JPH07109413A - Iridescent resin composition - Google Patents
Iridescent resin compositionInfo
- Publication number
- JPH07109413A JPH07109413A JP25827593A JP25827593A JPH07109413A JP H07109413 A JPH07109413 A JP H07109413A JP 25827593 A JP25827593 A JP 25827593A JP 25827593 A JP25827593 A JP 25827593A JP H07109413 A JPH07109413 A JP H07109413A
- Authority
- JP
- Japan
- Prior art keywords
- lactic acid
- resin
- acid
- aromatic polycarbonate
- polycarbonate resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、真珠光沢を有し、高度
の流動性とバランスのよい熱的・機械的物性を具備する
樹脂組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition having a pearly luster and having a high degree of fluidity and well-balanced thermal and mechanical properties.
【0002】[0002]
【従来の技術】一般に、毒性の強い真珠顔料を用いずに
真珠光沢を示す樹脂組成物を得るには、溶融粘度が著し
く異なり、かつ屈折率の異なる複数の透明樹脂を混合す
ることが有効であると考えられている。特公昭47-16063
公報に開示されているように、芳香族ポリカーボネート
樹脂とアクリル系樹脂から成る組成物は真珠光沢を有す
る樹脂組成物を与える。しかしこの組成物は、芳香族ポ
リカーボネート樹脂の長所の一つである高い耐熱性が比
較的大きく低下し、かつ短所である低い流動性があまり
改善されないという難点がある。特開平2-284949公報に
は、耐熱性の低下を改善する目的でアクリル樹脂を特に
メチルメタクリレートとα- メチルスチレンの共重合体
とし、芳香族ポリカーボネート樹脂に配合して成る組成
物が開示されている。しかしこの組成物は機械的物性に
劣り、また流動性の低さもあまり改善されない。こうし
たアクリル系樹脂の添加による組成物はいずれも、真珠
光沢を付与するのに必要な添加量をかなり越えてアクリ
ル系樹脂を添加しなければ流動性の向上が不十分であ
り、一方添加量が多くなると熱的・機械的物性が大きく
低下する難点がある。このため該組成物は大型・薄肉の
成形物が得にくく、用途が装飾品その他の雑貨類に制限
されるという問題があった。2. Description of the Related Art Generally, in order to obtain a resin composition exhibiting a pearl luster without using a highly toxic pearl pigment, it is effective to mix a plurality of transparent resins having remarkably different melt viscosities and different refractive indexes. Is believed to be. Japanese Patent Publication 47-16063
As disclosed in the publication, a composition composed of an aromatic polycarbonate resin and an acrylic resin gives a resin composition having a pearlescent luster. However, this composition has a drawback in that the high heat resistance, which is one of the advantages of the aromatic polycarbonate resin, is relatively greatly reduced, and the low flowability, which is a disadvantage, is not improved so much. JP-A-2-284949 discloses a composition in which an acrylic resin is used as a copolymer of methyl methacrylate and α-methylstyrene for the purpose of improving the decrease in heat resistance, and is blended with an aromatic polycarbonate resin. There is. However, this composition is inferior in mechanical properties and the low fluidity is not improved so much. In any of the compositions obtained by adding such an acrylic resin, improvement in fluidity is insufficient unless the acrylic resin is added in an amount far exceeding the addition amount required to impart pearl luster, while the addition amount is If the amount increases, there is a drawback that the thermal / mechanical properties are significantly deteriorated. For this reason, it is difficult to obtain a large-sized / thin-walled molded product from the composition, and there is a problem that its use is limited to ornaments and other miscellaneous goods.
【0003】[0003]
【発明が解決しようとする課題】本発明は、真珠光沢を
有し、高度の流動性とバランスのよい熱的・機械的物性
を具備する、用途上の制限の少ない樹脂組成物を提供す
ることを目的とする。DISCLOSURE OF THE INVENTION The present invention provides a resin composition having a pearly luster and having a high degree of fluidity and a well-balanced thermal and mechanical physical property, which has few restrictions in use. With the goal.
【0004】[0004]
【課題を解決するための手段】本発明者らは上記課題を
解決すべく鋭意研究を行った結果、芳香族ポリカーボネ
ート樹脂に、アクリル系とは異なる特定構造の脂肪族ポ
リエステルを添加することにより上記目的を達成するこ
とを見いだし、本発明を完成するに至った。即ち本発明
は、芳香族ポリカーボネート樹脂と、ポリ乳酸および/
または乳酸類とその他のヒドロキシカルボン酸との共重
合体(以下乳酸系樹脂と総称する)から成る、真珠光沢
を有し、高度の流動性とバランスのよい熱的・機械的物
性を具備する樹脂組成物に関するものである。Means for Solving the Problems The inventors of the present invention have conducted extensive studies to solve the above problems, and as a result, by adding an aliphatic polyester having a specific structure different from an acrylic type to an aromatic polycarbonate resin, The inventors have found that the objectives have been achieved and have completed the present invention. That is, the present invention, an aromatic polycarbonate resin, polylactic acid and /
A resin composed of a copolymer of lactic acid and other hydroxycarboxylic acid (hereinafter collectively referred to as lactic acid-based resin), which has a pearlescent luster and has a high degree of fluidity and well-balanced thermal and mechanical properties. It relates to a composition.
【0005】本発明に使用する芳香族ポリカーボネート
樹脂は、2価フェノールとカーボネート前駆体とを溶液
法、溶融法などの公知の方法で反応させ、製造される物
である。2価フェノールの代表的なものとしてはハイド
ロキノン、レゾルシノール、2,2-ビス(4-ヒドロキシフ
ェニル)プロパン、ビス(4-ヒドロキシフェニル)メタ
ン、2,2-ビス(4-ヒドロキシ-3,5- ジメチルフェニル)
プロパン、2,2-ビス(4-ヒドロキシ-3,5- ジブロモフェ
ニル)プロパン、2,2-ビス(4-ヒドロキシ-3-メチルフ
ェニル)プロパン、ビス(4-ヒドロキシフェニル)サル
ファイド、ビス(4-ヒドロキシフェニル)スルホン等が
挙げられる。特にビス(4-ヒドロキシフェニル)アルカ
ン系が好ましく、なかでも通常ビスフェノールAと称さ
れる2,2-ビス(4-ヒドロキシフェニル)プロパンが好適
である。また、カーボネート前駆体としてはカルボニル
ハライド、カルボニルエステルおよびハロホルメート等
が挙げられ、具体的にはホスゲン、ジフェニルカーボネ
ート、2価フェノールのジハロホルメート等がある。ポ
リカーボネート樹脂の製造に際し、適当な分子量調節
剤、分岐剤、その他の改質剤などの添加は差し支えな
い。また2価フェノール、カーボネート前駆体はいずれ
も単独あるいは2種以上で使用することができ、さらに
得られたポリカーボネート樹脂を2種以上混合使用して
もよい。本発明においては、ビスフェノールAを主原料
とするポリカーボネート樹脂が良好な結果を与える。The aromatic polycarbonate resin used in the present invention is a product produced by reacting a dihydric phenol with a carbonate precursor by a known method such as a solution method or a melting method. Typical dihydric phenols are hydroquinone, resorcinol, 2,2-bis (4-hydroxyphenyl) propane, bis (4-hydroxyphenyl) methane and 2,2-bis (4-hydroxy-3,5-). Dimethylphenyl)
Propane, 2,2-bis (4-hydroxy-3,5-dibromophenyl) propane, 2,2-bis (4-hydroxy-3-methylphenyl) propane, bis (4-hydroxyphenyl) sulfide, bis (4 -Hydroxyphenyl) sulfone and the like. Particularly, bis (4-hydroxyphenyl) alkane-based compounds are preferable, and 2,2-bis (4-hydroxyphenyl) propane, which is usually referred to as bisphenol A, is particularly preferable. Further, examples of the carbonate precursor include carbonyl halide, carbonyl ester, haloformate and the like, and specific examples thereof include phosgene, diphenyl carbonate and dihaloformate of dihydric phenol. In the production of the polycarbonate resin, addition of an appropriate molecular weight modifier, branching agent, other modifier, etc. may be carried out. Further, each of the dihydric phenol and the carbonate precursor may be used alone or in combination of two or more kinds, and the obtained polycarbonate resin may be used in combination of two or more kinds. In the present invention, a polycarbonate resin containing bisphenol A as a main raw material gives good results.
【0006】本発明における乳酸系樹脂の中で、ポリ乳
酸は通常ラクタイドと呼ばれる乳酸の環状二量体から開
環重合により合成され、その製造方法に関してはUSP
1,995,970 、USP2,362,511、USP2,683,136 に開
示されている。また乳酸とその他のヒドロキシカルボン
酸の共重合体は通常ラクタイドとヒドロキシカルボン酸
の環状エステル中間体から開環重合により合成され、そ
の製造法に関してはUSP3,635,956 、USP3,797,49
9 に開示されている。開環重合によらず直接脱水重縮合
により乳酸系樹脂を製造する場合には、乳酸類と必要に
応じて他のヒドロキシカルボン酸を好ましくは有機溶
媒、特にフェニルエーテル系溶媒の存在下で共沸脱水縮
合し、特に好ましくは共沸により留出した溶媒から水を
除き実質的に無水の状態にした溶媒を反応系に戻す方法
によって重合することにより、本発明に適した重合度の
乳酸系樹脂が得られる。原料の乳酸類としてはL-および
D-乳酸、またはその混合物、乳酸の二量体であるラクタ
イドのいずれも使用できる。また乳酸類と併用できる他
のヒドロキシカルボン酸類としては、グリコール酸、3-
ヒドロキシ酪酸、4-ヒドロキシ酪酸、4-ヒドロキシ吉草
酸、5-ヒドロキシ吉草酸、6-ヒドロキシカプロン酸など
があり、さらにヒドロキシカルボン酸の環状エステル中
間体、例えばグリコール酸の二量体であるグリコライド
や6-ヒドロキシカプロン酸の環状エステルであるε- カ
プロラクトンを使用することもできる。乳酸系樹脂の製
造に際し、適当な分子量調節剤、分岐剤、その他の改質
剤などの添加は差し支えない。また乳酸類、および共重
合体成分としてのヒドロキシカルボン酸類はいずれも単
独あるいは2種以上で使用することができ、さらに得ら
れた乳酸系樹脂を2種以上混合使用してもよい。本発明
においては乳酸類のみの重合体であるポリ乳酸が好適に
用いられ、とりわけL-乳酸を主原料とするポリL-乳酸樹
脂が好ましい。Among the lactic acid-based resins in the present invention, polylactic acid is usually synthesized from a cyclic dimer of lactic acid called lactide by ring-opening polymerization.
1,995,970, USP 2,362,511, USP 2,683,136. Copolymers of lactic acid and other hydroxycarboxylic acids are usually synthesized by ring-opening polymerization from a cyclic ester intermediate of lactide and hydroxycarboxylic acid, and the production method thereof is described in USP 3,635,956 and USP 3,797,49.
It is disclosed in 9. When a lactic acid-based resin is produced by direct dehydration polycondensation without ring-opening polymerization, lactic acid and other hydroxycarboxylic acid, if necessary, are preferably azeotropically distilled in the presence of an organic solvent, particularly a phenyl ether-based solvent. A lactic acid-based resin having a degree of polymerization suitable for the present invention is obtained by polymerizing by dehydration condensation, and particularly preferably by removing water from the solvent distilled by azeotropic distillation and returning the substantially anhydrous solvent to the reaction system. Is obtained. L-and as the raw material lactic acid
Any of D-lactic acid, a mixture thereof, or lactide which is a dimer of lactic acid can be used. Other hydroxycarboxylic acids that can be used in combination with lactic acid include glycolic acid, 3-
Hydroxybutyric acid, 4-hydroxybutyric acid, 4-hydroxyvaleric acid, 5-hydroxyvaleric acid, 6-hydroxycaproic acid, etc., and further cyclic ester intermediates of hydroxycarboxylic acids, for example glycolide, a dimer of glycolic acid. Alternatively, ε-caprolactone, which is a cyclic ester of 6-hydroxycaproic acid, can be used. In producing the lactic acid-based resin, addition of an appropriate molecular weight modifier, branching agent, other modifier, etc. may be carried out. The lactic acid and the hydroxycarboxylic acid as a copolymer component may be used alone or in combination of two or more kinds, and the obtained lactic acid based resin may be used in combination of two or more kinds. In the present invention, polylactic acid, which is a polymer of only lactic acid, is preferably used, and a poly L-lactic acid resin containing L-lactic acid as a main raw material is particularly preferable.
【0007】本発明に用いられる芳香族ポリカーボネー
ト樹脂および乳酸系樹脂の分子量については特に制限が
ない。一般に芳香族ポリカーボネート樹脂は乳酸系樹脂
よりもはるかに溶融粘度が高い。例えば芳香族ポリカー
ボネート樹脂が通常の射出成形に用いられる重量平均分
子量5万程度のもので、乳酸系樹脂の重量平均分子量が
その2倍の10万であっても、成型加工範囲の温度での溶
融粘度は芳香族ポリカーボネート樹脂の方が約数十〜数
百倍も大きく、真珠光沢の発現や流動性改良の効果には
支障が無い。従って乳酸系樹脂の分子量は大きい方が熱
的・機械的物性の面から好ましく、具体的には重量平均
分子量で3万以上のものが好適である。本発明の組成物
においては、芳香族ポリカーボネート樹脂と乳酸系樹脂
は任意の比率で用いられるが、本発明の特徴である真珠
光沢をより良く発現させるためには前者が10〜90重量
%、後者が90〜10重量%の比率が良好な結果を与える。
更に熱的・機械的物性の面からは前者が50〜90重量%、
後者が50〜10重量%の範囲が特に好適と言える。There are no particular restrictions on the molecular weight of the aromatic polycarbonate resin and the lactic acid resin used in the present invention. Aromatic polycarbonate resins generally have a much higher melt viscosity than lactic acid resins. For example, an aromatic polycarbonate resin with a weight average molecular weight of about 50,000 used for ordinary injection molding, and even if the weight average molecular weight of the lactic acid resin is 100,000, which is twice that of the lactic acid resin, melting at a temperature within the molding processing range The viscosity of the aromatic polycarbonate resin is about several tens to several hundreds of times higher, and there is no problem with the expression of pearl luster and the effect of improving fluidity. Therefore, it is preferable that the lactic acid-based resin has a large molecular weight from the viewpoint of thermal and mechanical properties, and specifically, one having a weight average molecular weight of 30,000 or more is preferable. In the composition of the present invention, the aromatic polycarbonate resin and the lactic acid-based resin are used in an arbitrary ratio, but the former is 10 to 90% by weight, and the latter is the latter in order to better develop the pearlescent luster that is the characteristic of the present invention. A ratio of 90 to 10% by weight gives good results.
In terms of thermal and mechanical properties, the former is 50 to 90% by weight,
It can be said that the latter is particularly preferably in the range of 50 to 10% by weight.
【0008】上記組成物には、本発明の特性を損なわな
い範囲に於て各種エラストマー、可塑剤、顔料、安定
剤、離型剤、難燃剤、その他の添加剤やフィラー類を目
的や用途に応じて適宜使用することができる。本発明の
樹脂組成物の製造方法については特に制限はなく、通常
公知の方法を採用することができる。すなわち、芳香族
ポリカーボネート樹脂、乳酸系樹脂およびその他必要と
する成分を高速撹拌機等で均一混合した後、十分な混練
能力のある一軸あるいは多軸の押出機、混合ロール、ニ
ーダー、ブラベンダー等で溶融混練する方法等で製造で
きる。また両成分をクロロホルムやその他の適当な溶媒
に溶解・膨潤させ機械的に、あるいは超音波などを用い
て撹拌したのち、溶媒を蒸発せしめ濃縮する方法も有効
である。In the above composition, various elastomers, plasticizers, pigments, stabilizers, release agents, flame retardants, and other additives and fillers are used for the purpose and application within the range not impairing the characteristics of the present invention. It can be used as appropriate. The method for producing the resin composition of the present invention is not particularly limited, and a commonly known method can be adopted. That is, after uniformly mixing the aromatic polycarbonate resin, the lactic acid resin and other necessary components with a high-speed stirrer, etc., with a uniaxial or multiaxial extruder having sufficient kneading ability, a mixing roll, a kneader, a Brabender, etc. It can be produced by a method such as melt kneading. It is also effective to dissolve and swell both components in chloroform or another suitable solvent, mechanically or by using ultrasonic waves, and then evaporate the solvent to concentrate it.
【0009】[0009]
【実施例】以下実施例によって本発明を具体的に説明す
るが、本発明はこれらの実施例によって限定される物で
はない。また文中に「%」、「部」および「分子量」と
あるのは、特に断わらない限り重量基準である。重量平
均分子量はゲルパーミエーションクロマトグラフィーで
測定し、ポリスチレン換算の値で示した。 実施例1〜3 公表平4−504731号公報に開示する方法により製造した
重量平均分子量11万のポリL-乳酸樹脂(以下「乳酸系樹
脂1」と略称)およびポリカーボネート樹脂(帝人化成
(株)製、パンライトL-1225)を表1に示す割合で配合
したのちタンブラーミキサーで十分に混合して、スクリ
ュー径37mm、L/D=32の二軸押出機にて、溶融温度250
℃、スクリュー回転数80rpmで溶融混合し、押出してペ
レット状の成形材料組成物を得た。上記の方法で得られ
た組成物を280 〜250 ℃に設定した射出成形機で試験片
に成形し、それぞれの物性を測定した。結果を表1に示
す。高度の流動性とバランスのよい物性を保ちながら、
真珠光沢を付与することが可能であった。EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. Further, “%”, “part” and “molecular weight” in the text are based on weight unless otherwise specified. The weight average molecular weight was measured by gel permeation chromatography and shown in terms of polystyrene. Examples 1 to 3 Poly L-lactic acid resin having a weight average molecular weight of 110,000 (hereinafter abbreviated as "lactic acid-based resin 1") and polycarbonate resin (Teijin Kasei Co., Ltd.) produced by the method disclosed in JP-A-4-504731. Manufactured by Panlite L-1225) in the proportions shown in Table 1 and thoroughly mixed in a tumbler mixer, and then melted at a melting temperature of 250 with a twin screw extruder with a screw diameter of 37 mm and L / D = 32.
The mixture was melt-mixed at 0 ° C. and a screw rotation speed of 80 rpm, and extruded to obtain a pelletized molding material composition. The composition obtained by the above method was molded into a test piece by an injection molding machine set at 280 to 250 ° C., and the physical properties of each were measured. The results are shown in Table 1. While maintaining high fluidity and well-balanced physical properties,
It was possible to give pearl luster.
【0010】実施例4 同じく重量平均分子量11万のポリDL- 乳酸樹脂(以下
「乳酸系樹脂2」と略称)を用いて同様に評価した。結
果を表2に示す。この場合も、良好な結果が得られた。 実施例5 同じくL-乳酸80部とグリコール酸20部よりなる重量平均
分子量10万の共重合体樹脂(以下「乳酸系樹脂3」と略
称)を用いて同様に評価した。結果を表2に示す。この
場合も、良好な結果が得られた。 実施例6 同じくL-乳酸80部と6-ヒドロキシカプロン酸20部よりな
る重量平均分子量10万の共重合体樹脂(以下「乳酸系樹
脂4」と略称)を用いて同様に評価した。結果を表2に
示す。この場合も、良好な結果が得られた。Example 4 Similarly, a polyDL-lactic acid resin having a weight average molecular weight of 110,000 (hereinafter abbreviated as "lactic acid-based resin 2") was similarly evaluated. The results are shown in Table 2. Also in this case, good results were obtained. Example 5 Similarly, a copolymer resin having a weight average molecular weight of 100,000 (80% L-lactic acid and 20 parts glycolic acid) (hereinafter abbreviated as “lactic acid-based resin 3”) was similarly evaluated. The results are shown in Table 2. Also in this case, good results were obtained. Example 6 Similarly, a copolymer resin (80% L-lactic acid and 20 parts 6-hydroxycaproic acid) having a weight average molecular weight of 100,000 (hereinafter abbreviated as "lactic acid-based resin 4") was similarly evaluated. The results are shown in Table 2. Also in this case, good results were obtained.
【0011】比較例1〜3 実施例1〜6で用いた乳酸系樹脂1〜4の代わりに、高
流動タイプのアクリル系樹脂(クラレ(株)製、パラペ
ットGF1000、以下「アクリル系樹脂1」と略称)を用い
て同様に評価した。結果を表3に示す。この場合、アク
リル系樹脂1の添加量が少なければ流動性の改善効果に
乏しく、また多くすると衝撃値や引張破断強度、引張破
断伸度、熱変形温度などに劣るため好ましくない。 比較例4〜6 実施例1〜6で用いた乳酸系樹脂1〜4の代わりに、高
流動タイプのスチレン- アクリル共重合樹脂(ダイセル
化学工業(株)製、セビアンMAS30 、以下「アクリル系
樹脂2」略称)を用いて同様に評価した。結果を表4に
示す。この場合、アクリル系樹脂2の添加量が少なけれ
ば真珠光沢の発現効果や流動性改善効果に乏しく、また
多くすると衝撃値や引張破断強度、引張破断伸度、熱変
形温度などに劣るため好ましくない。 比較例7 ポリカーボネート樹脂単体で同様の評価を行った結果で
ある。結果を表4に示す。Comparative Examples 1 to 3 Instead of the lactic acid resins 1 to 4 used in Examples 1 to 6, a high flow type acrylic resin (Kuraray Co., Ltd., Parapet GF1000, hereinafter referred to as "acrylic resin 1"). And abbreviated). The results are shown in Table 3. In this case, if the addition amount of the acrylic resin 1 is small, the effect of improving the fluidity is poor, and if the addition amount is large, the impact value, the tensile rupture strength, the tensile rupture elongation and the heat deformation temperature are inferior, which is not preferable. Comparative Examples 4 to 6 Instead of the lactic acid resins 1 to 4 used in Examples 1 to 6, a high flow type styrene-acrylic copolymer resin (manufactured by Daicel Chemical Industries Ltd., Sebian MAS30, hereinafter referred to as “acrylic resin”). 2) Abbreviation) was used for the same evaluation. The results are shown in Table 4. In this case, if the addition amount of the acrylic resin 2 is small, the pearlescent effect and the fluidity improving effect are poor, and if the addition amount is large, the impact value, the tensile rupture strength, the tensile rupture elongation, and the heat deformation temperature are inferior. . Comparative Example 7 This is the result of performing the same evaluation with the polycarbonate resin alone. The results are shown in Table 4.
【0012】以上の実施例、比較例の中で、各物性は以
下の要領で評価した。 (1)アイゾッド衝撃試験(衝撃値) JIS-K7110 に準拠した。 (2)引張試験(引張破断強度、破断伸度) JIS-K7113 に準拠した。 (3)曲げ試験(曲げ弾性率、曲げ降伏強度) JIS-K7113 に準拠した。 (4)熱変形温度 JIS-K7207 に準拠した。 (5)スパイラルフロー流動長 アルキメデス型スパイラル金型(流動厚さ1mm 、流動幅
10mm)を用い、樹脂温度280 ℃、金型温度100℃の条件
で流動長を測定した。また、流動長が同じ射出圧力での
芳香族ポリカーボネート樹脂単体の流動長の3倍以上と
なる場合を流動性改良効果が大、2〜3倍の場合を小、
2倍以下を改良不十分として格付けした。 (6)真珠光沢 目視により判定した。ここでは、明確な真珠光沢を示す
ものを真珠光沢ありとし、以下、不十分なもの、真珠光
沢を示さないものの3段階に格付けした。In the above Examples and Comparative Examples, the physical properties were evaluated as follows. (1) Izod impact test (impact value) Based on JIS-K7110. (2) Tensile test (tensile breaking strength, breaking elongation) Based on JIS-K7113. (3) Bending test (bending elastic modulus, bending yield strength) Based on JIS-K7113. (4) Heat distortion temperature Based on JIS-K7207. (5) Spiral flow flow length Archimedes type spiral mold (flow thickness 1 mm, flow width
The flow length was measured under the conditions of a resin temperature of 280 ° C and a mold temperature of 100 ° C. Further, when the flow length is 3 times or more of the flow length of the aromatic polycarbonate resin alone at the same injection pressure, the effect of improving the fluidity is large, and when the flow length is 2 to 3 times the small,
We rated less than 2 times as insufficient improvement. (6) Pearlescence It was visually determined. Here, those exhibiting clear pearl luster were regarded as having pearl luster, and hereinafter, those having insufficient pearlescence and those not exhibiting pearl luster were classified into three levels.
【0013】[0013]
【表1】 [Table 1]
【0014】[0014]
【表2】 [Table 2]
【0015】[0015]
【表3】 [Table 3]
【0016】[0016]
【表4】 [Table 4]
【0017】[0017]
【発明の効果】本発明の真珠光沢を有する樹脂組成物
は、高度の流動性およびバランスのよい熱的・機械的物
性を具備しながら真珠光沢の付与ができ、従来の真珠光
沢調樹脂のように用途が制限されず多方面への応用が可
能である。INDUSTRIAL APPLICABILITY The resin composition having a pearlescent luster of the present invention is capable of imparting a pearlescent luster while having a high degree of fluidity and well-balanced thermal / mechanical physical properties, and is similar to a conventional pearlescent resin. The application is not limited to, and can be applied to various fields.
Claims (1)
酸および/または乳酸類とその他のヒドロキシカルボン
酸との共重合体から成る樹脂組成物。1. A resin composition comprising an aromatic polycarbonate resin and a polylactic acid and / or a copolymer of lactic acid and other hydroxycarboxylic acid.
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