each independently an integer of 1 to 4)

[Chemical Formula 6]

(R ₁₃ and R ₁₄ are each independently a halogen atom, an alkyl group, a cycloalkyl group or an aryl group)

(7)

[Chemical Formula 8]

[Chemical Formula 9]

It is important that such a light-blocking agent is added in an optimal amount for ensuring effective optical properties and processability in the polycarbonate resin composition according to the present invention, in which the content of the bio-derived dihydroxy compound is relatively high. The amount of the light blocking agent to be added may be 10 to 10,000 ppm, preferably 100 to 5,000 ppm, more preferably 500 to 5,000 ppm, and most preferably 1,000 to 3,000 ppm, based on the weight of the polycarbonate copolymer resin Lt; / RTI > When the addition amount of the light-shielding agent is within the above range, it can be used without causing problems such as light blocker bleeding on the surface of the molded article, deterioration of mechanical properties of various molded articles, and increase of haze.

The molded article molded using the polycarbonate resin composition according to the present invention preferably has excellent transparency depending on the properties required in the field of use. The transparency of such a molded product can be evaluated by the total light transmittance in the visible light region, and it is preferable that the visible light transmittance is high. According to an example of the present invention, a polyimide having an ultraviolet transmittance (based on a wavelength of 350 nm) of less than 1% and a haze of less than 1% has a visible light transmittance (based on a wavelength of 450 to 800 nm) of an injection specimen It is possible to provide a molded product of a carbonate resin.

Hereinafter, a specific embodiment of the present invention will be described.

Polycarbonate copolymer Manufacturing example

The polycarbonate copolymer was prepared from the isobarbide (ISS) monomer represented by the formula (11), bisphenol A (BPA) represented by the formula (16) and diphenyl carbonate (DPC) represented by the following formula (17) ≪ RTI ID = 0.0 > polycarbonate < / RTI > Specifically, 1.0 L of a mixture of ISS and BPA, 1.0 mol of DPC, and a polymerization catalyst were introduced into a 1 L reactor after flowing nitrogen for 15 minutes. The molar ratios of ISS to BPA were 1: 1 (Preparation 1), 2: 1 (Preparation 2), 3: 1 (Preparation 3), 5: 5). Thereafter, the reactor temperature was maintained at 180 DEG C for 1 hour, the monomer was completely melted and the pressure in the reactor was slowly lowered from 760 torr to 1 torr. The temperature of the reactor was increased from 180 ° C to 240 ° C for 3 hours, and the polymer was further reacted at 240 ° C for 30 minutes. Table 1 shows changes in molecular weight according to the molar ratio of ISS to BPA.

[Chemical Formula 17]

[Chemical Formula 18]

Example  One

The triazole-based light blocking agent having the structure of the above formula (8) was added to the polycarbonate copolymer obtained in Preparation Example 1 at a content of 2,000 ppm based on the weight of the polycarbonate copolymer, and the mixture was blended using a blender, Followed by kneading to prepare a resin pellet. At this time, the extrusion conditions were a discharge rate of 15 kg / h, a screw rotation rate of 150 rpm, and an extrusion temperature of 180 to 250 ° C. Then, the resin pellets prepared by using the hot-air dryer were dried at 100 ° C. for about 4 hours, and then the resin pellets dried at a cylinder temperature of 180 ° C. to 250 ° C. and a room temperature of room temperature were applied to a 3 mm thick And injected with a sample.

Example  2

An injection specimen was prepared in the same manner as in Example 1, except that the polycarbonate copolymer obtained in Preparation Example 2 was used in Example 1.

Example  3

An injection specimen was prepared in the same manner as in Example 1, except that the polycarbonate copolymer obtained in Preparation Example 3 was used in Example 1.

Example  4

An injection specimen was prepared in the same manner as in Example 1, except that the polycarbonate copolymer obtained in Preparation Example 4 was used.

Example  5

An injection specimen was prepared in the same manner as in Example 1, except that the polycarbonate copolymer obtained in Preparation Example 5 was used.

Test Example  One

The haze of the specimens prepared according to Examples 1 to 5 was measured using NDH-5000 haze meter manufactured by Nippon Denshoku Industries Co. The results are shown in Table 2 below.

Referring to Table 2, it can be seen that when 2,000 ppm based on the weight of the polycarbonate copolymer is added to the light blocking agent, the ISS: BPA molar ratio shows the smallest haze at 1: 1. That is, since the ISS repeating structure does not mix well with the triazole-based light-blocking agent, when the amount of the light-blocking agent is increased to 2,000 ppm, the haze value increases as the ISS content increases. However, the BPA monomer having a good mixing property with the triazole- , It is possible to secure an excellent haze in the production of the ISS-BPA-DPC three-dimensional polycarbonate copolymer, and further, as described later, excellent UV blocking performance and visible light transmittance can be ensured.

Comparative Example  One

An injection specimen was prepared in the same manner as in Example 1, except that no light blocking agent was added in Example 1.

Comparative Example  2

An injection specimen was prepared in the same manner as in Example 1, except that a cyanoacryl ester-based light-blocking agent having a structure represented by the following formula (19) was added in Example 1.

[Chemical Formula 19]

Comparative Example  3

An injection specimen was prepared in the same manner as in Example 1 except that benzylidene-bis-malonate-based light-blocking agent having a structure represented by the following general formula (20) was added in Example 1.

[Chemical Formula 20]

Test Example  2

The transmittance of the specimens prepared according to Example 1 and Comparative Examples 1 to 3 was measured using a Shimadzu UV-3600 model and the transmittance was measured at 250 to 800 nm. The transmittance changes according to wavelengths are shown in FIGS. 1 to 4, respectively .

1 to 4, when a desired light blocking agent according to the present invention is added (Example 1), ultraviolet rays of 400 nm or less are completely blocked, and the transmittance of the visible light region of 450 to 800 nm is maintained at 90% . That is, the ultraviolet ray and the visible ray have excellent selective blocking property against ultraviolet rays. On the other hand, it can be confirmed that ultraviolet rays of 400 nm or less are transmitted when the light blocking agent is not added (Comparative Example 1). In addition, when a light-blocking agent other than a triazole-based light-blocking agent is added (Comparative Examples 2 and 3), ultraviolet rays near 400 nm can not be completely blocked, and in the case of Comparative Example 2, the transmittance in a visible light region of 450 to 800 nm is 90 %, It was confirmed that the selective blocking performance against ultraviolet light was lower than that of Example 1. [

Example  6

An injection specimen was prepared in the same manner as in Example 1, except that the triazole-based light blocking agent was added in an amount of 500 ppm based on the weight of the polycarbonate copolymer.

Example  7

An injection specimen was prepared in the same manner as in Example 1, except that the triazole-based light-blocking agent was added in an amount of 1,000 ppm based on the weight of the polycarbonate copolymer.

Example  8

An injection specimen was prepared in the same manner as in Example 1, except that the triazole-based light blocking agent was added in an amount of 5,000 ppm based on the weight of the polycarbonate copolymer.

Test Example  3

The haze was measured using a NDH-5000 haze meter manufactured by Nippon Denshoku Industries, and the transmittance of 400 nm was measured using a UV-3600 model manufactured by Shimadzu Co. , And the results are shown in Table 3 below.

Referring to Table 3, when the ISS: BPA molar ratio is 1: 1, when the light blocking agent is added in an amount of 1,000 to 2,000 ppm, ultraviolet shielding performance and haze are most excellent.

The molded article produced using the polycarbonate resin composition according to the present invention can be effectively used for a vehicle window member, particularly, a backdoor window, a sunroof, and a roof panel. In addition, the molded article according to the present invention can be used as a window member for a building material, a vehicle lamp, a window for a building, a house, a greenhouse, a roof for a garage, an arcade, It can be used for a wide range of applications such as a signal lens, a lens of an optical device, a mirror, a spectacle, a goggle, a noise wall, a motorcycle, a name plate, a solar battery cover or a solar battery substrate, Therefore, the molded article according to the present invention is useful for various electronic and electric devices, OA equipment, vehicle parts, machine parts, other agricultural materials, fishery materials, transport containers, packaging containers,

On the other hand, the anticipated effect when used in automobile window members, particularly in backdoor windows, sunroofs and roof panels, is that the use of lightweight materials compared to glass improves fuel economy, reduces the risk of car theft due to the excellent impact strength of polycarbonate, And the application of various colors, textures and designs due to excellent processability compared to glass.

In addition, when used as a window for a building or an agricultural cultivation facility, it can be expected to increase the insulation efficiency of buildings and agricultural facilities, reduce the heating and cooling costs, and reduce the variation of the room temperature due to the day-to-day variation.

The preferred embodiments of the present invention have been described in detail above. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Accordingly, the scope of the present invention is defined by the appended claims rather than the foregoing detailed description, and all changes or modifications derived from the meaning, range, and equivalence of the claims are included in the scope of the present invention Should be interpreted.

Claims (11)

Derived polycarbonate resin composition comprising a polycarbonate copolymer resin containing a repeating unit derived from an aromatic dihydroxy compound represented by the following formula (2) and a triazole-based compound: .
[Chemical Formula 1]

(Wherein R ₁ to R ₆ are each independently a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group or an aryl group, and m is an integer of 10 to 10,000 as a repeating unit)
(2)

(Wherein R ₇ to R ₁₀ are each independently a halogen atom, an alkyl group, a cycloalkyl group or an aryl group, a and b are each independently an integer of 0 to 4, and n is an integer of 10 to 10,000 as a repeating unit) The method according to claim 1,
Wherein the polycarbonate copolymer resin has a repeating unit derived from the biodegradable repeating unit and the aromatic dihydroxy compound in a molar ratio of 10: 1 to 1: 1. The method according to claim 1,
Wherein the polycarbonate copolymer resin has a weight average molecular weight of 5,000 to 90,000. The method according to claim 1,
Wherein the polycarbonate copolymer resin comprises at least one structure selected from the group consisting of a block structure, a random structure, an alternating structure and a grafting structure. The method according to claim 1,
Derived polycarbonate resin composition is characterized in that the bio-derived repeating unit is represented by the following formula (3).
(3)

(m is an integer of 10 to 10,000 as a repeating unit) The method according to claim 1,
Derived polycarbonate resin composition, wherein the aromatic dihydroxy compound-derived repeating unit is represented by the following formula (4).
[Chemical Formula 4]

(n is an integer of 10 to 10,000 as a repeating unit) The method according to claim 1,
Wherein the triazole-based compound is represented by the following general formula (5) or (6).
[Chemical Formula 5]

(Wherein R ₁₁ is a halogen atom, an alkyl group, a cycloalkyl group or an aryl group, R ₁₂ is a hydrogen atom or a halogen atom, and c and d are each independently an integer of 1 to 4)
[Chemical Formula 6]

(R ₁₃ and R ₁₄ are each independently a halogen atom, an alkyl group, a cycloalkyl group or an aryl group) 8. The method of claim 7,
Wherein the triazole-based compound is represented by the following general formula (7), (8) or (9).
(7)

[Chemical Formula 8]

[Chemical Formula 9]

The method according to claim 1,
Based polycarbonate resin composition according to claim 1, wherein the triazole-based compound is contained in an amount of 10 to 10,000 ppm based on the weight of the polycarbonate copolymer resin. The method according to claim 1,
The polycarbonate resin composition was found to have an ultraviolet shielding performance of an injection specimen (3 mm thick) of less than 1% of ultraviolet transmittance (wavelength 350 nm) and 80% or more of visible light transmittance (wavelength of 450 to 800 nm) Based polycarbonate resin composition. A molded article molded from the polycarbonate resin composition according to any one of claims 1 to 10.

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