JPS6366247A - Production of rubber composition - Google Patents

Production of rubber composition

Info

Publication number
JPS6366247A
JPS6366247A JP21047586A JP21047586A JPS6366247A JP S6366247 A JPS6366247 A JP S6366247A JP 21047586 A JP21047586 A JP 21047586A JP 21047586 A JP21047586 A JP 21047586A JP S6366247 A JPS6366247 A JP S6366247A
Authority
JP
Japan
Prior art keywords
carbon black
rubber composition
treatment agent
rubber
producing
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
Application number
JP21047586A
Other languages
Japanese (ja)
Inventor
Hiroshi Takino
滝野 寛志
Hiroshi Matsumoto
洋 松本
Akira Okamura
岡村 彰
Harutaka Tomokuni
友国 治隆
Keishiro Oda
織田 圭司郎
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.)
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber Co Ltd
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 Toyo Tire and Rubber Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Priority to JP21047586A priority Critical patent/JPS6366247A/en
Publication of JPS6366247A publication Critical patent/JPS6366247A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To obtain a rubber composition having short kneading time, improved productivity, excellent dispersibility of carbon black and high tensile strength and abrasion resistance, by treating a carbon black with a surface-treatment agent containing an aliphatic carboxylic acid and compounding the treated carbon black to a rubber. CONSTITUTION:A rubber is mixed with a carbon black surface-treated with a surface-treatment agent containing a compound selected from aliphatic carboxylic acid and its derivative. The aliphatic carboxylic acid is a 5-20C acid such as fatty acid and the derivative is an ester with monohydric or polyhydric alcohol or metal salt. The carbon black is sprayed with the surface- treatment agent, granulated, dried and compounded to the rubber. The amount of the surface-treatment agent attached to the carbon black is 1-10wt%.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は密閉式混合機を用いて、ゴムに高補強性のカー
ボンブラックを混合して、タイヤ用jム組成物を製造す
る場合のカーボンブラックの混合法に関するものである
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is directed to mixing highly reinforcing carbon black with rubber using an internal mixer to produce carbon black when producing a rubber composition for tires. It concerns Black's method of mixing.

〔従来の技術〕[Conventional technology]

従来原料ゴムにカーボンブラックその他の配合剤を混合
するために、バシバリーミ士す−等の密閉式混合機が用
いられる。その混合機の主要部は、密閉された混合室と
、その内部に並列配置した0−ターよりなり、ローター
表面には1〜4条の畝状隆起があり、その隆起が攪拌羽
根の作用をしてゴムを混練する。混合室の外面及びロー
ター内部は水冷されている。
Conventionally, an internal mixer such as a vacuum cleaner is used to mix carbon black and other compounding agents with raw rubber. The main part of the mixer consists of a sealed mixing chamber and an O-rotor arranged in parallel inside the chamber.The rotor surface has 1 to 4 ridge-like ridges, and the ridges act as stirring blades. to knead the rubber. The outside of the mixing chamber and the inside of the rotor are water cooled.

j乙にカーボンブラックを混合するには、混合室にゴム
を投入し、ゴムを素線して可塑化し、次にカーボンブラ
ックを投入しで混練する。補強性の高いカーボンブラッ
クは分散が困難であるので、その分散を助けるために、
ステアリシ酸等の高級脂肪酸又はそのエステル等よりな
る加工助剤を添加する。これらの加工助剤は、カーボン
ブラックの投入と同時に又は若干遅れてゴムに添加され
る。
j To mix carbon black with B, put rubber into a mixing chamber, make the rubber into wires and plasticize it, then add carbon black and knead. Carbon black with high reinforcing properties is difficult to disperse, so to help with its dispersion,
A processing aid consisting of a higher fatty acid such as stearic acid or an ester thereof is added. These processing aids are added to the rubber at the same time as the carbon black is added, or after some delay.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

高補強性カーポジづう・υりは粒子径が小さく、吸着性
が大きいので、1ム中にカーポジづう・υりを均一に分
散混合するには、バシバリーミ十す−等の強力な混合力
を有する大型の混合機を必要とし、又その混合に要する
動力も非常に大きい。この混合はバッチ法で行うので、
生産性が低く、高価な混合機を用いるため、混合工程の
設備]ストが嵩む。このため、混合工程の1サイクルの
混合時間を短縮し、単位時間内の処理量を増加させて設
備コストを低減すると共に、混合に要する動力コストを
削減し、ゴム組酸物の製造]ストを削減することが望凍
れている。
Highly reinforcing carboxy resin has a small particle size and high adsorption properties, so in order to uniformly disperse and mix carboxy resin and resin in one layer, strong mixing force such as a vacuum cleaner is required. A large mixer is required, and the power required for mixing is also very large. This mixing is done in a batch method, so
Productivity is low and expensive mixers are used, resulting in increased equipment strikes for the mixing process. For this reason, the mixing time for one cycle of the mixing process is shortened, the amount of processing per unit time is increased, equipment costs are reduced, and the power cost required for mixing is reduced, making it possible to reduce the manufacturing cost of rubber composition acids. There is hope that it can be reduced.

従って本発明はゴムにカーボンブラックを混合する混練
工程において、混練時間を短縮すると共に、混練に必要
な動力を節減しうるゴム組成物の製法を提供することを
目的とする。
Therefore, an object of the present invention is to provide a method for producing a rubber composition that can shorten the kneading time and reduce the power required for kneading in the kneading step of mixing carbon black with rubber.

C問題点を解決するための手段〕 上記目的を達成すべく本発明者らが鋭意研究を重ねた結
果、従来1乙にカーポジづラックを添加する際に同時に
、又は若干遅れて添加されていた加工助剤の少くとも一
部を、予めカーボンブラック粒子の表面に均一に添着し
ておくことにより、ゴムの混練時間を短縮し、混練動力
を節減しうろことを見出し、本発明を完成するに到った
Means for Solving Problem C] As a result of intensive research by the present inventors in order to achieve the above object, it was found that conventionally, when adding Carposizu Lac to 1B, it was added at the same time or with a slight delay. It has been discovered that by uniformly adhering at least a part of the processing aid to the surface of carbon black particles in advance, the rubber kneading time can be shortened and the kneading power can be reduced, and the present invention has been completed. It has arrived.

即ち本発明は脂肪族カルボン酸及びその誘導体よりなる
群より選ばれた1種又は2種以上の化合物を含む表面処
理剤により、予め表面処理し念力−ポジブラックをゴム
に添加混合する工程を含むことを特徴とするゴム組成物
の製法を要旨とする。
That is, the present invention includes a step of preliminarily treating the surface with a surface treatment agent containing one or more compounds selected from the group consisting of aliphatic carboxylic acids and derivatives thereof, and adding and mixing telekinetic positive black to rubber. The gist of this invention is a method for producing a rubber composition characterized by the following.

本発明において、カーボンブラックの表面処理に用いら
れる表面処理剤は、炭素数5〜20の脂肪族カルボン酸
及びその誘導体が好捷しく用いられる。カルボン酸は1
価のカルボン酸であってもよいし、多価カルボン酸であ
ってもよく、直鎖カルボン酸、分岐カルボン酸のいずれ
でもよく、飽和カルボン酸、不飽和カルボン酸のいずれ
も用いられる。
In the present invention, as the surface treatment agent used for surface treatment of carbon black, aliphatic carboxylic acids having 5 to 20 carbon atoms and derivatives thereof are preferably used. Carboxylic acid is 1
The carboxylic acid may be a monovalent carboxylic acid or a polyhydric carboxylic acid, either a linear carboxylic acid or a branched carboxylic acid, and either a saturated carboxylic acid or an unsaturated carboxylic acid may be used.

本発明で用いられるカルボン酸の一例を挙げれば、ステ
アリシ酸、ラウリシ酸、パルミチシ酸、ツルじシ酸等が
挙げられる。
Examples of the carboxylic acids used in the present invention include stearic acid, lauric acid, palmitic acid, and turdisic acid.

本発明で用いられる脂肪族カルボン酸の誘導体としては
、エステル、アミド、塩類、酸無水物等が用いられる。
As the aliphatic carboxylic acid derivatives used in the present invention, esters, amides, salts, acid anhydrides, etc. are used.

上記エステルとしては、1価アルコール又は多価アルコ
ールのエステルが用いられ、tノエステル又はポリエス
テルが用いられる0例えばエチレシジリコールtノステ
アし一部、ペシタエリスリトールtノステアレート、ツ
ルじタシトリステアレート、づチルステアレート、ジエ
チレシジリコールtノステアレート等が挙げられる。
As the above-mentioned ester, an ester of a monohydric alcohol or a polyhydric alcohol is used, and an ester or a polyester is used. For example, ethylecidylcol t-nostearate, peshitaerythritol t-nostearate, and citrus tristearate. , dimethyl stearate, diethylecidylicol t-nostearate, and the like.

本発明で表面処理剤として用いられる脂肪族カルボン酸
塩としては、亜鉛、hルシウム等の金属塩が用いられ、
例えばステアリシ酸亜鉛、ラウリシ酸カルシウム等が挙
げられる。
As the aliphatic carboxylate used as a surface treatment agent in the present invention, metal salts such as zinc and lucium are used,
Examples include zinc stearicate and calcium lauricate.

上記のカルボン酸及びその誘導体は1種のみを用いても
よいし、2種以上の化合物を混合して用いてもよい。
The above carboxylic acids and derivatives thereof may be used alone or in combination of two or more.

表面処理剤をカーボンブラック表面に均一に添着する方
法は特に制限はないが、例えば表面処理剤を有機溶媒に
溶解した溶液を、カーボンブラックに噴霧して造粒、乾
燥する方法、上記溶液にカーボンブラックを浸漬、濾過
乾燥する方法等が用いられる。
There are no particular restrictions on the method for uniformly applying the surface treatment agent to the surface of carbon black, but for example, a method in which a solution of the surface treatment agent dissolved in an organic solvent is sprayed onto carbon black, granulated, and dried; A method of soaking black, filtering and drying, etc. is used.

カーボンブラックの一表面に添着する表面処理剤の量は
1〜10重量係が好ましい。1%未満では効果が小さく
、10%を越えてもそれ以上効果が増大しない。
The amount of surface treatment agent attached to one surface of carbon black is preferably 1 to 10% by weight. If it is less than 1%, the effect will be small, and if it exceeds 10%, the effect will not increase any further.

〔作用〕[Effect]

バシバリー三士す−等の混合機で素線した原料ゴムにカ
ーボンブラックを添加して混練する際の電力の時間的変
化を第1図に示す。図において0点で混合機に原料ゴム
を投入して素線をすると、一旦A点まで電力が増加して
実質的に素線が行われ、可塑化が進み、電力が低下する
Figure 1 shows the temporal change in electric power when carbon black is added to and kneaded raw rubber made into wires using a mixer such as Bashibury Sanshisu. In the figure, when the raw rubber is put into the mixer at point 0 and wire is formed, the electric power increases once to point A, where the wire is essentially formed, plasticization progresses, and the electric power decreases.

これに従来法によりB点でカーボンブラック及び表面処
理剤その他の配合剤を添加すると、C点寸で急激に電力
が増加したのち、低い平坦部C′〜Dがあり、その後E
丑で電力が増加し、更にFまで徐々に低下する。上記平
坦部C〜Dに相当する混合期間には実質的な混合が行わ
れず、D−Eの間に到ってはじめて実質的な混合が行わ
れ、更にE〜Fではり型化が進み、電力が低下する。
When carbon black, a surface treatment agent, and other compounding agents are added to this at point B using the conventional method, the power increases rapidly at point C, then there are low plateaus C' to D, and then E
The power increases with ox and then gradually decreases to F. Substantial mixing is not performed during the mixing period corresponding to the above-mentioned flat areas C to D, and substantial mixing is not performed until D to E, and further, beam formation progresses between E and F. Power decreases.

一方本発明の方法によりB点で表面処理剤で表面処理し
たカーポジづうツク及び配合剤を添加すると、0点まで
電力が急上昇し、C−Dの狭い肩部を経てE点まで電力
が増加する。その後可塑化により徐々にFlで電力が低
下する。
On the other hand, when the carposis treated with the surface treatment agent and the compounding agent are added at point B according to the method of the present invention, the power increases rapidly to point 0, and then increases to point E through the narrow shoulder of CD. . Thereafter, the power gradually decreases in Fl due to plasticization.

従って本発明の場合はC,Dの肩部は狭く、全混合時間
中実質的な混合が行われ、その結果、混合時間が短縮で
き、電力も節減できる。
Therefore, in the case of the present invention, the shoulders at C and D are narrow and substantial mixing occurs during the entire mixing time, resulting in shorter mixing times and power savings.

〔実施例〕〔Example〕

カーポジづうツクN242に造粒工程で表面処理剤のク
ロロホルム溶液を噴霧した後、造粒して乾燥し、次の3
種類の表面処理カーポジづラックを調製した。
After spraying a chloroform solution of a surface treatment agent on Carpositsu N242 in the granulation process, the granules are granulated and dried, and the following three steps are carried out.
Various surface-treated carposi racks were prepared.

表面処理カーホシブラックA:ステアリシ酸6.7重量
%添着衣面処理カーポジづラックB:エチレシジリコー
ルtノス〒アし一部2.2重量係添着 表面処理カーボンブラックC:ステアリフ酸6.7重量
%、及びエチしジグリコール七ノステ アレート2.2重量%添着 天然ゴムをB型バシパリー三士す−で0.5分間素線し
た後、これに上記3種類の表面処理力−ボシプラ・ツク
のいずれか及び亜鉛華、加工助剤を第1表の実施例1〜
4に示すように添加して、所定時間混合し、得られたゴ
ム組成物中のカーボンブラックの分散性を測定した。そ
の結果を第1表に示す。
Surface-treated carbon black A: 6.7% by weight of stearic acid Impregnated Surface-treated carbon black C: 6.7% by weight of stearic acid Surface-treated carbon black C: 6.7% by weight of stearic acid Natural rubber impregnated with 2.2% by weight of Ethyl Diglycol Heptanostearate and 2.2% by weight of ethylated diglycol heptanostearate was wired for 0.5 minutes using a B-type Vasipary Sanshi, and then treated with the above three types of surface treatment power - Bosipura. Examples 1 to 1 of Table 1, zinc white, and processing aids.
4 and mixed for a predetermined time, and the dispersibility of carbon black in the obtained rubber composition was measured. The results are shown in Table 1.

更に従来法により、未処理のカーボンブラックと表面処
理剤をそれぞれ天然ゴムに添加して、同様に混合し、得
られたゴム組酸物の分散性を測定カーポジづう・υり便
覧」(昭和46年11月25日、図書出版社発行)第2
81頁に記載の方法に準拠して測定した。即ち混合jΔ
を切断してシートを作り、その表面の50倍の顕微鏡写
真を撮り、標準写真と対比して、完全に分散している場
合を10として、分散の程度を数値で示す。
Furthermore, using the conventional method, untreated carbon black and a surface treatment agent were added to natural rubber, mixed in the same manner, and the dispersibility of the resulting rubber compound acid was measured. Published by Tosho Publishing Co., Ltd. on November 25th, 2013) Volume 2
It was measured according to the method described on page 81. That is, the mixture jΔ
Cut the sheet to make a sheet, take a microscopic photograph of its surface at 50 times magnification, compare it with a standard photograph, and indicate the degree of dispersion numerically, with 10 indicating complete dispersion.

(発明の効果〕 本発明のゴム組成物の製法によれば、ゴムとカーボンブ
ラックを混合する混練時間を短縮することができ、混練
工程の生産性が向上すると共に、混練に要する動力を節
減し、省エネル甲−化を図ることができる。更に本発明
の方法で得られたゴム組成物中のカーボンブラックは分
散性が優れ、加硫後のゴム組酸物の引張強さ、耐摩耗性
等の物性が向上する。
(Effects of the invention) According to the method for producing a rubber composition of the present invention, the kneading time for mixing rubber and carbon black can be shortened, the productivity of the kneading process is improved, and the power required for kneading can be reduced. Furthermore, the carbon black in the rubber composition obtained by the method of the present invention has excellent dispersibility, and the tensile strength and abrasion resistance of the rubber compound acid after vulcanization are improved. Improves physical properties such as

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明及び従来のゴム組成物の製法における素
線及び混練工程の混合機の電力の時間的変化を示すジう
フである。
FIG. 1 is a diagram showing temporal changes in the electric power of the wire and the mixer in the kneading step in the present invention and the conventional method for producing a rubber composition.

Claims (8)

【特許請求の範囲】[Claims] (1)脂肪族カルボン酸及びその誘導体よりなる群より
選ばれた1種又は2種以上の化合物を含む表面処理剤に
より、予め表面処理をしたカーボンブラックをゴムに添
加混合する工程を含むことを特徴とするゴム組成物の製
法。
(1) Includes a step of adding and mixing carbon black that has been surface treated in advance with a surface treatment agent containing one or more compounds selected from the group consisting of aliphatic carboxylic acids and derivatives thereof. Characteristic manufacturing method of rubber composition.
(2)該脂肪族カルボン酸が炭素数5〜20の脂肪族カ
ルボン酸である特許請求の範囲第1項記載のゴム組成物
の製法。
(2) The method for producing a rubber composition according to claim 1, wherein the aliphatic carboxylic acid is an aliphatic carboxylic acid having 5 to 20 carbon atoms.
(3)該脂肪族カルボン酸が脂肪酸である特許請求の範
囲第2項記載のゴム組成物の製法。
(3) The method for producing a rubber composition according to claim 2, wherein the aliphatic carboxylic acid is a fatty acid.
(4)該誘導体が1価又は多価アルコールのエステルで
ある特許請求の範囲第1項記載のゴム組成物の製法。
(4) The method for producing a rubber composition according to claim 1, wherein the derivative is an ester of a monohydric or polyhydric alcohol.
(5)該誘導体が金属塩である特許請求の範囲第1項記
載のゴム組成物の製法。
(5) The method for producing a rubber composition according to claim 1, wherein the derivative is a metal salt.
(6)該カーボンブラックがカーボンブラックに該表面
処理剤の溶液を噴霧した後、造粒乾燥したカーボンブラ
ックである特許請求の範囲第1項記載のゴム組成物の製
法。
(6) The method for producing a rubber composition according to claim 1, wherein the carbon black is carbon black obtained by spraying a solution of the surface treatment agent onto carbon black and then granulating and drying the mixture.
(7)カーボンブラックへの該表面処理剤の添着量が1
〜10重量%である特許請求の範囲第1項記載のゴム組
成物の製法。
(7) The amount of the surface treatment agent attached to carbon black is 1
A method for producing a rubber composition according to claim 1, wherein the amount is 10% by weight.
(8)該カーボンブラックと共に表面処理剤を追加して
ゴムに添加する特許請求の範囲第1項記載のゴム組成物
の製法。
(8) A method for producing a rubber composition according to claim 1, wherein a surface treatment agent is additionally added to the rubber together with the carbon black.
JP21047586A 1986-09-05 1986-09-05 Production of rubber composition Pending JPS6366247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21047586A JPS6366247A (en) 1986-09-05 1986-09-05 Production of rubber composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21047586A JPS6366247A (en) 1986-09-05 1986-09-05 Production of rubber composition

Publications (1)

Publication Number Publication Date
JPS6366247A true JPS6366247A (en) 1988-03-24

Family

ID=16589956

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21047586A Pending JPS6366247A (en) 1986-09-05 1986-09-05 Production of rubber composition

Country Status (1)

Country Link
JP (1) JPS6366247A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997007951A1 (en) * 1995-08-30 1997-03-06 Loughborough University Innovations Ltd. Method for blending rubber or plastics materials
US6042763A (en) * 1996-09-20 2000-03-28 Kumaoka; Shun`Ichi Method of preparing porous ceramics provided with amorphous pore surfaces
KR100372746B1 (en) * 2000-08-08 2003-02-17 금호산업 주식회사 Tire rubber composition improved fatigue property
US7172652B2 (en) * 2003-10-28 2007-02-06 Degussa Ag Carbon black granules
JP2017508846A (en) * 2014-03-05 2017-03-30 株式会社ブリヂストン Tire compound rubber compound with high oxygen impermeability
JP2019089882A (en) * 2017-11-13 2019-06-13 Toyo Tire株式会社 Method of producing rubber composition for tire
JP2019089879A (en) * 2017-11-13 2019-06-13 Toyo Tire株式会社 Method of producing rubber composition for tire sidewall

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WO1997007951A1 (en) * 1995-08-30 1997-03-06 Loughborough University Innovations Ltd. Method for blending rubber or plastics materials
US6042763A (en) * 1996-09-20 2000-03-28 Kumaoka; Shun`Ichi Method of preparing porous ceramics provided with amorphous pore surfaces
KR100372746B1 (en) * 2000-08-08 2003-02-17 금호산업 주식회사 Tire rubber composition improved fatigue property
US7172652B2 (en) * 2003-10-28 2007-02-06 Degussa Ag Carbon black granules
JP2017508846A (en) * 2014-03-05 2017-03-30 株式会社ブリヂストン Tire compound rubber compound with high oxygen impermeability
JP2019089882A (en) * 2017-11-13 2019-06-13 Toyo Tire株式会社 Method of producing rubber composition for tire
JP2019089879A (en) * 2017-11-13 2019-06-13 Toyo Tire株式会社 Method of producing rubber composition for tire sidewall

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