JPS61150742A - Lost wax - Google Patents

Lost wax

Info

Publication number
JPS61150742A
JPS61150742A JP27335984A JP27335984A JPS61150742A JP S61150742 A JPS61150742 A JP S61150742A JP 27335984 A JP27335984 A JP 27335984A JP 27335984 A JP27335984 A JP 27335984A JP S61150742 A JPS61150742 A JP S61150742A
Authority
JP
Japan
Prior art keywords
wax
resin
petroleum
rosin
petroleum resin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP27335984A
Other languages
Japanese (ja)
Other versions
JPH0342135B2 (en
Inventor
Naruhito Goto
後藤 完仁
Zenzo Sakai
酒井 善三
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.)
Nippon Kasei Chemical Co Ltd
Nihon Kasei Co Ltd
Original Assignee
Nippon Kasei Chemical Co Ltd
Nihon Kasei 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 Nippon Kasei Chemical Co Ltd, Nihon Kasei Co Ltd filed Critical Nippon Kasei Chemical Co Ltd
Priority to JP27335984A priority Critical patent/JPS61150742A/en
Publication of JPS61150742A publication Critical patent/JPS61150742A/en
Publication of JPH0342135B2 publication Critical patent/JPH0342135B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C7/00Patterns; Manufacture thereof so far as not provided for in other classes
    • B22C7/02Lost patterns

Abstract

PURPOSE:To improve the mold parting property in the stage of molding a pattern for precision casting and to improve workability and productivity by using lost wax compounded with a specific petroleum resin and rosin resin. CONSTITUTION:The wax to be compounded with the petroleum resin and rosin resin includes paraffin, wax, carnauba wax, etc. The petroleum resin is obtd. by the polymn. of the aliphat. unsatd. hydrocarbon of 5C and arom. unsatd. hydrocarbon of 9C obtd. from the high-temp. cracked oil, etc. of petroleum. Various rosin resins are usable for the rosin resin and are exemplified by the esterified matter of natural rosin and polyhydric alcohol such as triethylene glycol or glycerol. The petroleum resin and rosin resin are then compounded in combination with the wax and are uniformly mixed under the melting by heating, by which the lost wax is obtd.

Description

【発明の詳細な説明】 本発明はロストワックス法による精密鋳造用模型の作成
に用いられるロストワックスに関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to lost wax used for making precision casting models by the lost wax method.

(産業上の利用分野) 本発明のロストワックスは、模型成形時の離型性が良好
であるので、金型に離型剤をスグレー又は塗布する回数
を著しく減少でき、ひいては模型成形の作業性及び生産
性を著しく向上できるから、種々の精密鋳造品の製造に
おいて有利に使用することができる。
(Industrial Application Field) The lost wax of the present invention has good mold releasability during model molding, so the number of times that a mold release agent is applied to the mold can be significantly reduced, resulting in improved workability in model molding. And since productivity can be significantly improved, it can be advantageously used in the production of various precision casting products.

(従来技術〕 従来、ロストワックス法による精密鋳造における模型材
料としては、動植物系、鉱物系及び合成系の各種のワッ
クス類、天然ロジン、ロジンtlj導体及び石油樹脂等
の樹脂が使用されていた。しかし、ワックス類は成形模
型の収縮及び面引けが犬きく、かつ曲げ強度が低くても
ろいばかりでなく、成形時に金型からの離型性に劣る欠
点がちりたOまた、樹脂類は粘着性が大きくて離型性が
著しく悪い欠点がありた。
(Prior Art) Conventionally, as model materials for precision casting using the lost wax method, various animal/vegetal, mineral, and synthetic waxes, natural rosin, rosin tlj conductor, and resins such as petroleum resins have been used. However, waxes cause shrinkage and surface shrinkage of the molded model, and not only have low bending strength and are brittle, but also have the disadvantage of poor release properties from the mold during molding.Also, resins are sticky. It had the disadvantage that it was large and its mold releasability was extremely poor.

これらの欠点を改良するものとして、ワックス類に種々
の添加剤、たとえばテレフタル酸、イソフタル醗、安息
香数、ナフタリン、脂肪酸アミド等の有機化合物、Iリ
スチレン、プリエチレン、4リプチレン等の合成樹脂の
粉体又は球体を添加して成形模型の強度を高め、金型か
らの取出時の損傷を防ぐことも既に提案された。しかし
、かかる添加剤を配合し九ロストワックスは、連続成形
機で成形する場合には離型性が充分でない。また、かか
る添加剤を配合しないロストワックスは、前述のとおり
離鳳性が悪く、1回毎に金型に離型剤をスプレー又は塗
布しなければならない。
To improve these drawbacks, various additives are added to waxes, such as organic compounds such as terephthalic acid, isophthalic acid, benzoate, naphthalene, and fatty acid amides, and powders of synthetic resins such as I-listyrene, preethylene, and 4-liptylene. It has already been proposed to add bodies or spheres to increase the strength of the molded model and prevent damage during removal from the mold. However, nine lost waxes containing such additives do not have sufficient mold releasability when molded using a continuous molding machine. Furthermore, lost wax that does not contain such additives has poor releasability as described above, and a mold release agent must be sprayed or applied to the mold each time.

(発明が解決せんとする問題点) 本発明は従来の模型成形用のロストワックスにおける上
記の欠点、特に離型性に劣る欠点を改良して、模型成形
時の作業性及び生産性を向上できるロストワックスを提
供せんとするものである。
(Problems to be Solved by the Invention) The present invention improves the above-mentioned drawbacks of conventional lost wax for model molding, especially the drawback of poor mold releasability, and improves workability and productivity during model molding. The aim is to provide lost wax.

すなわち、本発明のロストワックスは、炭素数5の脂肪
族系不飽和炭化水素及び/又は炭素数9の芳香族系不飽
和炭化水素を主成分とする石油系不飽和炭化水素の重合
(共重合を含む)によって得られた石油樹脂とロジン系
樹脂とを併用して含有せしめてなるものである。
That is, the lost wax of the present invention is produced by polymerization (copolymerization) of petroleum-based unsaturated hydrocarbons whose main components are aliphatic unsaturated hydrocarbons having 5 carbon atoms and/or aromatic unsaturated hydrocarbons having 9 carbon atoms. It contains a combination of a petroleum resin obtained from a petroleum resin (including rosin resin) and a rosin resin.

本発明のロストワックスは、ワックス類に上記の特定の
石油樹脂とロジン系樹脂を併用して配合し、加熱溶融攪
拌することにより容易に製造することができる。その石
油樹脂とロジン系樹脂を配合するワックス類としては、
従来ロストワックスの製造において用いられていると同
様な動植物系、鉱物系及び合成系の各種ワックス類が用
いられる。
The lost wax of the present invention can be easily produced by blending wax with the above-mentioned specific petroleum resin and rosin resin, and heating, melting, and stirring the mixture. The waxes used to blend petroleum resin and rosin resin are:
Various kinds of animal and vegetable waxes, mineral waxes, and synthetic waxes that are conventionally used in the production of lost wax can be used.

そのワックス類の具体例としては、ノ母ラフインワック
ス(たとえば炭素数20〜40のもの)、マイクロクリ
スタリンワックス(たとえば炭素数25〜55のもの)
、セレシン、カルナノ々ロウ、ココナツツワックス、カ
スターワックス、糠ロウ、キャンデリラロウ、脂肪酸、
脂肪酸アミド類、及び各種の合成ロウ等があげられる。
Specific examples of waxes include rough-in wax (for example, those with carbon numbers of 20 to 40) and microcrystalline waxes (for example, those with carbon numbers of 25 to 55).
, ceresin, carnano wax, coconut wax, castor wax, bran wax, candelilla wax, fatty acids,
Examples include fatty acid amides and various synthetic waxes.

本発明においてワックス類に配合する石油樹脂は1石油
の高温分解油等から得られる炭素数5の脂肪族系不飽和
炭化水素を主成分とする石油系不飽和炭化水素の重合に
よって得られる石油樹脂、好ましくは平均分子量がi、
ooo〜2,000のもの1石油の高温分解油等から得
られる炭素数9の芳香族系不飽和炭化水素を主成分とす
る石油系不飽和炭化水素の重合によって得られる石油樹
脂、好ましくは平均分子量が500〜1.500のもの
、及び前記の炭素数5の脂肪族系不飽和炭化水素と前記
の炭素数9の芳香族系不飽和炭化水素とを主成分とする
石油系不飽和炭化水素(混合留分を含む)の重合によっ
て得られる石油樹脂、好ましくは平均分子量が500〜
1.500のものから選択される。これらの石油樹脂は
2種以上を併用してもよl/’。
In the present invention, the petroleum resin blended into the waxes is a petroleum resin obtained by polymerizing petroleum-based unsaturated hydrocarbons whose main component is aliphatic unsaturated hydrocarbons having 5 carbon atoms obtained from high-temperature cracked petroleum oil, etc. , preferably the average molecular weight is i,
ooo ~ 2,000 1 Petroleum resin obtained by polymerization of petroleum-based unsaturated hydrocarbons whose main component is aromatic unsaturated hydrocarbons having 9 carbon atoms obtained from high-temperature decomposition oil of petroleum, etc., preferably average Those with a molecular weight of 500 to 1.500, and petroleum-based unsaturated hydrocarbons whose main components are the above-mentioned aliphatic unsaturated hydrocarbons having 5 carbon atoms and the above-mentioned aromatic unsaturated hydrocarbons having 9 carbon atoms. Petroleum resin obtained by polymerization (including mixed fractions), preferably with an average molecular weight of 500 to
1.500. Two or more of these petroleum resins may be used in combination.

本発明においてワックス類に、前記の石油樹脂と併用し
て配合するロジン系樹脂としては種々のロジン系樹脂を
用いることができる。その好ましいロジン系樹脂とし【
は、天然ロジンとトリエチレングリコール、グリセリン
、ペンタエリスリトールなどの多価アルコールとのエス
テル化物、水素添加ロジンと前記の多価アルコールとの
エステル化物、及び重合ロジンと前記の多価アルコール
とのエステル化物があげられ、これら各エステル化物の
うちで、酸価が°10以上、軟化点(環球法)が90〜
120℃のものが特に好ましい。これらロジン系樹脂も
2種以上を併用することができる。
In the present invention, various rosin resins can be used as the rosin resin to be blended with the wax in combination with the above-mentioned petroleum resin. The preferred rosin resin is [
These are esterified products of natural rosin and polyhydric alcohols such as triethylene glycol, glycerin, and pentaerythritol, esterified products of hydrogenated rosin and the above-mentioned polyhydric alcohols, and esterified products of polymerized rosin and the above-mentioned polyhydric alcohols. Among these esterified products, those with an acid value of 10 or more and a softening point (ring and ball method) of 90 or more
Particularly preferred is one at 120°C. Two or more of these rosin resins can also be used in combination.

ワックス類に、前記の石油樹脂とロジン系樹脂とを併用
して配合し加熱溶融しながら均一に混合して得られる本
発明のロストワックスは、ワックス類にそれぞれの樹脂
を別々に配合したものに較べて、粘着性が著しく小さく
、成形時の離型性が著しく良好である。したがうて、本
発明のロストラックス永用いると、模型成形時の金型に
離型剤をスプレー又は塗布する回数を著しく減少できる
から、模型成形の作業性及び生産性が著しく向上できる
The lost wax of the present invention, which is obtained by blending waxes with the above-mentioned petroleum resin and rosin resin and uniformly mixing them while heating and melting, is obtained by blending each resin separately with waxes. In comparison, the tackiness is significantly lower and the mold releasability during molding is significantly better. Therefore, by using the Lostrax permanent mold of the present invention, the number of times of spraying or applying a mold release agent to a mold during model molding can be significantly reduced, and therefore the workability and productivity of model molding can be significantly improved.

なお、ワックス類にロジン系樹脂のみを配合した場合に
は、得られるワックスは前述のように粘着性が高くて離
型性が劣るばかりでなく、かつ融点が低くて耐熱性にも
劣る。しかるに、ワックス類に前記の石油樹脂とロジン
系樹脂とを併用して配合すれば、ワックス類との相溶性
が改良されるばかりでなく、粘着性が著しく低くなり、
その結果として離型性が良好となり、しかも耐熱性が改
良される。
In addition, when only a rosin resin is blended with waxes, the resulting wax not only has high tackiness and poor mold releasability as described above, but also has a low melting point and poor heat resistance. However, if the above-mentioned petroleum resin and rosin resin are combined and blended with waxes, not only the compatibility with the waxes is improved, but the tackiness is significantly lowered.
As a result, mold releasability is improved and heat resistance is improved.

本発明における石油樹脂とロジン系樹脂との配合割合は
、ロストワックスに対して石油樹脂が5〜40重量係、
好ましくは10〜30重量俤、口側用量が少なすぎると
離型性の改善効果が低下するばかりでなく、成形模型の
収縮及び面引けが大きくなる。また、石油樹脂及びロジ
ン系樹脂の使用割合が多くなりすぎると、ロストワック
スの溶融粘度が上昇し、流動性が小さくなるので、成形
模型の表面が粗くなったり、金型全体にワックスが流入
せず、成形模型が欠陥品となりやすい。
The blending ratio of petroleum resin and rosin resin in the present invention is 5 to 40 parts by weight of petroleum resin to lost wax,
Preferably, the amount is 10 to 30% by weight. If the amount on the mouth side is too small, not only the effect of improving mold releasability will be reduced, but also the shrinkage and surface shrinkage of the molded model will become large. In addition, if the proportion of petroleum resin and rosin resin used is too high, the melt viscosity of the lost wax will increase and the fluidity will decrease, resulting in the surface of the molding model becoming rough or the wax not flowing into the entire mold. First, the molded model is likely to be defective.

(発明の効果) 本発明のロストワックスは、特定の石油樹脂とロジン系
樹脂とを併用して含有せしめられたことにより、粘着性
が少なく、離型性に著しく優れているから、模型成形時
の金型に離型剤をスプレー又は塗布する回数を著しく減
少させることができ、連続成形機による成形が可能にな
り、模型成形の作業性及び生産性が著しく向上する。
(Effects of the Invention) The lost wax of the present invention contains a specific petroleum resin and a rosin resin in combination, so it has low stickiness and excellent mold releasability, so it can be used during model molding. The number of times a mold release agent is sprayed or applied to the mold can be significantly reduced, molding can be performed using a continuous molding machine, and the workability and productivity of model molding are significantly improved.

(実施例等) 次に実施例及び比較例をあげて本発明をさらに詳述する
。これらの例に記載の俤は、特に記載しない限り重量幅
を意味する。
(Examples, etc.) Next, the present invention will be described in further detail with reference to Examples and Comparative Examples. The weights mentioned in these examples mean weight ranges unless otherwise specified.

実施例I C5脂肪族不飽和炭化水素系石油樹脂(エッソ化学社商
品名 エスコレッ′ツ1304、平均分子量850)3
010ジン系樹脂(種層化成工業社商品名 ハリニスタ
ーC)201”ラフインワックス(日本石油社商品名 
)4ラフインワックス135度)30慢、及びカルナバ
ロウ20%をステンレス製容器に入れ、120〜130
1::O温度で15〜20分間加熱溶融し、アジタ一式
攪拌機でよく攪拌してロストワックスを製造した。
Example I C5 aliphatic unsaturated hydrocarbon petroleum resin (Esso Chemical Co., Ltd. trade name Escolets 1304, average molecular weight 850) 3
010 Gin-based resin (Taneya Kasei Kogyo Co., Ltd. trade name Harinister C) 201” Rough-in Wax (Nippon Oil Co., Ltd. trade name
) 4 rough-in wax 135 degrees) 30 degrees and carnauba wax 20% in a stainless steel container, 120-130 degrees
The mixture was heated and melted at a temperature of 1::O for 15 to 20 minutes, and thoroughly stirred with an agitator to produce lost wax.

得られたロストワックスについてJIS K−2530
゜K−2531、K−6833、K−6911、K−8
128の各方法に準じて各種の試験をした結果は第1表
に示すとおりであった。
Regarding the obtained lost wax, JIS K-2530
゜K-2531, K-6833, K-6911, K-8
Table 1 shows the results of various tests conducted according to the methods listed in No. 128.

また、このロストワックスを用いて、温度65℃、圧力
20時/−の条件で金型に離型剤を使用せずに成形でき
る回数を試験した結果は第1表に示すとおりであった。
Table 1 shows the results of a test using this lost wax to see how many times it could be molded without using a mold release agent under conditions of a temperature of 65 DEG C. and a pressure of 20 hours/-.

実施例2 C7芳香族不飽和炭化水素系石油樹脂(荒用化学工業社
商品名 アルコンP−100.平均分子量700 )3
0%、ロジン系樹脂(荒用化学工業社商品名 FGM 
−21) 20係、実施例1で用いたと同一の/臂うフ
インワックス301及びカルナバロウ20%を配合し、
実施例1におけると同様にしてロストワックスを製造し
た。
Example 2 C7 aromatic unsaturated hydrocarbon petroleum resin (Arayo Chemical Industry Co., Ltd. trade name Alcon P-100. Average molecular weight 700) 3
0%, rosin resin (Arayo Kagaku Kogyo Co., Ltd. product name FGM
-21) Section 20, blending the same fin wax 301 and carnauba wax as used in Example 1,
Lost wax was produced in the same manner as in Example 1.

実施例3 C5脂肪族不飽和炭化水素系石油樹脂(日本ゼオン社商
品名 クィントンD−100.平均分子量1.600)
159!i、C9芳香族不飽和炭化水素系石油樹脂(エ
ッソ化学社商品名 工スコレッッ5300、平均分子量
290)151 実施例2で用いたと同一のロジン系樹
脂20%、実施例1で用いたと同一の・々ラフインワラ
2130%及びカルナバロウ201を配合し、実施例1
におけると同様の方法でaスト7.クスを製造し九。
Example 3 C5 aliphatic unsaturated hydrocarbon petroleum resin (Nippon Zeon Co., Ltd. trade name Quinton D-100. Average molecular weight 1.600)
159! i, C9 aromatic unsaturated hydrocarbon petroleum resin (Esso Chemical Co., Ltd. trade name Kokoret 5300, average molecular weight 290) 151 20% of the same rosin resin used in Example 2, 20% of the same rosin resin used in Example 1, Example 1: Blending rough-in straw 2130% and carnauba wax 201
In the same way as in step 7. 9. Manufactures sou.

実施例4 C5脂肪族不飽和炭化水素及びC7芳香族不飽和炭化水
素共重合系石油樹脂(東邦石油樹脂社商品名 トーホー
ハイレジンー4490.平均分子量900)30俤、実
施例1で用い九と同一のロジン系樹脂20チ、・実施例
1で用いたと同一の・せラフインワックス30%、及び
カルナバロウ20%を配合し、実施例IKおけると同様
の方法で四ストワックスを製造した。
Example 4 C5 aliphatic unsaturated hydrocarbon and C7 aromatic unsaturated hydrocarbon copolymer petroleum resin (Toho Oil Resin Co., Ltd. trade name: Toho Hi Resin-4490. Average molecular weight 900) 30 yen, 9 and 9 used in Example 1 A four-stroke wax was prepared in the same manner as in Example IK by blending 20% of the same rosin resin, 30% of the same cellar wax used in Example 1, and 20% of carnauba wax.

実施例5 実施例1で用いたと同一の石油樹脂404、実施例2で
用いたと同一のロジン系樹脂10%、実施例1で用いた
と同一のノ4ラフインワックス30慢、及びカルナバロ
ウ20慢を配合し、実施例1におけると同様の方法でロ
ストワックスを製造した。
Example 5 The same petroleum resin 404 used in Example 1, 10% of the same rosin resin used in Example 2, the same No. 4 rough-in wax 30% as used in Example 1, and carnauba wax 20%. A lost wax was produced in the same manner as in Example 1.

実施例6 実施例1で用いたと同一の石油樹脂10慢、実施例2で
用いたと同一のロジン系樹脂40係、実施例1で用いた
と同一のノ4ラフインワックス30慢、及びカルナバロ
ウ20%を配合し、実施例1におけると同様の方法でロ
ストワックスを製造した。
Example 6 The same petroleum resin 10% as used in Example 1, the same rosin resin 40% as used in Example 2, the same No.4 rough-in wax 30% as used in Example 1, and 20% carnauba wax. A lost wax was produced in the same manner as in Example 1.

実施例7 実施例2で用いたと同一の石油樹脂15L4、実施例1
で用いたと同一のロジン系樹脂15チ、パラフィンワッ
クス501、及びカルナバロウ20慢を配合し、実施例
IKおけると同様の方法でロストワックスを製造した。
Example 7 Same petroleum resin 15L4 as used in Example 2, Example 1
A lost wax was produced in the same manner as in Example IK by blending the same rosin resin 15%, paraffin wax 501, and carnauba wax 20% as used in Example IK.

実施例8 実施例2で用いたと同一の石油樹脂35幅、実施例1で
用いたと同一のロジン系樹脂35%、/4ラフインワッ
クス20%、及びカルナバロウ10チを配合し、実施例
IKおけると同様の方法でロストワックスを製造した。
Example 8 The same petroleum resin 35 width as used in Example 2, 35% of the same rosin resin as used in Example 1, 20% of /4 rough-in wax, and 10% of carnauba wax were blended, and the same as in Example IK was prepared. Lost wax was produced in the same manner.

実施例2〜8で得られたロストワックスについて、実施
例IKおけると同様の試験をした結果は第1表に示すと
おシであった。
The lost waxes obtained in Examples 2 to 8 were tested in the same manner as in Example IK, and the results are shown in Table 1.

比較例1 実施例1で用いたと同一の石油樹脂50%、パラフィン
ワックス30ts、及びカルナバロウ20チを配合し、
実施例1におけると同様の方法でロストワックスを製造
した。
Comparative Example 1 50% of the same petroleum resin used in Example 1, 30ts of paraffin wax, and 20ts of carnauba wax were blended,
Lost wax was produced in the same manner as in Example 1.

比較例2 実施例1で用いたと同一のロジン系樹脂50%、実施例
1で用い、たと同一の/4’ラフインワックス30qb
、及びカルナバロウ20%を配合し、実施例1における
と同様の方法でロストワックスを製造した。
Comparative Example 2 50% of the same rosin resin used in Example 1, 30 qb of the same /4' rough-in wax as used in Example 1
, and 20% carnauba wax were blended to produce lost wax in the same manner as in Example 1.

比較例3 C9芳香族不飽和炭化水素系石油樹脂(荒用化学工業社
商品名アラタックN、平均分子量700)’sob、実
施例1で用いたと同一のツタラフインワックス30%、
及びカルナバロウ20チを配合し、実施例1におけると
同様の方法でロストワックスを製造した。
Comparative Example 3 C9 aromatic unsaturated hydrocarbon petroleum resin (Arayo Kagaku Kogyo Co., Ltd. trade name Aratac N, average molecular weight 700)'sob, 30% of the same ivy fin wax used in Example 1,
and 20 g of carnauba wax were blended to produce lost wax in the same manner as in Example 1.

比較例4 実施例3で用いたと同一の石油樹脂(クィントyD−1
00)25ts、及び(x スコL/ y ッ5300
)25s、実施例1で用いたと同一のパラフィンワック
ス301及びカルナバロウ20チを配合し、実施例1に
おけると同様の方法でロストワックスを製造した。
Comparative Example 4 The same petroleum resin (Quint yD-1) used in Example 3
00) 25ts, and (x Scott L/y 5300
) 25s, the same paraffin wax 301 used in Example 1, and 20% carnauba wax were blended to produce lost wax in the same manner as in Example 1.

比較例5 実施例4で用いたと同一の石油樹脂50%、実施例1で
用いたと同一のパラフィンワックス3゜チ、及びカルナ
バロウ20チを配合し、実施例1におけると同様の方法
でロストワックスを製造した。
Comparative Example 5 50% of the same petroleum resin used in Example 4, 3% of the same paraffin wax used in Example 1, and 20% of carnauba wax were mixed, and lost wax was produced in the same manner as in Example 1. Manufactured.

比較例1〜5で得られたロストワックスについて、実施
例IKおけると同様の試験をした結果は第1表に示すと
おシであった。
The lost waxes obtained in Comparative Examples 1 to 5 were tested in the same manner as in Example IK, and the results are shown in Table 1.

第1表の注; 車1・・・エッソ化学社商品名 *2・・・日本ゼオン社商品名 *3・・・荒用化学工業社商品名 *4・・・荒用化学工業社商品名 *5・・・エッソ化学社商品名Notes to Table 1; Car 1...Esso Chemical Co., Ltd. product name *2...Nippon Zeon Co., Ltd. product name *3...Arayo Chemical Industry Co., Ltd. product name *4...Arayo Chemical Industry Co., Ltd. product name *5...Esso Chemical Co., Ltd. product name

Claims (1)

【特許請求の範囲】 1)炭素数5の脂肪族系不飽和炭化水素及び/又は炭素
数9の芳香族系不飽和炭化水素を主成分とする石油系不
飽和炭化水素の重合(共重合を含む)によって得られた
石油樹脂とロジン系樹脂とを併用して含有せしめてなる
ロストワックス。 2)石油樹脂が、炭素数5の脂肪族系不飽和炭化水素を
主成分とする石油系不飽和炭化水素の重合によって得ら
れた平均分子量が1,000〜2,000の樹脂、炭素
数9の芳香族系不飽和炭化水素を主成分とする石油系不
飽和炭化水素の重合によって得られた平均分子量が50
0〜1,500の樹脂、及び炭素数5の脂肪族系不飽和
炭化水素と炭素数9の芳香族系不飽和炭化水素とを主成
分とする石油系不飽和炭化水素の重合によって得られた
平均分子量が500〜1,500の樹脂から選ばれる少
なくとも1種の石油樹脂である特許請求の範囲第1項記
載のロストワックス。 3)ロストワックスに対して、石油樹脂の含有量が10
〜40重量%であり、ロジン系樹脂の含有量が10〜4
0重量%であり、石油樹脂とロジン系樹脂の合計含有量
が70重量%以下である特許請求の範囲第1項又は第2
項記載のロストワックス。
[Scope of Claims] 1) Polymerization (copolymerization) of petroleum-based unsaturated hydrocarbons whose main components are aliphatic unsaturated hydrocarbons having 5 carbon atoms and/or aromatic unsaturated hydrocarbons having 9 carbon atoms. Lost wax made by containing a combination of petroleum resin obtained by (including) and rosin resin. 2) The petroleum resin is a resin with an average molecular weight of 1,000 to 2,000 obtained by polymerization of a petroleum-based unsaturated hydrocarbon whose main component is an aliphatic unsaturated hydrocarbon with a carbon number of 5, and a carbon number of 9. The average molecular weight obtained by polymerizing petroleum-based unsaturated hydrocarbons whose main component is aromatic unsaturated hydrocarbons is 50.
0 to 1,500 resin, and a petroleum-based unsaturated hydrocarbon whose main components are an aliphatic unsaturated hydrocarbon having 5 carbon atoms and an aromatic unsaturated hydrocarbon having 9 carbon atoms. The lost wax according to claim 1, which is at least one petroleum resin selected from resins having an average molecular weight of 500 to 1,500. 3) The content of petroleum resin is 10% compared to lost wax.
~40% by weight, and the content of rosin resin is 10~4
0% by weight, and the total content of petroleum resin and rosin resin is 70% by weight or less
Lost wax as described in section.
JP27335984A 1984-12-26 1984-12-26 Lost wax Granted JPS61150742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27335984A JPS61150742A (en) 1984-12-26 1984-12-26 Lost wax

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27335984A JPS61150742A (en) 1984-12-26 1984-12-26 Lost wax

Publications (2)

Publication Number Publication Date
JPS61150742A true JPS61150742A (en) 1986-07-09
JPH0342135B2 JPH0342135B2 (en) 1991-06-26

Family

ID=17526796

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27335984A Granted JPS61150742A (en) 1984-12-26 1984-12-26 Lost wax

Country Status (1)

Country Link
JP (1) JPS61150742A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004255465A (en) * 2003-02-25 2004-09-16 Howmet Research Corp Lost foam pattern for casting
KR100468481B1 (en) * 2001-11-12 2005-01-27 조순희 Composition for investment casting wax
EA022719B1 (en) * 2012-03-21 2016-02-29 Открытое Акционерное Общество "Завод Горного Воска" Precision casting pattern compound and method for production thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010075652A (en) * 2008-09-27 2010-04-08 Toshimitsu Nagamura Method of manufacturing composition for forming prototype in figure or jewel, or the like

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS518621A (en) * 1974-07-11 1976-01-23 Yoshiro Sato TAIATSUBEN
JPS53140363A (en) * 1977-04-21 1978-12-07 Toyo Ink Mfg Co Ltd Molding of wax-dispersion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS518621A (en) * 1974-07-11 1976-01-23 Yoshiro Sato TAIATSUBEN
JPS53140363A (en) * 1977-04-21 1978-12-07 Toyo Ink Mfg Co Ltd Molding of wax-dispersion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100468481B1 (en) * 2001-11-12 2005-01-27 조순희 Composition for investment casting wax
JP2004255465A (en) * 2003-02-25 2004-09-16 Howmet Research Corp Lost foam pattern for casting
EA022719B1 (en) * 2012-03-21 2016-02-29 Открытое Акционерное Общество "Завод Горного Воска" Precision casting pattern compound and method for production thereof

Also Published As

Publication number Publication date
JPH0342135B2 (en) 1991-06-26

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