JPH01111756A - Marble-like thermoplastic resin composition - Google Patents
Marble-like thermoplastic resin compositionInfo
- Publication number
- JPH01111756A JPH01111756A JP26795787A JP26795787A JPH01111756A JP H01111756 A JPH01111756 A JP H01111756A JP 26795787 A JP26795787 A JP 26795787A JP 26795787 A JP26795787 A JP 26795787A JP H01111756 A JPH01111756 A JP H01111756A
- Authority
- JP
- Japan
- Prior art keywords
- marble
- resin composition
- filler
- thermoplastic resin
- acrylic 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.)
- Pending
Links
- 239000011342 resin composition Substances 0.000 title claims abstract description 14
- 229920005992 thermoplastic resin Polymers 0.000 title claims abstract description 9
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 17
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 17
- 239000011256 inorganic filler Substances 0.000 claims description 7
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 7
- 239000000945 filler Substances 0.000 abstract description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000003856 thermoforming Methods 0.000 abstract description 6
- 230000002087 whitening effect Effects 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract description 5
- 239000011347 resin Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 3
- 239000000377 silicon dioxide Substances 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 abstract description 2
- 239000000347 magnesium hydroxide Substances 0.000 abstract description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 abstract description 2
- 239000000049 pigment Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 235000010216 calcium carbonate Nutrition 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 235000012254 magnesium hydroxide Nutrition 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000000463 material Substances 0.000 description 15
- 238000005452 bending Methods 0.000 description 8
- 239000004579 marble Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000000155 melt Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 239000002928 artificial marble Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000002484 inorganic compounds Chemical class 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- JHPBZFOKBAGZBL-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylprop-2-enoate Chemical compound CC(C)C(O)C(C)(C)COC(=O)C(C)=C JHPBZFOKBAGZBL-UHFFFAOYSA-N 0.000 description 1
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 1
- 241000467686 Eschscholzia lobbii Species 0.000 description 1
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 description 1
- -1 acrylic ester Chemical class 0.000 description 1
- 229920006397 acrylic thermoplastic Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/06—Acrylates
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、人工大理石として例えば台所カウンターや
洗面化粧台の化粧天板等に用いられる大理石調の熱可塑
性樹脂組成物に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a marble-like thermoplastic resin composition used as artificial marble, for example, for kitchen counters, decorative top plates of bathroom vanities, and the like.
従来の技術
従来、この種の樹脂組成物として、最も一般的には、耐
候性及び外観の美しさ等の点で優れるアクリル系樹脂を
ベースとし、これに粉末状充填材として水酸化アルミニ
ウム、水酸化マグネシウム、炭酸カルシウム、シリカ等
の無機化合物粉末を均一に分散含有せしめたものがよく
知られている。Conventional technology Conventionally, this type of resin composition has most commonly been based on acrylic resin, which is excellent in terms of weather resistance and beautiful appearance, and in which aluminum hydroxide and water are added as powdered fillers. It is well known to contain powders of inorganic compounds such as magnesium oxide, calcium carbonate, and silica uniformly dispersed therein.
そして、上記のアクリル系樹脂としては、この種の樹脂
組成物が高い耐熱性を必要とする製品、例えば鍋やフラ
イパン等が高温のま〜載置されることの多い台所カウン
ター用天板等を主用途の一つとすることから、耐熱性を
具備させるために通常はメルトインデックス（ＭＦＲ。The above-mentioned acrylic resin is used for products that require high heat resistance, such as kitchen countertops where pots and frying pans are often placed on high-temperature surfaces. Since it is one of the main uses, melt index (MFR) is usually used to provide heat resistance.
２３０℃）が０．５〜０．７ｇ／１０分程度で、かつ重
量平均分子量（ＭＷ）が１７０．０００〜１８０，００
０程度のポリマーが使用されている。230℃) is about 0.5 to 0.7 g/10 minutes, and the weight average molecular weight (MW) is 170.000 to 180,00.
About 0 polymers are used.
発明が解決しようとする問題点
しかしながら、上記従来の大理石調の樹脂組成物では、
板材や棒材等の素材を熱成形にて曲げ加工すると白化や
クラックが発生するため、例えば台所カウンターの曲面
状エツジ等の曲面部を形成する場合は、上記樹脂組成物
からなる複数の素材を組み合わせて接着した後、機械加
工にて曲面仕上げを行う必要があった。従って、従来に
あっては、曲面部の形成に非常に手間がか＼ると共に、
材料ロスが多くなり、コスト高になるという問題点があ
った。Problems to be Solved by the Invention However, with the above-mentioned conventional marble-like resin composition,
When bending materials such as plates and bars by thermoforming, whitening and cracks occur, so when forming curved parts such as the curved edges of a kitchen counter, it is necessary to use multiple materials made of the above resin composition. After assembling and gluing, it was necessary to finish the curved surface by machining. Therefore, in the past, it took a lot of time and effort to form a curved surface, and
There was a problem that there was a lot of material loss and the cost was high.
この発明は、上記問題点を解決すべくなされたもので、
板材等の大理石調素材に熱成形による曲げ加工を施して
も白化やクラックを生じず、従って該曲げ加工によって
曲面部を容易に形成でき、しかも製品に充分な耐熱性を
付与し得る大理石調の熱可塑性樹脂組成物の提供を目的
としている。This invention was made to solve the above problems,
Even when marble-like materials such as plate materials are bent by thermoforming, they do not whiten or crack, and therefore curved parts can be easily formed by the bending process, and marble-like materials can be provided with sufficient heat resistance. The purpose is to provide thermoplastic resin compositions.
問題点を解決するための手段
この発明者らは、上記目的を達成するために鋭意研究を
重ねた結果、特定のグレードのアクリル系樹脂と粉末状
無機質充填材とを特定比率で配合した樹脂組成物とした
場合、板材等の素材に対して熱成形による曲げ加工を支
障なく行うことができ、かつ充分な耐熱性が得られ、ま
た天然大理石と近似した美麗な外観を付与し得ることを
見い出し、この発明を完成するに至った。Means for Solving the Problems In order to achieve the above object, the inventors have conducted extensive research and have developed a resin composition in which a specific grade of acrylic resin and a powdered inorganic filler are blended in a specific ratio. It was discovered that when made into a product, it is possible to bend materials such as plates without any problems by thermoforming, obtain sufficient heat resistance, and give a beautiful appearance similar to that of natural marble. , completed this invention.
即ち、この発明は、メルトインデックス（ＭＦＲ，２３
０℃）が１．０〜１．７ｇ／１０分で、かつ重量平均分
子Ｗ（ＭＷ）が１２０，０００〜１５０．０００である
アクリル系樹脂１００重量部に対し、粉末状無機質充填
材１００〜３００重量部が均一に分散含有されてなる、
大理石調の熱可塑性樹脂組成物を要旨としている。That is, this invention has a melt index (MFR, 23
0°C) is 1.0 to 1.7 g/10 min and the weight average molecular W (MW) is 120,000 to 150.000. 300 parts by weight are uniformly dispersed.
The gist is a marble-like thermoplastic resin composition.
この発明の樹脂組成物に使用するアクリル系樹脂として
は、単量体組成が種々異なる熱可塑性アクリル系樹脂お
よび熱可塑性メタクリル系樹脂を使用できるが、特にメ
チルメタクリレートの単独重合体、もしくはメチルメタ
クリレートが単量体全体の７０重量％以上でこれに他の
メタクリル酸エステル、アクリル酸エステル、その他メ
チルメタクリレートと共重合可能なビニル系単量体の少
なくとも１種を共重合せしめてなる共重合体が好適であ
る。As the acrylic resin used in the resin composition of the present invention, thermoplastic acrylic resins and thermoplastic methacrylic resins having various monomer compositions can be used, but in particular, a homopolymer of methyl methacrylate or a methyl methacrylate is used. Preferable is a copolymer in which at least 70% by weight of the total monomer is copolymerized with at least one other methacrylic ester, acrylic ester, or other vinyl monomer copolymerizable with methyl methacrylate. It is.
しかして、このようなアクリル系樹脂は、前記の如く、
メルトインデックス（ＭＦＲ，２３０℃）が１．０〜１
．７ｇ／１０分で、かつ重量平均分子量（８ｗ）が１２
０．０００〜１５ｏ、ｏｏｏである必要がある。即ち、
上記メルトインデックスが１． ０ｇ／１０分より小さ
いもの、ならびに重量平均分子ｍ （向ｂ）が１５ｏ、
ｏｏｏを超えるものを用いると、台所カウンターのエツ
ジのような曲げ半径Ｒ（ａ＋）が２ＯＲや４０Ｒといっ
た曲面部を熱成形による曲げ加工で形成することが極め
て困離になる。また逆に、メルトインデックスが１．
７ＳＦ／１０分より大きいもの、ならびに重量平均分子
量（８Ｗ）が１２０，０００未満のものを用いると、上
記曲げ加工は可能であるが、耐熱性が著しく低下し、成
形品の上に高温の鍋やフライパン等を載せたり着火して
いる煙草を誤って落としたような際に表面が損われる。However, such acrylic resin, as mentioned above,
Melt index (MFR, 230℃) is 1.0-1
．． 7g/10min, and the weight average molecular weight (8w) is 12
It needs to be 0.000 to 15o, ooo. That is,
The above melt index is 1. Those smaller than 0g/10min, and weight average molecular m (direction b) of 15o,
If a material exceeding ooo is used, it becomes extremely difficult to form a curved surface part such as the edge of a kitchen counter with a bending radius R(a+) of 2OR or 40R by bending by thermoforming. Conversely, the melt index is 1.
If a material larger than 7SF/10 minutes or a material with a weight average molecular weight (8W) of less than 120,000 is used, the above bending process is possible, but the heat resistance will be significantly reduced, and a hot pot may be placed on top of the molded product. The surface may be damaged if you place something on it, such as a frying pan, or accidentally drop a lit cigarette on it.
一方、上記のアクリル系樹脂中に均一に分散含存させる
無機質充填材としては、水酸化アルミニウム、水酸化マ
グネシウム、炭酸カルシウム、シリカ等の無機化合物の
粉末が挙げられ、これらは目的とする成形品の外観や性
状に応じて２Ｆ］ｊ以上を適宜組み合わせ使用可能であ
る。On the other hand, examples of the inorganic filler to be uniformly dispersed and contained in the acrylic resin include powders of inorganic compounds such as aluminum hydroxide, magnesium hydroxide, calcium carbonate, and silica, which are used to form the desired molded product. It is possible to use a suitable combination of 2F]j or more depending on the appearance and properties of the material.
なお、特に水酸化アルミニウムは屈折率がアクリル系樹
脂に近似しているため、透明性と隠蔽性とを兼ね備えた
深みのある外観を与える点で好適に使用できる。In particular, since aluminum hydroxide has a refractive index similar to that of acrylic resin, it can be suitably used in terms of providing a deep appearance with both transparency and concealment properties.
このような充填材の配合量は、前記の如く、アクリル系
樹脂１００重量部に対して１００〜３００ｆｆ１ｍ部と
する必要がある。即ち、この配合量が１００重量部未満
では、隠蔽性が不充分で、製品の透明感が強すぎるもの
となって天然大理石のような重量感を表出できなくなる
と共に耐熱性も不充分になる。また逆に、上記配合量が
３００重量部を越えると、熱成形による曲げ加工におい
て白化やクラックを生じやすくなると共に、製品の透明
感が不足して深みのある外観を得ることができない。し
かして、曲げ加工性および大理石調の美麗な外観を得る
点から、特に上記配合量を１５０〜２５０重量部程度と
することが好適である。As mentioned above, the blending amount of such a filler needs to be 100 to 300ff1m parts per 100 parts by weight of the acrylic resin. That is, if the blending amount is less than 100 parts by weight, the hiding power will be insufficient and the product will be too transparent, unable to express the heavy feeling like natural marble, and the heat resistance will also be insufficient. . On the other hand, if the blending amount exceeds 300 parts by weight, whitening and cracking are likely to occur during bending by thermoforming, and the product lacks transparency, making it impossible to obtain a deep appearance. Therefore, from the viewpoint of bending workability and obtaining a beautiful marble-like appearance, it is particularly preferable that the above-mentioned amount is about 150 to 250 parts by weight.
なお、この発明においては、上記充填材と共に必要に応
じて例えば金属色フレークや顔料等の他の各種添加剤を
アクリル系樹脂中に含有させてもよい。In addition, in this invention, various other additives, such as metallic flakes and pigments, may be contained in the acrylic resin, if necessary, in addition to the filler described above.
この発明に係る大理石調の熱可塑性樹脂組成物による成
形品の製造は、従来品と同様に、上記各材料を前記で規
定した配合量範囲において均一に混合し、１８０〜２０
０℃程度の加熱下で１０〜１００Ｋｇ／−程度の圧力で
プレス成形することにより、板状その他の所望の形状と
することによって最も好適に行い得る。The production of molded products using the marble-like thermoplastic resin composition according to the present invention involves uniformly mixing the above-mentioned materials within the range of blending amounts specified above, in the same way as with conventional products, and
This can be most suitably carried out by press molding under heating at about 0° C. and a pressure of about 10 to 100 kg/- to form a plate or other desired shape.
発明の効果
この発明による熱可塑性樹脂組成物は、前述の如く、メ
ルトインデックスおよび重量平均分子Ｑ （ＭＷ）が特
定範囲にあるアクリル系樹脂に特定量の粉末無機質充填
材を均一に分散含有させたものであるため、白化やクラ
ックを生じることなく熟成形による曲げ加工が可能であ
り、曲面部を該曲げ加工によって容易に形成でき、しか
も充分な耐熱性を具備し、また天然大理石に近似した良
好な外観を有する人工大理石を提供することができる。Effects of the Invention As described above, the thermoplastic resin composition according to the present invention contains a specific amount of powdered inorganic filler uniformly dispersed in an acrylic resin whose melt index and weight average molecular weight Q (MW) are within a specific range. Because it is made of marble, it can be bent in an aged form without whitening or cracking, and curved parts can be easily formed by this bending process.It also has sufficient heat resistance, and has a good finish similar to natural marble. It is possible to provide artificial marble with a unique appearance.
実施例 配合材料として次のものを用いた。Example The following materials were used as compounding materials.
アクリル系樹脂：
種類 メルトインデックス 重量平均分子量（ＭＦＲ，
２３０℃） （Ｑ ｗ ）Ａ・・・ ０．６ｇ／
１０分 １７０，０００Ｂ・・・ １．０ｇ／１０分
１５０，０００Ｃ・・・ １．５ｇ／１０分 １２０，
０００Ｄ・・ ２９／１０分 １００，０００無機
質充填材：
水酸化アルミニウム粉末（商品名「ハイシライト Ｈ２
１０」昭和電工株式会社製、平均粒子径２５μｍ）
上記の配合材料を第１表に示す配合割合とし、かつ若干
量の潤滑剤（ジオクチルフタレート）を加えてヘンシェ
ルミキサーに投入し、３０分間混合した。そして、得ら
れた混合物を４００ｍｌ１Ｘ ４００ｍｍ×１２ｍｔｒ
ｒのプレス成形用平型内に充填し、この平型を多段式プ
レス機の熱盤間に挿入し、圧力１０Ｋｇ／ｃｉで上下か
ら加圧しながら徐々に温度を上げ、１８０℃において４
０分間加熱したのち、さらに圧力１００Ｋｇ／ｃＩｉで
加圧を継続しながら冷却した。そして、得られた各種試
料につき、外観、耐熱油性、曲面加工性について評価し
たところ、第１表に記載のとおりであった。なお、各項
目の評価は次のとおりである。Acrylic resin: Type Melt index Weight average molecular weight (MFR,
230℃) (Q w ) A... 0.6g/
10 minutes 170,000B... 1.0g/10 minutes
150,000C... 1.5g/10 minutes 120,
000D... 29/10 minutes 100,000 Inorganic filler: Aluminum hydroxide powder (product name "Hisilite H2"
10" manufactured by Showa Denko Co., Ltd., average particle size 25 μm) The above compounded materials were mixed in the proportions shown in Table 1, and a small amount of lubricant (dioctyl phthalate) was added, and the mixture was placed in a Henschel mixer and mixed for 30 minutes. . Then, transfer the obtained mixture to 400ml1X 400mm×12mtr
The flat mold for press molding of R was filled, and this flat mold was inserted between the hot discs of a multi-stage press machine, and the temperature was gradually raised while applying pressure from above and below at a pressure of 10 kg/ci, and the temperature was increased to 4.
After heating for 0 minutes, the mixture was further cooled while continuing to be pressurized at a pressure of 100 Kg/cIi. The various samples obtained were evaluated for appearance, heat oil resistance, and curved surface workability, and the results were as shown in Table 1. The evaluation of each item is as follows.
外観：肉眼検査による
Ｏ・・・天然大理石に近似した適度の透明感を有するも
の
×・・・適度の透明感を有さないもの
耐熱油性： Ｊ Ｉ ５Ｋ６９０２に基づく測定（温度
２００℃）
Ｏ・・・表面に溶融、フクレ等が生じないもの×・・・
表面に溶融、フクレ等を生じるもの熱加工性：温度１７
０℃のオーブン中で試料を２０〜３０分間放置し、試料
の表面
温度を１４０〜１５０℃に調整した
後、成形型による型押してＲ−４０
Ｍの曲面に成形したちの一１成形部
分の肉視検査。Appearance: O by visual inspection: Approximately transparent, similar to natural marble ×: Appropriately transparent. Heat oil resistance: Measured based on J I 5K6902 (temperature 200°C) O.・・Things that do not cause melting, blistering, etc. on the surface×・・
Items that cause melting, blistering, etc. on the surface Heat processability: Temperature 17
After leaving the sample in an oven at 0℃ for 20 to 30 minutes and adjusting the surface temperature of the sample to 140 to 150℃, the sample was pressed with a mold to form an R-40M curved surface. Visual inspection.
Ｏ・・・白化、割れを生じないもの
×・・・白化、割れを生じるもの
上表の結果から、アクリル系樹脂のメルトインデックス
および重量平均分子ｍ （ＭＷ）と無機質充填材の配合
量がこの発明の規定範囲にある実施例１〜５の成形品は
、外観、耐熱油性、熱加工性のいずれにも優れることが
明らかである。これに対し、上記メルトインデックスが
小さすぎてかつ重量平均分子ｍ （ＭＷ）が大きすぎる
アクリル系樹脂Ａを使用した比較例１の成形品は熱加工
性、無機質充填材の配合量が少なすぎる比較例２，３の
成形品は外観および耐熱油性、同配合量が多すぎる比較
例４の成形品は外観および熱加工性、メルトインデック
スが大きすぎてかつ重量平均分子量（ΩＷ）が小さすぎ
るアクリル系樹脂りを使用した比較例５の成形品は耐熱
油性、にそれぞれ劣ることが判る。O...No whitening or cracking x...Whitening or cracking From the results in the table above, the melt index and weight average molecule m (MW) of the acrylic resin and the amount of inorganic filler blended are as follows. It is clear that the molded products of Examples 1 to 5 within the specified range of the invention are excellent in appearance, heat oil resistance, and heat processability. On the other hand, the molded product of Comparative Example 1 using acrylic resin A whose melt index is too small and whose weight average molecule m (MW) is too large has poor thermal processability and the amount of inorganic filler blended is too small. The molded products of Examples 2 and 3 have an appearance and heat oil resistance, while the molded product of Comparative Example 4, which contains too much of the same, has an appearance and heat processability, and the melt index is too high and the weight average molecular weight (ΩW) is too low. It can be seen that the molded product of Comparative Example 5 using resin resin is inferior in heat oil resistance.
以上that's all
Claims (1)
．７ｇ／１０分で、かつ重量平均分子量（＠Ｍ＠ｗ）が
１２０，０００〜１５０，０００であるアクリル系樹脂
１００重量部に対し、粉末状無機質充填材１００〜３０
０重量部が均一に分散含有されてなる、大理石調の熱可
塑性樹脂組成物。Melt index (MFR, 230℃) is 1.0-1
．． 7 g/10 minutes, and 100 parts by weight of an acrylic resin having a weight average molecular weight (@M@w) of 120,000 to 150,000, 100 to 30 parts by weight of a powdered inorganic filler.
A marble-like thermoplastic resin composition containing 0 parts by weight uniformly dispersed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26795787A JPH01111756A (en) | 1987-10-22 | 1987-10-22 | Marble-like thermoplastic resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26795787A JPH01111756A (en) | 1987-10-22 | 1987-10-22 | Marble-like thermoplastic resin composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01111756A true JPH01111756A (en) | 1989-04-28 |
Family
ID=17451946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26795787A Pending JPH01111756A (en) | 1987-10-22 | 1987-10-22 | Marble-like thermoplastic resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01111756A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0757704A4 (en) * | 1995-02-23 | 1997-11-19 | Aristech Chemical Corp | Acrylic sheet having uniform distribution of coloring and mineral filler before and after thermoforming |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52117987A (en) * | 1976-03-31 | 1977-10-03 | Asahi Chem Ind Co Ltd | Production of methyl methacrylate polymer |
| JPS53104621A (en) * | 1977-02-23 | 1978-09-12 | Nippon Musical Instruments Mfg | Synthetic marble |
| JPS55126564A (en) * | 1979-03-19 | 1980-09-30 | Okamura Corp | Imitation marble |
| JPS569261A (en) * | 1979-07-04 | 1981-01-30 | Nippon Musical Instruments Mfg | Marble pattern matter |
| JPS57153008A (en) * | 1981-03-19 | 1982-09-21 | Asahi Chem Ind Co Ltd | Methacrylic resin having excellent heat resistance |
| JPS58183714A (en) * | 1982-04-21 | 1983-10-27 | Asahi Chem Ind Co Ltd | Methacryl resin having improved heat resistance |
| JPS60117203A (en) * | 1983-11-30 | 1985-06-24 | Asahi Chem Ind Co Ltd | High-performance optical fiber |
-
1987
- 1987-10-22 JP JP26795787A patent/JPH01111756A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52117987A (en) * | 1976-03-31 | 1977-10-03 | Asahi Chem Ind Co Ltd | Production of methyl methacrylate polymer |
| JPS53104621A (en) * | 1977-02-23 | 1978-09-12 | Nippon Musical Instruments Mfg | Synthetic marble |
| JPS55126564A (en) * | 1979-03-19 | 1980-09-30 | Okamura Corp | Imitation marble |
| JPS569261A (en) * | 1979-07-04 | 1981-01-30 | Nippon Musical Instruments Mfg | Marble pattern matter |
| JPS57153008A (en) * | 1981-03-19 | 1982-09-21 | Asahi Chem Ind Co Ltd | Methacrylic resin having excellent heat resistance |
| JPS58183714A (en) * | 1982-04-21 | 1983-10-27 | Asahi Chem Ind Co Ltd | Methacryl resin having improved heat resistance |
| JPS60117203A (en) * | 1983-11-30 | 1985-06-24 | Asahi Chem Ind Co Ltd | High-performance optical fiber |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0757704A4 (en) * | 1995-02-23 | 1997-11-19 | Aristech Chemical Corp | Acrylic sheet having uniform distribution of coloring and mineral filler before and after thermoforming |
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