JPS60177055A - Vinyl chloride resin composition - Google Patents

Abstract

PURPOSE:To obtain the titled composition having small linear expansion coefficient, high resistance to thermal deformation, excellent physical properties such as impact resistance, and extremely excellent moldability and weather resistance, giving a molded article having good surface state, and suitable for rainwater guttering, etc., by compounding a vinyl chloride resin with short glass fibers, an inorganic filler, a modifier, a processing aid, and an ultraviolet absorber. CONSTITUTION:(A) 100pts.(wt.) of a vinyl chloride resin is compounded with (B) 5-30pts. of short glass fibers (e.g. chopped glass fibers cut to 0.05-3mm. long and preferably surface-treated with a coupling agent), (C) 10-50pts. of an inorganic filler (e.g. ultrafine calcium carbonate), (D) 5-20pts. of a modifier selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, ABS and MBS, (E) 1-10pts. of a processing aid selected from MAS and polymethyl methacrylate and (F) 0.05-0.5pt. of an ultraviolet absorber (e.g. a salicylate ester).

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、線膨張率が小さく而も物性及び外観が優れた
成形品、特に雨樋、デツキ材、窓枠等の薄肉成形品に好
適な塩化ビニル系樹脂組成物に関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention is suitable for molded products with a small coefficient of linear expansion and excellent physical properties and appearance, particularly thin-walled molded products such as rain gutters, decking materials, and window frames. The present invention relates to a vinyl chloride resin composition.

（従来技術） 近年、塩化ビニル系樹脂製成形品、例えば、硬質塩化ビ
ニル製雨樋が多く用いられるようになってきているが、
硬質塩化ビニル製雨樋は金属製雨樋と比べて線膨張率が
大きく、使用時、気温の変化により、長手方向の長さが
変化して接続部又は止め金具の部分で変形や破損を起こ
したり、日射を直接受けた部分が熱膨張して曲がったり
波打ったすしゃずいという欠点があった。(Prior art) In recent years, molded products made of vinyl chloride resin, such as rain gutters made of hard vinyl chloride, have been increasingly used.
Rigid PVC rain gutters have a higher coefficient of linear expansion than metal rain gutters, and during use, changes in temperature may cause changes in longitudinal length, causing deformation or breakage at connections or fasteners. In addition, the parts exposed directly to the sun's rays thermally expanded, causing them to bend and become wavy.

しかして、従来、特公昭５３−２１８９１号公報に記載
の如り、５０〜１８０の粘度指数のビニル樹脂１００重
量部と、個々の粒子の平均直径が０．０５〜５０μであ
る無機充填剤１０〜６０重量部と、潤滑剤１．５〜５重
量部と、長さ４〜６−−のガラス繊維５〜４０重量部と
を有する押出成形組成物が提案されているが、ガラス繊
維が樹脂中に均一に分敗しに＜＜、又混入されたガラス
繊維とビニル樹脂との接着性が悪くて、ガラス繊維の周
りに大きな空隙が発生し、このためガラス繊維が加えら
れる前のビニル樹脂に比べて、成形品の耐衝撃性等の物
性が著しく低下してしまい、又成形性が著しく悪くなり
、成形品の表面状態が滑らかとならず、外観が悪いばか
りでなく、これが起因して、屋外で使用された時に短時
間の内に白化する（チョーキング）という欠点があった
。Conventionally, as described in Japanese Patent Publication No. 53-21891, 100 parts by weight of a vinyl resin having a viscosity index of 50 to 180 and 10 parts by weight of an inorganic filler whose individual particles have an average diameter of 0.05 to 50 μm are used. - 60 parts by weight, 1.5 to 5 parts by weight of lubricant, and 5 to 40 parts by weight of glass fibers of 4 to 6 lengths have been proposed, but the glass fibers are In addition, the adhesion between the mixed glass fiber and the vinyl resin is poor, resulting in large voids around the glass fiber, which causes the vinyl resin to deteriorate before the glass fiber is added. Compared to the molded product, the physical properties such as impact resistance are significantly reduced, and the moldability is also significantly worse, the surface condition of the molded product is not smooth, and not only does it have a poor appearance, but also However, it had the disadvantage of whitening (chalking) within a short period of time when used outdoors.

（発明の目的） 本発明老は、如上の事実に鑑がみ、鋭、α検δ・１した
結果、ガラス短繊維の長さを極く短くし、且つガラス短
繊維と樹脂との間の密着性を良くする改質剤を加え、更
に成形時の練りを良くする加工助剤を加え、且つ成形品
の耐候性を改良する紫外線吸収剤を加えることにより、
叙上の如き従来の欠点を解消し得ることを見い出し本発
明をなすに至ったものであり、本発明は、線膨張率が小
さくて熱変形が起こりにくく、しかも耐衝撃性等の物性
が優れ、且つ成形性及び耐候性が優れ、表面状態の滑ら
かな成形品、特に雨樋、デツキ祠、窓枠等の薄肉の成形
品に好適な塩化ビニル系樹脂組成物を提供することを目
的とするものである。(Purpose of the Invention) In view of the above facts, the present inventor has made a thorough examination of α, δ and 1, and as a result, the length of the short glass fibers is extremely shortened, and the length between the short glass fibers and the resin is reduced. By adding a modifier to improve adhesion, a processing aid to improve kneading during molding, and an ultraviolet absorber to improve the weather resistance of the molded product,
The present invention has been developed by discovering that the above-mentioned conventional drawbacks can be overcome. The purpose of the present invention is to provide a vinyl chloride resin composition that has excellent moldability and weather resistance, and is suitable for molded products with smooth surfaces, especially thin-walled molded products such as rain gutters, deck sheds, and window frames. It is something.

（発明の要旨） 本発明の要旨は、塩化ビニル系樹脂１００重量部に、ガ
ラス短繊維５乃至３０重量部と、無機充填剤ｌＯ乃至５
０重量部と、塩素化ポリエチレン、エチレン−酢酸ビニ
ル共重合体、アクリルニトリル−ブタジェン−スチレン
共重合体及びメチルメタアクリレート−ブタジェン−ス
チレン共重合体の中から選択された少なくとも１種の改
質剤５乃至２０重量部と、メチルメタクリレート−アク
リルニトリル−スチレン共重合体及びメチルメタアクリ
レートの中から選択された少なくとも１種の加工助剤１
乃至５重量部と、紫外線吸収剤０．０５乃至０．５重量
部とを加えてなる塩化ビニル系樹脂組成物に存する。(Summary of the Invention) The gist of the present invention is to add 100 parts by weight of vinyl chloride resin, 5 to 30 parts by weight of short glass fibers, and 10 to 5 parts by weight of an inorganic filler.
0 parts by weight, and at least one modifier selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. 5 to 20 parts by weight and at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate 1
5 parts by weight of a vinyl chloride resin composition, and 0.05 to 0.5 parts by weight of an ultraviolet absorber.

（発明の構成） 本発明に使用される塩化ビニル系樹脂としては、例えば
、ポリ塩化ビニル（ＰＶＣ）　、ポリ塩化ビニリデン及
び塩素化ポリ塩化ビニル（塩素化ＰＶＣ）等が好適に使
用され、就中、ポリ塩化ビニル（ＰＶＣ）が特に好適に
使用される。(Structure of the Invention) As the vinyl chloride resin used in the present invention, for example, polyvinyl chloride (PVC), polyvinylidene chloride, chlorinated polyvinyl chloride (chlorinated PVC), etc. are preferably used. , polyvinyl chloride (PVC) is particularly preferably used.

本発明に使用されるガラス短繊維としＣは、例えば、ス
トランドが長さ０．０５〜３ＩＩ１１（成形品中に存在
時）に切断されたガラスチョップや、長さ０．０５〜３
龍（成形品中に存在時）に切断されたパイル状のもの等
が好適に使用され、就中、長さ０．０５〜３■職（成形
品中に存在時）に切断されたガラスチョップが特に好適
に使用され、又エポキシシラン等のカップリング処理剤
にて表面処理されたものが好適に使用される。The short glass fibers C used in the present invention are, for example, glass chops whose strands are cut into lengths of 0.05 to 3II11 (when present in the molded product), or glass chops whose strands are cut to lengths of 0.05 to 3
Glass chops cut into lengths of 0.05 to 3 mm (when present in the molded product) are preferably used. are particularly preferably used, and those surface-treated with a coupling treatment agent such as epoxy silane are preferably used.

本発明に使用される無機充填剤としては、例えば、沈降
性炭酸カルシウム、軽微性炭酸力ルシュウム、極微細炭
酸カルシウムの如き炭酸カルシウム、シリカ、タルク、
ケイソウ土、クレー、マイカ等のケイ酸塩及びアルミナ
等が好適に使用され、就中、極微細炭酸カルシウムが特
に好適に使用され、又有機酸塩等で表面処理されたもの
が好適に使用され、又粒径が０．１　μ以下のものが好
適に使用される。Inorganic fillers used in the present invention include, for example, calcium carbonate such as precipitated calcium carbonate, slight lucium carbonate, ultrafine calcium carbonate, silica, talc,
Silicates such as diatomaceous earth, clay, mica, and alumina are preferably used, and among them, ultrafine calcium carbonate is particularly preferably used, and those whose surface has been treated with organic acid salts are preferably used. , particles having a particle size of 0.1 μm or less are preferably used.

本発明に使用される改質剤としては、系中に加えられる
ことにより、ガラス短繊維と塩化ビニル系４１（１１Ｈ
との間の密着性を改良し、ガラス短繊維の周りに発生ず
る空隙を小さく押さえ、成形品の１！１旧÷ｊ撃強度等
を向上さ−Ｖるもので、塩素化ポリエチレン（塩素化Ｐ
Ｅ）、エチレン−酢酸ビニル共重合体、アクリルニトリ
ル−ブタジェン−スチレン共重合体（ＡＢＳ）及びメチ
ルメタアクリレ−１〜−ブタジェン−スチレン共重合体
（ＭＢＳ）の中から選択された少なくとも１種のものが
使用される。The modifier used in the present invention includes short glass fibers and vinyl chloride-based 41 (11H) by adding it into the system.
It improves the adhesion between the short glass fibers, suppresses the voids that occur around the short glass fibers, and improves the 1!1 old ÷ j impact strength of the molded product. P
E), at least one selected from ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer (ABS), and methyl methacrylate-1--butadiene-styrene copolymer (MBS) are used.

本発明に使用される加工助剤としては、メチルメタアク
リレート−アクリルニトリル−スチレン共重合体（ＭＡ
Ｓ）及びメチルメタアクリレート（ＭＭＡ）の中から選
択された少なくとも１種のものが使用される。The processing aid used in the present invention is methyl methacrylate-acrylonitrile-styrene copolymer (MA
At least one selected from S) and methyl methacrylate (MMA) is used.

本発明に使用される紫外線線吸収剤としては、例えば、
サリシレートエステル、ヘンシェードエステル、ヘンシ
フエノン系、ベンゾトリアゾール系およびアクリルニト
リル系が好適に使用される。Examples of the ultraviolet absorber used in the present invention include:
Salicylate esters, Henshade esters, hensifhenones, benzotriazoles and acrylonitriles are preferably used.

本発明においては、上記のものの他、安定剤、顔料が必
要に応じて併用されてもよい。In the present invention, in addition to the above, stabilizers and pigments may be used in combination as necessary.

本発明においては、上記のものの他、安定剤、顔料が必
要に応じて併用されてもよい。In the present invention, in addition to the above, stabilizers and pigments may be used in combination as necessary.

本発明においては、他の成分と共に、ガラス短繊維を、
塩化ビニル系樹脂１００重量部に対して、５乃至３０ｊ
ｌｉ量部加えることにより、成形性及び耐衝撃性等を悪
くさせることなく、成形品の線膨張率を小さくし、且つ
剛性を大きくし、温度変化により熱変形しにくくする。In the present invention, short glass fibers are used together with other components.
5 to 30j per 100 parts by weight of vinyl chloride resin
By adding a certain amount of li, the coefficient of linear expansion of the molded product is reduced, the rigidity is increased, and the molded product is resistant to thermal deformation due to temperature changes without deteriorating moldability, impact resistance, etc.

ガラス短繊維が全く加えられζいないか又はその添加量
が塩化ビニル系樹脂１００重量部に対して、５Ｍ量部未
満の少量加えられただけでは、充分な効果が期待できず
、又３０重量部を越えるような多量加えられた場合は、
成形性が悪くなり、成形品の外観が？’？ｔらかと成ら
ず、又耐衝撃性及び耐候性が悪くなってしまう。If short glass fibers are not added at all, or if they are added in small amounts, less than 5M parts per 100 parts by weight of vinyl chloride resin, a sufficient effect cannot be expected; If a large amount is added, exceeding the
Does the moldability deteriorate and the appearance of the molded product change? '? In addition, impact resistance and weather resistance deteriorate.

本発明においては、他の成分と共に、無機充填剤を、塩
化ビニル系樹脂１００重量部に対して、１０乃至５０重
量部加えることにより、耐候性及び耐衝撃性等を悪くさ
せることなく、成形品の、剛性を改良し、温度変化によ
り熱変形しにくくする。無機充填剤が全く加えられない
か又はその添加量が塩化ビニル系樹脂１００重量部に対
して１０重量部未満の少量加えられただけでは、充分な
効果が期待できず、又５０重量部を越えるような多量加
えられた場合は、耐ｉｆＪ撃性及び耐候性が悪くなって
しまう。In the present invention, by adding 10 to 50 parts by weight of an inorganic filler to 100 parts by weight of vinyl chloride resin together with other components, molded products can be produced without deteriorating weather resistance, impact resistance, etc. Improves rigidity and makes it less susceptible to thermal deformation due to temperature changes. If an inorganic filler is not added at all or if it is added in a small amount of less than 10 parts by weight per 100 parts by weight of vinyl chloride resin, a sufficient effect cannot be expected, or if it is added in an amount exceeding 50 parts by weight. If such a large amount is added, the ifJ impact resistance and weather resistance will deteriorate.

本発明においては、他の成分と共に、前記改質剤を、塩
化ビニル系樹脂１００重量部に対して、５乃至２０重量
部加えることにより、線膨張率を大きくさゼることなく
、成形品の耐衝撃性及び剛性等の物性を改良する。改質
剤が全く加えられないか又は５重量部未満の少量加えら
れただけでは、充分な効果が期待できず、又２０重量部
を越えるような多量加えられた場合は、線膨張率が大き
くなってしまう。In the present invention, by adding 5 to 20 parts by weight of the modifier together with other components to 100 parts by weight of the vinyl chloride resin, the molded product can be improved without greatly increasing the coefficient of linear expansion. Improve physical properties such as impact resistance and rigidity. If the modifier is not added at all or if it is added in a small amount of less than 5 parts by weight, sufficient effects cannot be expected, and if it is added in a large amount exceeding 20 parts by weight, the coefficient of linear expansion will be large. turn into.

本発明においては、他の成分と共に、前記加工助剤を、
塩化ビニル系樹脂１００重量部に対して、１乃至５重量
部加えることにより、線膨張率を大きくさせることなく
、改質剤と共に、成形品の耐７ｉｉ撃性及び剛性等の物
性を一層改良する。加工助剤が全く加えられないか又は
１重量部未満の少量加えられただりでは充分な効果が期
待できず、又５重量部を越えるような多量加えられた場
合は、成形品の線膨張率が大きくなってしまう。In the present invention, the processing aid, along with other ingredients,
By adding 1 to 5 parts by weight to 100 parts by weight of vinyl chloride resin, together with the modifier, the physical properties such as 7II impact resistance and rigidity of the molded product can be further improved without increasing the coefficient of linear expansion. . If the processing aid is not added at all or if it is added in a small amount (less than 1 part by weight), a sufficient effect cannot be expected, and if it is added in a large amount exceeding 5 parts by weight, the linear expansion coefficient of the molded product may be affected. becomes large.

本発明においては、他の成分と共に、紫外線吸収剤を、
塩化ビニル系樹脂１００市９部に対して、０．０５乃至
０．５重量部加えることにより、成形品の使用時におけ
る昇温を防止し、耐候性を改良する。紫外線吸収剤が全
く加えられないが又は０．０５重量部未満の少量加えら
れるだけでは充分な効果は期待できず、又０．５重量部
を越えるような多量加えても、有効に耐候性改良に寄与
しない。In the present invention, along with other components, a UV absorber is
By adding 0.05 to 0.5 parts by weight to 9 parts of 100 parts of vinyl chloride resin, temperature rise during use of the molded product is prevented and weather resistance is improved. If no UV absorber is added at all, or if it is added in a small amount (less than 0.05 parts by weight), a sufficient effect cannot be expected, and even if it is added in a large amount, exceeding 0.5 parts by weight, it will not effectively improve weather resistance. does not contribute to

（発明の効果） 本発明塩化ビニル系樹脂組成物は、塩化ビニル系樹脂１
００重量部に、ガラス短繊維５乃至３０重量部と、無機
充填剤ＩＯ乃至５０重量部と、前記改質剤５乃至２０重
量部と、前記加工助剤ｌ乃至５重量部と、紫外線吸収剤
０．０５乃至０．５重量部とを加えてなるものであるの
で、成形品の、線膨張率が小さくて温度変化による熱変
形が起こりに＜＜、而も抗張力、耐衝撃性の物性が優れ
ており、且つ成形性が極めて良く、成形品の表面状態力
＜？１１らかであり、外観がよく、又これと紫外線吸収
剤を入れ奈ごとにより、成形品の使用時における昇温を
防止し、耐候性が著しく改良され、屋外で使用した時に
短時間の内に白化する（千コーキング）ことがない。(Effects of the invention) The vinyl chloride resin composition of the present invention has a vinyl chloride resin 1
00 parts by weight, 5 to 30 parts by weight of short glass fibers, IO to 50 parts by weight of inorganic filler, 5 to 20 parts by weight of the modifier, 1 to 5 parts by weight of the processing aid, and ultraviolet absorber. 0.05 to 0.5 parts by weight, the linear expansion coefficient of the molded product is small and thermal deformation due to temperature changes occurs, and the physical properties such as tensile strength and impact resistance are It has excellent moldability, and the surface condition of the molded product is <? 11.It is smooth and has a good appearance.In addition, by adding a UV absorber to the product, it prevents the temperature from rising when the molded product is used, and its weather resistance is significantly improved. There is no whitening (1,000 caulking).

以下本発明を実施例により説明する。The present invention will be explained below with reference to Examples.

（実施例１，２） 第１表に示す配合物（ガラス短繊維は、長さ２〜５ｍ１
ｌで、表面がエボギシシランで処理されたもの使用）を
混合機に７１２０℃で６分間加熱混合し、この混合物を
ロール混練機に′ζ１６０℃で５分間混練して厚さ１．
２龍のシート状物を作り、このシート状物を粉砕して３
蒙−角のわ）砕片を作り、この粉砕片を押出機、金型に
て樹脂温度１８０乃至１８５℃で押出して、厚さ１．２
鶴の薄肉異形成形品を押出成形した。(Examples 1 and 2) The formulation shown in Table 1 (short glass fibers were 2 to 5 m in length)
1, the surface of which was treated with Evogishisilane) was heated and mixed in a mixer at 7,120°C for 6 minutes, and this mixture was kneaded in a roll kneader at 160°C for 5 minutes to a thickness of 1.
2 Make a dragon sheet-like material, crush this sheet-like material, and make 3.
The crushed pieces are extruded using an extruder and a mold at a resin temperature of 180 to 185°C to a thickness of 1.2 mm.
A thin-walled irregularly shaped crane was extruded.

成形品より試験片を切り出して、線膨張率、抗張力、伸
び、衝撃強度、熱収縮率、耐候性及び成形品中のガラス
短繊維の長さを測定し、又成形品中のガラス短繊維と樹
脂との間の密着性を観察した。その結果を実施例１．２
として第１表に示す。A test piece was cut out from the molded product, and the coefficient of linear expansion, tensile strength, elongation, impact strength, heat shrinkage rate, weather resistance, and length of the short glass fibers in the molded product were measured. The adhesion with the resin was observed. The results are shown in Example 1.2.
as shown in Table 1.

（比較例１） 第１表の比較例１の配合物を混合機にて良く混合し、こ
の混合物を押出機、金型にて樹脂４１４度１８０乃至１
８５°Ｃで押出しζ、厚さ１．２　ａｌｌの薄肉異形成
形品を押出成形した。その成形品より試験片を切り出し
て、線膨張率、抗張力、伸び、熱収縮率及び耐候性を測
定した結果を比較例１として第１表に併せて示す。(Comparative Example 1) The formulation of Comparative Example 1 in Table 1 was thoroughly mixed in a mixer, and the mixture was passed through an extruder and mold to a resin of 414 degrees, 180 degrees, and 180 degrees.
A thin profile shaped article having a thickness of 1.2 all was extruded by extrusion ζ at 85°C. A test piece was cut out from the molded product, and the linear expansion coefficient, tensile strength, elongation, heat shrinkage rate, and weather resistance were measured. The results are also shown in Table 1 as Comparative Example 1.

（比較例２） 第１表の比較例２の配合物（ガラス短繊維は、長さ４〜
（ｉ　＋＋ｍで、表面エポキシシランで処理されたもの
使用）を比較例１と同様の成形を試みたが、成形性が悪
く成形ができなかったので、第２表に示す配合物を混合
機にて常温で混合し、この混合物をロール混練機にて１
９０℃で５分間混練して厚さ１．２ｍ＋＋のシート状物
を作り、このシート状物を切り出しζ、ハンドプレスに
て、１９０℃５０　ｋｇ　／　ｃｕｔで２分間予熱後、
１９０℃１００　ｋｇ／　ｃｎｌで１分間プレスして１
．３鰭のシートを作製し、このシートより試験片を切り
出して実施例と同様の測定及び観察を行った結果を比較
例２として第１表に併せて示す。(Comparative Example 2) The formulation of Comparative Example 2 in Table 1 (the short glass fibers had a length of 4 to
(i++m, surface treated with epoxy silane) was tried to be molded in the same manner as in Comparative Example 1, but the moldability was poor and molding was not possible, so the mixture shown in Table 2 was used in a mixer. Mix this mixture at room temperature using a roll kneader.
Knead at 90℃ for 5 minutes to make a sheet with a thickness of 1.2m++, cut out this sheet and preheat with a hand press at 190℃ for 2 minutes at 50 kg/cut.
Press at 190℃ for 1 minute at 100 kg/cnl.
．． A 3-fin sheet was prepared, a test piece was cut out from this sheet, and the same measurements and observations as in the example were performed. The results are also shown in Table 1 as Comparative Example 2.

１゛１′仁わｉ膨張率についζは、ＡＳＴＭ：Ｄ６９６
に°Ｃ測定した。抗張力及び伸びについては、ＪＩＳＡ
５７０６にて測定した。衝撃強度についＣは、ＪＩＳＡ
５４００にて測定した。熱収縮率については、成形品よ
りその長手方向に長さ２００龍の試験片を切り出し３箇
所に１００１間隔に線を入れ、この試験片をギアーオー
ブンにて１００℃１５分間加熱後取り出し室温に放置し
た後、線間の長さを測定し°ζ、もとの長さに対する収
縮の度合（％）を算出した。又耐候性については１．Ｊ
ＩＳＡ１４１５の条件よりも圧力４゜５〜５　ｋｇ　ｆ
　／　ｃｒＡに上げた促進条件にて測定した。Regarding the expansion rate of 1゛1', ζ is ASTM: D696.
The temperature was measured in °C. Regarding tensile strength and elongation, JISA
Measured at 5706. Regarding impact strength, C is JISA
Measured at 5400. For the heat shrinkage rate, cut out a test piece with a length of 200 mm in the longitudinal direction from the molded product, make lines at 1001 intervals in 3 places, heat this test piece in a gear oven at 100°C for 15 minutes, then take it out and leave it at room temperature. After that, the length between the lines was measured, °ζ, and the degree of shrinkage (%) with respect to the original length was calculated. Regarding weather resistance, 1. J
Pressure 4゜5~5 kgf than the conditions of ISA1415
/crA under accelerated conditions.

又成形品中のガラス短繊維と樹脂との間の密着性は、試
験片の断面を電子顕微鏡にて見てガラス短繊維の周りの
空隙の発生状態を観察するごとにより判断した。The adhesion between the short glass fibers and the resin in the molded product was determined by observing the cross section of the test piece under an electron microscope and observing the generation of voids around the short glass fibers.

第１表からも明らかな如く、実施例１．２の場合はいず
れも、線膨張率が小さく、而も耐雨撃性等の物性がガラ
ス短繊維が分散されていない比較例１の値に匹敵する程
向上しζおり、又成形性は１．２　ｍ−の薄肉成形品の
成形が可能であり、成形品の表面状態も滑らかで均一で
あり極めて良好であった。又ガラス短繊維の周りには部
分的に僅かに極く小さい空隙が見られる程度で、ガラス
短繊維と樹脂との間が良く密着し°Ｃいる様子が観察さ
れた。又耐候性もガラス短繊維が分散されていない比較
例１の値に匹敵する程向上しζおり、著しく良かった。As is clear from Table 1, in both Examples 1 and 2, the coefficient of linear expansion is small, and physical properties such as rain impact resistance are comparable to those of Comparative Example 1 in which short glass fibers are not dispersed. In addition, the moldability was able to be molded into a thin molded product of 1.2 m, and the surface condition of the molded product was smooth and uniform, which was extremely good. In addition, it was observed that there was good adhesion between the short glass fibers and the resin, with only very small voids partially visible around the short glass fibers. Furthermore, the weather resistance was improved to the extent that it was comparable to that of Comparative Example 1 in which short glass fibers were not dispersed, and was extremely good.

尚、第１表からも明らかな如く、比較例１の場合は線膨
張率が著しく大きく温度変化により変形しやすいもので
ある。又比較例２の場合は、成形性が悪（、薄肉異形成
形品の成形ができず、又１１１１ｆ　神ｊ撃性等の物性
及び耐候性がとても実用に供することができない程悪か
った。又ガラス短繊翁「の周りには大きい空隙が見られ
、ガラス短繊維と樹脂との間は密着していなかった。（
以下余白） 第１表 ？：蕩肉憂措魔潜訟宮綴距廣肛下衾ガ奪青Ｔ竺０表面１
［株］１滑ら力４１勾−°４あ−た・第１頁の続き ■Ｉｎｔ、ＣＩ、’　識別記号　庁内整理番号２５：１
２） 手続ネｆｆｉ正書（自発） 昭和５９年　４月２６日 特許庁長官殿 １、事件の表示 昭和５９年特許願第３１７８８号 ２、発明の名称 塩化ビニル系樹脂組成物 ３、補正をする者 事件との関係　特許出願人 郵便番号　５３０ 住　所　大阪市北区西天満二丁目４番４号特許部　置　
（０６）　３６５−２１８１表補正の対象 （１）明細書の特許請求の範囲及び発明の詳細な説明の
欄。As is clear from Table 1, Comparative Example 1 has a significantly large coefficient of linear expansion and is easily deformed due to temperature changes. In addition, in the case of Comparative Example 2, the moldability was poor (it was not possible to mold thin-walled irregularly shaped products, and the physical properties such as 1111f shock resistance and weather resistance were so poor that they could not be used for practical use. Large voids were observed around the short fibers, and there was no close contact between the short glass fibers and the resin. (
(Left below) Table 1? : Insidious flesh fear magic hidden lawsuit Miya Tsuzuruhiro anal lower school Ga rob blue T-shirt 0 surface 1
[Stocks] 1 Sliding force 41 Slope 4 Atta・Continuation of 1st page ■Int, CI,' Identification code Internal reference number 25:1
2) Procedural Neffi official document (spontaneous) April 26, 1980 Mr. Commissioner of the Japan Patent Office 1. Indication of case 1982 Patent Application No. 31788 2. Name of invention Vinyl chloride resin composition 3. Amended. Relationship with the Patent Case Patent Applicant Postal Code 530 Address Patent Department 2-4-4 Nishitenma, Kita-ku, Osaka
(06) 365-2181 Table Subject to amendment (1) Scope of claims and detailed explanation of the invention in the specification.

５、補正の内容 （１）明細書の特許請求の範囲を別紙のとおり補正する
。5. Contents of the amendment (1) The claims of the specification will be amended as shown in the attached sheet.

（２）明細書第４頁下から第６行〜第５行及び第６頁下
から第４行〜第３行に１ ［メチルメタアクリレート」 とあるのを、 「ポリメチルメタアクリレート」 と補正する。(2) 1 [Methyl methacrylate] in lines 6 to 5 from the bottom of page 4 of the specification and lines 4 to 3 from the bottom of page 6 has been amended to read ``polymethyl methacrylate.'' do.

（３）明細書第６頁下から第３行及び第１５頁第１表（
第９行）に、 「ＭＭＡ」 とあるのを、 ［ＰＭＭＡＪ と補正する。(3) Line 3 from the bottom of page 6 of the specification and Table 1 of page 15 (
In line 9), "MMA" is corrected to [PMMAJ].

６添付書類の目録 ＋１）補正後の特許請求の範囲を記載した書面特許請求
の範囲 １、＃Ｌ化ビニル系樹脂Ｚｏｏ重量部に、ガラス短繊維
５乃至３０重量部と、無機充填剤ｌＯ乃至５０重置部と
、塩素化ポリエチレン、エチレン−酢酸ビニル共重合体
、アクリルニトリル−ブタジェン−スチレン共重合体及
びメチルメタアクリ′　レート−ブタジェン−スチレン
共重合体の中から選択された少なくとも１種の改質剤５
乃至２０重量部と、メチルメタアクリレート−アクリル
ニトリル−スチレン共重合体及びポリメチルメタアクリ
レートの中から選択された少なくとも１種の加工助剤ｌ
乃至５重量部と、紫外線吸収剤０．０５乃至０．５重量
部とを加えてなる塩化ビニル系樹脂組成物。6 List of Attached Documents + 1) A document stating the amended claims Claim 1: #L-vinyl resin Zoo weight parts, glass short fibers 5 to 30 weight parts, and inorganic fillers lO to 50 overlapping parts and at least one selected from chlorinated polyethylene, ethylene-vinyl acetate copolymer, acrylonitrile-butadiene-styrene copolymer, and methyl methacrylate-butadiene-styrene copolymer. Modifier 5
to 20 parts by weight, and at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and polymethyl methacrylate.
A vinyl chloride resin composition comprising 5 to 5 parts by weight of a UV absorber and 0.05 to 0.5 parts by weight of an ultraviolet absorber.

Claims (1)

【特許請求の範囲】[Claims] １、塩化ビニル系樹脂１００重量部に、ガラス短繊維５
乃至３０重量部と、無機充填剤１０乃至５０重量部と、
塩素化ポリエチレン、エチレン−酢酸ビニル共重合体、
アクリルニトリル−ブタジェン−スチレン共重合体及び
メチルメタアクリレート−ブタジェン−スチレン共重合
体の中から選択された少なくとも１種の改質剤５乃至２
０重量部と、メチルメタアクリレート−アクリルニトリ
ル−スチレン共重合体及びメチルメタアクリレートの中
から選択された少なくとも１種の加工助剤１乃至５重量
部と、紫外線吸収剤０．０５乃至０．５重量部とを加え
てなる塩化ビニル系樹脂組成物。1. 100 parts by weight of vinyl chloride resin, 5 parts by weight of short glass fibers
30 parts by weight, 10 to 50 parts by weight of an inorganic filler,
Chlorinated polyethylene, ethylene-vinyl acetate copolymer,
At least one modifier selected from acrylonitrile-butadiene-styrene copolymer and methyl methacrylate-butadiene-styrene copolymer 5 to 2
0 parts by weight, 1 to 5 parts by weight of at least one processing aid selected from methyl methacrylate-acrylonitrile-styrene copolymer and methyl methacrylate, and 0.05 to 0.5 parts by weight of an ultraviolet absorber. A vinyl chloride resin composition comprising parts by weight.