JPH0432879B2 - - Google Patents
Info
- Publication number
- JPH0432879B2 JPH0432879B2 JP58154925A JP15492583A JPH0432879B2 JP H0432879 B2 JPH0432879 B2 JP H0432879B2 JP 58154925 A JP58154925 A JP 58154925A JP 15492583 A JP15492583 A JP 15492583A JP H0432879 B2 JPH0432879 B2 JP H0432879B2
- Authority
- JP
- Japan
- Prior art keywords
- grease composition
- oil
- white
- grease
- base oil
- 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.)
- Expired - Lifetime
Links
- 239000004519 grease Substances 0.000 claims description 41
- 239000000203 mixture Substances 0.000 claims description 38
- 239000002199 base oil Substances 0.000 claims description 20
- 239000003921 oil Substances 0.000 claims description 16
- 239000000344 soap Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 230000001050 lubricating effect Effects 0.000 claims description 7
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 6
- 229910052740 iodine Inorganic materials 0.000 claims description 6
- 239000011630 iodine Substances 0.000 claims description 6
- 239000002562 thickening agent Substances 0.000 claims description 6
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 3
- 239000003963 antioxidant agent Substances 0.000 description 9
- 239000000314 lubricant Substances 0.000 description 9
- 230000003078 antioxidant effect Effects 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 8
- 230000000704 physical effect Effects 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 238000002845 discoloration Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- 235000014692 zinc oxide Nutrition 0.000 description 3
- 229940114072 12-hydroxystearic acid Drugs 0.000 description 2
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 239000010690 paraffinic oil Substances 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- BVUXDWXKPROUDO-UHFFFAOYSA-N 2,6-di-tert-butyl-4-ethylphenol Chemical compound CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 BVUXDWXKPROUDO-UHFFFAOYSA-N 0.000 description 1
- HXIQYSLFEXIOAV-UHFFFAOYSA-N 2-tert-butyl-4-(5-tert-butyl-4-hydroxy-2-methylphenyl)sulfanyl-5-methylphenol Chemical compound CC1=CC(O)=C(C(C)(C)C)C=C1SC1=CC(C(C)(C)C)=C(O)C=C1C HXIQYSLFEXIOAV-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- GNVMUORYQLCPJZ-UHFFFAOYSA-M Thiocarbamate Chemical compound NC([S-])=O GNVMUORYQLCPJZ-UHFFFAOYSA-M 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000004517 catalytic hydrocracking Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- BOXSVZNGTQTENJ-UHFFFAOYSA-L zinc dibutyldithiocarbamate Chemical compound [Zn+2].CCCCN(C([S-])=S)CCCC.CCCCN(C([S-])=S)CCCC BOXSVZNGTQTENJ-UHFFFAOYSA-L 0.000 description 1
- JGSUMMPGKPITGK-UHFFFAOYSA-L zinc;n,n-dipentylcarbamodithioate Chemical compound [Zn+2].CCCCCN(C([S-])=S)CCCCC.CCCCCN(C([S-])=S)CCCCC JGSUMMPGKPITGK-UHFFFAOYSA-L 0.000 description 1
Description
本発明は白色グリース組成物に関し、詳しくは
白色半透明であり、しかも熱劣化による変色がき
わめて少ないグリース組成物に関する。
従来、グリースの潤滑油基油としてはナフテン
系または芳香族系基油あるいはパラフイン系基油
が用いられている。パラフイン系基油は潤滑特性
に優れているものの、比較的石ケンが溶解しにく
いため、石ケンが溶解し易くてグリースの製造が
容易なナフテン系または芳香族系基油が一般に用
いられている。
しかしながら、潤滑油基油として従来のこのよ
うなものを用いた場合、グリース製造時の加熱に
より変色し、特にナフテン系または芳香族系基油
の場合は変色が著しく、白色のグリースは得られ
なかつた。したがつて、従来はこのグリース製造
時の変色を隠蔽するために亜鉛華を添加して白色
とし、さらにその上で必要に応じて着色剤を添加
するという煩雑な操作を必要としていた。しか
も、このグリースは使用するとグリース自体の劣
化によつて短時間で黄褐色ないし黒褐色に変色し
てしまうため、白色グリースとしての実質的有効
性は認められなかつた。
本発明は上記従来の欠点を解消し、亜鉛華のよ
うな添加物を何ら必要とすることなく白色半透明
状を呈し、しかも使用時の熱劣化による変色がき
わめて少ないグリース組成物を提供することを目
的とするものである。
すなわち、本発明は、潤滑油基油に増稠剤を配
合してなるグリース組成物において、潤滑油基油
として芳香族炭化水素含量（％CA）３以下、ヨ
ウ素価１以下であり、かつ動粘度（40℃）が５〜
500cstである水素化処理油を用いたことを特徴と
する白色グリース組成物を提供するものである。
本発明において用いる潤滑油基油はASTM
D3238による％CA３以下、JIS K0070によるヨウ
素価１以下、動粘度（40℃）が５〜500cstであ
り、さらに通常パラフイン系炭化水素含量（％
CP）50以上、JIS K2284による粘度指数が100以
上の水酸化処理油である。
なお、芳香族炭化水素含量（％CA）、パラフイ
ン系炭化水素含量（％CP）等の測定は、上記し
たように、ASTM Ｄ 3238のいわゆるｎ−ｄ−
Ｍ法に基づくものである。
このように水素化処理油は常法により重質油等
を水素化分解等の水素化処理を行なつて得ること
ができ、水素化処理は過酷な条件が好ましい。
次に増稠剤とは稠度を向上させる役割を果たす
ものであり、主に金属石ケンが用いられる。金属
石ケンは特に制限がなく、通常グリースの製造に
用いられているものを使用することができる。具
体的には12−ヒドロキシステアリン酸、ステアリ
ン酸、酢酸等の脂肪酸と、アルミニウム、カルシ
ウムやナトリウム、カリウム、リチウム等の金
属、好ましくはアルカリおよびアルカリ土類金属
水酸化物との塩が挙げられる。また、尿素系、ベ
ントン系、シリコーン系などの増稠剤も金属石ケ
ンの代わりに単独で、あるいは金属石ケンと組合
せて使用することができる。
上記両者の配合量は通常、上記水素化処理油96
〜80重量％、好ましくは95〜85重量％であり、金
属石ケン４〜20重量％、好ましくは５〜15重量％
である。上記水素化処理油には流動パラフインや
ポリブテン等のポリオレフインを配合することも
可能である。
なお、本発明においては必要によりフエノール
系、カーバメイト系、チオカーバメイト系等の酸
化防止剤を配合することもできる。特にフエノー
ル系酸化防止剤を配合することが好ましい。具体
的には例えば２，６−ジタ−シヤリ−ブチルパラ
メチルフエノール；２，６−ジタ−シヤリ−ブチ
ルパラエチルフエノール；２，2′−メチレンビス
（６−タ−シヤリ−ブチル−４−メチルフエノー
ル）；４，4′−チオビス（６−タ−シヤリ−ブチ
ル−３−メチルフエノール）；ジブチルジチオカ
ルバミン酸亜鉛；ジアミルジチオカルバミン酸亜
鉛等を挙げることができる。この酸化防止剤は通
常0.1〜３重量％配合される。この酸化防止剤を
添加することにより、長時間白色半透明の状態を
保つことができる。
さらに、本発明においては必要に応じて着色剤
の他、バリウムスルフオネート等の防錆剤やトリ
クレジルフオスフエート等の油性剤などの各種添
加剤を加えることもできる。
本発明の白色グリース組成物は常法により製造
することができる。例えば潤滑油基油の使用量の
10〜50％に脂肪酸を加えて加熱撹拌溶解し、さら
に水酸化リチウム等を添加して一定温度（100℃
前後）に保持しながらケン化する。その後、少量
の基油を加えながら200℃前後まで加熱昇温して
脱水し、次いで加熱を中止し徐々に冷却して析出
した石ケン粉子を分散させ、さらにゲル化する。
このゲル化工程中において残りの潤滑油基油を添
加して急冷して100℃近辺まで温度を下げ、さら
に放冷し、得られたグリースを通常のミリング操
作を行なつて最終のグリース組成物を得ることが
できる。
本発明の白色グリース組成物は従来のように亜
鉛華のような添加物を何ら使用することなく白色
半透明状を呈したものである。しかも、使用時の
熱劣化による変色がきわめて少ないものである。
したがつて、任意の染料を加えてグレードや使
途に応じて色分け等することができ、品質管理が
容易となるなどの実用上の効果を有する。
それ故、本発明の白色グリース組成物は特に繊
維，紙，食品等を扱う機械類の潤滑に有効に用い
ることができる。
以下、本発明を実施例により詳細に説明する。
実施例 １
第１表に示す所定割合で潤滑油基油，金属石ケ
ンおよび酸化防止剤を配合してグリース組成物を
製造した。
まず、水素化処理油（％CA０，％CP72，ヨウ
素価０，粘度指数107，動粘度（40℃）90cst）の
使用全量の30％に12−ヒドロキシステアリン酸を
加えて加熱撹拌溶解し、さらに水酸化リチウムを
添加して100℃に保持しながらケン化した。その
後、200〜204℃まで加熱昇温して脱水し、次いで
加熱を中止し徐々に冷却し、180〜190℃において
残りの水素化処理油を添加してゲル化した。さら
に100℃まで温度を下げ、酸化防止剤を加えて混
合撹拌した。得られたグリースをミリング操作を
行なつてグリース組成物を製造した。
得られたグリース組成物の物性の評価結果を第
１表に示す。
実施例 ２
実施例１において、酸化防止剤を添加しなかつ
たこと以外は実施例１と同様にしてグリース組成
物を製造した。
得られたグリース組成物の物性の評価結果を第
１表に示す。
比較例 １
実施例１において、潤滑油基油として水素化処
理油の代わりにパラフイン系油（％CA７，％CP
69，ヨウ素価８，粘度指数96，動粘度（40℃）
100cst）およびナフテン系油（％CA27，％CP49，
粘度指数−35，動粘度（40℃）250cst）を用い、
当初の潤滑油基油の使用量を使用全量の1/2とし
たこと以外は実施例１と同様にしてグリース組成
物を得た。
得られたグリース組成物の物性の評価結果を第
１表に示す。
比較例 ２
実施例１において、潤滑油基油として水素化処
理油の代わりにナフテン系油（比較例１で用いた
ものと同じもの）を用いたこと以外は実施例１と
同様にしてグリース組成物を得た。
得られたグリース組成物の物性の評価結果を第
１表に示す。
実施例 ３
第１表に示す所定割合で潤滑油基油，金属石ケ
ンおよび酸化防止剤を配合してグリース組成物を
製造した。
まず、水素化処理油（実施例１と同じもの）の
使用全量の1/3にステアリン酸および水酸化カル
シウムを加えて加熱撹拌溶解し、さらに60℃にお
いて酢酸を加えてケン化した。その後、180〜190
℃まで加熱昇温して脱水し、次いで加熱を中止し
徐々に冷却し、160〜170℃において残りの水素化
処理油を添加してゲル化した。さらに100℃以下
まで温度を下げ、酸化防止剤を加えて混合撹拌し
た。得られたグリースをミリング操作を行なつて
グリース組成物を製造した。
得られたグリース組成物の物性の評価結果を第
１表に示す。
実施例 ４
実施例３において、酸化防止剤を添加しなかつ
たこと以外は実施例３と同様にしてグリース組成
物を得た。
得られたグリース組成物の物性の評価結果を第
１表に示す。
比較例 ３
実施例３において、潤滑油基油として水素化処
理油の代わりにナフテン系油（比較例１で用いた
ものと同じもの）を用いたこと以外は実施例３と
同様にしてグリース組成物を得た。
得られたグリース組成物の物性の評価結果を第
１表に示す。
比較例 ４
実施例１において、潤滑油基油として水素化処
理油の代わりにパラフイン系油（％CA7.0，％CP
69，ヨウ素価８，粘度指数107，動粘度（40℃）
100cst）を用いたこと以外は実施例１と同様にし
てグリース組成物を得た。
得られたグリース組成物の物性の評価結果を第
１表に示す。
The present invention relates to a white grease composition, and more particularly to a grease composition that is white and translucent and exhibits extremely little discoloration due to thermal deterioration. Conventionally, naphthenic or aromatic base oils or paraffinic base oils have been used as lubricating base oils for greases. Although paraffin base oils have excellent lubricating properties, they are relatively difficult to dissolve soaps in, so naphthenic or aromatic base oils are generally used because they dissolve soaps easily and are easy to manufacture grease. . However, when such conventional lubricant base oils are used, they change color due to heating during grease production, and in the case of naphthenic or aromatic base oils, the discoloration is particularly severe, making it impossible to obtain white grease. Ta. Therefore, conventionally, in order to hide the discoloration during the manufacture of this grease, it has been necessary to add zinc white to make it white, and then add a coloring agent as necessary, which is a complicated operation. Moreover, when this grease is used, it changes color to yellowish brown or blackish brown in a short period of time due to deterioration of the grease itself, so that its substantial effectiveness as a white grease has not been recognized. The present invention solves the above-mentioned conventional drawbacks, and provides a grease composition that exhibits a white translucent appearance without requiring any additives such as zinc white, and that exhibits extremely little discoloration due to thermal deterioration during use. The purpose is to That is, the present invention provides a grease composition in which a lubricant base oil is blended with a thickener, the lubricant base oil has an aromatic hydrocarbon content (%C A ) of 3 or less, an iodine value of 1 or less, and Kinematic viscosity (40℃) is 5~
The present invention provides a white grease composition characterized in that it uses a hydrogenated oil of 500 cst. The lubricant base oil used in the present invention is ASTM
%C A of 3 or less according to D3238, iodine value of 1 or less according to JIS K0070, kinematic viscosity (40℃) of 5 to 500cst, and usually paraffinic hydrocarbon content (%
C P ) Hydroxylated oil with a viscosity index of 50 or more and a viscosity index of 100 or more according to JIS K2284. Note that the aromatic hydrocarbon content (%C A ), paraffinic hydrocarbon content (%C P ), etc. are measured according to ASTM D 3238's so-called n-d-
It is based on the M method. As described above, the hydrotreated oil can be obtained by subjecting heavy oil etc. to hydrogenation treatment such as hydrocracking by a conventional method, and the hydrogenation treatment is preferably carried out under severe conditions. Next, thickeners play a role in improving consistency, and metal soaps are mainly used. There are no particular restrictions on the metal soap, and those commonly used in the manufacture of grease can be used. Specific examples include salts of fatty acids such as 12-hydroxystearic acid, stearic acid, and acetic acid with metals such as aluminum, calcium, sodium, potassium, and lithium, preferably alkali and alkaline earth metal hydroxides. In addition, thickeners such as urea-based, bentone-based, and silicone-based thickeners can be used alone or in combination with metal soap instead of metal soap. The blending amount of both of the above is usually 96% of the above hydrogenated oil.
~80% by weight, preferably 95-85% by weight, metal soap 4-20% by weight, preferably 5-15% by weight
It is. It is also possible to blend polyolefins such as liquid paraffin and polybutene into the above-mentioned hydrogenated oil. In the present invention, phenol-based, carbamate-based, thiocarbamate-based, and other antioxidants may be blended if necessary. In particular, it is preferable to incorporate a phenolic antioxidant. Specifically, for example, 2,6-di-tert-butyl-paramethylphenol; 2,6-di-tert-butyl-para-ethylphenol; 2,2'-methylenebis(6-tert-butyl-4-methylphenol) ); 4,4'-thiobis(6-tertiary-butyl-3-methylphenol); zinc dibutyldithiocarbamate; zinc diamyldithiocarbamate. This antioxidant is usually added in an amount of 0.1 to 3% by weight. By adding this antioxidant, it is possible to maintain a white and translucent state for a long time. Furthermore, in the present invention, in addition to a coloring agent, various additives such as a rust preventive agent such as barium sulfonate and an oily agent such as tricresyl phosphate may be added as necessary. The white grease composition of the present invention can be produced by conventional methods. For example, the amount of lubricant base oil used
Add fatty acids to 10 to 50% and dissolve with stirring, then add lithium hydroxide, etc., and heat at a constant temperature (100℃).
Saponify while holding in front and back). Thereafter, while adding a small amount of base oil, the mixture is heated to around 200°C to dehydrate it, then the heating is stopped and the mixture is gradually cooled to disperse the precipitated soap powder and further gel it.
During this gelation process, the remaining lubricant base oil is added and rapidly cooled to lower the temperature to around 100°C, then left to cool, and the resulting grease is subjected to normal milling operations to form the final grease composition. can be obtained. The white grease composition of the present invention exhibits a white translucent appearance without using any conventional additives such as zinc white. Furthermore, there is very little discoloration due to thermal deterioration during use. Therefore, it is possible to add an arbitrary dye to color code according to the grade or use, which has practical effects such as ease of quality control. Therefore, the white grease composition of the present invention can be particularly effectively used for lubricating machinery that handles textiles, paper, food, etc. Hereinafter, the present invention will be explained in detail with reference to Examples. Example 1 A grease composition was prepared by blending a lubricating base oil, a metal soap, and an antioxidant in the predetermined proportions shown in Table 1. First, 12-hydroxystearic acid was added to 30% of the total amount of hydrogenated oil (%C A 0, %C P 72, iodine value 0, viscosity index 107, kinematic viscosity (40℃) 90cst) and heated and stirred. The mixture was dissolved, and lithium hydroxide was added to saponify it while maintaining the temperature at 100°C. Thereafter, the mixture was heated to 200 to 204°C for dehydration, then heating was stopped and the mixture was gradually cooled, and the remaining hydrogenated oil was added at 180 to 190°C to form a gel. The temperature was further lowered to 100°C, an antioxidant was added, and the mixture was mixed and stirred. The obtained grease was subjected to a milling operation to produce a grease composition. Table 1 shows the evaluation results of the physical properties of the obtained grease composition. Example 2 A grease composition was produced in the same manner as in Example 1 except that no antioxidant was added. Table 1 shows the evaluation results of the physical properties of the obtained grease composition. Comparative Example 1 In Example 1, paraffinic oil (%C A 7, %C P
69, iodine value 8, viscosity index 96, kinematic viscosity (40℃)
100cst) and naphthenic oil (%C A 27, %C P 49,
Using viscosity index -35, kinematic viscosity (40℃) 250cst),
A grease composition was obtained in the same manner as in Example 1, except that the initial amount of lubricant base oil used was 1/2 of the total amount used. Table 1 shows the evaluation results of the physical properties of the obtained grease composition. Comparative Example 2 Grease composition was made in the same manner as in Example 1, except that naphthenic oil (the same as that used in Comparative Example 1) was used instead of the hydrogenated oil as the lubricant base oil. I got something. Table 1 shows the evaluation results of the physical properties of the obtained grease composition. Example 3 A grease composition was prepared by blending a lubricating base oil, a metal soap, and an antioxidant in the predetermined proportions shown in Table 1. First, stearic acid and calcium hydroxide were added to 1/3 of the total amount of hydrogenated oil (same as in Example 1) and dissolved with stirring, followed by saponification by adding acetic acid at 60°C. then 180-190
The mixture was dehydrated by heating to 160°C to 170°C, then the heating was stopped and the oil was gradually cooled, and the remaining hydrogenated oil was added at 160 to 170°C to form a gel. The temperature was further lowered to below 100°C, an antioxidant was added, and the mixture was mixed and stirred. The obtained grease was subjected to a milling operation to produce a grease composition. Table 1 shows the evaluation results of the physical properties of the obtained grease composition. Example 4 A grease composition was obtained in the same manner as in Example 3 except that no antioxidant was added. Table 1 shows the evaluation results of the physical properties of the obtained grease composition. Comparative Example 3 Grease composition was made in the same manner as in Example 3, except that a naphthenic oil (the same as that used in Comparative Example 1) was used instead of the hydrogenated oil as the lubricant base oil. I got something. Table 1 shows the evaluation results of the physical properties of the obtained grease composition. Comparative Example 4 In Example 1, paraffinic oil (%C A 7.0, %C P
69, iodine value 8, viscosity index 107, kinematic viscosity (40℃)
A grease composition was obtained in the same manner as in Example 1 except that 100cst) was used. Table 1 shows the evaluation results of the physical properties of the obtained grease composition.
【表】【table】
Claims (1)
組成物において、潤滑油基油として芳香族炭化水
素含量（％CA）３以下、ヨウ素価１以下であり、
かつ動粘度（40℃）が５〜500cstである水素化処
理油を用いたことを特徴とする白色グリース組成
物。 ２ 増稠剤として金属石ケンを用いたことを特徴
とする特許請求の範囲第１項記載の白色グリース
組成物。[Scope of Claims] 1. A grease composition comprising a lubricating base oil blended with a thickener, wherein the lubricating base oil has an aromatic hydrocarbon content (%C A ) of 3 or less and an iodine value of 1 or less,
A white grease composition characterized by using a hydrogenated oil having a kinematic viscosity (40° C.) of 5 to 500 cst. 2. The white grease composition according to claim 1, characterized in that a metal soap is used as a thickener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15492583A JPS6047100A (en) | 1983-08-26 | 1983-08-26 | White-colored grease composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15492583A JPS6047100A (en) | 1983-08-26 | 1983-08-26 | White-colored grease composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6047100A JPS6047100A (en) | 1985-03-14 |
| JPH0432879B2 true JPH0432879B2 (en) | 1992-06-01 |
Family
ID=15594943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15492583A Granted JPS6047100A (en) | 1983-08-26 | 1983-08-26 | White-colored grease composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6047100A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4865428B2 (en) * | 2006-07-06 | 2012-02-01 | Ｊｘ日鉱日石エネルギー株式会社 | Compressor oil composition |
| EP2423296A1 (en) | 2006-07-06 | 2012-02-29 | Nippon Oil Corporation | Lubricating oil composition for machine tools |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5116303A (en) * | 1974-07-31 | 1976-02-09 | Idemitsu Kosan Co | |
| JPS568865A (en) * | 1979-07-02 | 1981-01-29 | Nec Corp | Semiconductor device |
| JPS5876497A (en) * | 1981-11-02 | 1983-05-09 | Idemitsu Kosan Co Ltd | Refrigerator oil having excellent stability |
-
1983
- 1983-08-26 JP JP15492583A patent/JPS6047100A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5116303A (en) * | 1974-07-31 | 1976-02-09 | Idemitsu Kosan Co | |
| JPS568865A (en) * | 1979-07-02 | 1981-01-29 | Nec Corp | Semiconductor device |
| JPS5876497A (en) * | 1981-11-02 | 1983-05-09 | Idemitsu Kosan Co Ltd | Refrigerator oil having excellent stability |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6047100A (en) | 1985-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4435299A (en) | Preparation of high dropping point lithium complex soap grease | |
| US2468098A (en) | Grease composition | |
| US2468099A (en) | High-temperature grease | |
| AU2011276982A1 (en) | Lithium complex grease with improved thickener yield | |
| JPS6328478B2 (en) | ||
| US2450254A (en) | Lithium base grease and method of preparing the same | |
| US5236607A (en) | Preparation of lithium soap thickened greases | |
| US2349058A (en) | Lubricant and the method of preparing the same | |
| US2308599A (en) | Production of lubricants containing lead soap of hydrogenated ricinoleic acid | |
| US3117087A (en) | Method of making greases | |
| US2332247A (en) | Lubricant | |
| US2326596A (en) | Lubricant | |
| JPH0432879B2 (en) | ||
| US2356340A (en) | Metal soaps | |
| JPH0118120B2 (en) | ||
| US2652364A (en) | High-temperature grease compositions | |
| US2870090A (en) | Method of grease manufacture comprising shearing | |
| US4582619A (en) | Preparation of high dropping point lithium complex soap grease | |
| US3988248A (en) | Lithium soap lubricating grease | |
| US2755247A (en) | Wide temperature range alkali metal grease containing excess alkali metal hydroxides | |
| US2503749A (en) | Barium soap grease compositions and method of preparation | |
| DE2425161A1 (en) | LITHIUM SOAP GREASE | |
| US3388065A (en) | Process for lithium soap greases | |
| US2292672A (en) | Lubricant | |
| JPS60149696A (en) | Grease composition |