JP2000109642A - Woodgrain resin molded product - Google Patents

Woodgrain resin molded product

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Publication number
JP2000109642A
JP2000109642A JP10281554A JP28155498A JP2000109642A JP 2000109642 A JP2000109642 A JP 2000109642A JP 10281554 A JP10281554 A JP 10281554A JP 28155498 A JP28155498 A JP 28155498A JP 2000109642 A JP2000109642 A JP 2000109642A
Authority
JP
Japan
Prior art keywords
resin
weight
molded product
woodgrain
acrylonitrile
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
Application number
JP10281554A
Other languages
Japanese (ja)
Other versions
JP3695958B2 (en
Inventor
Ryuichi Sugimoto
隆一 杉本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Chemicals Inc
Original Assignee
Mitsui Chemicals Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Chemicals Inc filed Critical Mitsui Chemicals Inc
Priority to JP28155498A priority Critical patent/JP3695958B2/en
Publication of JP2000109642A publication Critical patent/JP2000109642A/en
Application granted granted Critical
Publication of JP3695958B2 publication Critical patent/JP3695958B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide woodgrain resin molded products which simply enable the control of color in ligneous ABS resin molded products and, in addition, are excellent in the ligneous feeling while controlling the stability of the properties, particularly the lowering in impact strength and the change in hue. SOLUTION: Woodgrain resin molded products are obtained by mixing 100 pts.wt. resin composition comprising 1-60 wt.% cellulose powder having a whiteness degree of not less than 80% and 40-99 wt.% acrylonitrile/butadiene/styrene copolymer resin (hereinafter referred to as 'ABS resin') with 0.1-10 pts.wt. resin composition comprising 3-20 wt.% colorant and 80-97 wt.% styrenic resin having a ratio of the melt viscosity at a shear rate of 103 sec-1 at 200 deg.C of not more than 0.4 or not less than 2.5 relative to that of said ABS resin, and 0.01-1.0 pt.wt. blowing agent and molding the resulting mixture, and has a specific gravity of 0.5-1.0.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、木目調樹脂成形物
に関し、詳しくは色相の安定した木質感に優れた木目調
樹脂成形物に関すものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood-grained resin molded product, and more particularly to a wood-grained resin molded product having a stable hue and excellent woody appearance.

【0002】[0002]

【従来の技術】従来からアクリロニトリル−ブタジエン
−スチレン共重合体樹脂(以下、ABS樹脂と記す。)
は優れた物性を有する樹脂として知られ、成形加工材料
として用いられている。例えば、自動車部品、家庭用電
気部品、事務機器部品、機械部品などに利用されてい
る。一方、最近では自動車用内装材や住宅の内装材とし
て、例えば窓枠、扉枠、床、天井、階段手すりなどに天
然の木材に近い質感を有する木目調の材料を使用するケ
ースが増えてきている。また建材分野では住宅などの外
装材についても高級感のある天然木材と同じ木目調の材
料からなる製品を使用した暖かみのある住宅の要望が増
えてきている。
2. Description of the Related Art Conventionally, acrylonitrile-butadiene-styrene copolymer resin (hereinafter referred to as ABS resin).
Is known as a resin having excellent physical properties and is used as a molding material. For example, it is used for automobile parts, household electric parts, office equipment parts, mechanical parts, and the like. On the other hand, recently, as the interior materials for automobiles and the interior of houses, for example, woodgrain-like materials having a texture close to that of natural wood have been used for window frames, door frames, floors, ceilings, stair railings, and the like. I have. In the field of building materials, there is an increasing demand for exterior materials for houses and the like using warm wood-like products made of the same wood-grained material as natural wood with high quality.

【0003】従来、この要望に答えるためにはABS樹
脂そのものでは木質感が得られないため木粉や紙などの
セルロース系の添加剤を加えた組成物を用いた検討が行
われている。例えばABS樹脂を用いて木質感を得るた
めに、木粉を含有して発泡させた硬質の樹脂組成物が製
造されている。しかしながらABS樹脂に一般の木粉を
添加すると、木粉より発生する木酸などのためにABS
樹脂の劣化が進行する問題があり、衝撃強度が低下する
だけでなく、特に色調の低下が激しく木粉を添加したA
BS樹脂組成物は茶色になり易く、天然物の木粉の色が
一定しない事もあり、製品の色管理が難しいという問題
があった。また、木粉に含まれるリグニン等の不純物が
黄色味を有しているため、着色に要する顔料が多量に必
要になることや、発泡成形をする際には、このリグニン
が発泡を阻害する傾向があった。これらの問題を解決す
る手段として、特公平8−30382号公報には、白色
無機顔料をボールミルを用いて木質粉末の表面に担持す
る方法により木酸の放出を抑制する方法が開示されてい
る。しかし、この方法では、白色顔料の木粉への担持が
必要で、その工程が増加し、しかも処理効率が低く、経
済的には不向きで木酸を本質的に抑制することができな
かった。
[0003] Conventionally, in order to meet this demand, since a feeling of wood cannot be obtained with the ABS resin itself, studies using a composition to which a cellulosic additive such as wood flour or paper is added have been conducted. For example, in order to obtain a woody feeling using an ABS resin, a hard resin composition containing wood powder and foamed has been manufactured. However, when general wood flour is added to the ABS resin, the acid is generated from the wood flour due to the acid generated from the wood flour.
There is a problem that the deterioration of the resin progresses, and not only the impact strength is lowered but also the color tone is significantly reduced, and
The BS resin composition tends to turn brown, and the color of wood powder of natural products may not be constant, and there is a problem that color management of the product is difficult. In addition, since impurities such as lignin contained in wood flour have a yellow tint, a large amount of pigment required for coloring is required, and when performing foam molding, this lignin tends to inhibit foaming. was there. As a means for solving these problems, Japanese Patent Publication No. 8-30382 discloses a method of suppressing the release of wood acid by supporting a white inorganic pigment on the surface of woody powder using a ball mill. However, in this method, the white pigment must be supported on wood powder, the number of steps is increased, the processing efficiency is low, and it is economically unsuitable, so that wood acid cannot be essentially suppressed.

【0004】[0004]

【発明が解決しようとする課題】本発明は、上記の従来
の方法での問題点を解決し、色管理を簡単にし、物性の
安定性と色相の変化を少なくし、木質感に優れた木目調
樹脂成形物を提供することを課題とするものである。
SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the conventional method, simplifies color management, reduces the change in hue and stability of physical properties, and provides a wood grain with an excellent wood texture. It is an object of the present invention to provide a conditioned resin molded product.

【0005】[0005]

【課題を解決するための手段】本発明者らは、かかる問
題を解決するため鋭意研究を行った結果、本発明に到達
した。すなわち本発明は、(1)白度80%以上のセル
ロース粉末1〜60重量%とアクリロニトリル−ブタジ
エン−スチレン共重合体樹脂(以下、ABS樹脂)40
〜99重量%からなる樹脂組成物100重量部に対し
て、(2)着色剤3〜20重量%と、該ABS樹脂に対
して、200℃における剪断速度103 sec-1下での
溶融粘度の比が0.4以下または2.5以上であるスチ
レン系樹脂80〜97重量%からなる樹脂組成物0.1
〜10重量部と(3)発泡剤0.01〜1重量部を混合
成形して得られる比重が0.5〜1.0である木目調樹
脂成形物である。
Means for Solving the Problems The inventors of the present invention have made intensive studies to solve such a problem, and as a result, have reached the present invention. That is, the present invention provides (1) 1 to 60% by weight of a cellulose powder having a whiteness of 80% or more and an acrylonitrile-butadiene-styrene copolymer resin (hereinafter referred to as ABS resin) 40
(2) 3 to 20% by weight of a colorant based on 100 parts by weight of a resin composition consisting of 100 to 99% by weight, and a melt viscosity at 200 ° C under a shear rate of 10 3 sec -1 with respect to the ABS resin. Resin composition consisting of 80 to 97% by weight of a styrene resin having a ratio of 0.4 or less or 2.5 or more
A woodgrain-like resin molded product having a specific gravity of 0.5 to 1.0 obtained by mixing and molding 10 to 10 parts by weight and (3) 0.01 to 1 part by weight of a foaming agent.

【0006】[0006]

【発明の実施の形態】本発明における白度80%以上の
セルロース粉末とは、木、パルプ及び紙を酸及びアルカ
リで処理をすることにより、木酸、リグニン等の不純物
を取り除いた白度80%以上のセルロース粉末であり、
ここでの酸又はアルカリ処理は、例えば、木、パルプ及
び紙を適度な大きさのチップに粉砕・選別して、そのチ
ップを塩酸或いは硫酸での酸加水分解し、濾過・水洗・
脱水・乾燥、さらに粉砕・選別して木酸、リグニン等の
不純物を取り除く方法、或いは石灰石と硫黄から調製さ
れた亜硫酸と重亜硫酸カルシウムの混合液で100〜1
15℃での加熱蒸解、水洗、離解、スクリーニング、塩
素−アルカリ−塩素−アルカリ−次亜塩素酸漂白−亜硫
酸水或いは塩素酸処理のような一連の精製漂白、脱水・
乾燥・選別して得る酸性重亜硫酸カルシウム法。その他
に水酸化ナトリウムと硫酸ナトリウムが主成分である硫
酸塩での加熱蒸解、洗浄、スクリーニング、二酸化炭素
漂白、次亜塩素酸漂白、スクリーニング、徐塵工程、亜
硫酸水溶液処理をしたのち脱水・乾燥・選別して得る硫
酸塩法や硝酸とアルカリ処理からなる硝酸法、ヒドロト
ロピ塩溶液を用いたヒドロトロピ法が挙げられる。
BEST MODE FOR CARRYING OUT THE INVENTION The cellulose powder having a whiteness of 80% or more in the present invention refers to a whiteness of 80% by removing impurities such as wood acid and lignin by treating wood, pulp and paper with an acid and an alkali. % Or more of cellulose powder,
The acid or alkali treatment here involves, for example, crushing and sorting wood, pulp and paper into chips of a suitable size, acid-hydrolyzing the chips with hydrochloric acid or sulfuric acid, filtering, washing with water,
A method of removing impurities such as wood acid and lignin by dehydration and drying, and further pulverization and screening, or 100 to 1 with a mixed solution of sulfurous acid and calcium bisulfite prepared from limestone and sulfur.
A series of purification bleaching, such as heat cooking at 15 ° C., washing with water, defibration, screening, chlorine-alkali-chlorine-alkali-hypochlorite bleach-sulfuric acid or chloric acid treatment, dehydration
An acid calcium bisulfite method obtained by drying and sorting. In addition, heat digestion with sodium sulfate and sodium sulfate as main components, washing, screening, carbon dioxide bleaching, hypochlorous acid bleaching, screening, dust reduction process, sulfurous acid aqueous solution treatment, then dehydration / drying / A sulfate method obtained by sorting, a nitric acid method comprising nitric acid and alkali treatment, and a hydrotropy method using a hydrotrope salt solution are exemplified.

【0007】また、これら木酸、リグニン等の不純物を
取り除いたセルロース粉末は、市場で容易に入手可能で
あり、例えば、日本製紙(株)社製の100メッシュパ
スの粒度を持つKCフロックW100(10N塩酸処
理)、あるいは200メッシュパスの粒度を持つKCフ
ロックW200(10N硫酸処理)などが挙げられる。
特に、このセルロース粉末では、白色の微粉末であるた
め、顔料などによる調色は自由にできる。
[0007] Cellulose powder from which impurities such as wood acid and lignin have been removed is readily available on the market. For example, KC Floc W100 (manufactured by Nippon Paper Industries Co., Ltd., having a particle size of 100 mesh pass) can be used. 10C hydrochloric acid treatment) or KC Floc W200 (10N sulfuric acid treatment) having a particle size of 200 mesh pass.
In particular, since the cellulose powder is a white fine powder, the color can be freely adjusted with a pigment or the like.

【0008】本発明のセルロース粉末のABSへの添加
量比は、セルロース粉末1〜60重量%に対してABS
樹脂40〜99重量%である。セルロース粉末の添加量
が1重量%未満であると、成形物の木質感が得られず、
60重量%超過であると、樹脂組成物の加工性が低下
し、成形が困難になる。
The ratio of the amount of the cellulose powder of the present invention added to the ABS is 1 to 60% by weight of the cellulose powder to the weight of the ABS.
Resin is 40 to 99% by weight. If the amount of the cellulose powder is less than 1% by weight, a woody texture of the molded product cannot be obtained,
If the content is more than 60% by weight, the processability of the resin composition decreases, and molding becomes difficult.

【0009】本発明でいうABS樹脂は、ゴム状重合体
とスチレン系単量体、不飽和ニトリル系単量体及び、必
要であれば他の単量体の共重合体からなる樹脂である。
ここでスチレン系単量体としては、スチレン、α−アル
キルモノビニリデン芳香族単量体(例えばα−メチルス
チレン;α−エチレンスチレン;α−メチルビニルトル
エン;αメチルジアルキルスチレン;等)、環置換アル
キルスチレン(例えばo−m−及びp−ビニルトルエ
ン;o−エチルスチレン;p−エチルスチレン;2,4
−ジメルスチレン;p−第三級ブチルスチレン;等)、
環置換ハロスチレン(例えばo−クロロスチレン;p−
クロロスチレン;o−プロモスチレン;2,4−ジクロ
スチレン;等)環−アルキル、環ハロ−置換スチレン
(例えば2−クロロ−4−メチルスチレン;2,6−ジ
クロロスチレン;等)ビニルナフタレン、ビニルアント
ラセンの一種または混合物が用いられる。
The ABS resin referred to in the present invention is a resin composed of a copolymer of a rubbery polymer, a styrene monomer, an unsaturated nitrile monomer and, if necessary, another monomer.
Here, styrene-based monomers include styrene, α-alkylmonovinylidene aromatic monomers (for example, α-methylstyrene; α-ethylenestyrene; α-methylvinyltoluene; αmethyldialkylstyrene; etc.), ring substitution Alkylstyrenes (e.g., om- and p-vinyltoluene; o-ethylstyrene; p-ethylstyrene; 2,4
-Dimer styrene; p-tertiary butyl styrene; etc.),
Ring-substituted halostyrenes (eg, o-chlorostyrene; p-
Chlorostyrene; o-bromostyrene; 2,4-dichlorostyrene; etc.) ring-alkyl, ring-halo-substituted styrene (eg, 2-chloro-4-methylstyrene; 2,6-dichlorostyrene; etc.) vinylnaphthalene, vinyl One or a mixture of anthracene is used.

【0010】上記の置換アルキル基は1〜4個の炭素原
子を有し、そしてイソプロピル及びイソブチル基を含
む。このうちモノビニリデン芳香族単量体の一種もしく
は混合物が好ましく用いられる。また、不飽和ニトリル
系単量体としては、アクリロニトリル、メタクリロニト
リル、エタクリロニトリル、フマロニトリル及びこれら
の混合物等が挙げられる。
The above substituted alkyl groups have from 1 to 4 carbon atoms and include isopropyl and isobutyl groups. Among them, one or a mixture of monovinylidene aromatic monomers is preferably used. Examples of the unsaturated nitrile monomer include acrylonitrile, methacrylonitrile, ethacrylonitrile, fumaronitrile, and mixtures thereof.

【0011】また、ゴム状重合体は共役1,3−ジエン
(例えばブタジエン;イソプレン;等)等のポリブタジ
エン類やスチレン−ブタジエン共重合体またはEPDM
(エチレン−プロピレン−ジエンメチレンリンケージ)
等又はこれらの混合物が挙げられる。
The rubbery polymer may be a polybutadiene such as conjugated 1,3-diene (for example, butadiene; isoprene; etc.), a styrene-butadiene copolymer, or EPDM.
(Ethylene-propylene-diene methylene linkage)
Or a mixture thereof.

【0012】本発明でいう他の単量体とは、スチレン、
アクリロニトリルと共重合可能な単量体であれば特に限
定しないが、メチルメタクリレート等のアクリレート類
や、N−フェニルマレイミド、シクロヘキシルマレイミ
ド等のマレイミド類が挙げられる。
The other monomers referred to in the present invention include styrene,
The monomer is not particularly limited as long as it is a monomer copolymerizable with acrylonitrile, and examples thereof include acrylates such as methyl methacrylate and maleimides such as N-phenylmaleimide and cyclohexylmaleimide.

【0013】本発明のABS樹脂からメチルエチルケト
ンとメタノール7:3の混合液に不溶解な成分を除いた
重合体成分(A)中のアクリロニトリル成分が10〜3
0重量%であり、かつ重合体成分(A)の還元粘度(η
sp/c)が0.4〜0.9dl/gであり、好ましく
は0.4〜0.80dl/g、さらに好ましくは0.4
5〜0.75dl/gである。還元粘度が0.4dl/
gより小さいと衝撃強度が著しく低下するので好ましく
なく、また0.9dl/gを越えると流動性が低下し、
成形可能な温度が高くなり、そのために色相の悪化が起
こるため好ましくない。ここで還元粘度とは海相成分
(S)の0.25gを精秤し、ジメチルホルムアミド5
0mlに2時間かけて溶解させた溶液を、溶媒の流下時
間が20〜100秒のウベローデ粘度計を用いて30℃
の環境で測定して得られる値で、還元粘度は溶媒の流下
秒数(t0 )と溶液の流下秒数(t)から次式(化1)
によって求める。
The acrylonitrile component in the polymer component (A) obtained by removing the insoluble component in the mixture of methyl ethyl ketone and methanol 7: 3 from the ABS resin of the present invention is 10-3.
0% by weight and the reduced viscosity (η) of the polymer component (A).
sp / c) is 0.4 to 0.9 dl / g, preferably 0.4 to 0.80 dl / g, and more preferably 0.4 to 0.9 dl / g.
5 to 0.75 dl / g. Reduced viscosity 0.4 dl /
If it is less than 0.9 g, the impact strength is remarkably reduced, so that it is not preferable. If it exceeds 0.9 dl / g, the fluidity decreases,
The temperature at which molding can be performed is increased, and the hue is deteriorated, which is not preferable. Here, the reduced viscosity means that 0.25 g of the sea phase component (S) is precisely weighed, and dimethylformamide 5
The solution dissolved in 0 ml over 2 hours was heated to 30 ° C. using a Ubbelohde viscometer having a solvent flow time of 20 to 100 seconds.
With a value obtained by measuring in the environment, reduced viscosity falling seconds of the solvent (t 0) by the following equation from falling seconds of the solution (t) (of 1)
Ask by.

【0014】[0014]

【化1】還元粘度(ηsp/c)={(t/t0 )ー
1}/0.5 本発明におけるABS樹脂のゴム状重合体成分の平均粒
径は0.4〜4μmであり、0.4μm以上のゴム粒子
の50%以上が0.1μm以上の細胞径を含むサラミ状
の構造であり、細胞径の面積がゴム粒子全体の面積の5
0%以上を占めている粒子として分散相を10〜35重
量%の割合で形成していることが特徴である。ゴム重合
体成分の粒子の大きさがこの範囲より大きくても小さく
ても成型物の衝撃強度が低下するので好ましくない。す
なわちゴム状重合体の粒径が0.4μmよりも小さいと
衝撃強度の向上が少なく、ゴム状重合体の粒径が4μm
よりも大きくても衝撃強度が低下するだけでなく、成型
品の表面が荒れるので好ましくない。
Embedded image The reduced viscosity (ηsp / c) = {(t / t 0 ) −1} /0.5 The rubber-like polymer component of the ABS resin in the present invention has an average particle size of 0.4 to 4 μm, 50% or more of the rubber particles of 0.4 μm or more have a salami-like structure including a cell diameter of 0.1 μm or more, and the area of the cell diameter is 5% of the area of the entire rubber particles.
It is characterized in that the dispersed phase is formed at a ratio of 10 to 35% by weight as particles occupying 0% or more. If the particle size of the rubber polymer component is larger or smaller than this range, the impact strength of the molded product is undesirably reduced. That is, when the particle size of the rubber-like polymer is smaller than 0.4 μm, the improvement in impact strength is small, and the particle size of the rubber-like polymer is 4 μm.
If it is larger than this, it is not preferable because not only the impact strength is reduced but also the surface of the molded product becomes rough.

【0015】また必要に応じて他のABS系重合体やそ
の他のポリマー、または添加剤等を混合することも本発
明の構成に含まれる。例えば、他のポリマーとして、ス
チレン−アクリロニトリル樹脂、ブタジエンゴム、SB
R、エチレン−プロピレンゴム、アクリル酸エステル−
ブタジエン共重合体などのアクリル系エラストマー等が
好ましい。
The present invention also includes the mixing of other ABS-based polymers or other polymers, additives, and the like, if necessary. For example, as other polymers, styrene-acrylonitrile resin, butadiene rubber, SB
R, ethylene-propylene rubber, acrylate-
Acrylic elastomers such as butadiene copolymers are preferred.

【0016】本発明におけるABS樹脂の製造方法とし
ては、溶液重合または塊状重合法が好ましく公知の方法
でよく、一例を挙げると単量体と必要であれば前記単量
体と共重合可能な他の単量体及び必要に応じてエチルベ
ンゼン、トルエン、メチルエチルケトン等の溶剤に溶液
重合で合成されたゴム状重合体を溶解し、分子量調節
剤、重合開始剤等を添加するか、あるいは添加しない
で、該ゴム状重合体の単量体溶液を攪拌式反応器に連続
的に供給し、該単量体の一部または全量を共重合させゴ
ム状重合体成分の粒子を形成する。得られた重合体混合
液を脱揮発分槽に導入し、未反応単量体、溶剤を含んで
いる場合は溶剤を重合体成分から分離する。その後造粒
工程を経てペレット状のABS樹脂が得られる。
The method for producing the ABS resin in the present invention is preferably a solution polymerization method or a bulk polymerization method, which may be a known method. For example, a monomer and a monomer which can be copolymerized with the monomer if necessary. Dissolve the rubbery polymer synthesized by solution polymerization in a solvent such as monomer and ethylbenzene, toluene, methyl ethyl ketone as needed, and add or do not add a molecular weight regulator, a polymerization initiator, etc. The monomer solution of the rubber-like polymer is continuously supplied to a stirring reactor, and a part or all of the monomer is copolymerized to form particles of a rubber-like polymer component. The obtained polymer mixture is introduced into a devolatilization tank, and the solvent is separated from the polymer component when the solvent contains an unreacted monomer and a solvent. Thereafter, the pelletized ABS resin is obtained through a granulation step.

【0017】本発明の樹脂成形物を得る方法としては、
上述のABS樹脂にセルロース粉末、さらには必要に応
じて着色剤その他添加剤を添加し、例えば、ヘンシェル
ミキサー、バンバリーミキサー、リボンブレンダーなど
により攪拌・混合を行って得た配合粉として、さらには
必要に応じて、例えば、コニカル二軸押出機、パラレル
二軸押出機、単軸押出機、コニーダー型押出機、ロール
混練機などの混練機により造粒したペレットとして得る
ことができる。
The method for obtaining the resin molded product of the present invention includes:
The above-mentioned ABS resin is added with a cellulose powder and, if necessary, a coloring agent and other additives. For example, a blended powder obtained by stirring and mixing with a Henschel mixer, a Banbury mixer, a ribbon blender, etc. According to the above, for example, pellets obtained by a kneading machine such as a conical twin-screw extruder, a parallel twin-screw extruder, a single-screw extruder, a kneader type extruder, and a roll kneader can be obtained.

【0018】上記で得た配合粉又はペレットを用いて、
シリンダー温度、ダイス温度共に200℃以下の条件下
で押出成形、異形押出成形、射出成形、カレンダー成
形、真空成形、ブロー成形等の溶融成形することによ
り、容易に木質感に優れた木目調樹脂成形物を得ること
ができる。ここで重要なことは、シリンダーとダイスの
温度が200℃を越えると、セルロース粉末の焼けが生
じることから、その温度を200℃以下に設定すること
である。
Using the blended powder or pellet obtained above,
Melt molding such as extrusion molding, profile extrusion molding, injection molding, calender molding, vacuum molding, blow molding, etc. under the condition that the cylinder temperature and the die temperature are 200 ° C or less, easily produce woodgrain-like resin with excellent woody feel. You can get things. What is important here is that if the temperature of the cylinder and the die exceeds 200 ° C., burning of the cellulose powder occurs, so that the temperature is set to 200 ° C. or less.

【0019】また、本発明の成形物を成形する時の特徴
として、従来の木粉やセルロースとABS樹脂の混合物
においては押し出し時や成形加工時にダイスや金型にヤ
ニ状物質が付着するという問題が生じるが、本発明の成
形物の成形時には、このヤニ状付着物質が大幅に低減さ
れるものであり、これも本発明の大きな効果である。こ
の効果についての原理は明確ではないが、本発明のAB
S系重合体の海相成分(S)に含まれる不飽和ニトリル
成分が特定の分布であること、特定のゴム状重合体を用
いることが、かかるヤニ状物質の発生量の低減につなが
ると推定される。
Another characteristic of the molded article of the present invention is that, in the case of conventional wood powder or a mixture of cellulose and ABS resin, a dust-like substance adheres to a die or a mold during extrusion or molding. However, when the molded article of the present invention is formed, the tan-like adhered substance is greatly reduced, which is also a great effect of the present invention. Although the principle of this effect is not clear, the AB of the present invention is not clear.
It is estimated that the specific distribution of the unsaturated nitrile component contained in the sea-phase component (S) of the S-based polymer and the use of the specific rubber-like polymer will lead to a reduction in the amount of such slime-like substances. Is done.

【0020】本発明の着色剤とは、プラスチック用着色
剤であり、公知のものは何れでもよく、例えば、染料や
顔料が挙げられ、添加剤入りとして具体的にはドライカ
ラー;染料・顔料+分散剤(金属石鹸、ワックス)、ペ
ーストカラー;染料・顔料+液体の分散剤(可塑剤、ポ
リエステル、ポリオール)、リキッドカラー;染料・顔
料+高沸点液状分散剤(ノニオン系界面活性剤)であ
る。これら顔料として無機顔料の具体例としては、クレ
ー、雲母、黄土、チタンホワイト、亜鉛華、弁柄、酸化
クロム、鉄黒、アルミナ白、黄色酸化鉄、カドミニウム
黄、カドミニウム赤、硫化亜鉛、アンチモン白、銀朱、
炭酸カルシウム、炭酸マグネシウム、珪酸カルシウム、
群青、タルク、黄鉛、亜鉛黄、バリウム黄、モリブデン
赤、硫酸バリウム、硫酸鉛、硫酸ストロンチウム、紺
青、水酸化アルミニウム、カーボンブラック、松煙、グ
ラファイト、アルミニウム粉、ブロンズ粉など。また、
有機顔料としては、具体的にはマダーレーキ、ロックウ
ッドレーキ、コチニールレーキ、カミン6B、レッド2
B、レーキレッドC、ジスアッゾイエロー、ハンザイエ
ロー、ナフトールレッド、ポリアゾイエロー、ポリアゾ
レッド、フタロシアニン系顔料、アントラキノン系顔
料、キナクリドン系顔料、ジオキサジンバイオレット、
ペリレンレッド、キナフタロンイエローなど、他に塩基
性染料、酸性染料、建て染め染料および媒染染料等が挙
げられる。
The coloring agent of the present invention is a coloring agent for plastics, and any known coloring agent may be used. Examples thereof include dyes and pigments. Specific examples of additives include dry color; Dispersant (metal soap, wax), paste color; dye / pigment + liquid dispersant (plasticizer, polyester, polyol), liquid color; dye / pigment + high-boiling liquid dispersant (nonionic surfactant) . Specific examples of inorganic pigments as these pigments include clay, mica, loess, titanium white, zinc white, red iron oxide, chromium oxide, iron black, alumina white, yellow iron oxide, cadmium yellow, cadmium red, zinc sulfide, and antimony white. , Silver vermillion,
Calcium carbonate, magnesium carbonate, calcium silicate,
Ultramarine, talc, graphite, zinc yellow, barium yellow, molybdenum red, barium sulfate, lead sulfate, strontium sulfate, navy blue, aluminum hydroxide, carbon black, pine smoke, graphite, aluminum powder, bronze powder, etc. Also,
Specific examples of organic pigments include Madder Lake, Rockwood Lake, Cochineal Lake, Cumin 6B, Red 2
B, lake red C, disazo yellow, Hansa yellow, naphthol red, polyazo yellow, polyazo red, phthalocyanine pigment, anthraquinone pigment, quinacridone pigment, dioxazine violet,
Other examples include basic dyes, acid dyes, vat dyes and mordant dyes, such as perylene red and quinaphthalone yellow.

【0021】これらの着色剤は、必要に応じて白度80
%以上のセルロース粉末とABS樹脂とともにあらかじ
め溶融混練して押し出し機でペレット化しておくことも
できる。また同じ着色剤あるいは別の種類の着色剤を、
ABS樹脂に対する200℃における剪断速度103
ec-1下での溶融粘度の比が0.4以下または2.5以
上であるスチレン系樹脂に対して3〜20重量%を同様
に溶融混練して押し出し機でペレット化しておくことが
好ましい。
These coloring agents may have a whiteness of 80 if necessary.
% Or more of the cellulose powder and the ABS resin in advance and melt-kneaded and pelletized by an extruder. Also, the same colorant or another type of colorant,
Shear rate of 10 3 s at 200 ° C. for ABS resin
It is preferable that 3 to 20% by weight of the styrene resin having a melt viscosity ratio under ec -1 of 0.4 or less or 2.5 or more is similarly melt-kneaded and pelletized by an extruder. .

【0022】本発明の成形に適した温度は上述のように
シリンダーとダイスの温度が200℃を越えると、セル
ロース粉末の焼けが生じることから、成形温度は200
℃以下である。特に採用される範囲は160℃から19
0℃の範囲である。
The temperature suitable for the molding of the present invention is, as described above, when the temperature of the cylinder and the die exceeds 200 ° C., burning of the cellulose powder occurs.
It is below ° C. Particularly adopted range is from 160 ° C to 19 ° C.
It is in the range of 0 ° C.

【0023】本発明で用いられるスチレン系樹脂として
はポリスチレン、ゴムで強化した高衝撃ポリスチレン、
アクリロニトリル−スチレン共重合体樹脂(AS樹
脂)、ABS樹脂、アクリロニトリル−アクリルゴム−
スチレン共重合体樹脂(AAS樹脂)、アクリロニトリ
ル−エチレン(EPDM)−スチレン共重合体樹脂(A
ES樹脂)、メチルメタクリル酸(MMA)−スチレン
共重合体樹脂(MS樹脂)等が好適に用いられる。成形
品が木目調となるためには成形温度での流動条件、すな
わち着色剤を大量に含むこれらの樹脂とセルロースを大
量に含むABS樹脂の溶融粘度差が影響を与える。具体
的には溶融粘度測定装置を用いて測定した200℃にお
ける剪断速度103 sec-1下での溶融粘度のABS樹
脂に対する比が0.4以下または2.5以上であると木
質感のある木目調の成形物が得られる。200℃におけ
る剪断速度103 sec-1下での溶融粘度の比が0.4
と2.5の間にあると樹脂が相溶して、着色剤が均一に
分散されてしまい、木目調の成形物が得られない。ここ
で粘度比の測定は、市販の溶融粘度測定装置を使用して
200℃での溶融粘度を測定することで容易に行える。
As the styrene resin used in the present invention, polystyrene, high impact polystyrene reinforced with rubber,
Acrylonitrile-styrene copolymer resin (AS resin), ABS resin, acrylonitrile-acrylic rubber-
Styrene copolymer resin (AAS resin), acrylonitrile-ethylene (EPDM) -styrene copolymer resin (A
ES resin), methyl methacrylic acid (MMA) -styrene copolymer resin (MS resin) and the like are preferably used. In order for the molded article to have a woodgrain tone, the flow conditions at the molding temperature, that is, the difference in melt viscosity between these resins containing a large amount of colorant and the ABS resin containing a large amount of cellulose has an effect. Specifically, when the ratio of the melt viscosity to the ABS resin under a shear rate of 10 3 sec -1 at 200 ° C. measured using a melt viscosity measuring device is 0.4 or less or 2.5 or more, a woody feeling is obtained. A wood grain shaped product is obtained. The melt viscosity ratio at a shear rate of 10 3 sec -1 at 200 ° C. is 0.4
When the ratio is between 2.5 and 2.5, the resins are compatible with each other and the colorant is uniformly dispersed, so that a wood-grained molded product cannot be obtained. Here, the viscosity ratio can be easily measured by measuring the melt viscosity at 200 ° C. using a commercially available melt viscosity measuring device.

【0024】本発明で重要なのは、白度80%以上のセ
ルロース粉末1〜60重量%とABS樹脂40〜99重
量%および必要に応じて添加する着色剤からなる樹脂組
成物(1)100重量部に対して、着色剤3〜20重量
%と該ABS樹脂に対して、200℃における剪断速度
103 sec-1下での溶融粘度の比が0.4以下または
2.5以上であるスチレン系樹脂80〜97重量%から
なる樹脂組成物(2)0.1〜10重量部混合すること
であり、この混合に際し、樹脂組成物(2)が0.1重
量部未満では木目が確認できず、また10重量部を越え
ると色が濃くなりすぎて木目調の木質感が出ないので好
ましくない。
What is important in the present invention is 100 to 100 parts by weight of a resin composition (1) comprising 1 to 60% by weight of a cellulose powder having a whiteness of 80% or more, 40 to 99% by weight of an ABS resin and a coloring agent added as required. A styrene-based resin having a ratio of the melt viscosity at 200 ° C. under a shear rate of 10 3 sec −1 to 0.4 to 2.5 or more with respect to 3 to 20% by weight of a coloring agent and the ABS resin. 0.1 to 10 parts by weight of the resin composition (2) composed of 80 to 97% by weight of the resin. In this mixing, if the amount of the resin composition (2) is less than 0.1 part by weight, grain cannot be confirmed. On the other hand, if it exceeds 10 parts by weight, the color becomes too dark and wood-like wood texture is not obtained, which is not preferable.

【0025】本発明で使用する発泡剤としては、公知の
ものの何れでもよく、例えば、空気、水、窒素、炭酸ガ
ス、ブタンガス、ペンタン、フロンガスなどのガス類や
炭酸塩や重炭酸塩などの無機発泡剤やイソシアネート
類、アゾ化合物、ヒドラジン誘導体、セミカルバジド化
合物、アジド化合物、ニトロソ化合物、トリアゾール化
合物等の有機発泡剤、たとえばp,p’−オキシ−ビス
(ベンゼンスルホニルヒドラジド)、アゾジカルボンア
ミド、炭酸水素ナトリウムなどが挙げられる。発泡剤の
使用量は成形品によって異なるが0.01〜1重量部で
ある。
The foaming agent used in the present invention may be any of known ones, for example, gases such as air, water, nitrogen, carbon dioxide, butane gas, pentane and chlorofluorocarbon, and inorganics such as carbonate and bicarbonate. Blowing agents and organic blowing agents such as isocyanates, azo compounds, hydrazine derivatives, semicarbazide compounds, azide compounds, nitroso compounds, and triazole compounds, for example, p, p'-oxy-bis (benzenesulfonylhydrazide), azodicarbonamide, hydrogen carbonate Sodium and the like. The amount of the foaming agent used varies depending on the molded product, but is 0.01 to 1 part by weight.

【0026】本発明に用いる上述の樹脂成形物には、一
般に用いられる充填剤、酸化防止剤、紫外線吸収剤、核
剤、耐衝撃改良剤、加工助剤、エラストマーなどを必要
に応じて用いることができる。ここでいう加工助剤とし
ては、公知のものの何れでもよく、例えば、ポリメチル
メタクリレートが挙げられる。また酸化防止剤として
は、公知のものの何れでもよく、例えば、アルキルフェ
ノール型、アルキレン・ビスフェノール型、アルキルフ
ェノール・チオエーテル型、β,β’−チオプロピオン
酸エステル型、有機亜リン酸エステル型、芳香族アミン
型、フェノール・ニッケル複合体などが挙げられる。紫
外線吸収剤としては、公知のものの何れでもよく、例え
ば、サリチル酸エステル系、ベンゾトリアゾール系、ヒ
ドロキシベンゾフェノン系などが挙げられる。
In the above-mentioned resin molded product used in the present invention, generally used fillers, antioxidants, ultraviolet absorbers, nucleating agents, impact modifiers, processing aids, elastomers and the like may be used as required. Can be. The processing aid mentioned here may be any of known ones, for example, polymethyl methacrylate. The antioxidant may be any of known ones, for example, alkylphenol type, alkylene bisphenol type, alkylphenol thioether type, β, β′-thiopropionate type, organic phosphite type, aromatic amine Mold, phenol / nickel complex, and the like. The ultraviolet absorber may be any of known ones, and examples thereof include salicylic acid esters, benzotriazoles, and hydroxybenzophenones.

【0027】本発明の樹脂成形物はさらに一般的に使用
される無機充填剤を使用しても良く、例えば、炭酸カル
シウム、クレー、含水珪酸、無水珪酸、珪酸カルシウ
ム、珪酸アルミニウムアスベスト粉、酸化アンチモン、
タルク、三水和アルミニウム、水和硼酸亜鉛、マグネシ
ャ、重曹、硝酸加里、水酸化カルシウム、雲母、合成フ
ッ素雲母等が挙げられる。以上の一般に用いられる添加
剤については、市場で容易に入手可能であり、必要に応
じて使用することができる。
The resin molded product of the present invention may further use commonly used inorganic fillers, for example, calcium carbonate, clay, hydrous silicic acid, anhydrous silicic acid, calcium silicate, aluminum silicate asbestos powder, antimony oxide. ,
Examples include talc, aluminum trihydrate, hydrated zinc borate, magnesia, sodium bicarbonate, nitric acid, calcium hydroxide, mica, and synthetic fluorine mica. These commonly used additives are readily available on the market and can be used as needed.

【0028】本発明のもう一つの特徴は、木質感を有す
る木目調の成形物とするために得られる成形物の比重を
0.5〜1.0にする必要があり、上記で添加されるも
のの量は成形物の比重がこれらの範囲になるように決め
ることである。
Another feature of the present invention is that it is necessary that the specific gravity of the molded product obtained in order to obtain a wood-grained molded product having a woody feel be 0.5 to 1.0. The amount is determined so that the specific gravity of the molded product falls within these ranges.

【0029】[0029]

【実施例】以下、実施例により本発明をさらに具体的に
する。この実施例は単なる例示であって本発明はこれら
に限るものではない。
The present invention will be more specifically described below with reference to examples. This embodiment is merely an example, and the present invention is not limited to these embodiments.

【0030】本実施例でセルロース粉末とABS樹脂と
必要に応じて添加する着色剤とからなる組成物は、コニ
ーダー型押し出し機を用いてシリンダー温度・ダイス温
度は190℃に設定してペレット化した。さらに該AB
S樹脂に対して200℃における剪断速度103 sec
-1下での溶融粘度の比が0.4以下または2.5以上で
あるスチレン系樹脂と着色剤からなる組成物の製造は押
し出し機を使用してそれらの樹脂の通常の押し出し条件
でペレット化した。
In the present example, the composition comprising the cellulose powder, the ABS resin, and the coloring agent to be added as required was pelletized by setting the cylinder temperature and the die temperature to 190 ° C. using a co-kneader type extruder. . The AB
Shear rate at 200 ° C. for S resin 10 3 sec
Production of a composition comprising a styrenic resin having a melt viscosity ratio of 0.4 or less or 2.5 or more under -1 and a colorant is performed using an extruder under the usual extrusion conditions of the resin. It has become.

【0031】樹脂の分子量としては、メルトフローイン
デックス(特定の温度のもと一定の加重で10分間押し
出しさ樹脂の重量で表した。以下、MIと記す)で表
し、JISの測定(JIS−K7210、試験温度20
0℃、加重5.00kgf)に準じた。
The molecular weight of the resin is represented by a melt flow index (expressed by the weight of the resin extruded at a specific temperature and at a constant load for 10 minutes; hereinafter, referred to as MI) and measured by JIS (JIS-K7210). , Test temperature 20
0 ° C., weight 5.00 kgf).

【0032】溶融粘度の比は東洋精機製キャピログラフ
を使用して、直径1mm、長さ10mmのキャピラリー
を使用して、シリンダー温度200℃で剪断速度103
sec-1下での溶融粘度を測定した。
The ratio of the melt viscosity was determined by using a capillary having a diameter of 1 mm and a length of 10 mm using a Toyo Seiki Capillograph at a cylinder temperature of 200 ° C. and a shear rate of 10 3.
The melt viscosity under sec -1 was measured.

【0033】成形は東洋精機製作所(株)社製ラボプラ
ストミル−コニカル二軸押出機2D−20C型を使用
し、ダイスにはスリットダイ(W=40mm、H=1m
m、L=60mm)を使用して、シリンダー温度・ダイ
ス温度は200℃を越えないそれぞれの樹脂により任意
の温度に設定し、幅40mm、厚み1mmの平板成形物
を成形し、この成形物を用いて木質感について以下のよ
うに評価した。木質感については、成形物の艶を測定し
評価した。測定は、堀場製作所(株)社製ハンディー光
沢計グロスチェッカーIG−320を使用して行った。
ここではグロス値が15以下で木質感があると判断し
た。また、成形物と天然の杉板を本研究者以外の研究者
10名に目視と触診で比較観察してもらい、そのときそ
の成形物が天然の杉板に近い木質感があると判断した研
究者の人数も結果に示す。
The molding was performed using a Labo Plastomill-Conical twin screw extruder 2D-20C manufactured by Toyo Seiki Seisaku-sho, Ltd., and a slit die (W = 40 mm, H = 1 m) was used as a die.
m, L = 60 mm), the cylinder temperature and the die temperature are set to an arbitrary temperature with each resin not exceeding 200 ° C., and a flat plate having a width of 40 mm and a thickness of 1 mm is formed. The wood texture was evaluated as follows. The luster of the molded article was measured and evaluated for the feeling of wood. The measurement was performed using a handy gloss meter gloss checker IG-320 manufactured by Horiba, Ltd.
Here, it was determined that there was a woody feeling when the gloss value was 15 or less. In addition, a study was conducted in which 10 researchers other than the present researcher visually and palpated the molded article and the natural cedar board, and judged that the molded article had a woody feel close to that of the natural cedar board. The number of participants is also shown in the results.

【0034】実施例1 ABS樹脂として溶液重合法で製造したブタジエンゴム
を使用して、連続塊状重合法で製造したメルトフローレ
ートが0.70g/10分のABS樹脂(メチルエチル
ケトンとメタノール7:3の混合液に不溶解な成分を除
いた重合体成分(A)中のアクリロニトリル成分が24
重量%であり、かつ重合体成分(A)の還元粘度(ηs
p/c)が0.71dl/gであり、ゴム状重合体成分
の平均粒径が2.5μmで、0.4μm以上のゴム粒子
の50%以上が0.1μm以上の細胞径を含むサラミ状
の構造であり、細胞径の面積がゴム粒子全体の面積の7
0%を占めている粒子として分散相を25重量%の割合
で含む。)100重量部に白度80%以上のセルロース
粉末(日本製紙(株)社製、KCフロック W100)
30重量部を三井三池(株)社製ヘンシェルミキサーに
て混合し、得られた組成物をブッス社製ブッスコニーダ
ー押出機にて190℃で造粒し、ペレット(1)を得
た。また、スチレン系樹脂として別のABS樹脂(20
0℃における剪断速度103 sec-1下での溶融粘度比
(対ABS樹脂)が0.3)100重量部に着色剤とし
てアントラキノン系のオレンジ顔料5重量部を混合後、
二軸押し出し機を用いて260℃で造粒し、ペレット
(2)を得た。
Example 1 Using a butadiene rubber produced by a solution polymerization method as an ABS resin, an ABS resin (methyl ethyl ketone and methanol 7: 3) produced by a continuous bulk polymerization method and having a melt flow rate of 0.70 g / 10 min. The acrylonitrile component in the polymer component (A) excluding the component insoluble in the mixture is 24.
% And the reduced viscosity (ηs) of the polymer component (A).
p / c) is 0.71 dl / g, the average particle size of the rubber-like polymer component is 2.5 μm, and 50% or more of the rubber particles having a size of 0.4 μm or more have a cell diameter of 0.1 μm or more. The cell diameter area is 7 times the area of the entire rubber particles.
It contains 25% by weight of the dispersed phase as particles accounting for 0%. ) 100% by weight of cellulose powder having a whiteness of 80% or more (KC Floc W100, manufactured by Nippon Paper Industries Co., Ltd.)
30 parts by weight were mixed with a Henschel mixer manufactured by Mitsui Miike Co., Ltd., and the resulting composition was granulated at 190 ° C. using a bussine kneader extruder manufactured by Buss Co., to obtain pellets (1). In addition, another ABS resin (20
After mixing 5 parts by weight of an anthraquinone-based orange pigment as a colorant with 100 parts by weight of a melt viscosity ratio (to ABS resin) at a shear rate of 10 3 sec -1 at 0 ° C. of 0.3),
Granulation was performed at 260 ° C. using a twin-screw extruder to obtain a pellet (2).

【0035】上記ペレット(1)100重量部に対し
て、ペレット(2)1重量部と、発泡剤としてp,p’
−オキシ−ビス(ベンゼンスルホニルヒドラジド)を
0.1重量部添加して、東洋精機製作所(株)社製ラボ
プラストミルコニカル二軸押出機2D−20C型を使用
し、ダイスにはスリットダイ(W=40mm、H=1m
m、L=60mm)を使用して、シリンダー温度を19
0℃、ダイス温度を190℃設定で、幅40mm、厚み
1mmの平板成形品を得た。この平板成形物を上述の通
りに木質感について評価した。また金型付着物質の観察
を行い、成形後ダイスに付着物がなければ無し、有ると
有りの判断を行った。結果を表1に示す。
With respect to 100 parts by weight of the pellet (1), 1 part by weight of the pellet (2) and p, p ′ as a foaming agent were used.
-Oxy-bis (benzenesulfonyl hydrazide) was added in an amount of 0.1 part by weight, and a Labo Plastomill conical twin-screw extruder 2D-20C manufactured by Toyo Seiki Seisaku-sho, Ltd. was used, and a slit die (W = 40mm, H = 1m
m, L = 60 mm) and the cylinder temperature was 19
A flat molded product having a width of 40 mm and a thickness of 1 mm was obtained at 0 ° C. and a die temperature of 190 ° C. This flat molded product was evaluated for a feeling of wood as described above. Also, the adhered substance of the mold was observed, and it was determined that there was no adhered substance on the die after molding, and that there was an adhered substance. Table 1 shows the results.

【0036】実施例2 ペレット(1)におけるABS樹脂として、溶液重合法
で製造したブタジエンゴムを使用して、連続塊状重合法
で製造したメルトフローレートが1.20g/10分の
アクリロニトリル−ブタジエン−スチレン共重合体(メ
チルエチルケトンとメタノール7:3の混合液に不溶解
な成分を除いた重合体成分(A)中のアクリロニトリル
成分が24重量%であり、かつ重合体成分(A)の還元
粘度(ηsp/c)が0.62dl/gであり、ゴム状
重合体成分の平均粒径が0.85μmで、0.4μm以
上のゴム粒子の50%以上が0.1μm以上の細胞径を
含むサラミ状の構造であり、細胞径の面積がゴム粒子全
体の面積の70%を占めている粒子として分散相を30
重量%の割合で含む。)100重量部に白度80%以上
のセルロース粉末20重量部とリン系加工安定剤(日本
チバガイギー(株)社製、IRGAFOS−168)
0.1重量部、ヒンダードフェノール系酸化防止剤(日
本チバガイギー(株)社製、イルガノックス1010)
0.1重量部を用い、またスチレン系樹脂として別のA
BS樹脂(200℃における剪断速度103 sec-1
での溶融粘度比(対ABS樹脂)が3)100重量部に
着色剤5重量部を混合後、二軸押し出し機を用いて26
0℃で造粒してペレット(2)を得た他は実施例1と同
様にして平板成形品を得て評価した。結果を表1に示
す。
Example 2 Using butadiene rubber produced by a solution polymerization method as the ABS resin in the pellet (1), acrylonitrile-butadiene-melt flow rate produced by a continuous bulk polymerization method was 1.20 g / 10 min. Styrene copolymer (24% by weight of acrylonitrile component in polymer component (A) excluding components insoluble in a mixed solution of methyl ethyl ketone and methanol 7: 3, and reduced viscosity of polymer component (A) ηsp / c) is 0.62 dl / g, the average particle size of the rubber-like polymer component is 0.85 μm, and 50% or more of the rubber particles of 0.4 μm or more have a cell diameter of 0.1 μm or more. The particles have a cell-shaped area occupying 70% of the total area of the rubber particles.
Included in percentage by weight. ) 100 parts by weight of 20 parts by weight of cellulose powder having a whiteness of 80% or more and a phosphorus-based processing stabilizer (IRGAFOS-168, manufactured by Nippon Ciba Geigy Co., Ltd.)
0.1 parts by weight, hindered phenolic antioxidant (Irganox 1010, manufactured by Nippon Ciba Geigy Co., Ltd.)
0.1 parts by weight, and another A as a styrene resin
100 parts by weight of a BS resin (melt viscosity ratio at 200 ° C. under a shear rate of 10 3 sec -1 (to ABS resin) of 3) was mixed with 5 parts by weight of a coloring agent, and then mixed with a biaxial extruder.
A flat plate was obtained and evaluated in the same manner as in Example 1 except that pellets (2) were obtained by granulation at 0 ° C. Table 1 shows the results.

【0037】実施例3 白度80%以上のセルロース粉末を80重量部に代えた
他は実施例2と同様にしてペレットを得て、さらに平板
成形物を得て評価した。結果を表1に示す。
Example 3 A pellet was obtained in the same manner as in Example 2 except that 80 parts by weight of the cellulose powder having a whiteness of 80% or more was used, and a flat plate-shaped product was obtained and evaluated. Table 1 shows the results.

【0038】実施例4 ペレット(1)におけるABS樹脂として溶液重合法で
製造したブタジエンゴムを使用して、連続塊状重合法で
製造したメルトフローレートが5.10g/10分のア
クリロニトリル−ブタジエン−スチレン共重合体(メチ
ルエチルケトンとメタノール7:3の混合液に不溶解な
成分を除いた重合体成分(A)中のアクリロニトリル成
分が15重量%であり、かつ重合体成分(A)の還元粘
度(ηsp/c)が0.44dl/gであり、ゴム状重
合体成分の平均粒径が0.85μmで、0.4μm以上
のゴム粒子の50%以上が0.1μm以上の細胞径を含
むサラミ状の構造であり、細胞径の面積がゴム粒子全体
の面積の80%を占めている粒子として分散相を33重
量%の割合で含む。)100重量部に白度80%以上の
セルロース粉末50重量部とリン系加工安定剤(日本チ
バガイギー(株)社製、IRGAFOS−168)0.
1重量部、ヒンダードフェノール系酸化防止剤(日本チ
バガイギー(株)社製、イルガノックス1010)0.
1重量部を用い、またスチレン系樹脂として別のABS
樹脂(200℃における剪断速度10 3 sec-1下での
溶融粘度比(対ABS樹脂)が4)100重量部に着色
剤5重量部を混合後、二軸押し出し機を用いて260℃
で造粒してペレット(2)を得た。発泡剤を0.3重量
部添加した以外は実施例1と同様にして平板成形品を得
て評価した。結果を表1に示す。
Example 4 As an ABS resin in the pellet (1), a solution polymerization method was used.
Using the produced butadiene rubber, a continuous bulk polymerization method
The melt flow rate is 5.10 g / 10 min.
Acrylonitrile-butadiene-styrene copolymer (methyl
Insoluble in a mixture of ethyl ethyl ketone and methanol 7: 3
Acrylonitrile component in the polymer component (A) excluding the component
Is 15% by weight and the reduced viscosity of the polymer component (A) is 15% by weight.
Degree (ηsp / c) is 0.44 dl / g,
The average particle size of the coalesced component is 0.85 μm and 0.4 μm or more
50% or more of the rubber particles contain a cell diameter of 0.1 μm or more.
It has a salami-like structure and the cell diameter area is the entire rubber particle
Of dispersed phase as particles occupying 80% of the area of
Included in percentages by volume. ) 100% by weight of whiteness of 80% or more
50 parts by weight of cellulose powder and phosphorus-based processing stabilizer
IRGAFOS-168, manufactured by Bagagiy Co., Ltd.)
1 part by weight, hindered phenolic antioxidant
Bagangie Co., Ltd., Irganox 1010)
1 part by weight, and another ABS as styrene resin
Resin (shear rate at 200 ° C. 10 Threesec-1Under
Melt viscosity ratio (to ABS resin) 4) 100 parts by weight
After mixing 5 parts by weight of the agent, 260 ° C. using a twin screw extruder.
To obtain a pellet (2). 0.3 weight of blowing agent
A flat molded product was obtained in the same manner as in Example 1 except that
Was evaluated. Table 1 shows the results.

【0039】実施例5 スチレン系樹脂としてABS樹脂に代え、200℃にお
ける剪断速度103 sec-1下での溶融粘度比(対AB
S樹脂)が3.5の高衝撃性ポリスチレンを用いた他は
実施例1と同様にして平板成形品を得て評価した。結果
を表1に示す。
Example 5 The melt viscosity ratio (to AB) at 200 ° C. under a shear rate of 10 3 sec -1 was replaced with ABS resin as the styrene resin.
A flat molded product was obtained and evaluated in the same manner as in Example 1 except that high impact polystyrene having an S resin of 3.5 was used. Table 1 shows the results.

【0040】実施例6 スチレン系樹脂としてABS樹脂に代え、200℃にお
ける剪断速度103 sec-1下での溶融粘度比(対AB
S樹脂)が4のAS樹脂を用いた他は実施例1と同様に
して平板成形品を得て評価した。結果を表1に示す。
Example 6 The melt viscosity ratio (to AB) at 200 ° C. under a shear rate of 10 3 sec -1 was replaced by an ABS resin as the styrene resin.
A flat molded product was obtained and evaluated in the same manner as in Example 1 except that the AS resin having the S resin of 4 was used. Table 1 shows the results.

【0041】[0041]

【表1】 [Table 1]

【0042】比較例1 白度80%以上のセルロース粉末を0.5重量部に代え
た他は実施例1と同様にペレットを得、平板成形品を評
価した。結果を表2に示す。
Comparative Example 1 Pellets were obtained in the same manner as in Example 1 except that the cellulose powder having a whiteness of 80% or more was replaced with 0.5 part by weight, and a flat molded product was evaluated. Table 2 shows the results.

【0043】比較例2 白度80%以上のセルロース粉末を160重量部に代え
た他は実施例2と同様にしたところ、ペレットとして得
ることが出来なかった。結果を表2に示す。
Comparative Example 2 The procedure of Example 2 was repeated except that the amount of cellulose powder having a whiteness of 80% or more was changed to 160 parts by weight, but no pellet was obtained. Table 2 shows the results.

【0044】比較例3 ABS樹脂として乳化重合法で製造したメルトフローレ
ートが2.50g/10分のアクリロニトリル−ブタジ
エン−スチレン共重合体(メチルエチルケトンとメタノ
ール7:3の混合液に不溶解な成分を除いた重合体成分
(A)中のアクリロニトリル成分が25重量%であり、
かつ重合体成分(A)の還元粘度(ηsp/c)が0.
62dl/gであり、ゴム状重合体成分の平均粒径が
0.25μmで、サラミ状の構造のゴム粒子を含まな
い。)に代えた他は実施例1と同様にペレットを得、平
板成形品を評価した。結果を表2に示す。
Comparative Example 3 An acrylonitrile-butadiene-styrene copolymer having a melt flow rate of 2.50 g / 10 min (a component insoluble in a mixture of methyl ethyl ketone and methanol 7: 3) was produced as an ABS resin by an emulsion polymerization method. The acrylonitrile component in the removed polymer component (A) is 25% by weight,
And the reduced viscosity (ηsp / c) of the polymer component (A) is 0.1.
It is 62 dl / g, the average particle size of the rubber-like polymer component is 0.25 μm, and does not contain rubber particles having a salami-like structure. ), Pellets were obtained in the same manner as in Example 1, and the flat molded product was evaluated. Table 2 shows the results.

【0045】比較例4 白度80%以下の市販の木粉に代えた他は実施例1と同
様にペレットを得、平板成形品を評価した。結果を表2
に示す。
Comparative Example 4 Pellets were obtained in the same manner as in Example 1 except that commercially available wood flour having a whiteness of 80% or less was used. Table 2 shows the results
Shown in

【0046】比較例5 スチレン系樹脂として、200℃における剪断速度10
3 sec-1下での溶融粘度比(対ABS樹脂)が1.7
のABS樹脂を使用した他は実施例1と同様にペレット
を得、平板成形品としたところ木目は殆ど見られなかっ
た。結果を表2に示す。
Comparative Example 5 As a styrene resin, a shear rate at 200 ° C. of 10
The melt viscosity ratio (to ABS resin) under 3 sec -1 is 1.7.
A pellet was obtained in the same manner as in Example 1 except that the ABS resin was used, and a flat molded product was obtained. Table 2 shows the results.

【0047】[0047]

【表2】 [Table 2]

【0048】[0048]

【発明の効果】目的用途に応じた樹脂を用い、木質感に
優れる木質様樹脂組成物及びその成形物を提供でき、産
業上さらには地球環境の面からも極めて優位である。
According to the present invention, it is possible to provide a woody-like resin composition having excellent woody feel and a molded product thereof by using a resin suitable for the intended use, which is extremely advantageous in terms of industry and global environment.

─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成10年10月23日(1998.10.
23)
[Submission date] October 23, 1998 (1998.10.
23)

【手続補正1】[Procedure amendment 1]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0013[Correction target item name] 0013

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0013】本発明のABS樹脂からメチルエチルケト
ンとメタノール7:3の混合液に不溶解な成分を除いた
重合体成分(A)中のアクリロニトリル成分が10〜3
0重量%であり、かつ重合体成分(A)の還元粘度(η
sp/c)が0.4〜0.9dl/gであり、好ましく
は0.4〜0.80dl/g、さらに好ましくは0.4
5〜0.75dl/gである。還元粘度が0.4dl/
gより小さいと衝撃強度が著しく低下するので好ましく
なく、また0.9dl/gを越えると流動性が低下し、
成形可能な温度が高くなり、そのために色相の悪化が起
こるため好ましくない。ここで還元粘度とは海相成分
(S)の0.25gを精秤し、ジメチルホルムアミド5
0mlに2時間かけて溶解させた溶液を、溶媒の流下時
間が20〜100秒のウベローデ粘度計を用いて30℃
の環境で測定して得られる値で、還元粘度は溶媒の流下
秒数(t0 )と溶液の流下秒数(t)から次式(1)
によって求める。
The acrylonitrile component in the polymer component (A) obtained by removing the insoluble component in the mixture of methyl ethyl ketone and methanol 7: 3 from the ABS resin of the present invention is 10-3.
0% by weight and the reduced viscosity (η) of the polymer component (A).
sp / c) is 0.4 to 0.9 dl / g, preferably 0.4 to 0.80 dl / g, and more preferably 0.4 to 0.9 dl / g.
5 to 0.75 dl / g. Reduced viscosity 0.4 dl /
If it is less than 0.9 g, the impact strength is remarkably reduced, so that it is not preferable. If it exceeds 0.9 dl / g, the fluidity decreases,
The temperature at which molding can be performed is increased, and the hue is deteriorated, which is not preferable. Here, the reduced viscosity means that 0.25 g of the sea phase component (S) is precisely weighed, and dimethylformamide 5
The solution dissolved in 0 ml for 2 hours was heated to 30 ° C. using a Ubbelohde viscometer with a solvent flow time of 20 to 100 seconds.
With a value obtained by measuring in the environment, reduced viscosity falling seconds of the solvent (t 0) by the following equation from falling seconds of the solution (t) (Equation 1)
Ask by.

【手続補正2】[Procedure amendment 2]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】0014[Correction target item name] 0014

【補正方法】変更[Correction method] Change

【補正内容】[Correction contents]

【0014】[0014]

【数1】還元粘度(ηsp/c)={(t/t0
1}/0.5
## EQU1 ## Reduced viscosity (ηsp / c) = {(t / t)0)
1} /0.5

フロントページの続き Fターム(参考) 4F074 AA02 AA13 AA32 AA33 AA98 AB05 AD07 AG06 BA19 CA22 CC04X CC05Y CC05Z DA02 DA35 DA50 DA58 4J002 AB012 BC033 BC063 BG063 BN063 BN143 BN151 BN153 DE027 DE096 DE106 DE116 DE136 DE217 DE236 DG026 DJ036 DJ046 DJ056 EA017 EB007 EQ017 EQ027 EQ037 ER007 EU167 FD012 FD096 FD327 GL00 GN00 Continued on the front page F-term (reference) 4F074 AA02 AA13 AA32 AA33 AA98 AB05 AD07 AG06 BA19 CA22 CC04X CC05Y CC05Z DA02 DA35 DA50 DA58 4J002 AB012 BC033 BC063 BG063 BN063 BN143 BN151 BN153 DE027 DE096 DJ106 DE067 DE106 DE067 EQ027 EQ037 ER007 EU167 FD012 FD096 FD327 GL00 GN00

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】(1)白度80%以上のセルロース粉末1
〜60重量%とアクリロニトリル−ブタジエン−スチレ
ン共重合体樹脂(以下、ABS樹脂)40〜99重量%
からなる樹脂組成物100重量部に対して、(2)着色
剤3〜20重量%と、該ABS樹脂に対して、200℃
における剪断速度103 sec-1下での溶融粘度の比が
0.4以下または2.5以上であるスチレン系樹脂80
〜97重量%からなる樹脂組成物0.1〜10重量部と
(3)発泡剤0.01〜1重量部を混合成形して得られ
る比重が0.5〜1.0である木目調樹脂成形物。
(1) Cellulose powder 1 having whiteness of 80% or more
To 60% by weight and 40 to 99% by weight of an acrylonitrile-butadiene-styrene copolymer resin (hereinafter referred to as ABS resin)
(2) 3 to 20% by weight of a colorant with respect to 100 parts by weight of a resin composition comprising
Having a melt viscosity ratio of 0.4 or less or 2.5 or more under a shear rate of 10 3 sec -1
Wood-grain resin having a specific gravity of 0.5 to 1.0 obtained by mixing and molding 0.1 to 10 parts by weight of a resin composition consisting of 0.1 to 97% by weight and (3) 0.01 to 1 part by weight of a foaming agent. Moldings.
【請求項2】請求項1記載のABS樹脂が、溶液重合で
合成されたゴム状重合体を溶解した、少なくともスチレ
ン系単量体及びアクリロニトリル系単量体、必要であれ
ば前記単量体と共重合可能な他の単量体より成る溶液を
塊状重合法および/または溶液重合法により製造された
ABS樹脂であって、メチルエチルケトンとメタノール
7:3の混合液に不溶解な成分を除いた重合体成分
(A)中のアクリロニトリル成分が10〜30重量%で
あり、かつ重合体成分(A)の還元粘度(ηsp/c)
が0.4〜0.9dl/gであり、該ゴム状重合体成分
からなるゴム粒子の平均粒径が0.4〜4μmで、0.
4μm以上のゴム粒子の50%以上が0.1μm以上の
細胞径を含むサラミ状の構造であり、細胞径の面積がゴ
ム粒子全体の面積の50%以上を占めている粒子として
分散相を10〜35重量%の割合で形成してなる木目調
樹脂成形物。
2. The ABS resin according to claim 1, wherein a rubbery polymer synthesized by solution polymerization is dissolved, wherein at least a styrene monomer and an acrylonitrile monomer, and if necessary, A solution comprising another copolymerizable monomer is prepared by bulk polymerization and / or solution polymerization, and is an ABS resin prepared by removing a component insoluble in a mixture of methyl ethyl ketone and methanol 7: 3. The acrylonitrile component in the combined component (A) is 10 to 30% by weight, and the reduced viscosity (ηsp / c) of the polymer component (A)
Is 0.4 to 0.9 dl / g, and the average particle diameter of the rubber particles comprising the rubbery polymer component is 0.4 to 4 μm.
50% or more of the rubber particles having a particle diameter of 4 μm or more have a salami-like structure containing a cell diameter of 0.1 μm or more, and the dispersed phase is 10 particles as particles having an area of the cell diameter occupying 50% or more of the area of the whole rubber particles. A woodgrain-like resin molded product formed at a ratio of about 35% by weight.
【請求項3】請求項1記載のスチレン系樹脂が、該AB
S樹脂に対して、200℃における剪断速度103 se
-1下での溶融粘度の比が0.4以下または2.5以上
のABS樹脂である木目調樹脂成形物。
3. A method according to claim 1, wherein the styrenic resin is AB.
Shear rate at 200 ° C. for S resin is 10 3 sec.
A woodgrain-like resin molded product which is an ABS resin having a melt viscosity ratio of 0.4 or less or 2.5 or more under c -1 .
【請求項4】請求項1記載のスチレン系樹脂が、該AB
S樹脂に対して、200℃における剪断速度103 se
-1下での溶融粘度の比が0.4以下または2.5以上
のアクリロニトリル−スチレン共重合体樹脂(AS樹
脂)である木目調樹脂成形物。
4. The styrenic resin according to claim 1, wherein said AB
Shear rate at 200 ° C. for S resin is 10 3 sec.
A woodgrain-like resin molded product which is an acrylonitrile-styrene copolymer resin (AS resin) having a melt viscosity ratio of 0.4 or less or 2.5 or more under c -1 .
【請求項5】請求項1記載のスチレン系樹脂が、該AB
S樹脂に対して、200℃における剪断速度103 se
-1下での溶融粘度の比が0.4以下または2.5以上
のポリスチレン樹脂である木目調樹脂成形物。
5. The method according to claim 1, wherein the styrenic resin is AB.
Shear rate at 200 ° C. for S resin is 10 3 sec.
A woodgrain-like resin molded product which is a polystyrene resin having a melt viscosity ratio of 0.4 or less or 2.5 or more under c -1 .
JP28155498A 1998-10-02 1998-10-02 Wood-tone resin molding Expired - Fee Related JP3695958B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006002007A (en) * 2004-06-16 2006-01-05 Umg Abs Ltd Thermoplastic compound resin composition and grain tone pattern resin composition obtained by molding the same
WO2013108719A1 (en) * 2012-01-17 2013-07-25 日本エイアンドエル株式会社 Rubber-reinforced styrene resin composition for resin foams, and resin foam
JP2022021744A (en) * 2020-07-22 2022-02-03 Psジャパン株式会社 Styrene-based resin composition and molded article

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120101190A1 (en) 2010-10-22 2012-04-26 Fuji Xerox Co., Ltd. Resin composition and resin molded article

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006002007A (en) * 2004-06-16 2006-01-05 Umg Abs Ltd Thermoplastic compound resin composition and grain tone pattern resin composition obtained by molding the same
WO2013108719A1 (en) * 2012-01-17 2013-07-25 日本エイアンドエル株式会社 Rubber-reinforced styrene resin composition for resin foams, and resin foam
JP2022021744A (en) * 2020-07-22 2022-02-03 Psジャパン株式会社 Styrene-based resin composition and molded article
JP7477388B2 (en) 2020-07-22 2024-05-01 Psジャパン株式会社 Styrenic resin composition and molded article

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